添加游离不饱和脂肪酸或植物油对瘤胃微生物体外发酵及微晶纤维素降解的影响

被引:24
作者
魏宏阳
王加启
机构
[1] 中国农业科学院畜牧研究所
关键词
游离不饱和脂肪酸; 植物油; 体外法; 微晶纤维素降解; 瘤胃微生物;
D O I
暂无
中图分类号
S816 [饲料];
学科分类号
090502 ;
摘要
用体外静态培养法研究添加游离不饱和脂肪酸混合物(FFAM)和植物油对瘤胃微生物培养液pH值、总挥发性脂肪酸(TVFA)和微晶纤维素降解的影响。采用4×4的2因子试验设计,4种植物油为豆油、棉籽油、菜籽油和亚麻油,每种植物油设置0、5、10和15mg4种添加水平,另外再设置1个5mgFFAM处理。结果显示,5mgFFAM处理组的pH值显著高于其它处理组(P<0.01),TVFA浓度和微晶纤维素粉的消失率显著低于其它处理组(P<0.01),TVFA中丙酸的比例显著高于其它各组(P<0.05)。植物油种类和添加水平对瘤胃微生物发酵及微晶纤维素降解有显著影响(P<0.01)。亚麻油添加量达到10mg,豆油添加量达到15mg后瘤胃pH值开始显著上升,TVFA浓度和微晶纤维素粉消失率显著下降(P<0.05)。在15mg添加水平,按照微晶纤维素粉消失率从小到大的顺序排列,4种植物油处理的顺序为:亚麻油、豆油、棉籽油和菜籽油,与不饱和度顺序一致。
引用
收藏
页码:491 / 497
页数:7
相关论文
共 14 条
[1]  
The effects of fatty acids on pure cultures of rumen bacteria. Henderson C. The Journal of Agricultural Science . 1973
[2]  
Conjugated linoleic acid content of milk from cows offered diets rich in linoleic and linolenic acid. Dhiman T R,Satter L D,Pariza M W,et al. Journal of Dairy Science . 2000
[3]  
Effect of di-etary sunflower oil and pasture forage maturity on conju-gated linoleic acid content in milk fat from lactating dairycows. Griinari J M,Dwyer D A,McGuire,et al. Journal of Dairy Science . 1998
[4]  
Conjugated linoleic acid suppresses mammary carcinogenesis and proliferative activity of mammary gland in the rat. Ip C,Singh M,Thompson H J,et al. Cancer Research . 1994
[5]  
The effect of varying the amount of linseed oil supplementation on rumen metabolism in sheep. Ikwuegbu O A,Sutton J D,et al. British Journal of Nutrition . 1982
[6]  
Lipid metabolism in the rumen. Jenkins T G. Journal of Dairy Science .
[7]  
Effects of tallow supplementation and protein withdrawal on ruminal fermentation, microbial synthesis and site of digestion. Boggs D L,Bergen W G,Hawkins D R,et al. Journal of Animal Sciences . 1987
[8]  
Manipulation of rumen fermentation. Van Nevel C J,Demeyer D I. In: rumen microbial ecosystem . 1988
[9]  
Approved lists of bacterial names. Skerman V B,McGowan D V,Sneath P H A. International Journal of Systematic Bacteriology . 1980
[10]  
Effect of unsaturated fatty acids on cellulose degradation and fermentation characteristics by mixed ruminal microbes. Hwang I H,Kim H D,Shim S S,et al. Asian Australasian Journal of Animal Sciences . 2001