Template-Type: ReDIF-Article 1.0 Author-Name: Science Czech Journal of Animal Title: Author Index, Volume 53 Journal: Czech Journal of Animal Science Pages: 17-30 Volume: 53 Issue: 12 Year: 2008 DOI: 10.17221/368-CJAS File-URL: http://cjas.agriculturejournals.cz/doi/10.17221/368-CJAS.html File-Format: text/html Handle: RePEc:caa:jnlcjs:v:53:y:2008:i:12:id:368-CJAS Template-Type: ReDIF-Article 1.0 Author-Name: P. Homolka Author-Workplace-Name: Department of Nutrition and Feeding of Farm Animals, Institute of Animal Science, Prague-Uhříněves, Czech Republic Author-Name: V. Koukolová Author-Workplace-Name: Department of Nutrition and Feeding of Farm Animals, Institute of Animal Science, Prague-Uhříněves, Czech Republic Author-Name: Z. Němec Author-Workplace-Name: Department of Microbiology, Nutrition and Dietetics, Czech University of Life Sciences in Prague, Prague, Czech Republic Author-Name: Z. Mudřík Author-Workplace-Name: Department of Microbiology, Nutrition and Dietetics, Czech University of Life Sciences in Prague, Prague, Czech Republic Author-Name: B. Hučko Author-Workplace-Name: Department of Microbiology, Nutrition and Dietetics, Czech University of Life Sciences in Prague, Prague, Czech Republic Author-Name: J. Sales Author-Workplace-Name: Department of Nutrition and Feeding of Farm Animals, Institute of Animal Science, Prague-Uhříněves, Czech Republic Title: Amino acid contents and intestinal digestibility of lucerne in ruminants as influenced by growth stage Abstract: Lucerne (Medicago sativa L. var. Palava), harvested at four successive dates over a 30-day period, was evaluated for chemical composition (dry matter, organic matter, crude protein, ether extract, crude fibre, nitrogen-free extract, neutral detergent fibre, acid detergent fibre, acid detergent lignin), amino acid contents and intestinal digestibility in dairy cows. Dry matter (r = 0.78), organic matter (r = 0.95), crude fibre (r = 0.91), neutral detergent fibre (r = 0.94), acid detergent fibre (r = 0.79) and acid detergent lignin (r = 0.48) presented positive linear correlation coefficients (r) with growth stage, whereas crude protein (r = -0.96), ether extract (r = -0.86) and nitrogen-free extract (r = -0.70) showed negative relationships. Total essential amino acid content decreased (r = -0.94) from 84.1 to 55.3 g/kg of dry matter with maturity, with r-values higher than -0.90 obtained between growth stage and contents of lysine, methionine, threonine and valine. With the exception of tyrosine (r = -0.68), r-values between growth stage and individual non-essential amino acids were all higher than -0.90. Total amino acid (r = -0.98) and nitrogen (r = -0.99) contents presented comparable tendencies with successive sampling times. Whereas no definite trends were detected for the amino acid composition of rumen incubated (16 hours) lucerne samples, the intestinal digestibility of total essential (r = -0.78), total non-essential (r = -0.58) and total (r = -0.69) amino acids as well as nitrogen (r = -0.99) decreased with growth. However, due to a small sample size (n = 4), most linear relationships between constituents and growth stage were insignificant. It can be concluded that, although limited in the sample size, this report presents information on the decrease in amino acid contents and intestinal amino acid digestibility as growth proceeds in lucerne (var. Palava) produced in the Czech Republic, which could be utilized in the feeding of ruminants. Keywords: lucerne, amino acids, intestinal digestibility Journal: Czech Journal of Animal Science Pages: 499-505 Volume: 53 Issue: 12 Year: 2008 DOI: 10.17221/367-CJAS File-URL: http://cjas.agriculturejournals.cz/doi/10.17221/367-CJAS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/cjs-200812-0002.txt Handle: RePEc:caa:jnlcjs:v:53:y:2008:i:12:id:367-CJAS Template-Type: ReDIF-Article 1.0 Author-Name: R. Stupka Author-Workplace-Name: Department of Animal Husbandry, Czech