Sheep productivity in relation to coarse fiber in new-born lambs of different genotypes

• Published in: IOP conference series. Earth and environmental science 2020-12, Vol.613 (1), p.12022
• Main Authors: Chernobai, E N, Voblikova, T V, Agarkova, N A, Efimova, N I
• Format: Article
• Language: English
• Subjects: Age; Animal husbandry; Animals; Birth; Breeding; Genotypes; Meat; Productivity; Rams; Sheep; Weight; Wool
• ISSN: 1755-1307; 1755-1315
• DOI: 10.1088/1755-1315/613/1/012022

The presence of coarse fiber in newborn animals indicates the viability and high productivity of animals in adulthood, therefore, when breeding meat-wool sheep of the Jalghin merino breed, flocks of lambs should be formed according to the amount of coarse fiber at birth. It was found that in all groups, animals born with coarse fiber at all age periods had superiority in live weight over animals born without coarse fiber. In group I of the fine line, 72.5% were born without coarse fiber, and 27.5% with coarse fiber. In group III of the strong line, 13.6% were born without coarse fiber of lambs, 86.4% with coarse fiber. In the second group of the medium line, there was practically the same ratio of without and with coarse fiber lambs and amounted to 48.7% and 51.3%, respectively. It was found that, at birth and at 4 months of age, in terms of live weight, rams with coarse fiber, regardless of their linearity, outnumbered their peers. At 14 months of age, the superiority of animals of group III in live weight in general over their peers in groups I and II was 8.8% (P