摘要
The effects of supplementing feed of cows in mid-to-late lactation with an active yeast product (Actisaf Sc 47) were evaluated using 15 Holstein cows in a replicated 3 × 3 Latin square design. The animals were fed a mixed ration with 33% neutral detergent fiber, consisting of timothy hay (29.8%), a commercial concentrate (70.0%) and commercial calcium triphosphate (0.2%), twice daily to meet 105% of their energy requirement. Yeast supplement was set at 0, 5 and 10 g per day over 21-day periods, each of which consisted of 14 days for adaptation followed by 7 days of data collection. Milking performance, plasma metabolite parameters, rumen volatile fatty acids, lipopolysaccharide and microbial properties were measured. Although there were no significant differences in feeding and milking performance or blood parameters associated with supplementation, the acetate to propionate ratio in the rumen fluid tended to decrease (P = 0.08). The population of Bacteroidetes tended to be less prominent (P = 0.07) and the fibrolytic bacterium Fibrobacter significantly increased (P < 0.05) in the rumen fluid of the yeast 10 g group compared with that of the control. These data suggest that effects of supplementing live yeast to cows in mid-to-late lactation may be limited to microbial composition and fermentation characteristics in the rumen. .overlined { text-decoration: overline; } .struck { text-decoration:line-through; } .underlined { text-decoration:underline; } .doubleUnderlined { text-decoration:underline;border-bottom:1px solid #000; } View Full Article (HTML) Enhanced Article (HTML) Get PDF (525K)Get PDF (525K) More content like thisFind more content: like this articleFind more content written by: Yutaka Uyeno Kiyoshi Akiyama Toshiya Hasunuma Hiroshi Yamamoto Hiroaki Yokokawa Tsuneko Yamaguchi Kenji Kawashima Minoru Itoh Shiro Kushibiki Makoto Hirako All Authors
摘要译文
使用15头荷斯坦奶牛在一个重复的3-壝椻 方形设计中评价在中期至晚期泌乳期中用活性酵母产品（Actisaf Sc 47）补充奶牛的饲料的效果给动物喂以33％25中性洗涤剂纤维的混合比例，所述中性洗涤剂纤维由梯牧草（29 5），商业浓缩物（70 5）和市售三磷酸钙（0 5）组成，每天两次，以满足其能量需求的105％25。在21天的时间内，每日补充剂量为0,5和10天，每个组包括14个适应症，然后7个数据收集的数据收集性能，血浆代谢物参数，瘤胃挥发性脂肪酸，脂多糖和微生物性能。尽管与补充相关的喂养和挤奶性能或血液参数没有显着差异，瘤胃液中的乙酸盐与丙酸盐的比例趋于下降（P 0.05）。Bacteroidetes的种群往往不那么突出（P？07）和纤维细菌纤维杆菌在酵母菌群的瘤胃液中显着增加（P 0.05），与对照组相比这些数据表明，在中期至晚期泌乳期向奶牛补充活酵母的效果可能限于瘤胃中的微生物组成和发酵特性overlined {text-decoration：overline; }竤truck {text-decoration：line-through; }竨nderlined {text-decoration：underline; }竏oubleUnderlined {text-decoration：underline; border-bottom：1px solid＃000;leFind书面更多内容：丰Uyeno秋山清莲沼俊山本浩横川宏明山口Tsuneko川岛贤治伊藤稔栉引四郎平子真所有的著者
Yutaka Uyeno[1]; Kiyoshi Akiyama[2]; Toshiya Hasunuma[3]; Hiroshi Yamamoto[4]; Hiroaki Yokokawa[5]; Tsuneko Yamaguchi[6]; Kenji Kawashima[6]; Minoru Itoh[7]; Shiro Kushibiki[8,*] and Makoto Hirako[8,*];. Effects of supplementing an active dry yeast product on rumen microbial community composition and on subsequent rumen fermentation of lactating cows in the mid-to-late lactation period[J]. Animal Science Journal, 2017,88(1): 119-124