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Effects of root pruning on the vegetative growth and fruit quality of Zhanhuadongzao treesS. Yang, S. Xing, C. Liu, Z. Du, H. Wang, Y. XuHort. Sci. (Prague), 2010, 37(1):14-21 | DOI: 10.17221/29/2009-HORTSCI The effects of root pruning on the vegetative growth and fruit quality of six-year-old Zhanhuadongzao (Ziziphus jujube Mill.) trees were evaluated. Three root pruning treatments (severe, moderate and light degree) were conducted at the distance of 3, 5 and 7 times trunk diameter from trunk on both inter-row sides of the trees, respectively. The results showed that the severe root pruning decreased the length of primary branch by 27.9% and the number of primary branches by 12.1% in contrast to the control of no root pruning. Compared to the control, both severe and moderate root pruning had no apparent effects on nitrogen, phosphorus and potassium contents of leaves after 35 days, but had significant effects after 161 days. Severe root pruning had larger effectiveness of controlling vegetative growth than the moderate one. By root pruning, the contents of vitamin C and total sugar were increased but the content of cypermethrin was decreased in fruits and no effects were found on total acid content of fruit and yield at harvest. In the rhizosphere soil, root pruning decreased the microbial populations and enzymes activities but increased the concentrations of cypermethrin, available nitrogen, phosphorus and potassium. It is proposed that the removal of root at 3 times trunk diameter distance from trunk was feasible to regulate the vegetative growth and fruit quality of Zhanhuadongzao tree. |
Development of foliage biomass of young spruce and beech stands in the mountain water balance research areaP. Kantor, F. ©ach, V. ČernohousJ. For. Sci., 2009, 55(2):51-62 | DOI: 10.17221/72/2008-JFS The investigation of foliage biomass development including LAI and the growth of spruce and beech stands in the juvenile stage (age 1 to 21 years) represents a special complementary study to long-term research of water balance components on the experimental forest hydrology area Deątné Mountainside. The experiment is located in the Orlické hory Mts. at the altitude of 900 m on a clear-felled area. In 1982 the spruce plantation was established at 1.5 ´ 1.5 m spacing (4,600 plants/ha) and the beech plantation at 1.0 ´ 1.0 m (10,000 plants/ha). According to tending programs applicable to forest stands in the Czech Republic, two improvement fellings were carried out (1995 and 2001) in spruce and none in beech. In 2002, some 1,550 spruce trees/ha (mean height 10.1 m) and 7,440 beech trees/ha (mean height 4.8 m) were recorded. At the end of the first vegetation season in 1982, the dry matter (DM) of foliage in spruce and beech amounted to 35 and 70 kg/ha, respectively. Five years later (1987), these values increased to 770 and 360 kg/ha in spruce and beech, respectively. At a stand age of 21 years, foliage DM was determined to be 11,940 kg/ha for spruce and 3,050 kg/ha for beech. At the same time, the leaf-area index (LAI) was calculated to be 5.55 and 5.94 in spruce and beech, respectively. The method of foliage biomass quantification, based on the determination of foliage DM of mean sample trees and stand density, enabled to acquire complementary data usable in long-term research of the water regime of spruce and beech and simultaneously to provide information on the potential of biomass production and LAI value of both main commercial species in mountain forests of the Czech Republic. |
Effects of drainage treatment and stand growth on changes in runoff components from a forested watershedV. Černohous, F. ©ach, D. KacálekJ. For. Sci., 2010, 56(7):307-313 | DOI: 10.17221/103/2009-JFS Runoff generation under various natural conditions has often been studied in forested watersheds for a long time. In 1967, Hewlett designed a variable source area model. The model is based on the expansion and shrinkage of variable source areas and consequent changes in a drainage network during a discharge event. The runoff investigation was carried out in a forested watershed situated in the summit area of the Orlické hory Mts. The watershed has a drainage area of 32.6 ha with the land-surface elevation ranging from 880 to 940 m a.s.l. Runoff components, their amounts and ratios were calculated using a simple graphical-mathematical method of the hydrograph recession limb analysis according to a reservoir model representing the particular components (base flow, subsurface flow and overland flow, in other words slow, accelerated and rapid flows). Comparing the amount of slow and rapid runoff constituents (89.5-99.4% and 0.6-10.5%, respectively), the greater amount of slowly moving water confirmed that overland flow was absent under conditions of forest environment. Not even the drainage treatment altered this positive ratio of the runoff constituents. During the third period, under stabilized hydrology and stand conditions, the accelerated and rapid runoff increased again, however maximally by 10% and 4%, respectively, not reaching the initial size of the calibration period. |
