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The aim of the present study was to determine the effects of the body condition of heifers at calving on the replenishment of energy and fat reserves at the first stage of lactation as well as on fertility and productivity. The study was performed on 101 primiparous Holstein-Friesian. Body condition was assessed postpartum, and then at two-week intervals until 20 weeks of lactation. Production traits...
The examination have been undertaken in order to determine the influence of avoparcin given to cows during high pregnancy and early lactation on their health, fertility and milk yields. The data were assessed in relation to the indices of lipid metabolism. The studies included 120 cows divided into two groups, i.e. the experimental one and the control. The experimental group was given avoparcin to...
Celem pracy było zbadanie wpływu preparatu Acinormin na zachowanie się parametrów biochemicznych i rkz, przebieg puerperium i wydajność mleczną krów. Wykazano pozytywne buforujące działanie preparatu, poprawiające niestabilną przemianę materii i regulujące homeostazę ustroju. U krów doświadczalnych obserwowano wyraźny wzrost poziomu Mg w surowicy 3 tygodnie po porodzie oraz stan równowagi w zakresie...
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