dc.contributor.author |
Arthington, J.D. |
|
dc.contributor.author |
Larson, Robert L. |
|
dc.contributor.author |
Corah, L.R. |
|
dc.date.accessioned |
2010-10-14T17:55:22Z |
|
dc.date.available |
2010-10-14T17:55:22Z |
|
dc.date.issued |
2010-10-14T17:55:22Z |
|
dc.identifier.uri |
http://hdl.handle.net/2097/6322 |
|
dc.description.abstract |
Two Kansas cow/calf herds known to be
copper deficient were utilized to examine the
effect of slow-release copper boluses. In herd
I, 34 spring-calving cows and calves were
divided into a treated and control group at 3-4
months following calving. In herd II, 1106
fall-calving cows and 172 calves were divided
into a treated and control group at 3-4 months
following calving. In both herds, cow liver
and serum samples were collected and assayed
for copper and iron. Cows in herd II were
also examined for various reproductive parameters.
Calf ADG was monitored over a 42-day
treatment period in herd I, and a comparison
of calf weaning weights was made in herd II.
We concluded that copper boluses elevated
liver copper levels. However, no effect on
reproductive performance was noted, and calf
performance was adversely affected. |
en_US |
dc.publisher |
Kansas State University. Agricultural Experiment Station and Cooperative Extension Service |
en_US |
dc.relation.isPartOf |
Cattlemen’s Day, 1992 |
en_US |
dc.relation.isPartOf |
Kansas Agricultural Experiment Station contribution; no. 92-407-S |
en_US |
dc.relation.isPartOf |
Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 651 |
en_US |
dc.subject |
Beef |
en_US |
dc.subject |
Copper |
en_US |
dc.subject |
Iron |
en_US |
dc.subject |
Weight gain |
en_US |
dc.subject |
Reproduction |
en_US |
dc.title |
The effects of slow-release copper boluses on
cow reproductive performance and calf growth |
en_US |
dc.type |
Conference paper |
en_US |
dc.date.published |
1992 |
en_US |
dc.citation.epage |
21 |
en_US |
dc.citation.spage |
19 |
en_US |
dc.description.conference |
Cattlemen's Day, 1992, Kansas State University, Manhattan, KS, March 6, 1992 |
en_US |