Effect of molybdenum/sulfur-induced copper deficiency upon enzyme levels and reproduction in heifers
dc.citation.epage | 98 | en_US |
dc.citation.spage | 97 | en_US |
dc.contributor.author | Arthington, J.D. | |
dc.contributor.author | Corah, L.R. | |
dc.date.accessioned | 2010-10-05T19:08:32Z | |
dc.date.available | 2010-10-05T19:08:32Z | |
dc.date.issued | 2010-10-05T19:08:32Z | |
dc.date.published | 1993 | en_US |
dc.description.abstract | To evaluate the effects of molybdenum (Mo)- and sulfur (S)- induced copper (Cu) deficiency, 99 prepubertal heifers were allotted into two groups. Treated heifers (n = 72) were fed a grass hay naturally high in Mo (Mo = 8 ppm and Cu = 3.2 ppm). Sulfur was supplemented to achieve a dietary level of .3%. Control heifers (n = 27) received a grass hay with normal levels of Mo (Mo = .47 ppm and Cu = 1.5 ppm). Copper was supplemented to achieve a dietary level of 8 ppm. Diets were fed for a period of 163 d. Liver samples were collected and analyzed for total Cu. Copper-containing enzyme activity (ceruloplasmin and Cu,Zn-superoxide dismutase [Cu,Zn-SOD]), and progesterone were measured in blood serum. Heifers in the treated group had lower concentrations of liver Cu and decreased ceruloplasmin activity, with no differences noted in Cu,Zn-SOD activity or onset of puberty. No difference was detected in first-service conception rate following artificial insemination (AI). Overall AI pregnancy rate tended to be higher for control heifers. | en_US |
dc.description.conference | Cattlemen's Day, 1993, Kansas State University, Manhattan, KS, March 5, 1993 | en_US |
dc.identifier.uri | http://hdl.handle.net/2097/6276 | |
dc.publisher | Kansas State University. Agricultural Experiment Station and Cooperative Extension Service | en_US |
dc.relation.isPartOf | Cattlemen’s Day, 1993 | en_US |
dc.relation.isPartOf | Kansas Agricultural Experiment Station contribution; no. 93-318-S | en_US |
dc.relation.isPartOf | Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 678 | en_US |
dc.subject | Beef | en_US |
dc.subject | Heifers | en_US |
dc.subject | Copper | en_US |
dc.subject | Ceruloplasmin | en_US |
dc.subject | Cu,Zn-SOD | en_US |
dc.subject | Reproduction | en_US |
dc.title | Effect of molybdenum/sulfur-induced copper deficiency upon enzyme levels and reproduction in heifers | en_US |
dc.type | Conference paper | en_US |