湘白鹅生长发育规律及产肉性能的研究

发布时间：2018-11-14 16:12

【摘要】：试验旨在研究湘白鹅的生长发育规律及产肉性能。选用雌、雄湘白鹅各50只,分别在0~12周龄称重,利用Logistic曲线方程对雌、雄湘白鹅各周龄的体重变化进行拟合;12周龄时随机挑选雌、雄湘白鹅各8只屠宰,测定体尺指标及产肉性能。结果表明:1湘白鹅1~6周出现体重增长高峰,7~12周相对稳定;4周龄后,雄鹅体重显著(P0.05)或极显著(P0.01)高于雌鹅;雌、雄鹅Logistic生长曲线模型的拟合度均高达0.988以上,雌鹅生长曲线拐点为5周龄,雄鹅为5.2周龄;雌、雄鹅4周龄体重与12周龄体重的相关系数分别为0.512、0.561(P0.01)。212周龄雄鹅的体斜长、龙骨长、胫长和半潜水长均高于雌鹅,差异显著(P0.05)。312周龄雄鹅活重显著大于雌鹅(P0.05)。4湘白鹅屠宰率、全净膛率、胸肌率和腿肌率分别为88.25%、67.93%、13.03%和13.76%。综合以上结果,湘白鹅生长较快,产肉性能良好,雌、雄鹅生长发育、体尺指标及产肉性能之间存在一定差异,雄鹅优于雌鹅。
[Abstract]:The purpose of the experiment was to study the growth and development law and meat production performance of Xiang White Goose. 50 female and 50 male Xiang white geese were selected to weigh at the age of 0 ~ 12 weeks respectively. The weight changes of female and male Xiang white geese were fitted by Logistic curve equation. At the age of 12 weeks, 8 female and 8 male Xiang white geese were slaughtered at random, and the body size and meat yield were measured. The results showed that: (1) the body weight of Xiang White Goose reached a peak at 6 weeks, and was relatively stable at 712 weeks, and the weight of male geese was significantly higher than that of female geese after 4 weeks of age (P0.05) or extremely significant (P0.01). The fitting degree of Logistic growth curve model of female and male geese was above 0.988. The inflection point of growth curve of female geese and male goose was 5 weeks old and 5.2 weeks old respectively. The correlation coefficient between the body weight of female and male geese at 4 weeks old and the body weight at 12 weeks old was 0.512 ~ 0. 561 (P0.01). The body length, keel length, shank length and half diving length of 212 week old male geese were higher than those of female geese. The difference was significant (P0.05). The living weight of 312 week old male geese was significantly higher than that of female geese (P0.05). 4 the slaughtering rate, the full bore rate, the pectoral muscle rate and the leg muscle rate were 88.25% and 13.76%, respectively. Based on the above results, the male goose was superior to the female goose, and the male goose was superior to the female goose in the growth and development, the body size index and the meat yield performance of the male goose was better than that of the female goose, and the growth rate of the male goose was better than that of the female goose.
【作者单位】：湖南农业大学动物科学技术学院湖南畜禽安全生产协同创新中心;湖南省天鹅湖生态农业科技发展有限责任公司;
【基金】：湖南农业大学产学研合作项目(11110、13098)
【分类号】：S835

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