机构地区:[1]贵州省畜牧兽医研究所,贵阳550001 [2]贵州大学,高原山地动物遗传育种与繁殖教育部重点实验室,贵阳550025
出 处:《中国畜牧兽医》2025年第4期1694-1704,共11页China Animal Husbandry & Veterinary Medicine
基 金:贵州省科技计划项目(黔科合支撑[2022]重点033);国家重点研发计划(课题8)(2021YFD1100308);贵州省农科院畜禽种质资源创新利用与基础性科技平台建设项目(黔农科种质资源[2023]04号)。
摘 要:【目的】试验旨在比较努贵杂交F1代羊(努比亚山羊♂×贵州黑山羊♀)与纯繁贵州黑山羊的屠宰性能及肉品质,探究使用努比亚山羊与贵州黑山羊杂交对贵州黑山羊生产性能的改良效果。【方法】选取同期出生的努贵杂交F1代羊和贵州黑山羊公羔羊各30只,记录其初生重,保持同一饲养环境下饲养,测量3、6、9和12月龄的体重及体尺指标。随机选取14月龄努贵杂交F1代羊与贵州黑山羊各7只进行屠宰,测定屠宰性能,同时采集背最长肌组织,测定肉质性状并检测肌肉中氨基酸和脂肪酸的含量。【结果】(1)努贵杂交F1代羊3、6、9和12月龄体重均显著高于贵州黑山羊(P<0.05),且各体尺性状在12月龄时均显著高于贵州黑山羊(P<0.05);(2)努贵杂交F1代羊屠宰率、净肉率、胴体净肉率和眼肌面积均显著高于贵州黑山羊(P<0.05);(3)努贵杂交F1代羊肌肉剪切力和滴水损失均显著低于贵州黑山羊(P<0.05),熟肉率显著高于贵州黑山羊(P<0.05);(4)努贵杂交F1代羊与贵州黑山羊背最长肌组织中均检测出17种氨基酸和37种脂肪酸,其中赖氨酸、谷氨酸、天冬氨酸以及油酸、亚油酸、γ-亚麻酸和花生四烯酸含量均显著高于贵州黑山羊(P<0.05),精氨酸、棕榈酸和硬脂酸含量均显著低于贵州黑山羊(P<0.05),饱和脂肪酸含量无显著差异(P>0.05),单不饱和脂肪酸和多不饱和脂肪酸含量均显著高于贵州黑山羊(P<0.05)。【结论】努比亚山羊与贵州黑山羊杂交可以显著提高F1代羊的生长速度和产肉性能,并改善了肉品质。【Objective】The aim of this study was to compare the slaughter performance and meat quality of Nu-Gui hybrid F1 generation goats(Nubian goats♂×Guizhou Black goats♀)with purebred Guizhou Black goats,and explore the improvement effect of crossbreeding Nubian and Guizhou Black goats on the production performance of Guizhou Black goats.【Method】Thirty male lambs of Nu-Gui hybrid F1 generation and Guizhou Black goats born in the same period were selected,respectively,the birth weight was recorded,and the body weight and body size were measured at 3,6,9,and 12 months of age.Seven Nu-Gui hybrid F1 generation and Guizhou Black goats at 14 months of age were randomly selected for slaughter,respectively,the slaughter performance was determined.Meanwhile,the meat quality traits and the contents of amino acids and fatty acids in longissimus dorsi muscle were determined.【Result】①The body weight of Nu-Gui hybrid F1 generation goats at 3,6,9,and 12 months of age were significantly higher than those of Guizhou Black goats(P<0.05),and all body size traits at 12 months of age were significantly higher than those of Guizhou Black goats(P<0.05).②The slaughter rate,pure meat percentage,carcass net meat rate and eye muscle area of Nu-Gui hybrid F1 generation goats were significantly higher than those of Guizhou Black goats(P<0.05).③The muscle shear force and dripping loss of Nu-Gui hybrid F1 generation goats were significantly lower than those of Guizhou Black goats(P<0.05),and the cooked meat percentage was significantly higher than that of Guizhou Black goats(P<0.05).④17 kinds of amino acids and 37 kinds of fatty acids were detected in longissimus dorsi muscle of Nu-Gui hybrid F1 generation goats,the contents of lysine,glutamic acid,aspartate,oleic acid,linoleic acid,gamma linolenic acid,and arachidonic acid were significantly higher than those of Guizhou Black goats(P<0.05),while the contents of arginine,palmitic acid,and stearic acid were significantly lower than those of Guizhou Black goats(P<0.05).There wa
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