70th birthday of Professor Pavel Kadlec, Dr.Sc.Z. BubníkCzech J. Food Sci., 2010, 28(4):343-344 | DOI: 10.17221/122/2010-CJFS |
Influence of nitrogen fertilizer injection (CULTAN) on yield, yield components formation and quality of winter wheat grainO. Kozlovský, J. Balík, J. Černý, M. Kulhánek, M. Kos, M. PráąilováPlant Soil Environ., 2009, 55(12):536-543 | DOI: 10.17221/165/2009-PSE The CULTAN (Controlled Uptake Long Term Ammonium Nutrition) system is based on one-time injection of the whole dose of nitrogen required for the vegetation period. The effect of this method on yield and grain quality of winter wheat was observed in a 2-year small-plot trial at 4 different experimental sites in the Czech Republic. The experiment comprised two treatments with the total amount of nitrogen applied during fertilization of 150 kg N/ha. At the CULTAN treatment the whole dose was applied all at once using the GFI 3A injection machine (Maschinen und Antriebstechnik GmbH Güstrow), whereas at the control treatment, the dose was divided into three applications. The average grain yield of winter wheat in 2007 was 9.56 t/ha (control) and 8.78 t/ha (CULTAN); in 2008 it was 9.91 t/ha (control) and 9.63 t/ha (CULTAN). The differences in 2008 were not statistically significant. The contents of nitrogen and gluten were significantly lower at CULTAN treatment in both years. The values of falling number, Zeleny test and bulk density were generally similar at both treatments. |
Impact of long term fertilization on soil water content in HaploborollsC.Y. Song, X.Y. Zhang, X.B. Liu, Y.Y. Sui, Z.L. LiPlant Soil Environ., 2010, 56(9):408-411 | DOI: 10.17221/173/2009-PSE Soil water content under no fertilizer (NF), fertilizer (F) (N:30; P2O5: 45 kg/ha), and fertilizer plus pig manure (FO) (N:30; P2O5: 45 kg/ha; pig manure 15 000 kg/ha in 2003; and 30 000 kg/ha in 2004 and 2005) treatments was measured using neutron probe instrument for a period three years in a long term field experiment in order to investigate the impact of different fertilization treatments on Haploborolls soil water content. Fertilization had significant effects on the soil water content. FO treatment had greater soil water content in 10 cm depth than F treatment with average 9.9% increase (P < 0.05) but lower than NF treatment; however, in the depth from 30 to 90 cm, there was no water content difference between F and FO treatments. Treatment with organic amendments reduced total soil water content on the long term experiment basis. Across the three years, no fertilizer treatment had total soil water content higher by 1.2% and 3.1% than fertilizer treatment and fertilizer plus pig manure treatment within 10 to 210 cm soil profile in most of the months, respectively. |
Detection methods for Mycobacterium avium subsp paratuberculosis in milk and milk products: a reviewI. Slana, F. Paolicchi, B. Janstova, P. Navratilova, I. PavlikVet Med - Czech, 2008, 53(6):283-306 | DOI: 10.17221/1859-VETMED Mycobacterium avium subsp. paratuberculosis (MAP) is the etiologic agent of paratuberculosis, a disease with considerable economic impact, principally on dairy cattle herds. Animals with paratuberculosis shed viable MAP especially in their milk, faeces and semen. MAP may have a role in the development of Crohn's disease in humans via the consumption of contaminated milk and milk products. The current methods of milk pasteurization are not sufficient to kill all MAP cells present in milk and MAP has been cultured from raw or pasteurized milk and isolated from cheese. The purpose of the present study was to review the different methods used for detection of MAP in milk and milk products. We analyze the current methods for direct or non direct identification of MAP and culture and molecular biology methods that can be applied to milk and milk products. |
Czech Journal of Animal Science - Content, Author Index, List of Reviewers Volume 54editorsCzech J. Anim. Sci., 2009, 54(12):I-VIII | DOI: 10.17221/1747-CJAS |
