Template-Type: ReDIF-Article 1.0 Author-Name: C.C. Pérez Author-Workplace-Name: Centro de Investigación, y Formación Agraria "Alameda del Obispo", Córdoba, Spain Author-Name: I. Rodríguez Author-Workplace-Name: Centro de Investigación, y Formación Agraria "Alameda del Obispo", Córdoba, Spain Author-Name: F. Espańa Author-Workplace-Name: Centro de Investigación, y Formación Agraria "Alameda del Obispo", Córdoba, Spain Author-Name: J. Dorado Author-Workplace-Name: Centro de Investigación, y Formación Agraria "Alameda del Obispo", Córdoba, Spain Author-Name: M. Hidalgo Author-Workplace-Name: Centro de Investigación, y Formación Agraria "Alameda del Obispo", Córdoba, Spain Author-Name: J. Sanz Author-Workplace-Name: Centro de Investigación, y Formación Agraria "Alameda del Obispo", Córdoba, Spain Title: Follicular growth patterns in repeat breeder cows Abstract: The aim of this study was to examine follicular development patterns in eighteen repeat breeder cows through natural oestrus cycles. Ovarian ultrasonographic examinations over 32 days after artificial insemination revealed that two follicular waves were the predominant patterns in animals with this syndrome (72.2%). Cycles with one or four waves rarely appeared. The ovulatory follicular diameter (day 0) was larger (P < 0.01) in cycles with a small number of waves; no differences were detected between ovulatory and anovulatory dominant follicles. Progesterone plasmatic concentrations were determined by RIA and differences were not significant when cycles with two or three waves were compared. The number of follicular waves was higher (2 or 3 waves) with longer interovulatory intervals (22.3 ? 1.89 vs 23.0 ? 2.0; n.s.) and older cows (7.0 ? 2.64 vs. 4.38 ? 1.66 years; P < 0.05). Mean ovulatory follicular diameter was 1.78 ? 0.36 cm. It can be concluded that cows with the RBC syndrome more frequently present two follicular waves, corresponding to longer cycles. Keywords: repeat breeder, follicular waves, cattle Journal: Veterinární medicína Pages: 200 Volume: 48 Issue: 1-2 Year: 2003 DOI: 10.17221/5743-VETMED File-URL: http://vetmed.agriculturejournals.cz/doi/10.17221/5743-VETMED.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/vet-200301-0001.txt Handle: RePEc:caa:jnlvet:v:48:y:2003:i:1-2:id:5743-VETMED Template-Type: ReDIF-Article 1.0 Author-Name: I. Langrová Author-Workplace-Name: Department of Zoology and Fishfarming, Faculty of Agronomy, Czech University of Agriculture, Prague, Czech Republic Author-Name: I. Jankovská Author-Workplace-Name: Department of Zoology and Fishfarming, Faculty of Agronomy, Czech University of Agriculture, Prague, Czech Republic Author-Name: M. Borovský Author-Workplace-Name: Department of Zoology and Fishfarming, Faculty of Agronomy, Czech University of Agriculture, Prague, Czech Republic Author-Name: T. Fiala Author-Workplace-Name: Department of Zoology and Fishfarming, Faculty of Agronomy, Czech University of Agriculture, Prague, Czech Republic Title: Effect of climatic influences on the migrations of infective larvae of Cyathostominae Abstract: Migration to herbage of Cyathostominae from experimentally deposited fresh or incubated faecal samples containing a known number of cyathostome L3 was studied in the Czech Republicfor up to 1 year. It was found out that most larvae remained quite close to the faecal samples. Of all larvae recovered from herbage 89.18% were collected within 10 cm of the faeces. Temporal variation in the presence of Cyathostominae larvae on vegeta­tion may account for poor recovery of Cyathostominae L3 in the field. A few infective larvae (0.05?2.74% of the larvae placed on the plot) were found as far as 30 cm from the faeces after 1 or 2 weeks. The number of larvae was significantly higher in June, with maximum recoveries of 4.97% (P < 0.05). Time of day was also significantly related to the number of L3 recovered, larval recovery was greater in the morning than at noontime, the highest number of L3 was observed at 8 am. Moisture and temperature were the most important weather factors associated with lateral larval migrations. There was a closer relation between the larval yields and monthly rainfall (r = 0.47) than between the larval recoveries and weekly rainfall (r = 0.23, r = 0.24). A significant amount of migration occurred during dew. An insignificant amount of migration occurred during dry weather. Keywords: Cyathostominae, horse, migration, infective larva Journal: Veterinární medicína Pages: 200 Volume: 48 Issue: 1-2 Year: 2003 DOI: 10.17221/5745-VETMED File-URL: http://vetmed.agriculturejournals.cz/doi/10.17221/5745-VETMED.