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Title: PRE- AND POST-WEANING GROWTH PERFORMANCE OF BOER- AND KIKO-SIRED CROSSBRED GOAT KIDS

Author
item WILDEUS, S - VIRGINIA STATE UNIV
item Turner, Kenneth
item COLLINS, J - VIRGINIA STATE UNIV

Submitted to: American Society of Animal Science Southern Section Meeting
Publication Type: Abstract Only
Publication Acceptance Date: 10/15/2001
Publication Date: 2/1/2002
Citation: WILDEUS, S., TURNER, K.E., COLLINS, J.R. PRE- AND POST-WEANING GROWTH PERFORMANCE OF BOER- AND KIKO-SIRED CROSSBRED GOAT KIDS. AMERICAN SOCIETY OF ANIMAL SCIENCE SOUTHERN SECTION MEETING. 2002.

Interpretive Summary:

Technical Abstract: This experiment evaluated growth in kids sired by either Boer (B) or Kiko (K) bucks (n=8) mated to Spanish (S) and Myotonic (M) does (n=83). At 4 mo of age 32 male kids, equally representing the four breed combinations, were assigned to a 120-d post-weaning feeding trial after half the males were surgically castrated. Males were allocated to 8 pens by sex class (intact vs. castrate), stratified by breed type, and fed a diet of moderate qualit grass hay (10.6% CP, 46.9% IVOMD, 68.4% NDF, 38.0% ADF) ad lib and a corn/cottonseed supplement (15.5% CP, 73.3% IVOMD, 25.3% NDF, 15.5% ADF) at 2% of BW. Body weight was recorded at birth, weaning, and throughout the feeding trial. Pre-prandial blood samples were collected. Pre-weaning data were analyzed using sire and dam breed, sex, and birth type as the main effects. Feeding trial data were analyzed using date, breed, sex class, and pen (rep). Birth weight was affected (P <.01) by dam breed (M: 2.68 kg vs. S: 3.02 kg), but not sire breed. However, pre-weaning ADG and weaning weight were not affected (P > .10) by either dam or sire breed. Feeding trial data was partitioned into two periods, prior to (d 1-50) and after (d 51-120) control of gastrointestinal parasitism. In period 1, ADG (61 g/d) was not affected by breed or sex class; in period 2, ADG was higher (P <.01) in intact (91 g/d) than castrated males (71 g/d), but not affected by breed. Blood urea nitrogen (mg/dl) was higher (P<.01) in B- sired (20) than K-sired (18) kids. Blood creatinine (mg/dl) was higher (P<.001) in B-sired (0.6) than K-sired (0.52) animals, while blood glucose (mg/dl) was higher (P<.001) in animals from S (63.6) than M does (60.9). Sire and dam breed influenced nutrient use and blood parameters during finishing on a moderate plane of nutrition.