ISSN: 0041-3216 (Online), 0041-3216 (Print)
Volume 69 Number 2
Growth characteristics of Senepol bulls fed various energy levels over different time periods, under tropical conditions
An experiment to determine the effects of feeding regimens and feeding periods on the growth performance characteristics of 200 post-weaning Senepol bulls was conducted in two trials over two years on St Croix, US Virgin Islands. Trial 1 feeding regimens were (1) native pasture ad libitum, (2) 1 % body weight of a 14% protein feed (PF14) and pasture, and (3) 2% body weight PF14 and hay or silage in a feedlot situation. Trial 2 feeding regimens were (1) native pasture ad libitum, (2) 1 % body weight of com and pasture, (3) 1 % body weight PF14 and pasture, and (4) 1.5% body weight PF14 and pasture. Feeding periods were for 112, 140 and 168 days in Trial 1 and 140 and 168 days in Trial 2. Results indicate that an increase in energy in the diet increased average daily gain (ADG) and final weight. A longer time on feed increased ADG and final weight in Trial 1 and final weight in Trial 2. A test period of 140 days appears to be of sufficient length to evaluate ADG of Senepol bulls.
Keywords: Keywords: Senepol; Bulls; Feeding level; Feeding period; Growth rates