发酵菜籽粕对生长猪生长性能、机体抗氧化及免疫功能的影响.

【Objective】The experiments were conducted to evaluate the effects of fermented rapeseed meal on the performance, immunology and antioxidant function of growing pigs. 【Method】A total of 64 healthy crossbred (Duroc x Landrace x Yorkshire) growing pigs with similar weight were randomly allotted to 4 dietary treatments with 4 replicates in each treatment and 4 pigs in each replicate. In 4 treatments, control group was corn-soybean basal diet, three experimental groups were fermented rapeseed meal replaced soybean meal in the basal diet at 2. 5 %, 5 %, 7. 5 % 'respectively! each dietary treatment was isonitrogenous). 【Result】(i) The average daily gain (ADG) and average daily feed intake ( ADFI) in experimental groups were higher than that in control group. ADG, ADFI in group 3 and ADFI in group 2 were significantly higher than that in control group(P < 0. 05). There were no significant differences in ratio of feed to gain (F/G) among all treatment groups, but F/G in group 3 was the minimum, 6 . 07 % lower than the control group (P > 0. 05). (ii) The serum superoxide dismutase(SOD) activity and total antioxidant capability(T-AOC) in group 3 were significantly higher than that in control group(P < 0. 05), the serum malondialdehyde(MDA) content was significantly lower than that in control group(P < 0. 05 ). There were no significant differences in serum glutathione peroxidase (GSH-Px) and catalase(CAT) activity among all groups (P > 0. 05). (iii) The serum immunoglobulin A( IgA) ,immunoglobulin G(IgG) and interleukin-2(IL-2) contents in group 3 were significantly higher than that in control group(P < 0. 05). There were no significant differences in serum immunoglobulin M(IgM), interleukin-1 ( IL-1), interleukin-6 ( IL-6 ) and tumour necrosis factor-) ( TNF-a) contents among all groups (P > 0. 05). 【Conclusion 】In conclusion， under the condition of this trial， the fermented rapeseed meal can improve the performance，antioxidant and immunology function of growing pigs，and its optimal replacement level was 7.5%. [ABSTRACT FROM AUTHOR]