The effects of slow-release copper boluses on cow reproductive performance and calf growth

dc.citation.epage21en_US
dc.citation.spage19en_US
dc.contributor.authorArthington, J.D.
dc.contributor.authorLarson, Robert L.
dc.contributor.authorCorah, L.R.
dc.date.accessioned2010-10-14T17:55:22Z
dc.date.available2010-10-14T17:55:22Z
dc.date.issued2010-10-14T17:55:22Z
dc.date.published1992en_US
dc.description.abstractTwo 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.description.conferenceCattlemen's Day, 1992, Kansas State University, Manhattan, KS, March 6, 1992en_US
dc.identifier.urihttp://hdl.handle.net/2097/6322
dc.publisherKansas State University. Agricultural Experiment Station and Cooperative Extension Serviceen_US
dc.relation.isPartOfCattlemen’s Day, 1992en_US
dc.relation.isPartOfKansas Agricultural Experiment Station contribution; no. 92-407-Sen_US
dc.relation.isPartOfReport of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 651en_US
dc.subjectBeefen_US
dc.subjectCopperen_US
dc.subjectIronen_US
dc.subjectWeight gainen_US
dc.subjectReproductionen_US
dc.titleThe effects of slow-release copper boluses on cow reproductive performance and calf growthen_US
dc.typeConference paperen_US

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