University of Life Sciences in Prague, Prague, Czech Republic Author-Name: J. Čítek Author-Workplace-Name: Department of Animal Husbandry, Czech University of Life Sciences in Prague, Prague, Czech Republic Author-Name: M. Šprysl Author-Workplace-Name: Department of Animal Husbandry, Czech University of Life Sciences in Prague, Prague, Czech Republic Author-Name: M. Okrouhlá Author-Workplace-Name: Department of Animal Husbandry, Czech University of Life Sciences in Prague, Prague, Czech Republic Author-Name: D. Kureš Author-Workplace-Name: Department of Animal Husbandry, Czech University of Life Sciences in Prague, Prague, Czech Republic Author-Name: K. Líkař Author-Workplace-Name: Department of Animal Husbandry, Czech University of Life Sciences in Prague, Prague, Czech Republic Title: Effect of weight and sex on intramuscular fat amounts in relation to the formation of selected carcass cuts in pigs Abstract: The objective of this study was to examine the influence of weight and sex on fat amounts in relation to the formation of selected carcass cuts in final hybrid pigs commonly kept in the Czech Republic. During the experiment 123 hybrid pigs of various genotypes were tested. The pigs were slaughtered at an average weight of 120.4 kg and dissected in detail. The tested pigs were divided into 5 weight categories, while the tissue composition of ham, joint, shoulder and neck was monitored with emphasis on the assessment of IMF content. A decrease in the lean meat proportion was shown, as well as an increasing fat proportion with increasing weight: for the joint the difference was 4.19%, for the ham 3.9%, shoulder 3.0%, and neck 2.31%. With increasing weight, a moderate increase in intramuscular fat occurred, whereas the differences between group 1 and 5 were: 1.68% for the ham, 0.58% (shoulder), 0.4% (joint) and 0.37% (neck). Concerning the influence of sex, barrows had statistically insignificant intramuscular fat content compared with gilts (excluding the neck). As for the protein content in the monitored carcass cuts, no influence of live weight and sex was recorded. Keywords: pig, meat, intramuscular fat, live weight, sex Journal: Czech Journal of Animal Science Pages: 506-514 Volume: 53 Issue: 12 Year: 2008 DOI: 10.17221/366-CJAS File-URL: http://cjas.agriculturejournals.cz/doi/10.17221/366-CJAS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/cjs-200812-0003.txt Handle: RePEc:caa:jnlcjs:v:53:y:2008:i:12:id:366-CJAS Template-Type: ReDIF-Article 1.0 Author-Name: N. Aldai Author-Workplace-Name: Área de Sistemas de Producción Animal, Servicio Regional de Investigación y Desarrollo Agroalimentario (SERIDA), Villaviciosa, Asturias, Spain Author-Name: M.E.R. Dugan Author-Workplace-Name: Lacombe Research Centre, Agriculture and Agri-Food Canada, Lacombe, Alberta, Canada Author-Name: A.I. Nájera Author-Workplace-Name: Área de Tecnología de los Alimentos, Facultad de Farmacia, University of the Basque Country, Vitoria-Gasteiz, Spain Author-Name: K. Osoro Author-Workplace-Name: Área de Sistemas de Producción Animal, Servicio Regional de Investigación y Desarrollo Agroalimentario (SERIDA), Villaviciosa, Asturias, Spain Title: N-6 and n-3 fatty acids in different beef adipose tissues depending on the presence or absence of the gene responsible for double-muscling Abstract: Levels of n-6 and n-3 PUFAs, including those with 20 and 22 carbon-chains, in concentrate-fed Asturiana de los Valles (AV) yearling bulls with and without the double muscling gene (mh/mh = 24, mh/+ = 26, +/+ = 25) were measured to examine if this gene influences the pattern of PUFA deposition in different adipose tissues. Fatty acid compositions of muscle tissue (longissimus thoracis) and intermuscular and subcutaneous adipose tissues were determined by gas chromatography. The composition of intramuscular fat was unique compared to the other two adipose tissues which were similar in composition. In general, n-6 and n-3 fatty