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Анотація
PREMATURE DROPPING OUT OF COWS FROM PRODUCTIVE HERD
Y. S. Masalovych, O. A. Valchuk, V. Y. Liubetskyi
Abstract.The article deals with the interconnection of lactation and culling of cows and possible reasons of premature dropping out of animals from productive herd. It was discovered that the majority of cows were culled during first lactation. Taking into consideration data from both farms it is possible to declare that most animals are culled because of obstetrical and gynaecological pathologies, alimentary system diseases and metabolism disorders. The majority of cows were dropped out till 600 day. It is necessary to note that on the farm with tied housing cows are dropped out mostly because of obstetrical and gynaecological pathologies while on the farm with freestall housing animals are dropped out because of obstetrical and gynaecological pathologies and diseases of locomotor apparatus.
Keywords: cow, lactation, culling, insemination, remedial youngsters, obstetrical and gynaecological pathology, feeding, heifer, milk productivity, reproductive ability.
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