Laying pattern parameters in broiler breeder hens and intrasequence changes in egg compositionM. Gumulka, E. Kapkowska, D. MajCzech J. Anim. Sci., 2010, 55(10):428-435 | DOI: 10.17221/1698-CJAS The aim of the study was to analyze the pattern of oviposition time in laying sequences in broiler breeder hens and to determine a relationship between egg position in the sequence and egg quality. The sequences were described using mean oviposition time (hour) within a sequence, mean lag of oviposition time between successive ovipositions, and mean and cumulative lag of oviposition for a sequence. Egg weight, percentage of egg components and shape index were determined for successive eggs in a sequence. The 2-, 3-, 4-, 5- to 6- and 7- to 9-egg sequences were considered. The light/dark regime was 16 h/8 h (05:00 a.m. to 09:00 p.m.). Hens laid the first egg in a sequence about 3.5 h after the beginning of the photoperiod. With increasing sequence length, the first egg was laid sooner after the beginning of the photoperiod and the intervals between successive ovipositions shortened. This suggests that when planning the frequency of egg collection in a flock of broiler breeder hens, one should account for changes in the egg sequence length during the production period. No significant relationship between egg position in the sequence and quality of egg components was observed. |
Upper eyelid and medial canthus reconstructive surgery after histiocytoma resection in a dog: a case reportM. Lew, S. Lew, A. RozickaVet Med - Czech, 2010, 55(3):137-143 | DOI: 10.17221/69/2010-VETMED A six year old crossbred male dog presented with non-pigmented, pale pink, unhaired, ulcerative tumor of the medial canthus and upper eyelid region. As treatment, surgery was proposed. During the surgery complete excision of the tumor was performed. The extent of skin loss, especially in the upper eyelid required plastic reconstruction by pedicle flap transposition. The soft skin of the cheek was chosen as a graft donor site. The postoperative period proceeded without any complications and ended with successful engraftment. The soft cheek skin did not impede movement of the upper eyelid. Histopathological examination indicated histiocytoma and tumor-free excisional margins were confirmed. There has been no recurrence during the subsequent 12 month period. |
Repair of cleft palate in a calf using polypropylene mesh and palatal mucosal flap: a case reportO. Smolec, D. Vnuk, J. Kos, N. Brkljaca Bottegaro, B. PirkicVet Med - Czech, 2010, 55(11):566-570 | DOI: 10.17221/3015-VETMED The soft palate plays a critical role in the oral and pharyngeal phases of swallowing. Congenitally cleft soft palates (palatoschisis) in calves are rare and pose a serious challenge for surgical correction due to high complication rates. The main obstacles to repairing palate defects are obtaining complicated access to the soft palate, and reducing the tension on the repair so that the sutures hold. A 21 day old female Simmental calf was submitted to our clinic with a history of frequent episodes of coughing and milk dripping from its nostrils after suckling. After clinical examination, a congenital cleft palate was diagnosed. Surgery was performed under general anaesthesia. First, lateral buccotomy was performed to improve the intraoral approach. The palatal defect was repaired using polypropylene mesh and palatal mucosal flap. An oesophageal tube was placed and anchored to the skin using a Chinese finger trap suture technique. Antibiotic treatment was continued through seven days and a transoesophageal feeding tube was fitted at the end of the surgery allowing the calf to be fed with milk during the postoperative period. Postoperatively, the caudal aspect of the repair broke down resulting in persistent mild bilateral nasal discharge. A combination of the two described techniques can be a good option for resolving palatal defects. However, adequate exposure and repair are still difficult to achieve and these approaches often result in serious postoperative complications. |
The influence of Picea abies on herb vegetation in forest plant communities of the Veporské vrchy Mts.F. Málią, J. Vladovič, V. Čaboun, A. VodálováJ. For. Sci., 2010, 56(2):58-67 | DOI: 10.17221/39/2009-JFS Natural mixed beech-fir forests were quite widely replaced by spruce dominated stands in Slovakia. Given the demands on the assessment of the forest status as well as on stopping the biodiversity loss it is required to evaluate the influence of Picea abies (L.) Karst. on the species composition. In a case study from the Veporské vrchy Mts. natural beech dominated forests were compared to stands with different spruce proportion. Within three groups of relevés with no, less and more than a half proportion of Picea abies the species diversity and Ellenberg indicator values were compared. The response of particular species to the proportion of Picea abies was evaluated by partial relation in direct gradient analysis. The increasing spruce proportion causes particularly higher occurrence of acidophytes and a decrease in nitrophytes. Species with the highest positive response to spruce are mostly shallow-rooted or characteristic of natural spruce forests. Greater richness along with the highest diversity was found in mixed stands with less than a half proportion of Picea abies. The most significant difference in species composition was between natural and spruce dominated stands. However the proportion of Picea abies does not reduce the species diversity in general, it causes significant changes in the species composition. As the results show, to avoid the negative effect and loss of phytodiversity it is required not to grow spruce dominated stands out of the natural occurrence of Picea abies. |