acid elongation and desaturation products were affected by AV genotype and this effect was most evident in n-3 PUFAs of the intramuscular fat of mh/mh (n-6/n-3 = 11.8 and 18:2n-6/18:3n-3 = 25.3) compared to mh/+ and +/+ animals (mean values of n-6/n-3 = 9.86 and 18:2n-6/18:3n-3 = 15.5). PUFA elongation and desaturation end products did not accumulate to any great extent in intermuscular and subcutaneous adipose tissues. Beef from mh/mh cattle showed greater deposition rates of n-3 elongation and desaturation products but their absolute content of total n-3 fatty acids was lower (21 mg/100 g meat) in comparison with mh/+ and +/+ cattle (mean value of 25 mg/100 g meat). Keywords: polyunsaturated fatty acids, intramuscular, intermuscular, subcutaneous fat, genotype, double-muscling, breed Journal: Czech Journal of Animal Science Pages: 515-522 Volume: 53 Issue: 12 Year: 2008 DOI: 10.17221/365-CJAS File-URL: http://cjas.agriculturejournals.cz/doi/10.17221/365-CJAS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/cjs-200812-0004.txt Handle: RePEc:caa:jnlcjs:v:53:y:2008:i:12:id:365-CJAS Template-Type: ReDIF-Article 1.0 Author-Name: L. Mačuhová Author-Workplace-Name: Slovak Centre of Agricultural Research, RIAP Nitra, Nitra, Slovak Republic Author-Name: M. Uhrinčať Author-Workplace-Name: Slovak Centre of Agricultural Research, RIAP Nitra, Nitra, Slovak Republic Author-Name: J. Mačuhová Author-Workplace-Name: Institute for Agricultural Engineering and Animal Husbandry, Poing, Germany Author-Name: M. Margetín Author-Workplace-Name: Slovak Centre of Agricultural Research, RIAP Nitra, Nitra, Slovak Republic Author-Name: V. Tančin Author-Workplace-Name: Slovak Centre of Agricultural Research, RIAP Nitra, Nitra, Slovak Republic Title: The first observation of milkability of the sheep breeds Tsigai, Improved Valachian and their crosses with Lacaune Abstract: The aim of this study was to evaluate the milkability of two purebred breeds Tsigai (TS, n = 14) and Improved Valachian (IV, n = 15), their crosses with Lacaune 50% TS × 50% LC (n = 13), 50% IV × 50% LC (n = 9) and purebred Lacaune (LC, n = 19). The measurements of the milk flow were performed on day 90 ± 10 of lactation during evening machine milking. The recording of milk flow was carried out by the equipment for graduated electronic recording of milk level in a jar in one-second intervals. The milk flow curves were classified into four types: 1 peak (1P), 2 peaks (2P), plateau I (maximal milk flow over 0.4 l/min (PLI)), plateau II (maximal milk flow less than 0.4 l/min (PLII)). The last two types refer to ewes with steady milk flow during milking. Udder morphology traits were measured (cisternal depth, teat angle) and subjectively assessed by the use of linear scores (cistern depth, teat position). The average total milk yield was 0.335 ± 0.043, 0.392 ± 0.042, 0.407 ± 0.042 l in purebred TS, IV, LC resp. and 0.397 ± 0.046, 0.434 ± 0.056 l in crosses TS × LC and IV × LC, resp. The frequency of occurrence of different types of milk flow /1P:2P:PLI:PLII/ was 27, 47, 22, 4%, resp. The highest milk yield was observed in ewes with PLI (0.481 ± 0.045 l), followed by 2P (0.401 ± 0.029 l) and 1P (0.293 ± 0.036 l) type of milk flow curve (P = 0.0112). An opposite effect was observed in the percentage of machine stripping yield where 1P had 41.94 ± 3.83%, 2P 21.29 ± 3.04% and PLI 15.90 ± 4.70% (P < 0.0001). LC and TS × LC, IV × LC had the more horizontal teat position than TS and IV. It can be supposed that at least during around 69% milkings the sheep released oxytocin in response to machine milking and that TS, IV and their crosses with LC also have a suitable potential for machine milking. Keywords: dairy sheep, milk flow curves, udder morphology, machine milking Journal: Czech Journal of Animal Science Pages: 528-536 Volume: 53 Issue: 12 Year: 2008 DOI: 10.17221/369-CJAS File-URL: http://cjas.agriculturejournals.cz/doi/10.17221/369-CJAS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/cjs-200812-0005.txt