Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 3 of 3
Full-Text Articles in Life Sciences
Impacts Of Small Intestinal Enzyme Activity And Varying Corn Grain Processing Types On Feeding Behavior, And Growth Performance Of Finishing Beef Steers, Wyatt Smith
Electronic Theses and Dissertations
The objective of this study was to quantify the differences in activity of jejunal maltase and isomaltase between 2 groups of steers with average dry matter intake (DMI) and differing average daily gain (ADG). Dry matter intake and ADG were measured in crossbred steers (n = 69). Jejunal mucosal samples were collected from 8 steers with the greatest (high) or least (low) ADG and average DMI (± 0.55 standard deviation). Homogenates of jejunal mucosa were incubated with increasing amounts of maltose and isomaltose to determine the disaccharidase kinetics. Neither the Km of isomaltase (P = 0.15) or maltase (P = …
Anabolic Hormone Exposure During Various Stages Of Growth: Effects On Post-Weaning Performance, Frame Size, And Carcass Characteristics Of Calf-Fed Steers, Wesley W. Gentry
Anabolic Hormone Exposure During Various Stages Of Growth: Effects On Post-Weaning Performance, Frame Size, And Carcass Characteristics Of Calf-Fed Steers, Wesley W. Gentry
Electronic Theses and Dissertations
The growth promoting activity of implants have been documented. However, stage of growth in which the implant is administered may alter growth performance and carcass traits. An experiment was conducted to examine the effects of administering a conventional implant (Synovex C; SYN-C), or an extended-release combination implant (Synovex One Grass; ONE-G) to suckling steer calves on weaning weight, post-weaning growth performance, and carcass characteristics. Suckling steer calves were either not implanted (NONE) or were implanted with SYN-C or ONE-G. Steer calves were predominantly 30 to 60 d of age when implants were administered. Steers were weaned 176 d post-suckling implant …
Effects Of Enzymatically Hydrolyzed Yeast Supplementation And Supplementation Frequency On Immune Parameters, Performance, And Digestibility Among Periparturient Beef Cows And Calves, Janine Swartz
Electronic Theses and Dissertations
Effects of enzymatically hydrolyzed yeast (EHY) and supplementation frequency (FREQ) on immune parameters among beef cows and calves was evaluated. Eighty multiparous (parity = 4.2 ± 0.3) cows were fed a common brome hay-based diet (CP = 8.0 ± 0.17%). Cows were blocked by expected calving date and stratified by body condition score (BCS) before random assignment of treatment. Beginning 88 ± 5 d prior to parturition, cows were provided 1 kg daily or 3 kg every 3 d of a soybean hull-based supplement (CP = 34.0, % of DM) that contained 0 or 3 g/kg EHY. The daily supplement …