van Wyk Gertruida L, Hoffman Louwrens C, Strydom Phillip E, Frylinck Lorinda
Department of Animal Sciences, University of Stellenbosch, Private Bag X1, Matieland, Stellenbosch 7602, South Africa.
Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation (QAAFI), The University of Queensland, Coopers Plains, QLD 4108, Australia.
Animals (Basel). 2020 Oct 15;10(10):1884. doi: 10.3390/ani10101884.
Weaner male Boer Goats (BG; = 36; 21 bucks and 15 wethers) and large frame Indigenous Veld Goats (IVG; = 41; 21 bucks and 20 wethers) were raised on hay and natural grass ad libitum and the recommended amount of commercial pelleted diet to a live weight between 30 and 35 kg. Carcass quality characteristics (live weight, carcass weights, dressing %, chilling loss and eye muscle area) were measured. The right sides of the carcasses were divided into wholesale cuts and dissected into subcutaneous fat, meat and bone. Large frame Indigenous Veld Goat (IVG) wethers were slightly lighter than the IVG bucks with no significant difference observed between BG. Wethers compared to bucks had higher dressing %, subcutaneous fat % in all primal cuts, intramuscular fat %, kidney fat % and, overall, slightly less bone %. Some breed-wether interactions were noticed: IVG wethers were slightly lighter than the IVG bucks, but the IVG bucks tended to produce higher % meat compared to other test groups. Judged on the intramuscular fat % characteristics, it seems as if wethers should produce juicier and more flavorsome meat compared to bucks.
断奶期雄性波尔山羊（BG；n = 36；21只公羊和15只阉羊）和大体型本地草原山羊（IVG；n = 41；21只公羊和20只阉羊）以干草和天然草为自由采食饲料，并按推荐量投喂商业颗粒饲料，直至体重达到30至35千克。测量了胴体质量特征（活重、胴体重、屠宰率、冷缩损耗和眼肌面积）。将胴体的右侧分割成批发切块，并进一步解剖为皮下脂肪、肉和骨。大体型本地草原山羊（IVG）阉羊比IVG公羊略轻，BG之间未观察到显著差异。与公羊相比，阉羊的屠宰率、所有主要切块中的皮下脂肪百分比、肌内脂肪百分比、肾周脂肪百分比更高，总体而言，骨的百分比略低。注意到一些品种 - 阉羊的相互作用：IVG阉羊比IVG公羊略轻，但与其他测试组相比，IVG公羊的产肉率往往更高。从肌内脂肪百分比特征判断，阉羊似乎比公羊能产出更多汁、更美味的肉。
