The study aimed to evaluate the effect of sugarcane bagasse feeding treated with Lactobacillus casei TH14 (L. casei TH14), cellulase and molasses (BG) on nutrient digestibility, ruminal fermentation, energy partition and growth performances of Thai native steers compared to conventional feeding of rice straw (RS). Eight Thai native steers (144 Â± 19.5 kg of initial body weight) were randomly allocated to two roughage sources in a completed randomized design: RS (n = 4) and BG (n = 4). The feeding trial lasted for 90 days plus 21 days for treatment adaptation. The results showed that the BG group showed (p < 0.05) greater intake (2.34 vs 2.02 kg/day), total intake (3.90 vs 3.55 kg/day) and average daily gain (0.27 vs 0.23 kg/day) while feed conversion ratio was lower compared to RS group. The BG group had a greater (p < 0.05) organic matter and acid detergent fibre intake than the RS group as well as dry matter and neutral detergent fibre digestibility. The steers fed RS and BG were significantly (p < 0.05) different for total volatile fatty acids and propionic acid at 4 h after offering the diet. The intake of nitrogen (g/day) and apparent nitrogen absorption was significantly (p < 0.05) higher for BG than the RS group while nitrogen excretion in faeces was significantly lower in RS than the BG group. BG group showed significantly (p < 0.05) greater gross energy intake and digestible energy partition when compared to the RS group. In conclusion, feeding BG enhanced feed utilization, growth performance, ruminal fermentation, nitrogen utilization and energy utilization.

中文翻译：

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用乳酸菌、纤维素酶和糖蜜喂食独家稻草和发酵甘蔗渣的泰国本地肉牛的生长性能、养分消化率、瘤胃发酵和能量分配

本研究旨在评估用干酪乳 杆菌TH14 ( L. casei TH14)、纤维素酶和糖蜜 (BG) 处理的甘蔗渣饲喂对泰国本地肉牛的营养消化率、瘤胃发酵、能量分配和生长性能的影响。稻草（RS）。八头泰国本地阉牛（144 ± 19.5 公斤的初始体重） 被随机分配到一个完整的随机设计中的两个粗饲料来源：RS ( n  = 4) 和 BG ( n  = 4)。喂养试验持续了 90 天，外加 21 天以适应治疗。结果显示，BG组表现出（p < 0.05) 更高的采食量（2.34 对 2.02 公斤/天）、总采食量（3.90 对 3.55 公斤/天）和平均日增重（0.27 对 0.23 公斤/天），而饲料转化率低于 RS 组。BG 组的有机物和酸性洗涤纤维摄入量高于 RS 组（p  < 0.05），干物质和中性洗涤纤维的消化率也高于 RS 组。饲喂 RS 和 BG 的肉牛在饲喂 4 小时后的总挥发性脂肪酸和丙酸存在显着差异 ( p < 0.05)。BG组的氮摄入量（g/天）和表观氮吸收量显着高于RS组（p  < 0.05），而RS组粪便中的氮排泄量显着低于BG组。BG组显着（p < 0.05) 与 RS 组相比，总能量摄入量和可消化能量分配更大。总之，饲喂 BG 提高了饲料利用率、生长性能、瘤胃发酵、氮利用和能量利用。