隆林山羊与努比亚山羊杂交对后代生产性能和肉品质影响的研究

Study on the Effect of Hybridization of Longlin Goats and Nubia Goats on Growth Performance and Meat Quality of Offspring

为了促进广西隆林山羊杂交改良技术的应用,提高隆林山羊的生产效益,本研究以努比亚山羊、隆林山羊及努隆杂交F1代(努比亚山羊♂×隆林山羊♀)为研究对象,所有山羊都在相同水平下进行饲养管理,选取3个群体共205只山羊,分别对1、3、6月龄山羊的生产性能及体尺指标进行测定,选取6只6月龄的父母代及杂交F1代进行屠宰,取其背最长肌进行肉品质分析。结果表明,努隆杂交F1代经产母羊的产羔率、羔羊成活率与父母代差异不显著(P>0.05),初生重、不同月龄体尺指标与父母代差异极显著(P<0.01),努隆杂交F1代宰前活重、胴体重、净肉重、屠宰率、净肉率较隆林山羊都有显著提高(P<0.05),肌肉粗蛋白质含量、肌内脂肪含量、必需氨基酸、风味氨基酸、游离脂肪酸与父母代均有不同程度的提高。因此,努比亚山羊在改善隆林山羊体型、生长速度和肉品质上综合表现良好。

In order to promote the application of crossbreeding technology and improve the production efficiency of Longlin goats in Guangxi,this study focused on Nubia goats,Longlin goats and Nulong hybrid F1 generations(Nubia goats♂×Longlin goats♀),all the goats were raised and managed at the same level.Three groups of 205 goats were selected to measure the growth performance and body size of goats at 1,3 and 6 months old.6 parents and F1 hybrids of 6 months old goats were slaughtered and their longissimus dorsi muscles were taken for meat quality analysis.The results showed that there was no significant difference between the lamb rate and lamb survival rate of the F1 generation of Nulong hybrid and the parent generation(P>0.05).The birth weight,body size index of different month ages were extremely significantly different from that of the parent generation(P<0.01).The weight,weight of carcass,net meat weight,slaughter rate and net meat rate of Nulong hybrid F1 were significantly improved compared with Longlin goats(P<0.05).The muscle crude protein content,muscle fat content,essential amino acids,flavor amino acids,free fatty acids of Nulong hybrid F1 generation all had different degrees of improvement when compared to parents.Therefore,Nubia goats had good comprehensive performance in improving body shape,growth rate and meat quality of Longlin goats.