Dry period management and optimization of post-partum reproductive management in dairy cattle

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Date

2011-09

Authors

Wiltbank, Milo Charles

Journal Title

Journal ISSN

Volume Title

Publisher

Wiley

Abstract

Dry period and early post-partum management are decisive factors for fertility in lactating dairy cows. Previous studies have shown that decreased dry matter intake (DMI) and increased non-esterified fatty acids (NEFA) negatively affect fertility and subsequent milk production. The traditional dry period decreases DMI prior to parturition, resulting in a decrease in energy intake. A negative energy balance increases NEFA concentration, and increased NEFA may impair the immune system, especially by decreasing neutrophil function prior to parturition. Earlier studies have shown that postpartum health disorders, including retained placenta and metritis, were correlated with periparturient neutrophil function. In addition, decreased DMI is also linked to a reduced body condition score (BCS) in dairy cows. These events in the periparturient period negatively affect fertility. Some manipulation, such as shortening the dry period, may be a solution to increased DMI in the periparturient period, preventing postpartum disorders and subsequent fertility issues. This article aims to explain the effects of shortening the dry period on reproduction and early post-partum treatments to improve fertility. In addition, timed artificial insemination protocols will be discussed for use during the post-partum period to improve fertility in dairy cows.

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Keywords

Agriculture, Reproductive biology, Veterinary sciences, Timed artificial-insemination, Energy-balance, Milk-production, Neutrophil function, Pregnancy rates, Holstein cows, Presynchronization protocol, Synchronized ovulation, Follicular development, Subsequent lactation, Bos

Citation

Gümen, A. vd. (2011). ''Dry period management and optimization of post-partum reproductive management in dairy cattle''. Reproduction in Domestic Animals, 46(3), Special Issue, 11-17.