ORIGINAL PAPER
 
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ABSTRACT
The aim of this study was to evaluate the replacement of oat hay exclusively with fermented prickly pear in developed multi-nutritional blocks (MNBs) on steer production efficiency and in vitro rumen fermentation parameters. Two experiments were performed: Trial 1 (in vitro assay) evaluated in vitro fermentation parameters of three MNBs replacing oat hay (MNB0 – 0% prickly pear, MNB1 – 25% prickly pear, MNB2 – 25% fermented prickly pear). Trial 2 (in vivo assay) evaluated the effect of MNBs on steer production performance. Both experiments were established as a completely randomized design. The values for proteins, metabolisable energy, gas production, methane and CO2were higher in MNB2 (P < 0.05) group. Total and individual volatile fatty acids differed between experimental MNBs groups (P < 0.05). Mean body weight and mean live-weight gain of steers were increased with MNB supplementation in T2 group by 12 and 37%, respectively. Dry matter digestibility was higher (P < 0.05), but methane and CO2 production in the rumen decreased with MNB supplementation (P < 0.05). Replacing 25% of oat hay with fermented prickly pear leaves increases the nutritional quality of MNB2, while improving animal production variables and reducing rumen methane emissions.
CONFLICT OF INTEREST
The Authors declare that there is no conflict of interest.
METADATA IN OTHER LANGUAGES:
Chinese
豆科植物中棉子糖低聚糖的含量及其对动物的重要性
摘要: 本研究旨在评估采用仙人果制备的多重营养饲料块 (MNB) 替代燕麦干草饲养肉牛对其生产效率和体 外瘤胃发酵参数的影响。本研究由两个试验组成:试验1 (T1:体外试验)评估了三种MNB替代燕麦干草 (MNB0:0% MNB、MNB1:25% MNB、MNB2–25% 发酵MNB) 的体外发酵参数。试验2 。 T2 :体内试验)评估 了上述3种MNB添加对肉牛生产性能的影响。两个实验均为完全随机设计。T1试验中,MNB2组的蛋白质含 量、代谢能、产气量、甲烷和CO2 值均显著升高 (P < 0.05)。各MNBs组之间的总挥发性脂肪酸和单个挥发性 脂肪酸存在差异 (P < 0.05)。T2试验中, T2组的平均体重和平均增重随MNB增加分别增加了12%和37%。添加 MNB后的瘤胃干物质消化率较高 (P < 0.05),但甲烷和CO2 的产生量降低 (P < 0.05)。用发酵的仙人果叶MNB代替 25%的燕麦干草可提高MNB2组的营养质量,同时改善动物生产变量并减少瘤胃甲烷排放。
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