发酵杂交构树对湖羊生长性能、肉品质、消化酶活力及肠道菌群结构的影响

doi:10.16431/j.cnki.1671-7236.2023.05.015

Abstract

Abstract: 【Objective】 The effects of fermented hybrid Broussonetia papyrifera on growth performance,meat quality,digestive enzyme activity and intestinal flora of Hu sheep were studied to provide scientific data for the application of hybrid Broussonetia papyrifera in mutton sheep breeding.【Method】 Seventy-two Hu sheep with good health and similar weight were randomly divided into 4 groups,with 6 replicates in each group and 3 sheep in each replicate.The sheep in control group (CG) was fed with basic diet,while the sheep in experimental groups (EG1,EG2 and EG3) was fed with 16%,24% and 32% fermented hybrid Broussonetia papyrifera respectively.The pre-feeding period was 14 days and the experimental period was 90 days.After the experiment,the weight of Hu sheep was measured,and one sheep was slaughtered randomly from each repetition.Femoral muscles of hindlegs and longissimus dorsi,contents of the middle jejunum and cecum were taken to determine the meat quality,digestive enzyme activity and intestinal flora changes.【Result】 Compared with the control group,①There was no significant difference in average daily feed intake,average daily gain and feed-to-weight ratio of the sheep fed with different proportions of fermented hybrid Broussonetia papyrifera(P>0.05).②In femoral muscles of hindlegs,the shear force of EG3 group was significantly reduced (P＜0.05), the cholesterol content in EG2 and EG3 groups decreased significantly (P＜0.05), the crude fat content of the three experimental groups decreased significantly (P＜0.05),while the hydraulic capacity increased significantly (P＜0.05),and there was no significant difference in pH,crude ash,crude protein and amino acid content among three groups (P>0.05). The contents of palmitic acid, oleic acid, linoleic acid and α-linolenic acid in EG1, EG2 and EG3 groups were significantly increased (P＜0.05), and the contents of Ca, Fe, Zn and Se in EG2 and EG3 groups were also increased (P＜0.05). In longissimus dorsi, the shear force,pH,crude fat and cholesterol contents in EG2 and EG3 groups were significantly decreased (P＜0.05),while the crude ash content in EG2 group was significantly decreased (P＜0.05).There was no significant difference in hydraulic power, crude protein and amino acid content among three experimental groups (P>0.05). The contents of palmitic acid, oleic acid, linoleic acid, α-linolenic acid and arachidonic acid, and Ca and Zn contents in EG1, EG2 and EG3 groups increased significantly (P＜0.05). Se content increased significantly in EG2 and EG3 groups, and Fe content increased significantly in EG3 group (P＜0.05).③Intestinal trypsin and lipase activities increased significantly (P＜0.05), while the concentration of total protein in intestine decreased significantly (P＜0.05) in EG2 and EG3 groups.④Adding fermented hybrid Broussonetia papyrifera could significantly improve the diversity and richness of intestinal flora of experimental sheep,increase the relative abundance of probiotics such as Firmicutes,and decrease the relative abundance of harmful bacteria such as Proteobacteria. 【Conclusion】 Adding 24%-32% fermented hybrid Broussonetia papyrifera in the diet could improve the meat quality and digestive enzyme activity of Hu sheep,and improve the richness and diversity of intestinal flora which was conducive to promoting the absorption of nutrients by animals.

Key words: hybrid Broussonetia papyrifera; Hu sheep; growth performance; intestinal flora

CLC Number:

S816.6

ZHANG Huaqiang, WANG Pinsheng, LI Xiao, WEI Panpeng, YAN Lingmin, JIANG Bingbing, WANG Zhaogui, WANG Xuefang, ZENG Huanqing, FAN Yi, GAO Zhenglong, WANG Xuebing. Effects of Fermented Hybrid Broussonetia papyrifera on Growth Performance, Meat Quality,Digestive Enzyme Activity and Intestinal Flora Structure of Hu Sheep[J]. China Animal Husbandry and Veterinary Medicine, 2023, 50(5): 1876-1887.

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Effects of Fermented Hybrid Broussonetia papyrifera on Growth Performance, Meat Quality,Digestive Enzyme Activity and Intestinal Flora Structure of Hu Sheep

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