ANALYSIS OF THE EFFECTIVENESS OF SEXED SEMEN IN A SELECTED HERD OF DAIRY COWS

Acta Scientiarum Polonorum Zootechnica Pub Date : 2023-01-23 DOI:10.21005/asp.2022.21.2.02

E. Januś, P. Sablik, A. Święciło

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引用次数: 1

Abstract

Biotechnological methods can be used in dairy cow reproduction to increase reproductive potential and improve economic outcomes of milk production. Biotechnological methods widely used in reproduction include artificial insemination and embryo transfer, and more recently insemination with sexed semen, which makes it possible to control the sex of the offspring. This study presents an analysis of the effectiveness of the use of sexed semen in a selected herd of dairy cows. The results confirmed the effectiveness of sexed semen at increasing births of female calves. Sexed semen was most effective among heifers. In that group the fewest insemination doses were required for conception (1.54), and pregnancy after the first insemination procedure was noted in 52.2% of cases. The values of selected fertility parameters (calving-to-first-service interval, service period, services per conception, and rate of conception after first service) did not deviate significantly from recommended values in cows inseminated with sexed and unsexed semen. Among the group of cows inseminated with sexed semen, fertility parameters were significantly more favourable than in the group inseminated with conventional semen.

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奶牛性精液效果分析

生物技术方法可用于奶牛繁殖，以增加繁殖潜力并提高牛奶生产的经济效益。生殖中广泛使用的生物技术方法包括人工授精和胚胎移植，以及最近使用性精液进行的受精，这使得控制后代的性别成为可能。本研究分析了在选定的奶牛群中使用性精液的有效性。研究结果证实了性精液对增加雌性小牛出生率的有效性。性精液在小母牛中最有效。在该组中，受孕所需的受精剂量最少（1.54），52.2%的病例在第一次受精后怀孕。在用有性精液和未有性精液受精的奶牛中，所选生育参数的值（产仔至第一次服务间隔、服务期、每次受孕的服务和第一次服务后的受孕率）没有显著偏离推荐值。在用性精液受精的奶牛组中，生育参数明显比用常规精液受精的组更有利。

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Acta Scientiarum Polonorum Zootechnica

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审稿时长

8 weeks