Effects Of Legume Extracts On Performance And Immunity Of Farm Animals

Three kinds of animals were used to study the effects of legume extracts on performance and immunity of animals.The first experiment: seventy two New Zealand Brittany rabbits of 35-day-old were used in this experiment and randomly divided into 4 groups with 18 rabbits per group. Legume extracts were added at 1.0kg/T, respectively, in the diets of group B, group C and group D, and group A was as a control. The results shown that the average daily gain of group D was slightly higher than that of the control, and the FCR of group C was lower than the control (P>0.05 ). During the experiment the death rate of the control was 16.67%, while group C and D was 11.11%, but there were no rabbits died in group B.The second experiment: forty eight Rex rabbits of 35-day-old were used in this experiment and divided into 4 groups randomly with 12 rabbits per group. Legume extracts were added at 1.2kg/T respectively in the diets of group B, group C and group D, and group A was as a control. Effects of the extracts on the immune organ growth, the blood biochemistry index and performance were compared. The results shown that: (1) the average daily gain of group C was 22.80% higher than control (P<0.01), and the feed/gain of group C was 18.49% lower than control (P<0.01), the other groups also exhibited better growth performance than the control. (2) The rabbits of group C tended to have higher eviscerated weights with giblets and the blood biochemical indices of ALB, A/G and IgM. The immune organ weight was ascended, and the TP, GLO were lower than the control. And the differences of IgM were significantly (P<0.05), there were no significant differences when come to the other index (P>0.05) . The third experiment: tweny seven growing pigs at the average body weight of 18.78Kg were randomly divided into 9 pens in a completely randomized block design with 3 pigs per pen. Legume extracts were added at 1.0 kg /T respectively in the diets of group C and D, and group A was as a control.The results shown that: (1) Compared with the control, the average daily gain of group C and D increased by 11.32% and 3.33% (P>0.05), The PCR of the group C and D decreased by 8.2% and 1.82% (P>0.05) .(2)The content of TP in serum of group C and D were less than the control. The content of ALB in serum of group C and D were 5.33g/L and 3.08g/L higher than the control respectively (P<0.05). Compared with the control, the content of GLO of the group C and D were decreased by 6.6g/L and 7.93g /L (P<0.05), but the A/G of C and D were 47.87% and 39.39% higher than the control respectively (P<0.05). The content of BUN in serum of group C tended to decrease (P>0.05) and D were same to the control. (P>0.05); (3)Compared with the control, the content of IgG in serum of group D tended to increase (P>0.05),and the content of IgA of group C increased by 137.40%, and D decreased by 94.96 %(p<0.05),every group had the same content of IgM in serum. (4)The level of INS of group D tended to increase, but the level of INS of group C tended to decrease (P>0.05) ; Compared with the control, the content of FT3 and FT4 in serum of group C and D tended to increase (P>0.05). FT3/FT4 of group D was 3.21% higher and C was 4.27% lower than the control (P>0.05) .All the results shown that, the new legume extracts types could stimulate the growth performance and immune functions of the three breeds of animals. Especially NO. 33 showed the better effects. There will be broad market when the extracts were used as feedstuff additives.