Abstract: [Objective] To assess the effect of different dietary fat contents on biochemical indices of liver function in local Liuyang black goats. [Method] Fifteen healthy Liuyang black goats were selected and divided into control group, high-fat groupⅠand high-fat groupⅡ. The fat content in feed was determined according to the international standard method. Feed with different fat contents was prepared, and the control group, high-fat groupⅠand high-fat groupⅡ fed the diet with fat content of 3.8%, 15.2% and 7.6%, respectively. Blood samples of the experimental goats were collected at the 0, 15^th and 30^th day after receiving the diet, and the serum levels of ALT, AST, ALP, TP, TG and TC were determined. [Result] At the 30^th day after receiving the diet with different fat contents, the body weight of both high-fat groupⅠand high-fat groupⅡ was significantly （P<0.05） increased comparing to that before the experiment, but no significant （P>0.05） difference in body weight was observed in control group before and after the experiment. Serum biochemical tests showed that compared with the control group, the serum levels of AST, ALP and TP in high-fat groupⅠwere significantly （P<0.05） increased, but there was no significant （P>0.05） differences in levels of ALT, TC and TG; the serum levels of ALT, AST, ALP and TC in high-fat groupⅡ were significantly increased （P<0.05）, serum level of TG was significantly （P<0.05） decreased, but there was no significant （P>0.05） difference in level of TP. [Conclusion] Dietary supplementation of fat with proper ratio can improve the weight gain of goats, but excessive addition results in abnormal biochemical indicators associated with liver function. Our results may provide a reference for determination of a reasonable supplementation ratio of fat in feed.

Key words: Liuyang black goat, fat content, serum biochemical indices, liver function