摘要
[Objective] To investigate the effects of amino acid powder, fermented rapeseed meal and fermented cottonseed meal on the growth performance, amino acid absorption, body composition and liver function of allogynogentic crucian carp. [ Method] The allogynogentic crucian carps with the average initial weight of 17.3 g were divided into control group and six experimental groups randomly. The allogynogentic crucian carps in the control group and experimental groups were fed a basal diet and the basal diets supplemented by amino acid powder, fermented rapeseed meal and fermented cottonseed meal, respectively. The growth rate and specific growth rate of allogynogentic crucian carps, the content of amino acids in serum and feeds, the composition indicators of body, muscle and liver, as well as the activities of glutamic-pyruvic transaminase （GPT） and glutamic-oxaloacetic transaminase （GOT） in liver and serum were determined, respectively. [ Result] The growth rate and specific growth rate （SGR） of allogynogentic crucian carps in the 3% amino acid powder group and the 6% fermented cottonseed meal group were increased greatly （ P 〈 0.05）, and no significant difference was found between experimental group and control group. The serum lysine content of the 3% amino acid powder group and the 6% fermented cottonseed meal group was higher than that of the control group. In the experimental groups, the absorption of four essential amino acids was up to a peak at 4 h after feeding, which was consistent with the control group. The body composition and liver function of allogynogentic crucian carps had no significant difference between the experimental groups and the control group. [ Conclusion] The 3% amino acid powder, 6% fermented cottonseed meal and 6% fermented rapeseed meal can substitute fish meal, cottonseed meal and rapeseed meal to improve the clrowth performance, amino acid absorption of the allogynogentic crucian carps.
[Objective] To investigate the effects of amino acid powder, fermented rapeseed meal and fermented cottonseed meal on the growth performance, amino acid absorption, body composition and liver function of allogynogentic crucian carp. [ Method] The allogynogentic crucian carps with the average initial weight of 17.3 g were divided into control group and six experimental groups randomly. The allogynogentic crucian carps in the control group and experimental groups were fed a basal diet and the basal diets supplemented by amino acid powder, fermented rapeseed meal and fermented cottonseed meal, respectively. The growth rate and specific growth rate of allogynogentic crucian carps, the content of amino acids in serum and feeds, the composition indicators of body, muscle and liver, as well as the activities of glutamic-pyruvic transaminase （GPT） and glutamic-oxaloacetic transaminase （GOT） in liver and serum were determined, respectively. [ Result] The growth rate and specific growth rate （SGR） of allogynogentic crucian carps in the 3% amino acid powder group and the 6% fermented cottonseed meal group were increased greatly （ P 〈 0.05）, and no significant difference was found between experimental group and control group. The serum lysine content of the 3% amino acid powder group and the 6% fermented cottonseed meal group was higher than that of the control group. In the experimental groups, the absorption of four essential amino acids was up to a peak at 4 h after feeding, which was consistent with the control group. The body composition and liver function of allogynogentic crucian carps had no significant difference between the experimental groups and the control group. [ Conclusion] The 3% amino acid powder, 6% fermented cottonseed meal and 6% fermented rapeseed meal can substitute fish meal, cottonseed meal and rapeseed meal to improve the clrowth performance, amino acid absorption of the allogynogentic crucian carps.
基金
supported by the Applied Basic Research Projects of Suzhou City (YJG0912)