Diversification into non-agricultural activities under the conditions of SlovakiaStanislav BUCHTA, Zuzana FEDERIČOVÁAgric. Econ. - Czech, 2010, 56(6):284-291 | DOI: 10.17221/77/2009-AGRICECON The paper analyzes the diversification into non-agricultural activities in the Slovak agriculture. It describes the diversification activities according to the Farm Structure Survey. In 2007, every third farm performed other gainful activities. The paper analyzes the public expenditures paid to the diversification in the pre-integration and post-integration period and reveals the covering of the beneficiaries in the past and new programming period. The conclusion presents the attitudes and opinions of the Diversification Measure beneficiaries connected with the evaluation of the implementing means and other aspects joined with the implementation of diversification activities within the sectoral programme documents. |
Effect of the mycoflora of ergot (Claviceps purpurea)sclerotia on their viabilityMichal ONDŘEJ, Bohumír CAGA©, Eliąka ONDRÁČKOVÁPlant Protect. Sci., 2010, 46(2):66-71 | DOI: 10.17221/48/2009-PPS Twenty fungal species were isolated from sclerotia of ergot (Claviceps purpurea) originating from rye. In in vitro tests with the anamorphic stage of ergot (known as Sphacelia segetum) high mycoparasitic activity was exhibited only by two of them - Clonostachys rosea and Trichoderma harzianum, moderate mycoparasitic activity was detected in Ulocladium sp., Clonostachys catenulata, Trichoderma hamatum, and Trichothecium roseum. In in vitro tests of mycoparasitic activity with sclerotia of the fungus Sclerotinia sclerotiorum their rapid and total destruction was brought about only by the fungi Clonostachys rosea and Trichoderma harzianum. The viability of overwintering ergot sclerotia in the soil was influenced by their placement, age, depth of placement and treatment with a conidial suspension of the fungus Clonostachys rosea. The highest viability values were reported in fresh one-year-old sclerotia. In two-year-old sclerotia their viability was reduced and their sensitivity to microbial activity was higher. The sclerotia aged 3 years or more did not germinate and were all microbiologically degraded in the soil. More than 80% of degradation of sclerotia which were 1 to 2 years old was caused by the fungus Clonostachys rosea. The degradation of sclerotia aged 3 to 4 years was brought about by bacteria, soil edafauna (mites, nematodes) and fungi of the genera Trichoderma, Fusarium, Clonostachys, etc. |
Major and minor compounds in a Mexican spirit, young Mezcal coming from two Agave species.Araceli M. Vera-Guzmán, Rosa I. Guzmán-Gerónimo, Mercedes G. LópezCzech J. Food Sci., 2010, 28(2):127-132 | DOI: 10.17221/56/2009-CJFS Major and minor compounds in a traditional Mexican spirit, young mezcal from Agave angustifolia Haw. and Agave potatorum Zucc., were characterised using gas chromatography and solid phase microextraction-gas chromatography-mass spectrometry. A large variability in both mezcal samples was detected in the content of methanol, higher alcohols, acetic acid, and ethyl acetate. However, their values were below the maximum concentration permitted by the Mexican Standards. The minor compounds identified by mass spectrometry included alcohols, esters, ketones, acids, and furanes. The similarities found between mezcal from Agave angustifolia and Agave potatorum may be due to their processing methods. In addition, mezcals contain unique compounds that can be used as markers to identify the products of different origins. |
Effects of lead on seedling growth of spesia populneaM. Kabir, M.Z. Iqbal, M. Shafiq, Z.R. FarooqiPlant Soil Environ., 2010, 56(4):194-199 | DOI: 10.17221/147/2009-PSE The effects of lead on root, shoot and seedling length, leaf area, number of leaves, plant circumference, seedling dry weight, root/shoot and leaf area ratios of Thespesia populnea L. were determined in greenhouse under natural environmental conditions with and without phytotoxic metal ions at 5, 10, 15, 20, and 25 µmol/l. Lead treatments have a strong influence on the growth and development of T. populnea by reducing significantly (P < 0.05) all the above parameters. Lead treatment at 5-25 µmol/l produced significant (P < 0.05) effects on seedling and root length, plant circumference and seedling dry weight of T. populnea, while lead treatment at 10-25 µmol/l produced significant (P < 0.05) effects on shoot length, number of leaves and leaf area as compared to control. Tolerance in T. populnea seedling at 25 µmol/l of lead treatment was lowest as compared to all other treatments. |
