Conception & Fertitlity

Heat stress and estrus expression

Create changes to alleviate some of the effects of heat stress on the reproductive performance of lactating cows. FULL STORY »

No impact of metabolic parameters on oocyte quality

Researchers in Ireland recently attempted to examine the impact of what happens to cows metabolically after they calve—during which time cows typically undergo negative energy balance—on oocyte quality. FULL STORY »

Cool cows to improve reproduction

Many events necessary for establishment of pregnancy in dairy cattle can be compromised by heat stress. Providing cooling for a few days around ovulation can reduce the magnitude of heat stress on fertility. FULL STORY »

Controlled energy benefits reproduction

Cows fed controlled energy during the close-up dry period had a shorter interval between calving and pregnancy, according to new research from the University of Illinois. FULL STORY »

Heat stress webinars coming up

Mark your calendar for two heat stress webinars coming up next month. FULL STORY »

Linking lameness and fertility

It's well-known that lame cattle can have reduced milk production and increased disease incidence, but the effects of lameness can also negatively affect fertility and reproduction. FULL STORY »

Impact of lameness on reproduction in grazing herds

While the link between lameness and reproduction has been studied for quite some time, less research has been done on the effects of lameness in cows on pasture. To provide information about this, one farm with 463 cows in the lower North Island of New Zealand participated in a study designed to assess the effect of clinical lameness on conception rate. FULL STORY »

Linking conception rate and level of somatic cell count

The Hebrew University in Israel evaluated the effects of mastitis, determined by the pattern and level of somatic cell count (SCC) around the first artificial insemination (A.I.) on conception rate (CR). FULL STORY »

Penn State dairy reproduction drill down tool now available online

The Penn State Reproduction Drill-Down Tool provides a systematic approach to critically analyze the major factors affecting heat detection rate and conception rate so that problem areas can be highlighted and discussed. FULL STORY »

Back to basics: Explaining the estrous cycle

A working knowledge of the dairy cow’s estrous cycle and its associated hormones can help you improve your herd’s conception rates and boost reproductive efficiency. FULL STORY »

Ovarian size matters

High variation in dairy cow ovary size and the number of follicles and high quality oocytes in ovaries (referred to as ovarian reserve) impacts ovarian function and fertility. Based on once or twice a day ovarian ultrasonography of cattle, the peak number of follicles growing during different follicular waves of the estrous cycle (referred to as antral follicle count, or AFC) varied seven-fold among animals but was very repeatable within animal regardless of age. FULL STORY »

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Comprima V 150 XC T and Comprima V 180 XC T round balers

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