Handle: RePEc:caa:jnlcjs:v:53:y:2008:i:12:id:369-CJAS Template-Type: ReDIF-Article 1.0 Author-Name: C.Y. Pan Author-Workplace-Name: College of Animal Science and Technology, Northwest A and F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, China Author-Name: X.Y. Lan Author-Workplace-Name: College of Animal Science and Technology, Northwest A and F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, China Author-Name: H. Chen Author-Workplace-Name: College of Animal Science and Technology, Northwest A and F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, China Author-Workplace-Name: Institute of Cellular and Molecular Biology, Xuzhou Normal University, Xuzhou, Jiangsu, China Author-Name: D.Y. Yang Author-Workplace-Name: College of Animal Science and Technology, Northwest A and F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, China Author-Name: L.S. Hua Author-Workplace-Name: College of Animal Science and Technology, Northwest A and F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, China Author-Name: X.B. Yang Author-Workplace-Name: College of Animal Science and Technology, Northwest A and F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, China Author-Name: C.Z. Lei Author-Workplace-Name: College of Animal Science and Technology, Northwest A and F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, China Author-Name: Y.K. Guo Author-Workplace-Name: College of Animal Science and Technology, Northwest A and F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, China Author-Name: B. Zhang Author-Workplace-Name: College of Animal Science and Technology, Northwest A and F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, China Author-Name: C.L. Zhang Author-Workplace-Name: College of Animal Science and Technology, Northwest A and F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, China Author-Name: X.T. Kang Author-Workplace-Name: College of Animal Science and Technology, Northwest A and F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, China Author-Name: I.Q. Wang Author-Workplace-Name: The Research Center of Beef Engineering and Technology in Henan, Zhengzhou, Henan, China Title: A DdeI PCR-RFLP detecting a novel missense mutation of the POU1F1 gene showed no effects on growth traits in cattle Abstract: In this study, a novel missense (NM_174579:c.1201C>T) mutation in exon 6 at the bovine POU1F1 locus is reported, which results in p.S284F, namely, Ser (TCT) > Phe (TTT) at position 284 of the mature protein. A DdeI PCR-RFLP was used to determine the genotypes. The polymorphism was studied in eight Chinese cattle breeds (Nanyang, n = 251; Qinchuan, 149; Jiaxian Red, 144; Chinese Holstein, 61; Luxi, 57; Angus, 49; Jinnan, 60; Guyuan, 192). The frequencies of the POU1F1 T allele in the analyzed populations ranged from 0.010 to 0.053. The relationships between the DdeI polymorphism and growth traits and body sizes were analyzed by adjusted linear model in 251 Nanyang cattle. Fixed effects of marker genotype, birth year, season of birth (spring vs. fall), age of dam, sire, farm and sex, and random effects of an animal were included. Statistical evaluation revealed no significant relationships between this polymorphism and birth weight, body weight and average daily gain for different growth periods (6-month old, 12-month old, 18-month old and 24-month old) body height, body length, heart girth and height at the hip cross for different growth periods (P > 0.05). Keywords: bovine, POU1F1 gene, PCR-RFLP, growth traits Journal: Czech Journal of Animal Science Pages: 532-527 Volume: 53 Issue: 12 Year: 2008 DOI: 10.17221/364-CJAS File-URL: http://cjas.agriculturejournals.cz/doi/10.17221/364-CJAS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/cjs-200812-0006.txt Handle: RePEc:caa:jnlcjs:v:53:y:2008:i:12:id:364-CJAS Template-Type: ReDIF-Article 1.0 Author-Name: M. Hladík Author-Workplace-Name: