日粮纤维对于肥育猪生产性能和血清参数的影响

A Study on the Effects of Dietary Fiber on Performance and Serum Parameters in Finishing Pigs

使用 48头体重为 60kg左右的“杜长嘉”三元杂交猪作为试验动物 ,根据体重相近、公母各半的原则将其分为对照组、试验组 1和试验组 2 ,研究日粮中不同含量的纤维对于肥育猪生产性能和血清参数的影响。以甜菜渣和苜蓿草粉作为试验组日粮的主要纤维源 ,3个组的粗纤维含量分别为 3 %、6%和 8%。结果表明 :(1 )日粮中粗纤维含量为 6% ,可以获得较为理想的生产性能 ;(2 )日粮中粗纤维含量为 8% ,猪表现为采食量偏低 ,显著降低了猪的日增重和饲料转化率 (P <0 .0 5 ) ;(3 )日粮纤维显著影响了血液中谷草转氨酶的活性 (P<0 .0 5 ) ,而对其他生化指标没有产生显著的影响 (P >0 .0 5 ) ;(4 )提高日粮纤维含量 ,血液中生长激素和三碘甲腺原氨酸的水平被显著升高 (P <0 .0 5 )。

pigs (Duroc×Landrace×Jia) were used to study on the effects of three levels of crude fiber:3%, 6% and 8% on performance and serum parameters in finishing pigs. Dividing into control group, treatment 1,treatment 2 by weight and sex. Sugar beet pulp and alfalfa hay meal were selected as the main fiber sources in the tested diet. The results showed: (1)When the level of crude fiber was 6%, the performance was the greatest; (2)When level of crude fiber was 8%, the daily feed intake was decreased, the daily gain and feed conversion were significantly decreased (P<0.05); (3)Dietary fiber had significance effect on serum activity of glutamate-oxalacetate transaminase (P<0.05), but there were no significance differences in other biochemical parameters in serum; (4)Levels of growth hormone and triiodothyronine were significantly increased in serum with the increase of dietary fiber.