Czech Journal of Animal Science, 2006 (vol. 51), issue 1
Genetic diversity between seven Central European cattle breeds as revealed by microsatellite analysis
V. Czerneková, T. Kott, G. Dudková, Z. Sztankóová, J. Soldát
Czech J. Anim. Sci., 2006, 51(1):1-7 | DOI: 10.17221/3902-CJAS 
This study compares the genetic variation in seven cattle breeds from theterritory ofCentralEurope. Eleven polymorphic microsatellite loci were used to detect differences in the polymorphism of genetic markers in Czech Pied (Simmental), Slovakian Pied (Simmental), Slovakian Pinzgau,Holstein, Polish Red, German Red, and Czech Red breeds. For these loci, allele frequencies, heterozygosity, polymorphism information content, effective population size, and genetic distances were evaluated. The phylogenetic tree was constructed using the unweighted pair group method with arithmetic mean and it showed that the Central European Red breeds tended to cluster...
Economic analysis of different dairy farm sizes in Burdur province inTurkey
V. Demircan, T. Binici, H. Koknaroglu, A.R. Aktas
Czech J. Anim. Sci., 2006, 51(1):8-17 | DOI: 10.17221/3903-CJAS
The purpose of this study was to analyze the economic structure of different dairy farm sizes in Burdur province in Turkey. Data were acquired by conducting a survey on 132 dairy farms selected by the stratified random sampling method. Dairy farms were divided into three groups according to their sizes and were analyzed accordingly. It was found that production cost decreased and profit increased as animal unit per farm increased. Production costs per animal unit for the first, second, and third group were 2 634.09, 2 252.01 and 1 930.52 YTL, respectively (1 USD = 1.42 YTL), whereas the net profit was -267.36, 25.95 and 405.99 YTL, respectively. When...
Pig carcass quality in relation to carcass lean meat proportion
J. Pulkrábek, J. Pavlík, L. Vališ, M. Vítek
Czech J. Anim. Sci., 2006, 51(1):18-23 | DOI: 10.17221/3904-CJAS
The objective of the study was to quantify differences in the carcass composition of pig carcasses with different lean meat proportions. Totally 132 carcasses with lean meat proportions ranging from 45 to 65% were analysed. The average lean meat proportion in the analysed set of carcasses was 55.38% (s = 4.319). The carcasses were classified into the groups according to their lean meat proportion (R, 45.0 to 49.9%; U, 50.0 to 54.9%; E, 55.0 to 59.9%; S, more than 60.0%). Carcasses from each group were cut into primal cuts and the main cuts (leg, loin, shoulder and belly with bones) were further separated into different tissues. Carcass value...
Influence of various lysine and threonine levels in feed mixtures for lactating sows on milk quality and piglet growth
J. Bojčuková, F. Krátký
Czech J. Anim. Sci., 2006, 51(1):24-30 | DOI: 10.17221/3905-CJAS
The quality of produced milk and piglet growth were investigated in three groups of lactating Large White sows fed three mixtures containing different levels of lysine, threonine and crude protein. Piglets were weighed immediately after delivery and then in weekly intervals. At the age of 21 days the litter weight was the highest in group B (67.96 kg; P < 0.05), i.e. in the group with the highest dietary content of amino acids. Milk from lactating sows was sampled and analysed. An increased level of dietary amino acids became evident in milk at the first milk sampling (i.e. three days after delivery), when the content of lysine and threonine...
The effect of sex and rearing system on carcass composition and cut yields of broiler chickens
S. Bogosavljevic-Boskovic, V. Kurcubic, M.D. Petrovic, V. Radovic
Czech J. Anim. Sci., 2006, 51(1):31-38 | DOI: 10.17221/3906-CJAS
The objective of this study is an analysis of meat quality in broilers of standard fast-growing hybrid Hybro G, reared in two different non-industrial systems (extensive rearing in a poultry house or "extensive indoor" system and rearing in a poultry house using a free range or "free-range" system). Quality parameters, i.e. proportions of basic carcass parts (breasts, drumsticks and thighs), abdominal fat, and proportions of basic tissues (muscles, bones and skin) in more valuable carcass parts, were investigated. The aim of the investigation was to analyse the effect of the two non-industrial rearing systems and broiler sex on the above-mentioned...
Breeding value evaluation in Polish fur animals: Estimates of (co)variances due to direct and litter effects for fur coat and reproduction traits
H. Wierzbicki, W. Jagusiak
Czech J. Anim. Sci., 2006, 51(1):39-46 | DOI: 10.17221/3907-CJAS
5 540 records of the arctic fox fur coat and reproductive traits collected in 1983-1999 were studied. The analyzed traits were: body size (BS), colour type (CT), colour purity (CP), coat density (CD), hair length (HL), general appearance (GA), total score (TS), skin length (SL), litter size at birth (LSB), litter size at weaning (LSW), number of dead pups (NPD), pup weight at weaning (PW), and pregnancy length (PL). (Co)variance components were estimated using a derivative-free algorithm of REML and a multi-trait animal model. Random effects were direct additive, common litter environment and residual. The genetic parameters for the fur coat traits...