高粱
生物
动物科学
营养物
蛋白酵素
球蛋白
白蛋白
食品科学
生物化学
内分泌学
农学
酶
生态学
作者
Peng Xie,Qiang Zhou,Chunqing Wang,Zhiming Zhang,Zheng Luo,Shengyu Xu,Bin Feng,Zhengfeng Fang,Yan Lin,Yong Zhuo,Xuemei Jiang,Hua Zhao,Junyang Tang,De Wu,Lianqiang Che
出处
期刊:Animal
[Elsevier]
日期:2023-12-13
卷期号:18 (1): 101052-101052
被引量:1
标识
DOI:10.1016/j.animal.2023.101052
摘要
Low-tannin sorghum is an excellent energy source in pig diets. However, sorghum contains several anti-nutritional factors that may have negative effects on nutrient digestibility. The impacts of proteases on growth performance, nutrient digestibility, blood parameters, and gut microbiota of growing pigs fed sorghum-based diets were studied in this study. Ninety-six pigs (20.66 ± 0.65 kg BW) were allocated into 3 groups (8 pens/group, 4 pigs/pen): 1) CON (control diet, sorghum-based diet included 66.98% sorghum), 2) PRO1 (CON + 200 mg/kg proteases), 3) PRO2 (CON + 400 mg/kg proteases) for 28 d. No differences were observed in growth performance and apparent total tract digestibility (ATTD) of nutrients between CON and PRO1 groups. Pigs fed PRO2 diet had increased (P < 0.05) BW on d 21 and 28, and increased (P < 0.05) average daily gain (ADG) during d 14 to 21 and the overall period compared with pigs fed CON diet. In addition, pigs fed PRO2 diet had improved (P < 0.05) ATTD of gross energy, CP, and DM compared with pigs fed CON and PRO1 diets. Pigs fed PRO2 diet had lower (P < 0.05) plasma globulin (GLB) level and higher (P < 0.05) plasma glucose (Glu), albumin (ALB) and immunoglobulin G (IgG) levels, and ALB/GLB ratio than pigs fed CON and PRO1 diets. Furthermore, pigs fed PRO2 diet had decreased (P < 0.05) the relative abundance of Acidobacteriota at the phylum level and increased (P < 0.05) the relative abundance of Prevotella_9 at the genus level. The linear discriminant analysis effect size (LEfSe) analysis also showed that pigs fed PRO2 diet had significantly enriched short-chain fatty acid-producing bacteria, such as Subdoligranulum and Parabacteroides. In conclusion, proteases supplementation at 400 mg/kg improved the growth performance of growing pigs fed sorghum-based diets, which may be attributed to the improvement of nutrient digestibility, host metabolism, immune status and associated with the altered gut microbiota profiles.
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