Effects of clove leaves on growth and plasma biochemical indicators in Amur sturgeon
ZHENG Qiu-shan, XU Qi-you
1. Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin 150070, China; 2. Institute of Animal Science and Teehnalogy, Northeast Agricultural University, Harbin 150030, China
Abstract: Juvenile Amur sturgeon Acipenser schrenckii weighing 35 - 36 g was stocked into tanks of each 60 cm ×50 cm ×50 cm at 20 individuals per tank and fed the diets （42.18% of crude protein, and 12.20% crude fat） containing 0（control group）, 1% （group A）, 2% （group B）, 3% （group C）, 4% （group D）, 5% （group E）, 6% （group F）, 8% （group G） ,or 10% （group H） clove leaves for 56 days to evaluate the influence of clove leaves on growth performance and immunity in Amur sturgeon at water temperature of 21 -23 ℃. The results showed that there were no significant differences in weight gain rate, specific growth rate and feed conversion ratio between the control group, and group A and group B （ P 〉 0.05 ）. There were significantly （P 〈 0.05 ） or very significantly （ P 〈0.01 ）lower plasma protein and globulin levels in groups A, B, D, E, G, and H than those in the control group. The fish had significantly lower（ P 〈 0.05 ） plasma protein level and significantly higher （ P 〉 0.05 ） glutamate - pyruvate transaminase （GPT） in group H than the fish in the control group did. No significant difference （P 〉 0. 05） in glutamate -oxaloaeetate transaminase （GOT） was found in all groups. There were significantly lower C3, and C4 levels in all groups but groups C and F （ P 〈 0.05 ）, indicating that dietary supplementation of clove leaf would to some extent inhibit the growth and immunity in Amur sturgeon.
2009, Vol. 24 
