Czech Journal of Animal Science, 2012 (vol. 57), issue 4
Single-step prediction of genomic breeding value in a small dairy cattle population with strong import of foreign genes
J. Přibyl, J. Haman, T. Kott, J. Přibylová, M. Šimečková, L. Vostrý, L. Zavadilová, V. Čermák, Z. Růžička, J. Šplíchal, M. Verner, J. Motyčka, L. Vondrášek
Czech J. Anim. Sci., 2012, 57(4):151-159 | DOI: 10.17221/5890-CJAS 
The breeding value (EBV) of Holstein cattle milk performance from the first lactation was evaluated using a regular Animal Model or by Single-Step Prediction of the genomic breeding value (GEBV). A total of 838 bulls were genotyped using the Illumina BovineSNP50 Beadchip V2. Two overlapping sets of milk performances were evaluated: calving years 1991-2004, with 729 341 lactations and 1 394 487 animals in the pedigree and calving years 1996-2009, with 808 436 lactations and 1 487 608 animals in the pedigree. The older data set included 526 genotyped bulls, in which the daughters' milk performance was known for 210 individuals. All of the genotyped animals...
Reduction of traits for genetic evaluation of linear described traits in the Old Kladruber horse
L. Vostrý, J. Přibyl, P. Šimeček
Czech J. Anim. Sci., 2012, 57(4):160-170 | DOI: 10.17221/5891-CJAS
The estimated genetic parameters were used for selection of important conformation traits and reduction in the number of the described characteristics. For reduction in the number of described traits from the original 36 to 24, the traits were selected according to: measure of genetic similarity (cluster analysis), measure of uncertainty multidimensional quantity, value of the variance of aggregate genotype, value of the variance of selection index and correlation of trait to the first principal component of the genetic matrix. Reduction in the number of the described traits was based on the value of heritability coefficient and genetic correlations...
Microsatellite variability in nutria (Myocastor coypus) genetic resource in the Czech Republic
K. Kaplanová, L. Putnová, M. Bryndová, P. Bartoňová, I. Vrtková, J. Dvořák
Czech J. Anim. Sci., 2012, 57(4):171-177 | DOI: 10.17221/5892-CJAS
Nutria (Myocastor coypus) is a large rodent native to South America which was introduced worldwide originally with the intention of fur farming. Three colour forms (Standard, Moravian Silver, and Prestice Multicolour) fall into the Farm Animal Genetic Resources of the Czech Republic protected by the National Programme on Conservation and Utilization of Plant, Animal and Microbial Genetic Resources for Food and Agriculture coordinated by the National Focal Point. The objective of our investigation in the Czech Republic was to establish microsatellite panel for nutria and determine microsatellite variability in the local nutria population, levels...
Allele frequency in loci which control coat colours in Hucul horse population
A. Stachurska, A. Brodacki, J. Grabowska
Czech J. Anim. Sci., 2012, 57(4):178-186 | DOI: 10.17221/5893-CJAS
The objective of the study was to determine the frequency of alleles which produce coat colours in Hucul horse population in Poland. The breed is included in the Global Strategy for Management of Farm Animal Genetic Resources, hence its gene pool should remain in unaltered state. Huculs are bay, black, blue dun, yellow dun, tobiano, and chestnut. Grey and chestnut Huculs have always been undesirable. The material consisted of all 1022 matings which resulted in subpopulations recorded in Studbook volumes. The recessive allele frequency was estimated as the square root of recessive genotype frequencies in ASIP (A), MC1R (E), DUN (D), KIT (To region),...
Rapid sexing of selected Galliformes by polymerase chain reaction
J. Kalina, J. Mucksová, H. Yan, P. Trefil
Czech J. Anim. Sci., 2012, 57(4):187-192 | DOI: 10.17221/5894-CJAS
Vent sexing of one-day-old chicks in commercial hatcheries has long been common practice and can be highly accurate. However, there are circumstances when this technique is not applicable such as smaller breeds, non-domestic birds, or where is the necessity of precise sexing. In this study we present a simple and reliable method for fast gender determination in selected Galliformes for which phenotypic determination of sex is difficult until maturity. Four species were tested: two commercial species - chicken (Gallus gallus) and turkey (Meleagris gallopavo), and two game birds - common pheasant (Phasianus colchicus) and wood...
Bone quality characteristics and performance in broiler chickens fed diets supplemented with organic acids
S. Świątkiewicz, A. Arczewska-Wlosek
Czech J. Anim. Sci., 2012, 57(4):193-205 | DOI: 10.17221/6004-CJAS
A 6-week experiment with broilers was conducted to study the effect of diet supplementation with organic acids on performance, characteristics of the tibia and femur bones, and the calcium, phosphorus and zinc balance. A total of 320, one-day-old, Ross 308 chickens were randomly assigned to 1 of 8 treatments. A 2 × 4 factorial arrangement was used, with two dietary levels of calcium and available phosphorus (standard - 9.4/9.2 g Ca/kg and 4.3/4.0 g available P/kg, or reduced - 8.3/8.1 g Ca/kg and 3.7/3.5 g available P/kg, for the starter/finisher feeding phases, respectively), and with diets supplemented with organic acids (none; short chain fatty...