Characteristics of Lactation Curve and Reproduction in Dairy Cattle

Q3 Agricultural and Biological Sciences

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis Pub Date : 2023-01-01 DOI:10.11118/actaun.2022.028

Sergiy Ruban, V. Danshyn, М. Matvieiev, O. O. Borshch, O. Borshch, L. Korol-Bezpala

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引用次数: 1

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 calving season, days open, and cow's origin; lactation persistency of cows was more influenced by environmental factors (parity, calving season, days open) than by the sire. In order to improve the level of reproduction in dairy herds, it is advisable to take into account the lactation persistency of cows, since it has negative relationship with days open (r = -0.074). To improve lactation persistency it is necessary to use for insemination of cows semen of sires with high breeding values for this trait.

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奶牛泌乳曲线及繁殖特征

这项研究的目的是评估奶牛泌乳活动的变化及其对繁殖水平的影响，并研究它们在遗传和环境因素方面的波动。研究人员选取了807头不同年龄的奶牛作为样本。这些奶牛被饲养在乌克兰哈尔科夫地区的一个商业农场。本研究使用的数据来自DairyPlan C21软件。结果表明，产犊季节、开犊天数和奶牛产地对Wood泌乳曲线模型参数有显著影响;环境因素(胎次、产犊季节、开放天数)对奶牛泌乳持续性的影响大于父系。为了提高奶牛群的繁殖水平，应考虑奶牛的泌乳持续性，因为奶牛的泌乳持续性与开日数呈负相关(r = -0.074)。为了提高泌乳期的持续性，有必要将具有较高育种价值的母猪的精液用于该性状的授精。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis Agricultural and Biological Sciences-Agricultural and Biological Sciences (all)

CiteScore

1.40

自引率

0.00%

发文量

审稿时长

24 weeks