Poster - #VH-70028 - Keywords: colostrum jersey dairy calves

Effect of Extended Colostrum Feeding on the Performance of Jersey Heifers

Jeff Semler[1], Niraj Suresh[2], Fabiana Cardoso[2], Sarah Potts[1], Emily Stamper[3]
[1] University of Maryland Extension, [2] Animal & Avian Sciences, University of Maryland, [3] Wilson College

ABSTRACT:
Research into extended colostrum feeding in Holstein calves has pointed towards beneficial effects in growth, and feed efficiency. However, there has been no research into its effect of feeding extended colostrum on Jersey calves. This experiment is being conducted to determine the short- and long-term effects of an extended colostrum feeding on Jersey calves and heifer performance. The data is being gathered on 1 commercial Jersey Farm in Maryland. The calves are separated into a control and treatment group with 60 calves per treatment (n=120). The control group is fed 2 feedings of colostrum while the treatment group is given 6 feedings of colostrum. Both groups receive 2 feedings of colostrum at 0-4 hours and 12 hours after birth. Afterwards, the control group is fed milk replacer powder at 12-hour intervals, while the treatment group receives 4 more feedings of colostrum at 12-hour intervals before being switched to milk replacer. After 7 days all calves are transferred to a group pen with a free choice automatic milk feeder where they remain until weaning (77 days). Calves are measured on body weight, heart girth, hip height, rectal temperature, and fecal scores. These measurements are recorded at birth and then every other week until weaning. Our preliminary results were determined with a smaller sample size (control n=34 and treatment n=31). Data were analyzed using mixed model analysis, with statistical significance set at P ≤ 0.05. Calves in the treatment group increased (P = 0.04) ADG compared with control (0.75 and 0.66 kg, respectively). Weaning weight increased (P = 0.03) for the treatment group compared with control (81 and 74kg, respectively). Weaning heart girth, and height did not differ among treatments. While the results are not statsitically significant, they do indicate a trend towards increased growth and feed efficiency for the treatment group. These findings can provide a baseline understanding for future research.