Course and branch of the celiac artery in the red falcon (Buteo rufinus)A. Haligur, A. DuzlerVet Med - Czech, 2010, 55(2):79-86 | DOI: 10.17221/144/2009-VETMED The present study was aimed at determining the origin, course and distribution of the celiac artery in eight adult red falcons, using a latex injection and dissection method. The celiac artery was ascertained to originate from the aorta at the level of the last 2-3 costae. The celiac artery was determined to split into two main branches, namely, left branch of the celiac artery and right branch of the celiac artery, in between the proventriculus and gizzard, and in the proximity of the lien. Prior to the indicated bifurcation, the celiac artery was observed to give off an esophageal artery and superior proventricular artery. In seven of the red falcons examined, splenic arteries, varying from two to four in number, were determined to spring from the celiac artery. Both the left and right hepatic arteries were ascertained to stem from the left branch of the celiac artery. The terminal branch of the left branch of the celiac artery, namely, the left gastric artery, was determined to have a fan-like distribution to the left surface of the gaster. The artery of the gall bladder was demonstrated to emanate from the left branch of the celiac artery in all of the red falcons examined, excluding one. The right branch of the celiac artery was determined to ramify into its terminal branches, namely, the right inferior gastric artery, ileocecal artery, pancreaticoduodenal artery, duodenojejunal artery and gastroduodenal artery, in the proximity of the pylorus which constitutes the gastro-duodenal passage. |
Uroperitoneum secondary to rupture of the urachus associated with Clostridium spp. infection in a foal: a case reportF.J. Mendoza, M. Lopez, E. Diez, A. Perez-Ecija, J.C. EstepaVet Med - Czech, 2010, 55(8):399-404 | DOI: 10.17221/2955-VETMED An 8-hour-old Andalusian colt was referred to the Veterinary Teaching Hospital of the University of Cordoba due to weakness, lateral recumbence, diarrhoea and absent sucking reflex. At admission the foal was obnubilated, with cold limbs, pale mucous membranes, tachycardia and diarrhoea. Laboratory results revealed increased hematocrit and total protein concentration, hyperfibrinogenemia, leukopenia, azoetemia, hypertrygliceridemia and a decreased IgG level. A diagnose of failure of passive transfer of immunoglobulins and hyperlipaemia was made. On the third day of hospitalization the foal presented painful and swollen joints, abdominal distension and fever. The ultrasonographic study at this point showed abundant hypoechogenic free fluid content in the peritoneal cavity. Abdominocentesis demonstrated a high peritoneal creatinine:serum creatinine ratio. Culture of the peritoneal fluid was Clostridium spp. positive. Necropsy revealed a tear in the internal umbilical remnant. The final diagnosis was uroperitoneum secondary to rupture of the urachus associated with a Clostridium spp. infection. New emerging aetiologies responsible for uroperitoneum, either by septic urachitis or omphalophlebitis, are emerging. Nonetheless, cases of uroperitoneum induced by Clostridium spp. infection are rare and constitute a new and important finding for equine neonatal medicine. In addition, the hyperlipaemic status in this animal could be a plausible cause leading to septicemia and subsequent uroperitoneum. |
Tracked mechanism simulation of mobile machine in MSC.ADAMS/ViewJ. MatejRes. Agr. Eng., 2010, 56(1):1-7 | DOI: 10.17221/9/2009-RAE Tracked travel mechanism is, in some cases, a significant alternative of wheeled travel mechanism. A suitability of application depends on particular work conditions, which opens the space for computer simulation. This paper is focused on possibilities of tracked vehicle simulation in MSC.ADAMS; mainly in the universal module MSC.ADAMS/View, which is not especially customized for tracked vehicle simulations. The study presents a concrete example of tracked vehicle simulation and a method of its successful realization during travel through terrain obstacle as a basic manoeuvre for evaluating of chassis properties and work ergonomy. |
A large urolith in an eight year-old mare: a case reportR. Kozdrowski, R. Henklewski, M. Dzieciol, M. BednarskiVet Med - Czech, 2010, 55(6):285-288 | DOI: 10.17221/2990-VETMED A micturition problem appeared in an eight year-old mare at the third month of pregnancy. Symptoms intensified during the course of pregnancy and, at the end of the tenth month, the foetus was aborted. Labour was ordinary with normal presentation, position and posture, yet there was a formation about the size of an ostrich egg. The structure was spontaneously pushed out of the genital tract during expulsion of the foetus. Examination of the structure showed that it was a urolith which measured 13 × 10 × 7 cm (circumference measured along the long axis amounted to 31.5 cm, and along the transverse axis to 26 cm) and weighed 803 g. |
