2023
DOI: 10.11118/actaun.2022.028
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Characteristics of Lactation Curve and Reproduction in Dairy Cattle

Abstract: The purpose of the research was to assess changes in the lactation activity of cows and their impact on the level of reproduction, as well as to study their fluctuations with respect to genetic and environmental factors. A sample of 807 cows of various ages was formed for the study. The cows were kept on a commercial farm in Kharkiv region, Ukraine. Data from DairyPlan C21 software were used in the study. It was revealed that the parameters of the Wood lactation curve model were significantly influenced by the… Show more

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Cited by 7 publications
(6 citation statements)
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“…The method of variational statistics was applied based on the calculation of the arithmetic mean (M), the root-mean-square error (m) and the reliability of the difference between comparative indicators (P) and the materials of the conducted studies were processed (Ruban et al, 2020)…”
Section: Methodsmentioning
confidence: 99%
“…The method of variational statistics was applied based on the calculation of the arithmetic mean (M), the root-mean-square error (m) and the reliability of the difference between comparative indicators (P) and the materials of the conducted studies were processed (Ruban et al, 2020)…”
Section: Methodsmentioning
confidence: 99%
“…This led to significant success and considerably increased milk yields and milk fat and protein, especially in Holstein cows (Guinan et al, 2023;Cole et al, 2021). These data indicate that the increase in milk production was achieved both through careful and well-organized breeding, which provided high genetic progress, as well as due to optimal conditions of nutrition, housing, and welfare of dairy cows (Berry, 2018;Ruban et al, 2022).…”
Section: Introductionmentioning
confidence: 91%
“…Depending on the composition of the diet, its duration is 1.4-1.6 times longer than eating fodder. Moreover, repeating these processes during the day is multiple (Ruban et al, 2022).…”
Section: Introductionmentioning
confidence: 99%