Селекция мясного скота на повышение эффективности использования корма

Уже сейчас породные ассоциации включают данный показатель в характеристики быков, размещенных в каталогах для продажи.

Введение производителей с известным значением RFI является важным шагом в направлении повышения эффективности кормления скота. В результате постоянного совершенствования технологий оценка эффективности кормления со временем будет улучшаться, поэтому улучшится и способность обнаруживать эффективных животных, превосходящих по этому признаку.

С целью снижения затрат и повышения точности идентификации животных с продуктивными генетическими характеристиками необходимо разработать единые правила (руководство, указания), которые будут включать принципы и методы сбора данных, технику измерения RFI с одновременным включением EPD и других параметров отбора, в том числе молекулярно-генетических маркеров.

Библиографический список

1. Association of residual feed intake with growth and slaughtering performance, blood metabolism, and body composition in growing lambs / X. Zhang, W. Wang, F. Mo, Y. La, Ch. Li, F. Li // Biology, Medicine. 2017. No 7 (1). 12681.

2. Berry D.P., Crowley J.J. Symposium on cell biology: genetics of feed efficiency in dairy and beef cattle // Journal of Animal Science. 2013. №91. P.1594-1613.

3. Connor E.E. Invited Review: Improving Feeding Efficiency in Dairy Production: Challenges and Opportunities // Journal Animal. 2015. №9. P. 395-408.

4. Cruzen S.M. Characterization of the skeletal muscle calpain/calpastatin system in growth models in swine and cattle. Graduate Theses and Dissertations // Journal Animal Science. 2013. P. 187.

5. Dzhulamanov K.M., Gerasimov N.P. Evaluation of the effectiveness of the use of feed by young Hereford breeds of different ecological and genetic groups // Animal husbandry and feed production. 2020. №1. P. 134-140.

6. Fiems L.O. Double Muscling in Cattle: Genes, Husbandry, Carcasses and Meat//US National Library of Medicin // Journal Animal. 2012. №2 (3). P. 472-506.

7. Growth performance, rumen fermentation, bacteria composition, and gene expressions involved in intracellular pH regulation of rumen epithelium in finishing Hu lambs differing in residual feed intake phenotype / Y.S. Liang [et al.] // Journal Anim Sci. 2017. №95 (4). P.1727-1738.

8. Kenny D.A., Fitzsimons C., Waters S.M. Invited review: Improving feed efficiency of beef cattle - the current state of the art and future challenges // Journal Animal. 2018. №12. P.1815-1826.

9. Molecular physiology of feed efficiency in beef cattle / C. Fitzsimons [et al.] // Book Biology of Domestic Animals. 2017. P. 120-163.

10. Phenotypic and genetic relationships of feed efficiency with growth performance ultrasound, and carcass merit traits in Angus and Charolais steers / F. Mao, L. Chen, M. Vinsky, E. Okine, Z. Wang, J. Basarab, D. H. Crews, C. Li // Journal of Animal Science. 2013. №91. P. 2067-2076.

11. Reducing GHG emissions through genetic improvement in feed efficiency: impact on economically important traits and intestinal methane production / J. A. Basarab [et al.] // Animal. 2013. №7. P. 303-315.

12. Relationship between the rumen microbiome and residual feed intake-efficiency of Brahman bulls stocked on bermudagrass pastures / J. C. McCann [et al.] // PLoS One. 2014. №9 (3). 91864.

13. Residual feed intake in beef cattle and its association with carcass traits, ruminal solid- fraction bacteria, and epithelium gene expression / A.A. Elolimy, M.K. Abdelmegeid, J. C. McCann. / Animal Sci Biotechnol. 2018. №67. P. 9.

14. Review: divergent selection for residual feed intake in the growing pig / H. Gilbert, Y. Billon, L. Brossard [et al.] // Journal Animal. 2017. P. 1427-1439.

15. Review: Biological determinants of between-animal variation in feed efficiency of growing beef cattle / P. Lawrence, D.A. Kenny, B. Earley, D.H. Crews // Journal Animal. 2018. V. 12. P. 321-335.

16. Savietto D., Berry D.P., Friggens N.C. Towards an improved estimation of the biological components of residual feed intake in growing cattle // Journal of Animal Science. 2014. №92. P. 467-476.

17. Selionova M.I., Plakhtyukova V.R. Polymorphism of the CAPN1 and GH genes and its relation-ship with the productivity of cattle of the Kazakh white-headed breed // IOP Conference Series: Earth and Environmental Science. 2020. No 132 (2). 2020 P. 10132.

18. Specific microbiome-dependent mechanisms underlie the energy harvest efficiency of ruminants / S.K. Shabat [et al.] // Journal of Microbial Ecology. 2016. №10. P. 2958-2972.

19. Transcriptome profiling of the rumen epithelium of beef cattle differing in residual feed intake / R.S. Kong [et al.] // BMC Genomics. 2016. №17. P. 592.

20. Yan L., Zhang B., Shen Z. Dietary modulation of the expression of genes involved in short-chain fatty acid absorption in the rumen epithelium is related to short-chain fatty acid concentration and pH in the rumen of goats // Journal Dairy Sci. 2014. №97 (9). P. 68-75.

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