Seed treatment with GA3 or stratification enhances emergence of some strawberry tree genotypes: Short communicationL. Demirsoy, H. Demirsoy, G. Celikel, I. Macit, B. ErsoyHort. Sci. (Prague), 2010, 37(1):34-37 | DOI: 10.17221/28/2009-HORTSCI The strawberry tree is a valuable ornamental plant because of its attractive red fruits in the fall and winter, and pinkish-white flowers in fall. Additionally, its fruits are processed into various products such as jam, marmalade, wine and alcohol. Since, propagation of the strawberry tree is difficult. This study aimed to examine the influence of stratification and GA3on breaking seed dormancy and enhancing emergence rate of Arbutus unedo. The influence of seed treatment with GA GA3 or stratification at 4°C was examined on emergence of five genotypes of strawberry tree (Arbutus unedo L.) near the Black Sea in Turkey. Results indicate that emergence rate increased with increasing GA GA3 concentration from 300 to 1,200 ppm and stratification duration from 5 to 15 weeks. In all examined genotypes, the highest emergence rate was obtained using 1,200 ppm GA GA3 or 15 weeks of stratification. Regardless of the positive effects of the above treatments, seed emergence rates in all genotypes examined in this study were low. Application of GA GA3 or stratification of seeds increased emergence percentage in all Arbutus unedo genotypes examined in the current study. |
Status of an indigenous agro-forestry system in changing climate: A case study of the middle Himalayan region of Tehri Garhwal, IndiaC. P. KalaJ. For. Sci., 2010, 56(8):373-380 | DOI: 10.17221/113/2009-JFS The agro-forestry system is one of the best known indigenous practices for livelihood. In view of instant decline in the rainfed hill agro-forestry system the present study was undertaken in the hilly villages of Uttarakhand state of India with the major objective to assess the status and effects of various factors on this centuries old indigenous agro-forestry system. The survey documented a total of 26 herbaceous food crop species and 21 woody species that were raised by farmers in the selected villages of Uttarakhand. A total of 37 plant species available in the agro-forestry system and used for curing various ailments by traditional healers were also documented during the survey. The major cereals produced by farmers were Oryza sativa L., Echinochloa frumentoacea Link., Eleusine coracana (L.) Gaertner and Triticum aestivum L. The indigenous system of cropping was locally called as Baranaja that revolved around the production of > 12 varieties of crops. Besides food, the species grown in the agro-forestry system were used for multiple purposes. Water scarcity, migration of youth in search of employment and changing socio-economic and climatic conditions were some of the major reasons for declining agro-forestry system and abandoning the agricultural land. |
Microbial contamination after sanitation of food contact surfaces in dairy and meat processing plantsJarmila Schlegelová, Vladimir Babák, Martina Holasová, Lucie Konstantinová, Lenka Necidová, Frantisek ©iąák, Hana Vlková, Petr Roubal, Zoran JaglicCzech J. Food Sci., 2010, 28(5):450-461 | DOI: 10.17221/65/2009-CJFS The occurrence of Listeria monocytogenes, Salmonella spp., Bacillus cereus, Staphylococcus spp., Enterococcus spp., and Escherichia coli in raw food materials, food products, and on food contact surfaces after sanitation was investigated during the period of 2005-2006 in three dairy cattle farms (120 samples), one dairy (124 samples), and two meat processing plants (160 samples). A total of 1409 isolates were identified. The epidemiological characterisation and determination of the virulence factors and antimicrobial resistance were performed on selected isolates. The level of bacterial contamination generally decreased during the production process (the contamination of food products was lower than that of raw material). However, the contamination of food contact surfaces was relatively high even after sanitation. Moreover, specific microbiological profiles were found on the inside equipment surfaces in dairy facilities, where genetically closely related multi-resistant strains persisting in biofilm communities may occur as demonstrated for staphylococci. Although the occurrence of potentially significant pathogens was not high, the microorganisms such as L. monocytogenes, Salmonella spp., and shiga-toxin positive E. coli principally contaminated the meat processing plants. B. cereus isolates, among which 76% were positive for diarrhogenic enterotoxin, typically occurred on the inside equipment surfaces and in the heat-treated products. |
