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Dairy Day, 1987

Dairy Day, 1987

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Cow-side milk progesterone testing

Call, Edward P.; Stevenson, Jeffrey S. (Kansas Agricultural Experiment Station, 2012-09-20)

Cow-side milk progesterone tests are effective in determining the presence of an active corpus luteum (CL) on the ovary. The test is best used as an adjunct to the Preventive Herd Health Program (PHHP) as a means of ...
Update on gonadotropin-releasing hormone treatments for repeat breeders

Stevenson, Jeffrey S. (Kansas Agricultural Experiment Station, 2012-09-20)

In three of six studies involving over 1,650 cows, treatment of lactating dairy cows with 100 µg GnRH (2 cc Cystorelin®) at the time of third or fourth insemination improved conception rates by 12 percentage points. When ...
Update on heat detection aids

Stevenson, Jeffrey S.; Call, Edward P. (Kansas Agricultural Experiment Station, 2012-09-20)

Poor heat detection is a major cause of reproductive failure in most dairy herds. About one-half of the heat periods are undetected, resulting in prolonged calving intervals. In many cases, the problem is serious enough ...
Early lactation somatic cell count should be low

Dunham, James R. (Kansas Agricultural Experiment Station, 2012-09-20)

Cows and heifers in milk for fewer than 50 days, as shown on the DHIA Somatic Cell Count report, should have a lower average Somatic Cell Count than cows in milk for more than 300 days, if the dry cow mastitis treatment ...
USDA-DHIA Sire Summaries-AI Advantage

Call, Edward P. (Kansas Agricultural Experiment Station, 2012-09-20)

USDA-DHIA Sire Summaries are published semiannually and provide the dairy industry with an accurate evaluation of the transmitting ability of bulls for milk and milk components. Genetic potential is established at the ...

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