夏季初产母兔泌乳曲线分析

Analysis of the lactation curve of primiparous rabbit does in summer

为了探讨夏季初产母兔的泌乳规律及特点,试验采用二次函数(QF)、修正的β函数(BF)、修正的多项式函数(PF)、高斯函数(GF)以及Wood模型(WM)对测定的30只母兔1~28 d每天的泌乳量进行评估。结果表明:母兔1~28 d泌乳期间个体的总泌乳量为(4 077.60±834.48)g,平均日泌乳量为(145.63±29.80)g,泌乳量峰值出现在第21天。所有模型均表现出较好的拟合效果(0.823≤R^2≤0.941),其中GF模型拟合度(R2)值最高,拟合的函数模型为y=186.574e-12[(t-20.490)/13.016]2,拟合的曲线与实际泌乳曲线较为吻合,表明高斯函数是本研究中的最佳泌乳曲线拟合模型。

To investigate the lactation regularity and characteristics of primiparous rabbit does in summer, daily lactation amount of 30 rabbit does from 1 to 28d during lactation period were evaluated using quadratic function （QF）, modified beta function （ BF）, modified polynomial function （PF）, gauss function （GF）, and Wood model （WM）. The results showed that the total lactation amount and average daily lactation amount during lactation period was （4 077.60±834.48 ） and （ 145.63 ± 29.80） g, respectively. A peak of lactation amount appeared at 21 d. All the models presented a good fitting to the average lactation curve （0. 823 ≤ R^2 ≤0. 941 ）. GF model showed had the highest R^2 value and the fitting fuction was： y = 186. 574e ^-1/2（t- 20. 490）/13. 016]^2. The fitting curve was consistent with the actual lactation curve, indicating that the Gauss function was the best fitting model of lactation curve in this study.