动物营养学报2011，Vol.23Issue(4)：597-603,7.DOI:10.3969/j.issn.1006-267x.2011.04.010
不同NFC/NDF比对奶山羊瘤胃微生物及瘤胃pH变化的影响
Effects of Different Dietary NFC/NDF Ratios on Ruminal Microorganisms and pH in Dairy Goats
摘要
Abstract
This experiment was conducted to investigate the effects of different dietary NFC/NDF ratios on mminal microorganisms and pH in dairy goats under subacute mminal acidosis (SARA). In this self controlled stody, six mmen-cannulated Guanzhong lactating dairy goats were selected and self-control method was used. The experiment was carried out for 4 periods with 10 d each period. The goats were fed diets with different NFC/NDF ratios, which were 1.02 ( period I ), 1.24 ( period Ⅱ ), 1.63 ( period Ⅲ ) and 2.58 (period Ⅳ ),respectively. Meanwhile, subacute ruminal acidosis (SARA) was induced by the gradually increasing concentrate. The results showed as follows: the mminal pH decreased significantly with the increasing of dietary NFC/NDF rations (P ＜0. 05), and the decreasing scale increased; the number of amylolytic bacteria increased remarkably with the gradually increasing dietary NFC/NDF ratios ( P ＜0. 01 ), the number of mminal total bacterial, Lactobaillus and Fusobacterium necrophomm increased significantly when the ratio was 1.63 ( P ＜ 0. 05),and the number of Megasphera elsdenii and Selenononas ruminantium increased significantly when the ratio was 2. 58 (P ＜0. 05); the number of total ciliates dropped to the lowest in period IV, but the populations of Strepococcus bovis did not change obviously (P ＞ 0. 05). The results indicate that when the NFC/NDF ratio is 1.63,the majority of mmen bacteria which related to the decomposition of carbohydrates increases obviously, especially during SARA period, but the population of total ciliates falls to the lowest. [ Chinese Journal of Animal Nutrition ,2011,23(4) :597-603 ]关键词
NNC/NDF比/亚急性瘤胃酸中毒/瘤胃微生物/瘤胃pHKey words
NFC/NDF ratios/ SARA/ mminal microorganisms/ ruminal pH分类
农业科技引用本文复制引用
韩昊奇,刘大程,高民,胡红莲,谢昌贤,邓维康,刘运添,王鹏飞,卢德勋..不同NFC/NDF比对奶山羊瘤胃微生物及瘤胃pH变化的影响[J].动物营养学报,2011,23(4):597-603,7.基金项目
国家自然科学基金项目(30960252) （30960252）
国家奶牛产业技术体系项目(nycytx-02-05) （nycytx-02-05）
