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Some Biological Characteristics and Prediction of Sheep Productivity at Different Variants of Breed Selection

Kolosov Yuri A.1, Klimenko Aleksander I.1, Vasilenko Vyacheslav N.1, Shirokova Nadezhda V.1, Getmantseva Lyubov V.1, Kolosov Anatoli Yu1, Aboneev Vasili V.2, Chizhova Ludmila N.2, Marchenko Vyacheslav V.2, Mikhailenko Antonina K.2 and Aboneev Dmitri V.2
  • 1 Laboratory of Molecular Diagnostics and Biotechnology of Farm Animals, Don State Agrarian University, Persianovsky, Rostov Region, Russia, 1, Krivoshlykov, 346493, Russia
  • 2 GNU Stavropol Research, Institute of Livestock Breeding and Fodder Production, RAAS, Stavropol Krai, Stavropol Russia, lane Zootechnical, Russia

Abstract

The paper presents the findings on the morpho structural diversity of sheep placenta, depending on such factors as age, exterior and physique characteristics, breeds, ewes prolificacy that are fundamental in assessing progeny viability. The experiment involved the ewes of the Caucasian and North Caucasian meet-and-wool breeds inseminated by the rams of the same breeds as well as the Texel, Poll Dorset, Edilbay and their progeny. The biomaterial for the research was the placenta and blood of the experimental animals. Ewes aged 2.5 and 3.5 years had the lightest placenta – 165 and 172 gr, ewes aged 4.5 and 5.5 years had the heaviest placenta – 230 and 247 gr. It has been also determined that the most favourable age for gestation in ewes is 4.5-5.5 years. Interrelation of the placenta morphostructural parameters (placenta weight, the number and size of cotyledons) and the lambs live weight and productivity has been established. This allows us to view placenta as a bioscopic material for assessing and prediction of future sheep productivity at early age.

OnLine Journal of Biological Sciences
Volume 17 No. 4, 2017, 343-347

DOI: https://doi.org/10.3844/ojbsci.2017.343.347

Submitted On: 4 July 2017 Published On: 1 December 2017

How to Cite: A., K. Y., I., K. A., N., V. V., V., S. N., V., G. L., Yu, K. A., V., A. V., N., C. L., V., M. V., K., M. A. & V., A. D. (2017). Some Biological Characteristics and Prediction of Sheep Productivity at Different Variants of Breed Selection. OnLine Journal of Biological Sciences, 17(4), 343-347. https://doi.org/10.3844/ojbsci.2017.343.347

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Keywords

  • Ewe
  • Viability
  • Mother Organism
  • Progeny
  • Placenta
  • Correlation