Effects of Milk Replacer on Growth Performance and Rumen Microflora in Early Weaning Yimeng Black Lambs

LI Yongzhu; HAN Zhaoqing; JIN Taihua; XIA Chunfeng; CHAO Hongyu; ZHANG Naifeng; WANG Shiqin; DIAO Qiyu

doi:10.3969/j.issn.1006-267x.2019.08.021

Chinese Journal of Animal Nutrition >

2019 , Vol. 31 >Issue 8: 3600 - 3611

DOI: https://doi.org/10.3969/j.issn.1006-267x.2019.08.021

Effects of Milk Replacer on Growth Performance and Rumen Microflora in Early Weaning Yimeng Black Lambs

LI Yongzhu ,
HAN Zhaoqing ,
JIN Taihua ,
XIA Chunfeng ,
CHAO Hongyu ,
ZHANG Naifeng ,
WANG Shiqin ,
DIAO Qiyu

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1. Feed Research Institute of Chinese Academy of Agricultural Sciences, Key Laboratory of Feed Biotechnology of the Ministry of Agriculture, Beijing 100081, China;
2. College of Agriculture and Forestry Science, Linyi University, Linyi 276000, China

Received date: 2019-01-29

Online published: 2019-08-19

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Abstract

The present study was carried out to explore the effects of milk replacer on the growth performance and rumen microbiota in early weaning Yimeng black lambs. A total of 36 Yimeng black twin lambs were divided into two groups with 18 lambs in each group by a single factor design. The lambs in control group (group B) was fed breast milk, while lambs in experimental group (group R) were fed milk replacer from 10 days of age, and the experiment lasted for 75 d ays. The live weight of three lambs were measured and rumen content was collected from each group on 10, 15, 25, 45 and 75 days of age, respectively; composition of rumen bacteria was analyzed by Illumina sequencing technique. The results showed that the body weight of lambs in group R was obviously lower than that in group B on 15 days of age (P<0.01), however, the body weight of lambs in group R was prominently higher than that in group B on 75 days of age (P<0.05). The Alpha and Beta diversities in group R had significant differences compared with group B on 15 days of age (P<0.05). At the phylum level, the relative abundance of Firmicutes in group R was lower than that in group B on 25, 45 and 75 days of age, and the difference on 25 days of age was significant (P<0.05), while the relative abundance of Bacteroidetes was significantly higher than that in group R on 25, 45 and 75 days of age, respectively (P<0.05), the relative abundance of Proteobacteria was also obviously lower than that in group B on 25, 45 and 75 days of age, respectively (P<0.05). At the genus level, the Prevotella in group R was dominant fungi, the relative abundance of it was higher than that in group B on 15 days of age (P>0.05), and it was significantly higher than that in group B on 75 days of age (P<0.05); the relative abundance of Bacteroides and Alloprevotella was higher than that in group B on 25 days of age (P>0.05). Compared with group B, the relative abundance of Eschericla-shigella was decreased from 15 to 25 days of age, and was lower than that in group B after 25 days of age (P>0.05). In conclusion, feeding milk replacer can affect body weight gain of lambs, and has the same gain effect as breastfeeding after 45 days of age; feeding milk replacer can significantly affect rumen microflora change after 25 days of age, the Prevotella is dominant fungi, and the relative abundance of Prevotella increases gradually, which can improve the structure of rumen microflora and promote the growth of lambs

Key words： milk replacer; rumen microflora; growth and development; Yimeng black lambs

Cite this article

LI Yongzhu , HAN Zhaoqing , JIN Taihua , XIA Chunfeng , CHAO Hongyu , ZHANG Naifeng , WANG Shiqin , DIAO Qiyu . Effects of Milk Replacer on Growth Performance and Rumen Microflora in Early Weaning Yimeng Black Lambs[J]. Chinese Journal of Animal Nutrition, 2019 , 31(8) : 3600 -3611 . DOI: 10.3969/j.issn.1006-267x.2019.08.021

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