Effect of application of feeding by norms of lambs from Ile de France breed

Abstract

SUMMARY The aim of this study was to establish the effect of feeding by norms of female breeding lambs from Ile de France breed. The experiment was carried out in the Institute of Animal Science -Kostinbrod. The experimental animals were divided in 2 groups according to their type of birth -single (11 lambs) and twin (10 lambs). The lambs were equal in age (118±0.91). The experiment continued 90 days. Food intake was controlled daily. The composition of ratio and the amount of forages were according to the requirements of the norms by Todorov and Dardjonov, 1995. The chemical analysis of the forage, which was used, was done by adopted methods The obtained results showed, the applied norm feeding ensured reaching of live weight, which respond to the age and type of birth (singles -50.27 kg, twins -44.7 kg) of the breeding female lambs from Ile de France breed. The average daily intake of forage, energy and protein was 1.626 kg, 1.625, 123.17 g for the singles, and 1.526 kg, 1.5, 116.9 g for the twins. The gain efficiency per 1 kg for forage, energy and protein was 11.70 kg, 11.69 FUG, 886.14 g for the singles and 10.82 kg, 10.64 FUG and 829.08 g for the twins