Leizhou goats are famous for their delicious meat but have inferior growth performance. There is little information on rumen-protected fat (RPF) from the Leizhou goat. Hence, we observed the effects of RPF on growth, fecal short-chain fatty acids, and bacteria community with respect to Leizhou goats. Twelve goats (13.34 ± 0.024 kg) were selected and assigned randomly to one of two treatments: (1) a control diet (CON) and (2) 2.4% RPF with a control diet (RPF). The final body weight and average daily gain (ADG) were greater (p < 0.05), and the dry matter intake (DMI): ADG was lower (p < 0.05) in the RPF group than in the CON group. There were no differences in DMI between the CON and RPF groups. The concentrations of total short-chain fatty acids, acetate, propionate, and butyrate were lower (p < 0.05) in the RPF group than in the CON group. The relative abundances of Ruminococcus, Rikenellaceae_RC9_gut_group, Treponema, norank_f__norank_o__RF39, Eubacterium_siraeum_group, and Ruminococcus_torques_group were lower (p < 0.05) in the RPF group than in the CON group. The relative abundances of Bacteroides, norank_f__norank_o__Clostridia_UCG-014, norank_f__Eubacterium_coprostanoligenes_group, Eubacterium_ruminantium_group, norank_f__Oscillospirale-UCG-010, Oscillospiraceae_UCG-002, and Family_XIII_AD3011_group were greater (p < 0.05) in the RPF group than in the CON group. It was concluded that RPF could improve the goats’ growth performance by regulating their fecal bacteria communities.

中文翻译：

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提供瘤胃保护脂肪的山羊粪便细菌群落的变化

雷州山羊肉质鲜美，但生长性能较差。关于雷州山羊瘤胃保护脂肪（RPF）的信息很少。因此，我们观察了 RPF 对雷州山羊生长、粪便短链脂肪酸和细菌群落的影响。选择 12 只山羊 (13.34 ± 0.024 kg) 并随机分配至两种处理之一：(1) 对照饮食 (CON) 和 (2) 2.4% RPF 与对照饮食 (RPF)。 RPF 组的最终体重和平均日增重 (ADG) 高于 CON 组 (p < 0.05)，而干物质摄入量 (DMI)：ADG 较低 (p < 0.05)。 CON 组和 RPF 组之间的 DMI 没有差异。 RPF 组的总短链脂肪酸、乙酸盐、丙酸盐和丁酸盐的浓度低于 CON 组（p < 0.05）。 RPF 组中瘤胃球菌、Rikenellaceae_RC9_gut_group、密螺旋体、norank_f__norank_o__RF39、Eubacteria_siraeum_group 和 Ruminococcus_torques_group 的相对丰度低于 CON 组（p < 0.05）。 RPF 组中拟杆菌、norank_f__norank_o__Clostridia_UCG-014、norank_f__Eubacteria_coprostanoligenes_group、Eubacteria_ruminantium_group、norank_f__Oscillospirale-UCG-010、Oscillospiraceae_UCG-002 和 Family_XIII_AD3011_group 的相对丰度高于 RPF 组 (p < 0.05) CON组。结论是，RPF 可以通过调节山羊粪便细菌群落来提高山羊的生长性能。