Wann Chinda, Wanapat Metha, Mapato Chaowarit, Ampapon Thiwakorn, Huang Bi-Zhi
Tropical Feed Resources Research and Development Center (TROFREC), Department of Animal Science, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand.
Yunnan Academy of Grassland and Animal Science, Kunming 650212, Yunnan, China.
Asian-Australas J Anim Sci. 2019 Aug;32(8):1153-1160. doi: 10.5713/ajas.18.0703. Epub 2019 Jan 4.
The objective of this study was to investigate the effect of bamboo grass (Tiliacora triandra, Diels) pellet (Bamboo-Cass) supplementation on feed intake, nutrient digestibility, rumen microbial population and methane production in Thai native beef cattle.
Four Thai native beef cattle bulls (190±2 kg) were randomly allotted to four respective dietary treatments in a 4×4 Latin square design. Treatments were the varying levels of Bamboo-Cass supplementation at 0, 50, 100, and 150 g/head/d, respectively. Rice straw was fed ad libitum and the concentrate offered at 0.5% of body weight.
Under this experiment, the findings revealed that acetate and butyrate production were decreased (p<0.05), propionate increased (p<0.05), whilst ruminal NH3-N concentration was decreased (p<0.05) by supplementation of Bamboo-Cass at 150 g/head/d. Moreover, rice straw intake, and microbial population were linearly increased (p<0.05), while methane production was decreased (p<0.05).
The results from the present study indicate that supplementation of Bamboo-Cass at 150 g/head/d significantly enhanced feed intake, decreased protozoa and increased bacterial population, rumen fermentation efficiency while decreased methane production. Therefore, Bamboo-Cass as a supplement is promising as a rumen enhancer in beef cattle fed on rice straw.
本研究旨在探讨添加竹草（蒂氏青牛胆，迪尔斯）颗粒（竹-卡斯）对泰国本地肉牛采食量、养分消化率、瘤胃微生物种群及甲烷产生的影响。
选用4头泰国本地肉牛公牛（体重190±2千克），采用4×4拉丁方设计随机分配到4种不同的日粮处理组。处理组分别为按每头每天0、50、100和150克的不同水平添加竹-卡斯。随意采食稻草，精料按体重的0.5%提供。
在本试验中，研究结果显示，每天每头添加150克竹-卡斯可使乙酸和丁酸产量降低（p<0.05），丙酸增加（p<0.05），同时瘤胃氨氮浓度降低（p<0.05）。此外，稻草采食量和微生物种群呈线性增加（p<0.05），而甲烷产量降低（p<0.05）。
本研究结果表明，每天每头添加150克竹-卡斯可显著提高采食量，减少原虫数量并增加细菌数量，提高瘤胃发酵效率，同时降低甲烷产量。因此，竹-卡斯作为一种补充剂，有望成为以稻草为食的肉牛的瘤胃增强剂。
