Show simple item record

EFFECTS OF MILK UREA NITROGEN AND OTHER FACTORS ON PROBABILITY OF CONCEPTION OF DAIRY COWS

dc.contributor.advisorKohn, Richard Aen_US
dc.contributor.advisorErdman, Richard Aen_US
dc.contributor.advisorDouglass, Larryen_US
dc.contributor.advisorVarner, Mark Aen_US
dc.contributor.authorGuo, Kejunen_US
dc.date.accessioned2004-05-31T20:14:55Z
dc.date.available2004-05-31T20:14:55Z
dc.date.issued2004-04-01en_US
dc.identifier.urihttp://hdl.handle.net/1903/219
dc.description.abstractThe objective of the present study was to evaluate the relationships among milk urea nitrogen (MUN) and other factors with the probability of conception in dairy cows. A total of 713 dairy herds and 10,271 dairy cows were included in the study. Logistic regression was used to determine the effects of MUN, milk production, lactation number, and breeding season on the probability of conception for each of three services. Within herds, MUN displayed a slight negative association with probability of conception at first service. In among-herd regression analysis, there was no effect of MUN on probability of conception. These results suggest that MUN may be related to conditions affecting reproduction of individual cows within a herd. Diet formulation usually would affect MUN equally among all cows at a similar stage of lactation in a herd. Since there was no effect of MUN among herds, diet formulation to meet the protein requirements did not appear to affect conception rate.en_US
dc.format.extent1489113 bytes
dc.format.extent1489113 bytes
dc.format.mimetypeapplication/pdf
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.titleEFFECTS OF MILK UREA NITROGEN AND OTHER FACTORS ON PROBABILITY OF CONCEPTION OF DAIRY COWSen_US
dc.typeThesisen_US
dc.relation.isAvailableAtDigital Repository at the University of Marylanden_US
dc.relation.isAvailableAtUniversity of Maryland (College Park, Md.)en_US
dc.contributor.departmentAnimal Sciencesen_US
dc.subject.pqcontrolledAgriculture, Animal Culture and Nutritionen_US


Files in this item

Thumbnail
Thumbnail

This item appears in the following Collection(s)

Show simple item record