Effects of Allium monogolium Regel and Its Extracts on Rumen Fermentation and Microflora of Sheep

ZHAO Yaxing, AO Changjin, BAO Zhibi, FAN Zejun, DU Hongxi, LIU Wangjing, DING He, CHEN Hao

doi:10.3969/j.issn.1006-267x.2019.05.038

Chinese Journal of Animal Nutrition >

2019 , Vol. 31 >Issue 5: 2313 - 2322

DOI: https://doi.org/10.3969/j.issn.1006-267x.2019.05.038

Molecular Nutrition

Effects of Allium monogolium Regel and Its Extracts on Rumen Fermentation and Microflora of Sheep

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College of Animal Science, Inner Mongolia Agriculture University, Hohhot 010018, China

Received date: 2018-11-07

Online published: 2019-05-15

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Abstract

The purpose of this experiment was to study the effects of the Allium monogolium Regel (AMR), water-soluble extracts (AWE) and fat-soluble extracts (AFE) of AMR on rumen fermentation and rumen microflora of sheep. Twelve Dorper×thin-tailed Han crossbred with body weight of (37.1±0.5) kg were randomly divided into 4 groups with 1 repetition per group. The control (CON) group was fed a basal diet, the AMR group was fed diets supplemented with AMR (10 g/d per sheep), the AFE group was fed diets supplemented with AFE (2.8 g/d per sheep), the AWE group was fed diets supplemented with AWE (3.4 g/d per sheep). The feeding test lasted 75 d including a 15-day pre-test period and a 60-day formal period. Rumen fermentation parameters and rumen microbial content were measured by oral rumen fluid collection after feeding 2 h later on the days 0, 30 and 60 of the feeding period. The results showed as follows: 1) compared with the CON group, on day 60, dietary AMR and its extracts significantly increased the pH of the rumen fluid (P<0.05), and decreased the concentration of ammonia nitrogen in the rumen fluid (P > 0.05); the addition of AMR in the diet significantly increased the concentration of mycoprotein in the rumen fluid (P<0.05). 2) Compared with the CON group, on day 60, the addition of AMR and AFE in the diet significantly increased the concentration of propionic acid in the rumen fluid (P<0.05), the addition of AMR in the diet significantly increased the concentration of butyric acid in the rumen fluid (P<0.05) and significantly decreased the concentration of isobutyric acid (P<0.05), the differences in the concentrations of acetic acid, valeric acid and isovaleric acid were not significant among groups (P>0.05). 3) Compared with the CON group, on days 30 and 60, dietary AMR and its extracts significantly increased the contents of Ruminococcus succinogenes and Ruminococcus flavefaciens in the rumen fluid (P<0.05) and had no significant effect on the contents of Butyrivibrio fibrisolvens, methanogen and Ruminococcus albus (P > 0.05); on day 60, dietary AWE significantly increased the fungi content in the rumen fluid (P<0.05); dietary AWE significantly decreased the content of protozoa in the rumen fluid (P<0.05). In summary, dietary AMR and its extract improve the rumen fermentation mode and the rumen microflora of sheep.

Key words： Allium monogolium Regel; Allium monogolium Regel extract; sheep; rumen fermentation; rumen microflora

Cite this article

ZHAO Yaxing, AO Changjin, BAO Zhibi, FAN Zejun, DU Hongxi, LIU Wangjing, DING He, CHEN Hao . Effects of Allium monogolium Regel and Its Extracts on Rumen Fermentation and Microflora of Sheep[J]. Chinese Journal of Animal Nutrition, 2019 , 31(5) : 2313 -2322 . DOI: 10.3969/j.issn.1006-267x.2019.05.038

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