四川白鹅体重、肌肉、消化道生长曲线拟合和分析研究

发布时间：2018-03-30 22:22

本文选题：生长曲线　切入点：四川白鹅　出处：《中国畜牧杂志》2017年01期

【摘要】：为了解四川白鹅体重、肌肉和消化道的生长规律,本研究运用Logistic、Gompertz和Bertalanffy3种非线性模型分别对0~70日龄四川白鹅体重、胸肌、腿肌、胃和肠道进行了生长曲线的拟合和分析。结果表明:Gompertz模型对四川白鹅体重的拟合效果最佳,拟合度为0.9992,成年体重为3 435.1 g,拐点体重为1 263.66 g,拐点日龄为27.51日龄,最大日增重达59.4 g。Logistic模型对四川白鹅胸肌生长的拟合效果最好,拟合度为0.990 5,拐点重量为134.1g,极限重量为268.2 g,拐点日龄为58.99日龄,最大日增重为6.23 g;Gompertz模型对四川白鹅腿肌、胃和肠道生长的拟合效果最佳,拟合度分别为0.9865、0.9941、0.9878,拐点重量分别为187.36、45.58、35.32 g,极限重量分别是509.3、123.9、96.02 g,拐点日龄分别是30、20.07、14.07日龄,最大日增重分别达8.54、1.87、2.38 g。本研究结果可为了解四川白鹅体重、肌肉和消化道的生长发育规律提供参考,并为其饲养管理方案的制定提供理论指导。
[Abstract]:In order to understand the growth pattern of body weight, muscle and digestive tract of Sichuan White Goose, the body weight, pectoralis muscle and leg muscle of Sichuan White Goose at the age of 70 days were studied by using Logistic Gompertz and Bertalanffy3 nonlinear model, respectively. The growth curves of stomach and intestine were fitted and analyzed. The results showed that the fitting effect of the Gompertz model on the body weight of Sichuan White Goose was the best, the fitting degree was 0.9992, the adult body weight was 3 435.1 g, the inflection point weight was 1 263.66 g, and the inflexion point was 27.51 days old. The maximum daily gain (ADG) of 59.4 g.Logistic model was the best to fit the growth of pectoralis muscle of Sichuan white geese. The fitting degree was 0.990 5, the inflexion weight was 134.1 g, the limit weight was 268.2 g, the inflexion point was 58.99 days old, and the maximum daily gain was 6.23 g / g Gompertz model. The fitting effect of stomach and intestine growth was the best, the fitting degree was 0.9865 / 0.9941 / 0.9878, the inflexion weight was 187.36 / 45.585 / 35.32 g, the limit weight was 509.3123.9 / 96.02 / g, the inflexion point was 30 ~ 20.014.07 / d and the maximum daily gain was 8.541.87/ 2.38 / g respectively. The rules of growth and development of muscle and digestive tract provide reference and provide theoretical guidance for the formulation of feeding and management plan.
【作者单位】：西南大学荣昌校区;重庆市畜牧科学院;
【基金】：国家水禽产业技术体系资金(CARS-43) 国家公益性行业(农业)科研专项(201303143) 重庆市农业发展资金(15402)
【分类号】：S835

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