Evaluation of breeding values of sires and cows in dairy breeds
Journal Title: Біологія тварин - Year 2017, Vol 19, Issue 1
Abstract
The article is devoted to questions of evaluation of breeding values of sires and cows in modern dairy cattle. The most appropriate for the conditions of the Ukraine model of evaluation of dairy and dual-purpose sires with BLUP Animal Model has been developed. Estimates of genetic parameters shows a possibility of successful breeding work for milk production traits as well as reproduction and productive longevity. Values of genetic correlations between economically important traits point out to necessity of including reproduction and productive longevity traits into selection index used to select sires. The obtained genetics trends give evidence that since 2007 the tendency of increase of genetic potential of Ukrainian Black-and-White and, to some extent, Holstein breeds in dairy productivity is observed, while for Ukrainian Red-and-White breed there is inverse tendency. Withal in Ukrainian Black-and-White dairy breed during this period the stable genetically grounded decrease of level of reproduction is observed, while in Holstein and Red-and-White breeds this trait stays at approximately the same level and in Ukrainian Red-and-White dairy breed there is some genetically grounded decrease of calving interval. As to productive longevity since 2004 in Holstein and since 2007 in Ukrainian Red-and-White and Red dairy breeds there is positive tendency of increase of this trait while in Black-and-White breed after increase of productive longevity prior to 2006–2009 period decrease of this trait occurred.
Authors and Affiliations
V. O. Danshyn, S. Y. Ruban, V. Y. Afanasenko
Keywords
Related Articles
- EP ID EP262435
- DOI 10.15407/animbiol19.01.044
- Views 119
- Downloads 0
Development of technology of blood coagulation factor VIII purification by the method of affinity chromatography on silica sorbents
The manufacturing processes of chromatographic purification are used increasingly for plasma fractionation in the last few years. Implementation and combination of ion-exchange, affinity and size-exclusion chromatography...
Effect of plant extracts on the digestive process, productivity and quality of the poultry production
The data about the effective using of plant extracts in the poultry to intensify digestion, increasing productivity and obtaining high quality products are summarized in this article. The different mixtures of herbal ex...
Zinc metabolism in high yielding dairy cows when fed mixed-ligand complexes of Zinc, Manganese and Cobalt
The use of chelates in the diets of high-yielding cows affects the intensity of microflora growth, increasing the efficiency of digestion and fermentation of feed in the digestive tract. Therefore, scientific studies to...
Indicators of humoral immunity at horses with different courses of uveitis
The article presents results of the research of content of IgA, IgM and IgG, and circulating immune complexes (CIC) in clinically healthy horses (n=10) and horses with acute, subacute and chronic uveitis (n=10). During t...
Correction of electrolyte imbalance in sport horses
The article presents the results of studies on the correction of electrolyte balance in sports horses during physical activity of medium intensity and shows the positive effect of the use of minerals on rehydration. Aft...