Study of wheat (Triticum aestivum L.) quality for feeding ruminants using in vitro and in vivo methodsJ. Pozdíąek, K. VaculováCzech J. Anim. Sci., 2008, 53(6):253-264 | DOI: 10.17221/359-CJAS : Nutrient digestibility and parameters of nutritive value for ruminants of two winter wheat (Triticum aestivum L.) cultivars were evaluated by means of an in vivo balance trial performed by the regression method on two groups of heifers with an increasing proportion of grain in DM (from 6 to 46%). Sulamit and Rapsodia, chosen on the basis of the in vitro test from a set of 25 cultivars (grown in 2002-2004) reached significant differences in DM fermentability in vitro (by 43.7-78.6 ml/g DM, P < 0.05). In vivo digestibility of crude protein, nitrogen-free extract, organic matter, parameters of N retention, energy concentrations (metabolisable energy, net energy for lactation and for fattening) and parameters in the PDI system (especially PDIE) increased along with the grain proportion in the diet. At the comparable proportion of grain in the ration the positive differences were significantly higher (P < 0.05) for Sulamit than Rapsodia. |
Interaction of selected production indicators of the economics of pork productionM. ©prysl, J. Čítek, R. StupkaCzech J. Anim. Sci., 2010, 55(1):1-10 | DOI: 10.17221/1705-CJAS Estimates of the effects influencing the economics of pig production are of primary importance for breeders. For this purpose, costs, revenues and profitability were determined on the basis of individual parameters of the efficiency of tested pigs and of average commodity prices. The calculation was the result of the efficiency of actual animals and of the average and simulated prices of inputs received by producers in large-scale production operations. 136 animals, 64 of crossbred combinations (LWs × D) × (LWD × L) and 72 of PN × (LWD × L) were used. The total cost of 1 pig represented the costs per weaned piglet, feed and other costs; the revenues represented the actual price of a pig at slaughter. Multivariable hierarchical models were constructed to assess the relationships between the following factors: crossbred combination, nutrition and sex, ADG, number of piglets bred, CFM price and carcass price with the outcome variables: costs, revenues and profitability. The results demonstrated that the total cost of fattening pig is considerably influenced by the price of a piglet and feed, not by the price of the carcass and the growth intensity. There was no proof of a relationship between the price of a pig and reproduction and/or the price of feed. Profitability is significantly influenced by the reproduction rate, price of feed, growth intensity and revenues. The results also showed that the intensity of nutrition and the sex considerably influence the total cost of 1 fattened pig, which represents an increase in the total cost by 3.80 € in the application of ad libitum feeding techniques, and 5.39 €/pc in the fattening of barrows. The choice of a suitable combination represents a decrease in the total cost by 1.49% and an increase in revenues by 2.93%. Profitability is significantly associated with the intensity of nutrition, sex and breed. With unrestricted feeding it is reduced by 4.1%, for barrows by 6.6%, and in the use of four-breed combinations of crossbreds it increases by 4.13%. |
Effect of the age and season of fattening period on carbon dioxide emissions from broiler housingM. Kníľatová, ©. Mihina, J. Brouček, I. Karanduąovská, G.J. Sauter, J. MačuhováCzech J. Anim. Sci., 2010, 55(10):436-444 | DOI: 10.17221/1701-CJAS The quantification of emissions of greenhouse gases from human activities is of prime importance for determining the importance of their effect on the environment. The aim of this study was to test a hypothesis that the interior concentration and emission of carbon dioxide in chicken housing is impacted by the age of animals and season of fattening period. Carbon dioxide (CO2) concentrations and emissions were assessed over six fattening periods in total. The major part of CO2 seemed to have its origin in bird respiration with assumed production of approx. 147 kg of CO2/h. CO2 emission was most affected by chickens towards the end of the grow-out period (P < 0.001) taking dominance over the process of natural gas burning by heaters. The mean CO2 emission from the chicken house ranged between 120 and 247 kg/h in the first quarter of periods and between 325 and 459 kg/h in the last ones. The heaters could be theoretically a possible source of approx. 39 kg each hour if they worked continuously. CO2 emissions were considerably more affected by ventilation rate (P < 0.001) than by CO2 concentration in the indoor air. |
