论文部分内容阅读
为了研究贵州小型猪生长发育规律,指导贵州小型猪的生产和管理,试验测定了0~8月龄不同性别贵州小型猪的体重,并运用Gompertz、Logistic、Von Bertalanffy三种生长模型拟合其生长曲线。结果表明:三种模型均能较好地拟合贵州小型猪体重的生长曲线,复相关指数(R~2)均高于0.99,结合残差平方和(E)和卡方(χ~2)适合性检验,Von Bertalanffy模型拟合精度更高,公、母猪的拟合方程分别为y=32.149(1-0.718e~(-0.161t))~3和y=42.568(1-0.736e~(-0.144t))~3。与母猪相比,公猪有较低的初始体重、极限体重、月增重和拐点体重。公猪拐点月龄为4.77月,母猪的拐点月龄为5.39月。
In order to study the growth and development of Guizhou miniature pigs and to guide the production and management of Guizhou miniature pigs, the body weights of Guizhou miniature piglets from 0 to 8 months old were measured. The growth of Guizhou miniature pigs was fitted by Gompertz, Logistic and Von Bertalanffy models curve. The results showed that all the three models could well fit the growth curve of body weight of Guizhou miniature pigs, the complex correlation index (R ~ 2) was higher than 0.99, combined with the sum of squared residuals (E) and chi square (χ ~ 2) The fitted fitness of Von Bertalanffy model is higher, the fitting equation of male and female pigs is y = 32.149 (1-0.718e ~ (-0.161t)) ~ 3 and y = 42.568 (1 ~ 0.736e ~ (-0.144t)) ~ 3. Compared with sows, boars have a lower initial body weight, maximum body weight, monthly weight gain and body weight. Boar inflection point age of 4.77 months, sow inflection point age of 5.99 months.