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/vet-200301-0002.txt Handle: RePEc:caa:jnlvet:v:48:y:2003:i:1-2:id:5745-VETMED Template-Type: ReDIF-Article 1.0 Author-Name: Y. Cevger Author-Workplace-Name: Department of Livestock Economics, Faculty of Veterinary Sciences, Ankara University, Diskapi Ankara, Turkey Title: Quantitative methods to determine factors affecting profits of lamb fattening enterprises Abstract: The purpose of this study was to demonstrate the use of profit function regression model as a possible practical decision support tool in the lamb meat production. It was found that all independents variables except ?Fattening Duration?, ?Capacity Use?, ?Total Other Expenditures? and ?Number of Lambs?, had strong statistical associations (P < 0.01) with the profit from per kg live-weight. Because marginal impact of each independent vari­able on the profit was the estimated co-efficient value, they could simply be used to evaluate ?what-if scenarios? and the risk of investment under changing circumstances in lamb meat production. It is, therefore, intended that lamb meat producers could use such modelling approach as a practical decision support tool. Keywords: meat production, profitability, regression function, decision support tool, what-if scenarios Journal: Veterinární medicína Pages: 200 Volume: 48 Issue: 1-2 Year: 2003 DOI: 10.17221/5746-VETMED File-URL: http://vetmed.agriculturejournals.cz/doi/10.17221/5746-VETMED.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/vet-200301-0003.txt Handle: RePEc:caa:jnlvet:v:48:y:2003:i:1-2:id:5746-VETMED Template-Type: ReDIF-Article 1.0 Author-Name: O. Kucuk Author-Workplace-Name: Department of Animal Nutrition, School of Veterinary Medicine, University of Firat, Elazig, Turkey Author-Name: N. Sahin Author-Workplace-Name: Veterinary Control and Research Institute of Ministry of Agriculture, Elazig, Turkey Author-Name: K. Sahin Author-Workplace-Name: Department of Animal Nutrition, School of Veterinary Medicine, University of Firat, Elazig, Turkey Author-Name: M. F. Gursu Author-Workplace-Name: Department of Biochemistry, School of Medicine, University of Firat, Elazig, Turkey Author-Name: F. Gulcu Author-Workplace-Name: Department of Biochemistry, School of Medicine, University of Firat, Elazig, Turkey Author-Name: M. Ozcelik Author-Workplace-Name: Veterinary Control and Research Institute of Ministry of Agriculture, Elazig, Turkey Author-Name: M. Issi Author-Workplace-Name: Department of Internal Disease, School of Veterinary Medicine, University of Firat, Elazig, Turkey Title: Egg production, egg quality, and lipid peroxidation status in laying hens maintained at a low ambient temperature (6°C) and fed a vitamin C and vitamin E-supplemented diet Abstract: This experiment was conducted to evaluate the effects of vitamin C (L-ascorbic acid) and vitamin E (?-tocopherol acetate) on egg production, egg quality, lipid peroxidation status (measured as MDA), and some serum metabolites in laying hens (Hy-Line) maintained at a low ambient temperature (6°C). One hundred and twenty laying hens (18-wk-old) were divided into four groups, 30 hens per group. The laying hens were fed either a basal diet or the basal diet supplemented with either 250 mg of L-ascorbic acid/kg of diet, 250 mg of ?-tocopherol acetate/kg of diet or 250 mg of L-ascorbic acid plus 250 mg of ?