Microbiological quality of marketed fresh and frozen seafood caught off the Adriatic coast of CroatiaN. Topic Popovic, A. Benussi Skukan, P. Dzidara, R. Coz-Rakovac, I. Strunjak-Perovic, L. Kozacinski, M. Jadan, D. Brlek-GorskiVet Med - Czech, 2010, 55(5):233-241 | DOI: 10.17221/2997-VETMED Fresh and frozen seafood products (fish, shellfish, crustaceans, molluscs) in wide use in Croatia and typical of the Mediterranean diet, were examined for the presence of microbiological contamination through the winter and summer seasons. Total bacterial counts of aerobic mesophilic bacteria (AB), aerobic psychrophilic bacteria (AP), Salmonella spp., Enterobacteriaceae, Escherichia coli, Staphylococcus aureus, sulphite-reducing clostridia (SRC), Listeria monocytogenes, Vibrio cholerae and V. parahaemolyticus were measured. The microbiological quality of individual samples varied widely between animal species and also between winter/summer seasons regarding total counts of aerobic mesophilic and psychrophilic bacteria. The poorest quality was for (both summer and winter) fish samples, where 66.6 % of fresh and frozen fish were found unacceptable by Croatian standards. The overall prevalence of V. parahaemolyticus was 5%. Its recovery rate was higher in fresh/frozen shellfish in both seasons than in other specimens or other storage/season conditions. Fresh crustaceans sampled in winter demonstrated significantly higher aerobic mesophilic counts than frozen ones. Unacceptable Enterobacteriaceae levels were obtained in 40% of the fresh fish summer samples. The results of this survey constitute an indicator of bacteriological contamination of a variety of seafood. The findings could serve as a basis for future testing of seafood, and possibly as a template for developing a regional/Mediterranean testing scheme on the microbial contamination of seafood in order to establish data with comparative epidemiological and statistical values. |
Mycobacteria in water, feedstocks and food: analysis of publicationsM. Kaevska, K. HruskaVet Med - Czech, 2010, 55(12):571-580 | DOI: 10.17221/2946-VETMED Papers on mycobacteria in food, feed and water, published between 1945 and 2010 and indexed in the database Web of Science® (Thomson Reuters) were ranked according to authors, institutions, countries and source titles. The total number of papers on mycobacteria and food and mycobacteria and water were 1486 and 1419, respectively. More than 40% of papers have been published in the last five years. In addition to publications in peer reviewed journals the archives of ProMED-mail and the Rapid Alert System for Food and Feed of the European Union were also searched. It is evident that much attention is being paid to mycobacteria in food, feed and water as they likely pose a public health risk. |
Which factors explain lepidopteran larvae variance in seasonal guilds on some oaks?M. Turčáni, J. Patočka, M. KulfanJ. For. Sci., 2010, 56(2):68-76 | DOI: 10.17221/54/2009-JFS Differences between the oak lepidopteran communities were studied in Slovakia in 1993 and 1994. Sampling was undertaken between April and October on 3 oak species. Biological traits of larvae were examined in order to explain differences in seasonal guilds among oaks. Cluster analysis shows similarities between communities in the flush feeder guild where the results were influenced mainly by temporal variability; in the late spring guild mainly by site; factors influencing summer feeder and autumn feeder similarities remain unclear. Detrended Correspondence Analysis (DCA) was used to investigate the main gradients explaining variability in communities. Results indicated that the host specificity along axis 1 (A1) and larval ballooning along axis 2 (A2) were important in the flush feeder guild; larval feeding strategy along A1 and the degree of defoliation by Lymantria dispar along A2 were important in late spring feeders; the year of study along A1 and host specificity along A2 were important in the summer feeder guild; and adaptation to lower quality of food along A1 and host specificity along A2 for the autumn feeder guild. The results are discussed. |
Regional policy of the European Communities and cross-border cooperation within the South Bohemia RegionJakub HUSÁKAgric. Econ. - Czech, 2010, 56(6):292-300 | DOI: 10.17221/15/2010-AGRICECON The paper is focused on the problems of the cross-border cooperation and the regional policy of the European Communities and the implementation of theoretical issues in the South Bohemia Region. The main aim of this paper is to compare the cross-border cooperation and its influence on the regional development of the South Bohemia Region between the 2004-2006 programming period (after the accession of the Czech Republic to the European Communities) and the 2007-2013 programming period. The paper also provides the typology of the realised cross-border projects from the perspectives of the number of projects and also their financial allocation. The results document the increasing importance of the cross-border cooperation and its highly positive impact on the social and economic development of the South Bohemia Region. |
