title: Effect of energy source and escape protein on receiving and finishing performance and health of calves.
abstract: Two receiving and two finishing trials evaluated energy source and escape protein supplementation for calves. In receiving Trial 1, 398 calves (257 +/- 24 kg BW) were used in a 2 x 2 factorial arrangement of treatments. Energy sources were dry-rolled corn (DRC) and wet corn gluten feed (WCGF); each was fed without or with supplemental escape protein (EP). Calves fed WCGF gained slower (P < .05) and consumed less DM (P < .01) than calves fed DRC. Feed efficiency improved (P < .10) with EP supplementation. In finishing Trial 1, 240 calves (305 +/- 21 kg BW) were used. The arrangement of treatments was the same as in receiving Trial 1. Calves fed DRC/WCGF tended (P = .15) to be more efficient and consumed less DM (P < .05) than calves fed DRC. In receiving Trial 2, 315 calves (252 +/- 23 kg BW) were fed diets similar to those fed in receiving Trial 1. Calves fed WCGF consumed less DM (P < .01), gained similarly (P > .15), and were more efficient (P < .10) than calves fed DRC. In finishing Trial 2, 320 calves (298 +/- 23 kg BW) were fed diets containing DRC, DRC/WCGF, high-moisture corn (HMC), HMC/WCGF, and DRC/HMC; each was fed without or with supplemental EP. An energy source x protein supplement interaction was detected for gain (P < .05) and efficiency (P < .01). Results suggest that WCGF has a NEg greater than DRC in receiving diets and a NEg similar to that of DRC but lower than that of HMC in finishing diets.
authors.affiliation: Department of Animal Science, University of Nebraska, Lincoln 68583-0908, USA.
authors.forename: R A
authors.initials: RA
authors.lastname: McCoy
authors.forename: R A
authors.initials: RA
authors.lastname: Stock
authors.forename: T J
authors.initials: TJ
authors.lastname: Klopfenstein
authors.forename: D H
authors.initials: DH
authors.lastname: Shain
authors.forename: M J
authors.initials: MJ
authors.lastname: Klemesrud
mesh_terms: D000821:Animal Feed / Q000592:standards*; D000818:Animals; D002417:Cattle / Q000502:physiology*; D002418:Cattle Diseases / Q000453:epidemiology* / Q000517:prevention & control; D004044:Dietary Proteins / Q000008:administration & dosage*; D004063:Digestion; D004435:Eating; D002149:Energy Intake / Q000502:physiology*; D005983:Glutens / Q000008:administration & dosage; D006304:Health Status; D008297:Male; D008460:Meat / Q000592:standards; D009017:Morbidity; D011897:Random Allocation; D012417:Rumen / Q000502:physiology; D015430:Weight Gain; D003313:Zea mays
chemical_list: D004044:Dietary Proteins; D005983:Glutens