-tocopherol acetate/kg of diet. Although feed consumption of the hens was similar (P > 0.05) among treatments, supplemental vitamin C and E significantly increased final body weight, egg production, and improved feed efficiency (P < 0.05). Egg weights were also greater (P < 0.05) in hens supplemented with the combination of vitamin C and E than that of hens supplemented either vitamin or no vitamin (control). Haugh unit did not change upon each vitamin supplementation, but the combination of the vitamin supplement yielded a higher Haugh unit (P < 0.05). Each dietary supplement of vitamin C and vitamin E improved the egg quality (P < 0.05) resulting in a greater specific gravity, thicker egg shell, and heavier egg shell weight. Separately or as a combination, supplemental vitamin C and E decreased MDA, glucose, cholesterol, and triglyceride concentrations (P < 0.05). Results of the present study showed that supplementing vitamin C and vitamin E, particularly as a combination, improved the performance of cold-stressed laying hens, offering a potential protective management practice in preventing cold stress-related losses in performance of laying hens. Results of the present study also indicated that the effects of vitamin C and vitamin E are additive. Keywords: cold stress, vitamin C, vitamin E, laying hen, egg production, lipid peroxidation Journal: Veterinární medicína Pages: 200 Volume: 48 Issue: 1-2 Year: 2003 DOI: 10.17221/5747-VETMED File-URL: http://vetmed.agriculturejournals.cz/doi/10.17221/5747-VETMED.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/vet-200301-0004.txt Handle: RePEc:caa:jnlvet:v:48:y:2003:i:1-2:id:5747-VETMED Template-Type: ReDIF-Article 1.0 Author-Name: K. Altunatmaz Author-Workplace-Name: Surgery Department, Faculty of Veterinary Medicine, Istanbul University, Avcilar, Istanbul, Turkey Author-Name: R. Yucel Author-Workplace-Name: Surgery Department, Faculty of Veterinary Medicine, Istanbul University, Avcilar, Istanbul, Turkey Author-Name: Y. Devecioglu Author-Workplace-Name: Surgery Department, Faculty of Veterinary Medicine, Istanbul University, Avcilar, Istanbul, Turkey Author-Name: M. Saroglu Author-Workplace-Name: Surgery Department, Faculty of Veterinary Medicine, Istanbul University, Avcilar, Istanbul, Turkey Author-Name: S. Ozsoy Author-Workplace-Name: Surgery Department, Faculty of Veterinary Medicine, Istanbul University, Avcilar, Istanbul, Turkey Title: Treatment of canine hip dysplasia using triple pelvic osteotomy Abstract: In this study, triple pelvic osteotomy (TPO) was carried out in a total of 22 dysplastic dogs, of which 9 were treated bilaterally and 13 unilaterally, and the position of the acetabulum was changed in a total of 31 hip joints using a special plate. It was established that, of the treated hip joints, 16 had severe, 12 medium and 3 mild dysplasia, the Norberg angle was between 70?92° and that the covering rate of the acetabulum over the femoral head changed between 5?42°. In the radiographs taken immediately after the operation, the covering rate of the acetabulum over the femoral head was determined to be very good in 25 hip joints (75% and over) and good in 6 joints (60?75%). In 5 cases, some of the screws holding the plate in place were seen to loosen in radiographs. However, this did not have any effect on the angle given to the acetabulum. In radiographs obtained 6?48 months later, degenerative joint disease was not encountered in 29 cases, with the exception of 2 cases. It was concluded that hip dysplasia, which is a hereditary disease, can be treated reasonably successfully in young dogs with TPO carried out before degenerative changes begin to occur in the joint. Keywords: hip dysplasia, triple pelvic osteotomy, dog Journal: Veterinární medicína Pages: 200 Volume: 48 Issue: 1-2 Year: 2003 DOI: 10.17221/5748-VETMED File-URL: http://vetmed.agriculturejournals.cz/doi/10.17221/5748-VETMED.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/vet-200301-0005.txt Handle: RePEc:caa:jnlvet:v:48:y:2003:i:1-2:id:5748-VETMED Template-Type: ReDIF-Article 1.0 Author-Name: M. Ocepek Author-Workplace-Name: Croatian Veterinary Institute, Zagreb, Croatia Author-Name: M. Pate Author-Workplace-Name: Croatian Veterinary Institute, Zagreb, Croatia Author-Name: M. Zolnir-Dovc Author-Workplace-Name: Croatian Veterinary Institute, Zagreb, Croatia Author-Name: Z. Cvetnic Author-Workplace-Name: Croatian Veterinary Institute, Zagreb, Croatia Title: Tuberculosis in cattle caused by IS901+ Mycobacterium avium subsp. avium ? a case report Abstract: In a small cattle