中文摘要：

为了阐明槟榔江水牛的生长发育规律，分别利用 Ｂｒｏｄｙ，Ｇｏｍｐｅｒｔｚ和 Ｌｏｇｉｓｔｉｃ模型对其体重、体高、体斜长、胸围、腹围、管围 ６个指标进行了累积生长曲线方程的拟合和比较分析，并利用日增重描述了该水牛的绝对生长，进一步采用改进的计算方法对其相对生长规律作了分析。结果表明：３种曲线模型拟合的效果都很好 （ｒ２＞０９５）。通过比较各个性状的拟合度，Ｂｒｏｄｙ模型的拟合度最大，最适合用于槟榔江水牛的生长发育研究。由 Ｇｏｍｐｅｒｔｚ模型计算出槟榔江水牛公牛的拐点月龄和拐点体重分别为 ７１月龄和 １２２４ｋｇ；母牛的拐点月龄和拐点体重分别为 ６０月龄和 １０７９ｋｇ。公、母牛都在 ６月龄达到绝对生长高峰，而 １８月龄绝对生长速度最慢。公牛的日增重呈先下降后上升的过程。母牛的日增重出现了 ２个峰，一个在 ６月龄，另一个在２４月龄。公、母牛的相对生长曲线较一致，后期生长强度明显不如前期，整条曲线大致上呈下降趋势，表明在幼年时新陈代谢旺盛，生长发育的强度大，成年后趋于稳定。本研究提示应加强槟榔江水牛的饲养管理，特别应重视其母牛和育成期牛的饲养管理

英文摘要：

To elucidate growth and development patterns of Binglangjiang buffalo, Brody, Gompertz and Logistic model were employed to fit its cumulative growth curves by using 6 experimental indexes （viz. body weight, body height, body slanting length, chest circumference, abdominal circumference, circumference of cannon bone）. Meanwhile, average daily gain （ADG） was adopted to describe and analyse its absolute growth, and an improved method was used to analyse its relative growth. The results revealed that three models could be fitted very well for all the indexes analyzed （r^2〉0. 95 ） , and Brody model was the best model for studying growth and development patterns of Binglangjiang buffalo. The growth age and body height at inflection points estimated by using Gompertz model were 7. 1 months old and 122.4 kg for male, and 6.0 months old and 107.9 kg for female buffalo, respectively.Both of the male and female buffalo reached their absolute growth peak at 6 months old and their absolute growth rate became slowest at 18 months old. The ADG of male buffalo first descended, and then ascended, while the ADG of female buffalo was relatively complicated. There were two absolute growth peaks, one at their 6 months old, and the other at their 24 months old. The relative growth curve of male and female buffalo were basically similar, The growth intensity at later stage was significantly inferior to that of at early stage, The relative growth curve displayed generally downward trend, which indicated that the vigorous metabolism and the highest growth intensity for juvenile buffalo, and tending to be stable for the adult animals. The results in this study suggested that we should strengthen the feeding and management of Binglangjiang buffalo, especially its female buffalo and growing buffalo.