Biochemical indicators blood heifers Ukrainian red dairy breed in according from the length of their prenatal development

  • L. Karlova
Keywords: blood, productivity, exchange of matters, enzymes, uterine development, korelyaciya

Abstract

The results of studies of biochemical parameters of blood heifers Ukrainian red dairy breed depending on the length of their fetal development. It is set that middle duration of uterine development of experimental heifers laid down 283,8 day. (49,4 %) developed in the womb of mothers within the limits of 280–285 days, other individuals marked considerable enough deviations from these classes. A difference between extreme equaled 19 days among them, and for separate animals she folded 26 days. The biochemical indexes of blood of experimental heifers meet a physiology standard that testifies to the kind. However, there are differences after most indexes. Yes, heifers with the middle period of uterine development after most indexes of blood prevail the persons of the same age with short and prolonged uterine development. It testifies to more intensive motion of metabolic processes in their organism that in turn substantially influences on the level of the suckling productivity. They for certain (after middle for two lactations) prevailed individuals with the prolonged duration after a yield on 244±89,4 kg, amount of suckling fat on 8,8±3,08 kg, and with short duration accordingly on 210±84,0 kg and 8,3±2,97 kg. Reliable negative correlative connection is set between a yield and content of fat in milk of cows with different duration of uterine development in limits from 0,124±0,1538 for cows with the short period of uterine development to 0,739±0,0746 with prolonged. Obtained data testify to more intensive metabolism in their organism and can be used for an early estimation them productive qualities.

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Section
Agricultural sciences (animal husbandry)