| 产酶益生素对西门塔尔牛瘤胃液pH及氨态氮浓度的影响 |
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| 引用本文： | 李新,冀连斌,王聪,刘强,石彩叶. 产酶益生素对西门塔尔牛瘤胃液pH及氨态氮浓度的影响[J]. 中国饲料, 2012, 0(5): 24-25,28 |
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| 作者姓名： | 李新 冀连斌 王聪 刘强 石彩叶 |
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| 作者单位： | 山西农业大学动物科技学院 |
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| 基金项目： | 山西省科技厅攻关项目(20100312014)资助 |
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| 摘 要： | 试验选用4头体重(500±20)kg,年龄3.5岁,装有永久性瘤胃瘘管的西门塔尔牛阉牛,采用4×4拉丁方设计,以混合精料和风干玉米秸秆为基础日粮,研究日粮中添加产酶益生素(0、10、20 g/d和30 g/d)对瘤胃液pH及氨态氮浓度的影响。结果表明:日粮添加产酶益生素后,瘤胃pH在采食后3、6 h以及平均值随着添加量的增加有提高的趋势,但差异不显著(P>0.05);20 g/d组和30 g/d组瘤胃液氨态氮浓度显著低于对照组(P<0.05)。以上结果表明,产酶益生素的适宜添加水平为20 g/d。
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| 关 键 词： | 产酶益生素 西门塔尔牛 瘤胃液pH 氨态氮浓度 |
Effects of E-probiotics on ruminal pH and ammonia nitrogen concentration in Simmental steer |
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| Affiliation: | Li Xin,Ji Lianbin,Wang Cong,et al. |
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| Abstract: | Four Simmental steers[BW(500 ± 20)kg,3.5 years old] with permanent rumen cannula consuming corn straw diet were used in a 4 × 4 Latin square design and supplemented with four concentrations(0,10,20 g/d and 30 g/d) of E-probiotics to evaluate the effects of different E-probiotics concentration on ruminal pH and ammonia nitrogen concentration.The results showed that:the ruminal pH in the 20 g/d group were significantly higher than control group(P < 0.05).The ammonia nitrogen concentration in 20 g/d and in the 30 g/d group were significantly lower than that of control group(P < 0.05).The results indicated that the optimum dose of E-probiotics supplementation was 20 g/d. |
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| Keywords: | E-probiotics Simmental steer ruminal pH ammonia nitrogen concentration |
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