珍珠鸡体质量、体尺性状发育规律曲线拟合分析

发布时间：2018-04-26 02:40

本文选题：珍珠鸡 + 生长发育规律　；参考：《华南农业大学学报》2017年02期

【摘要】：【目的】为系统选育和改良珍珠鸡Guinea fowl生产性能提供基本数据资料。【方法】以1~9周龄珍珠鸡为研究对象,分析其生长发育规律,并采用Logistic、Gompertz、Bertalanffy 3种模型进行拟合分析,探讨其合适的生长模型。【结果】公、母珍珠鸡的体质量、龙骨长、胫长和胫围差异不显著(P0.05),生长发育规律呈现一致趋势。体尺性状在2周龄生长速率最大,呈直线上升趋势。珍珠鸡体质量与体尺性状间均呈正相关,公珍珠鸡的胫长与体质量的相关系数最大(r=0.752),且达到极显著水平。母珍珠鸡的体质量与龙骨长的相关系数最大(r=0.600),其次为胫长(r=0.509),且胫长与龙骨长之间相关性达到显著水平,相关系数为0.477。3种曲线模型均适合珍珠鸡生长曲线的模拟,其中Gompertz模型是珍珠鸡体质量的最佳拟合模型,龙骨长、胫长和胫围的最佳拟合模型均为Bertalanffy模型。【结论】公、母珍珠鸡体质量和体尺生长发育规律趋势一致,Gompertz、Bertalanffy模型分别是体质量和体尺性状的最佳拟合模型,应加强对胫长指标的选育,有可能间接提高珍珠鸡龙骨长度和胸肌产量,并提高体质量。
[Abstract]:[objective] to provide basic data for systematic selection and improvement of Guinea fowl production performance. [methods] the growth and development patterns of 1- and 9-week-old guinea fowl were analyzed, and three models of logistic Gompertztzia Bertalanffy were used to fit the data. [results] the body weight, length of keel, tibial length and tibial circumference of male and female guinea fowl were not significantly different (P0.05), and the growth and development law showed the same trend. The growth rate of body size was the highest at 2 weeks of age and showed a linear upward trend. The correlation coefficient between shank length and body weight was the largest, and reached a very significant level. The correlation coefficient between the body weight and the keel length of the mother guinea fowl was the highest 0.600, followed by the tibial length 0.509, and the correlation between the tibial length and the keel length reached a significant level, and the correlation coefficient was 0.477.3 curve models, all of which were suitable for the simulation of the growth curve of the guinea fowl. The Gompertz model is the best fit model for the body mass of the guinea fowl, and the best fitting model for the length of the keel, the shank length and the shank circumference is the Bertalanffy model. [conclusion] The Gompertztzia Bertalanffy model is the best fit model for body weight and body size traits respectively. The breeding of tibial length should be strengthened, which may indirectly increase the length of the keel and the yield of pectoralis muscle. And improve the body mass.
【作者单位】：广东海洋大学农学院;
【分类号】：S833

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