Milk progesterone kits: On-farm use

K-REx Repository

Show simple item record Stevenson, Jeffrey S. Call, Edward P. 2012-10-04T19:30:12Z 2012-10-04T19:30:12Z 2012-10-04
dc.description.abstract Diagnosing pregnancy in dairy cattle is an essential part of good management. The objective of this procedure is not to identify pregnant cows, but to identify the nonpregnant cows, those that become the breeding challenge. Economics dictate that verifying the pregnancy or "open" status of the cow is essential. Estimated losses of $1 to $3 per cow per day when conception is delayed beyond 85 days postpartum emphasize the importance of inseminating cows early to allow for 12 to 13-month calving intervals. A number of diagnostic tools are available and increasing scientific knowledge and technology will provide for improved pregnancy diagnosis in the future through use of cowside tests. These available procedures include: 1) continuous detection of estrus to identify inseminated cows that return to heat 18 to 24 days post breeding (repeat heats); 2) palpation of the uterus and its contents per rectum (sometime after day 35 of suspected pregnancy depending on the expertise of the clinician); 3) radioimmunoassays (RIA) of progesterone in milk, blood serum, and plasma; and 4) enzyme-linked immunoassays (ELISA) for progesterone in milk, blood serum, and plasma. At least five chemical cowside test kits are now available that use the ELISA-type tests for detecting progesterone in milk and one for blood serum in heifers (see reference 3). en_US
dc.publisher Kansas Agricultural Experiment Station en_US
dc.relation.isPartOf Kansas Agricultural Experiment Station contribution; no. 87-88-S en_US
dc.relation.isPartOf Report of progress (Kansas Agricultural Experiment Station); 506 en_US
dc.subject Dairy en_US
dc.subject Milk progesterone kits en_US
dc.subject Corpus luteum en_US
dc.subject Estrous cycle en_US
dc.title Milk progesterone kits: On-farm use en_US
dc.type Conference paper en_US 1986 en_US
dc.citation.epage 82 en_US
dc.citation.spage 81 en_US
dc.description.conference Dairy Day, 1986, Kansas State University, Manhattan, KS, 1986
dc.contributor.authoreid jss en_US

Files in this item

This item appears in the following Collection(s)

Show simple item record

Search K-REx

Advanced Search


My Account

Center for the

Advancement of Digital


118 Hale Library

Manhattan KS 66506

(785) 532-7444