Optimal concentration of iodine for merino sheep breasts during lactation. The effect of increasing the mineral city in ratitudes of sheep-pigs by 25% on the improvement of dairy sheep. The growth of the absolute gain of lambs during their subsus.
Аннотация к работе
УДК 636.32/38.084 Ascania Nova Institute of Animal Breeding in the Steppe Regions named after M. F. Ivanov - National Scientific Selection-Genetics Center for Sheep Breeding 1, Soborna Street, Askania Nova, Chaplynka district, Kherson region, 75230, Ukraine The influence of various amount of iodine in the ewes rations on their productivity and growth of lambs in the suckling period M.M. Svistula, D.V. Yefremov, S.V. Horb ascitsr_zavlabgodivlya@ukr.net Annotation The optimum concentration of iodine in ration of Merino sheep in the lactation period has been determined. It was found that an increase the content of this mineral in the ewes rations by 25%, in relation to the existing feeding standards, promotes an increase of the milk productivity of ewes to 40 kg or by 11% compared to the results of the productivity of the animals in the control group. The presence of this amount of mineral in the ration provides the absolute increase of lambs growth during the suckling period to 26.0 kg, compare at 22.2 kg in the control. Similar indices were obtained for the growth rate of the young animals, which in animals of the 1st test group increased to 289 g per day that is 17% (P