herd an eight-year-old cow showed a reaction to bovine tuberculin in two consecutive skin tests. The animal showing clinical signs related to tuberculosis was slaughtered for diagnostic purpose. The lungs were completely covered with disseminate tubercles of different sizes and the mediastinal lymph nodes were enlarged. Pneumonia granulomatosa tuberculosa and lymphadenitis hyperplastica chronica were diagnosed histologically. Mycobacterium avium subsp. avium of IS901+ and IS1245+ genotype was isolated from lungs and from the lymph node. Six weeks after the affected animal has been eliminated from the herd, the skin test in other animals on the farm was performed: single test with avian tuberculin in extensively reared poultry (n = 12), comparative test with bovine and avian tuberculin in cattle (n = 7). Concluding from the results of negative skin testing of other animals on the farm, it is very likely that the cow did not transmit M. a. avium into the environment. Keywords: mycobacteria, lung?s tuberculosis, Slovenia Journal: Veterinární medicína Pages: 200 Volume: 48 Issue: 1-2 Year: 2003 DOI: 10.17221/5749-VETMED File-URL: http://vetmed.agriculturejournals.cz/doi/10.17221/5749-VETMED.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/vet-200301-0006.txt Handle: RePEc:caa:jnlvet:v:48:y:2003:i:1-2:id:5749-VETMED Template-Type: ReDIF-Article 1.0 Author-Name: I. Langrová Author-Workplace-Name: Department of Zoology and Fishery, Faculty of Agronomy, University of Agriculture, Prague, Czech Republic Author-Name: I. Jankovská Author-Workplace-Name: Department of Zoology and Fishery, Faculty of Agronomy, University of Agriculture, Prague, Czech Republic Author-Name: M. Borovský Author-Workplace-Name: Department of Zoology and Fishery, Faculty of Agronomy, University of Agriculture, Prague, Czech Republic Title: Comparative studies of early season moxidectin treatment and conventional ivermectin/ benzimidazole treatments in the control of cyathostomes in horses Abstract: Moxidectin administered in January or February at a single dose was tested for efficacy in horses on two farms for 12 and 11 months, respectively. Horses were infected with cyathostomes naturally in the previous grazing period. Forty horses of farm 1 and 20 horses of farm 2 were used in controlled tests to evaluate the efficacy of moxidectin 2% gel formulation at the dosage 0.4 mg moxidectin per kg of live weight, ivermectin commercial paste formulation at the dosage 0.2 mg ivermectin per kg of live weight, mebendazole and fenbendazole commercial paste formulation at the dosage both 7.5 mg mebendazole and fenbendazole per kg of live weight, all applied orally. Three control groups of 10 horses each (farm 1) were treated twice a year with ivermectin and benzimidazoles, respectively. Individual faecal egg counts, faecal cultures and larval differentiation were performed. Moxidectin had more prolonged and greater suppressive effects on the post-treatment reappearance and magnitude of strongyle egg counts than did ivermectin or benzimidazoles. In the moxidectin treated group (M1) strongyle eggs were seen for the first time in April and a slight increase in the mean count of eggs per gram of faeces (EPG) was observed during the rest of the season. Litter larval counts significantly reflected levels of exposure during the tested season. Twenty animals of farm 2 were allocated into two groups of ten horses each based on pre-treatment eggs per gram (EPG) counts (moxidectin treated group and control group). In the moxidectin treated group mean egg counts remained very low throughout the study. A plateau was reached by autumn, with egg counts ranging from 74 to 145 EPG. The faecal egg counts of moxidectin treated group (M2) were significantly higher in March, April, May and June. Keywords: horses, control of cyathostomes, anthelmintic treatments, moxidectin, epidemiology Journal: Veterinární medicína Pages: 200 Volume: 48 Issue: 1-2 Year: 2003 DOI: 10.17221/5744-VETMED File-URL: http://vetmed.agriculturejournals.cz/doi/10.17221/5744-VETMED.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/vet-200301-0007.txt Handle: RePEc:caa:jnlvet:v:48:y:2003:i:1-2:id:5744-VETMED