Correlation of blood and milk components with the milk yield response to bovine somatotropin in dairy cows

H...............H

Show simple item record

dc.contributor.author Rowlinson, P.
dc.contributor.author Weekes, T. E. C.
dc.contributor.author Rose, Michael T.
dc.date.accessioned 2009-09-07T14:25:35Z
dc.date.available 2009-09-07T14:25:35Z
dc.date.issued 2009-09-07
dc.identifier.citation Rowlinson , P , Weekes , T E C & Rose , M T 2009 , ' Correlation of blood and milk components with the milk yield response to bovine somatotropin in dairy cows ' Unknown Journal , pp. 296-307 . en
dc.identifier.other PURE: 126076
dc.identifier.other dspace: 2160/2942
dc.identifier.uri http://hdl.handle.net/2160/2942
dc.description Rose, M. T., Weekes, T. E. C., Rowlinson, P. (2005). Correlation of blood and milk components with the milk yield response to bovine somatotropin in dairy cows.  Domestic Animal Endocrinology, 28, (3), 296-307. en
dc.description.abstract Our aim was to correlate the individual variation in the milk yield response (MYR) of Holstein dairy cows to bovine somatotropin (bST), with changes in milk plasmin and plasminogen activities as well as with plasma hormone and metabolite levels. Thirty-two housed multiparous Holstein cows (90 ± 3.8 days post partum) received daily subcutaneous injections of saline for 1 week followed by subcutaneous injections of 20 mg/day of bST for 2 weeks. Blood samples were taken at approximately 4 h intervals over 24 h at the end of the saline and bST treatment periods. Milk samples were also taken at the end of the saline and bST treatment periods. The difference in milk yield between the saline and the second week of bST treatment (MYR) varied considerably between animals (from ¿0.2 to +8.6 kg/day, relative to the saline treatment week). Low milk yield before bST treatment was associated with a high MYR. The plasma growth hormone response to treatment was negatively correlated with MYR. Plasma insulin-like growth factor-1 response to treatment was positively correlated with MYR. Furthermore, a high MYR to bST was associated with a lower milk plasminogen level before treatment and a greater reduction in the level of plasminogen in milk following treatment. en
dc.format.extent 12 en
dc.language.iso eng
dc.relation.ispartof Unknown Journal en
dc.title Correlation of blood and milk components with the milk yield response to bovine somatotropin in dairy cows en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.contributor.institution Institute of Biological, Environmental and Rural Sciences en
dc.description.status Peer reviewed en


Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record

Search Cadair


Advanced Search

Browse

My Account