Needham Tersia, Musa Abubakar Sadiq, Kotrba Radim, Ceacero Francisco, Hoffman Louwrens Christiaan, Lebedová Nicole, Bureš Daniel
Department of Animal Science and Food Processing, Faculty of Tropical AgriSciences, Czech University of Life Sciences Prague, Kamýcká 129, 165 00 Prague, Czech Republic.
Department of Ethology, Institute of Animal Science, Přátelství 815, 104 00 Prague, Czech Republic.
Animals (Basel). 2022 Oct 22;12(21):2893. doi: 10.3390/ani12212893.
This study investigated the effects of immunocastration and slaughter age on the carcass yield performance of intensively farmed common eland males. Eighteen male eland (five immunocastrated juveniles, three intact juveniles, five immunocastrated sub-adults, and five intact sub-adults) were finished for four months, after which their carcass, offal, primal cut, and individual muscle yields were determined. Juveniles were ~6 months of age at the start of the experiment, while sub-adults were ~1.5 years old. Primal cuts were dissected to determine the percentage yields of meat, bones (with tendons), separable fat, and trimmings. Immunocastration had no effect on offal or carcass yields. While sub-adults had increased individual muscle yields, juveniles had greater proportionate yields of primal cuts and a greater total high-value: low-value meat ratio. Whilst slaughtering younger male eland could provide additional economic advantages, this should be considered being against changing marketing trends.
本研究调查了免疫去势和屠宰年龄对集约化养殖的普通大羚羊雄性胴体产量性能的影响。18只雄性大羚羊(5只免疫去势的幼年个体、3只未去势的幼年个体、5只免疫去势的亚成年个体和5只未去势的亚成年个体)育肥4个月,之后测定它们的胴体、内脏、主要切块和个体肌肉产量。实验开始时,幼年个体约6个月大,亚成年个体约1.5岁。解剖主要切块以确定肉、骨(带肌腱)、可分离脂肪和修整部分的产量百分比。免疫去势对内脏或胴体产量没有影响。虽然亚成年个体的个体肌肉产量有所增加,但幼年个体的主要切块产量比例更高,且高价值肉与低价值肉的总比例更大。虽然屠宰较年轻的雄性大羚羊可能会带来额外的经济优势,但这应被视为与不断变化的市场趋势相悖。