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Full-Text Articles in Life Sciences
Dietary Influences On Pancreatic Amylase And Small Intestinal Disaccharidase Activities In Cattle, K.K. Kreikemeier, D.L. Harmon, K. Gross, C. Armendariz
Dietary Influences On Pancreatic Amylase And Small Intestinal Disaccharidase Activities In Cattle, K.K. Kreikemeier, D.L. Harmon, K. Gross, C. Armendariz
Kansas Agricultural Experiment Station Research Reports
Pancreatic α-amylase activity was 54% higher in cattle fed at twice maintenance energy than in cattle fed at maintenance and was 52% greater in hay-fed than grain-fed cattle. Increased pancreatic α-amylase activity probably represents increased secretion as well. α-amylase activity in small intestinal digesta was greater with increased energy intake and with hay feeding. Small intestine mucosal disaccharidase activities in cattle were unaffected by diet. Lactase activity was highest in the proximal segment of the small intestine and low in both mid and distal segments. Maltase and isomaltase activities were low in the duodenum, but increased toward the jejunum and …
Impact Of Cash Settlement On Feeder Cattle Hedging Risk, J.R. Mintert, Ted C. Schroeder
Impact Of Cash Settlement On Feeder Cattle Hedging Risk, J.R. Mintert, Ted C. Schroeder
Kansas Agricultural Experiment Station Research Reports
One of the principal motivations for the introduction of cash settlement in feeder cattle futures contracts was to reduce basis risk. This study examined expected changes in hedging risk attributable to the adoption of cash settlement. The estimates of cash settlement futures hedging risks were generally small than estimates of hedging risks using the physical-delivery futures. The reduction in hedging risk was greatest for feeder steers meeting futures contract weight specifications, but reductions were also common for other weight classes and for heifers.
Performance, Carcass, And Meat Palatability Traits Of Open And 30-Month Old Heifers That Produced One Calf, A.W. Waggoner, J.R. Brethour, Michael E. Dikeman
Performance, Carcass, And Meat Palatability Traits Of Open And 30-Month Old Heifers That Produced One Calf, A.W. Waggoner, J.R. Brethour, Michael E. Dikeman
Kansas Agricultural Experiment Station Research Reports
Eighty-seven 3/8 Simmental x 5/8 Hereford heifers calved at 2 years of age and were designated as Single-Calf-Heifers (SCH). Twenty-six heifer mates that did not calve were designated as 2-year-old open heifers (2-OH), and 22, 1 year-old open heifers (1-OH) from the same source served as controls. All heifer groups were fed a high-grain diet for 112 to 137 days before slaughter. The SCH were started on feed about 1 month after calving, and their calves were weaned early about 5 weeks prior to slaughter. Thirty-three of the SCH were implanted with Synovex-H® after calving. Carcass data were obtained, and …
Fecal Thiaminase In Feedlot Cattle, T.D. Hays, B.E. Brent
Fecal Thiaminase In Feedlot Cattle, T.D. Hays, B.E. Brent
Kansas Agricultural Experiment Station Research Reports
Fecal thiaminase was measured on 152 feedlot cattle at three locations and on a variety of rations. No animals showed signs of polioencephalomalacia. Thiaminase activities ranged from 0.6 to 430 µmol thiamin destroyed per minute per liter of feces (µmol/min/l). Eighty-two percent of the thiaminase activities were below 20 µmol/min/l, and only 3 percent were less than 2 µmol/min/l. High levels of fecal thiaminase were apparently not related to ration. Thiaminase was detected in all animals studied, but one location had only minimal levels. When high levels of thiaminase were found, the samples were re-assayedt and the enzyme was confirmed …
Managing Fast- Vs. Slow-Growth Genotypes To Optimize Quality And Yield Grades, R.R. Schalles, K.O. Zoellner, Michael E. Dikeman
Managing Fast- Vs. Slow-Growth Genotypes To Optimize Quality And Yield Grades, R.R. Schalles, K.O. Zoellner, Michael E. Dikeman
Kansas Agricultural Experiment Station Research Reports
Fast-growth genotype steers placed on a high energy ration a month after weaning were compared to a slow-growth genotype on a growing ration for 155 days, followed by a finishing ration for 62 days. The fast-growth genotype produced heavier, higher quality carcasses in less time than the slow-growth genotype, with similar energy conversion. Using contemporary prices. the fast-growth genotype cattle broke even, and the slow-growth genotype lost $124 per head.