image of a Holstein calf's head

Pick a Straw: Conventional, sexed, or beef semen?

Should dairy producers use conventional semen, sexed semen, or beef semen when breeding their heifers and cows?  The simple answer is:  “It depends.” UW-Extension & UW-Madison Department of Dairy Science Dairy Management Specialist Victor Cabrera shares in the Progressive Dairyman article, Pick a straw:  Conventional, sexed, or beef semen? the factors to contemplate what type […]

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Heat Stress & Reproduction Podcast Series

Heat stress can have a big effect on dairy cattle. One thing that we see a lot of are decreased conception rates during the hot, summer months but why is that? In this month’s podcast series Heat Stress & Reproduction, UW-Extension specialists and industry talk about why you’re seeing reproductive losses, how to minimize them during the […]

Image of Holstein cow in a field

Strategies for Nonpregnancy Diagnosis in Dairy Cows

In the May 2016 Hoard’s Dairyman webinar, UW-Extension Dairy Cattle Reproductive Specialist Paul Fricke shares Strategies for nonpregnancy diagnosis in dairy cows. Early identification of nonpregnant cows is key to any reproductive program. In the webinar Dr. Fricke discusses the latest data on traditional and emerging methods of nonpregnancy diagnosis and the best ways to […]

mother with twin calves

Double Vision: Management of Twinning in Dairy Cows

Twinning in Holstein dairy cows has increased over time concurrent with increased milk production. More than 95% of twins in Holsteins arise due to double ovulations resulting in dizygotic twins. It is now clear that low progesterone during growth of a preovulatory follicle increases the incidence of double ovulation. Increased hepatic metabolism of progesterone as […]

Clandeboye Champion Willow Cow

Fertility Programs to Achieve High 21-day Pregnancy Rates

Hormonal synchronization protocols have been incorporated widely into reproductive management programs by dairy farmers (Caraviello et al., 2006; Norman et al., 2009). The initial impact of timed AI protocols on 21-day pregnancy rates in U.S. dairy herds has been to increase the AI service rate (Norman et al., 2009); however, a deeper understanding of the […]