Biological Centre of Academy of Sciences of the Czech Republic, Institute of Hydrobiology, České Budějovice, Czech Republic Author-Workplace-Name: University of South Bohemia, České Budějovice, Czech Republic Author-Name: J. Kubečka Author-Workplace-Name: Biological Centre of Academy of Sciences of the Czech Republic, Institute of Hydrobiology, České Budějovice, Czech Republic Author-Workplace-Name: University of South Bohemia, České Budějovice, Czech Republic Author-Name: T. Mrkvička Author-Workplace-Name: University of South Bohemia, České Budějovice, Czech Republic Author-Name: M. Čech Author-Workplace-Name: Biological Centre of Academy of Sciences of the Czech Republic, Institute of Hydrobiology, České Budějovice, Czech Republic Author-Name: V. Draštík Author-Workplace-Name: Biological Centre of Academy of Sciences of the Czech Republic, Institute of Hydrobiology, České Budějovice, Czech Republic Author-Workplace-Name: University of South Bohemia, České Budějovice, Czech Republic Author-Name: J. Frouzová Author-Workplace-Name: Biological Centre of Academy of Sciences of the Czech Republic, Institute of Hydrobiology, České Budějovice, Czech Republic Author-Name: E. Hohausová Author-Workplace-Name: Biological Centre of Academy of Sciences of the Czech Republic, Institute of Hydrobiology, České Budějovice, Czech Republic Author-Name: J. Matěna Author-Workplace-Name: Biological Centre of Academy of Sciences of the Czech Republic, Institute of Hydrobiology, České Budějovice, Czech Republic Author-Workplace-Name: University of South Bohemia, České Budějovice, Czech Republic Author-Name: V. Matěnová Author-Workplace-Name: University of South Bohemia, České Budějovice, Czech Republic Author-Name: M. Kratochvíl Author-Workplace-Name: Biological Centre of Academy of Sciences of the Czech Republic, Institute of Hydrobiology, České Budějovice, Czech Republic Author-Workplace-Name: University of South Bohemia, České Budějovice, Czech Republic Author-Name: J. Peterka Author-Workplace-Name: Biological Centre of Academy of Sciences of the Czech Republic, Institute of Hydrobiology, České Budějovice, Czech Republic Author-Name: M. Prchalová Author-Workplace-Name: Biological Centre of Academy of Sciences of the Czech Republic, Institute of Hydrobiology, České Budějovice, Czech Republic Author-Name: M. Vašek Author-Workplace-Name: Biological Centre of Academy of Sciences of the Czech Republic, Institute of Hydrobiology, České Budějovice, Czech Republic Title: Effects of the construction of a reservoir on the fish assemblage in an inflow river Abstract: The construction of the Římov Reservoir on the Malše River in 1978 significantly influenced the fish assemblage within the river, above the reservoir. Fish species that had successfully colonised the reservoir after impoundment expanded to the inflowing river. The changes in the riverine fish assemblage up to the first impassable weir (4 km upstream) reflected the development of the reservoir assemblage after an impoundment boom of pike (Esox lucius), then the perch (Perca fluviatilis) dominated phase and later the final cyprinid-dominated phase. The changes in the fish fauna over the period 1978-2002 were significant (χ2, P < 0.001). During the cyprinid-dominated phase, roach (Rutilus rutilus) became the most abundant species both in the reservoir and in the river, outnumbering the pristine river species. We conclude that the cyprinid-dominated assemblage in the reservoir can be more aggressive in interfering with the river assemblage than the percid-dominated one. Keywords: riverine fish, assemblage development, Czech Republic, reservoir tributary, electrofishing Journal: Czech Journal of Animal Science Pages: 537-547 Volume: 53 Issue: 12 Year: 2008 DOI: 10.17221/370-CJAS File-URL: http://cjas.agriculturejournals.cz/doi/10.17221/370-CJAS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/cjs-200812-0007.txt Handle: RePEc:caa:jnlcjs:v:53:y:2008:i:12:id:370-CJAS