Mixed Silage of Potato Pulp and Corn Straw Affects Rumen Environment and Serum Biochemical Parameters of Beef Cattle

WANG Dian; LI Fadi; ZHANG Yangdong; BU Dengpan; SUN Peng; ZHOU Lingyun

doi:10.3969/j.issn.1006-267x.2012.07.022

Chinese Journal of Animal Nutrition >

2012 , Vol. 24 >Issue 7: 1361 - 1367

DOI: https://doi.org/10.3969/j.issn.1006-267x.2012.07.022

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Mixed Silage of Potato Pulp and Corn Straw Affects Rumen Environment and Serum Biochemical Parameters of Beef Cattle

WANG Dian ,
LI Fadi ,
ZHANG Yangdong ,
BU Dengpan ,
SUN Peng ,
ZHOU Lingyun

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1. College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China;
2. State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China

Received date: 2012-02-17

Online published: 2012-07-05

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Abstract

This study was conducted to determine the effects of mixed silage of potato pulp and corn straw on rumen environment and serum biochemical parameters of beef cattle. Four healthy Qinchuan cross beef cattle with an average body weight of (455.00?19.50) kg were randomly assigned in a 4 ? 4 Latin squares design. Four groups included: 1) control group, 40% basal diet+60% yellow corn silage; 2) S25 group, 40% basal diet+45% yellow corn silage+15% mixed silage of potato pulp and corn straw; 3) S50 group, 40% basal diet+30% yellow corn silage+30% mixed silage of potato pulp and corn straw; 4) S75 group, 40%basal diet+15% yellow corn silage+45% mixed silage of potato pulp and corn straw. The results showed that there was no significant difference in ADG, DMI and CP intake among all groups (P>0.05). The ammonia nitrogen concentration was increased by 58.96%, 36.35% and 26.17% in groups S25, S50 and S75 than that in the control group (P>0.05), respectively. No significant differences were observed in concentrations of acetate propionate, butyrate, valerate, volatile fatty acid and percentage of acetate, propionate, butyrate, valerate, and the rations ratios of acetate to propionate and acetate to propionate and butyrate (P>0.05). No significant differences were observed in contents of total protein, urea nitrogen and glucose in serum (P>0.05). In conclusion, the mixed silage of potato pulp and corn straw can increase the ammonia nitrogen concentration in rumen fluids and do not affect the growth performance, volatile fatty acid content and serum biochemical parameters of beef cattle. Therefore, the study suggests that it is feasible when mixed silage of potato pulp and corn straw replaced 75% yellow corn silage in the beef cattle diet.

Key words： potato pulp; beef cattle; rumen environment; serum biochemical parameters

Cite this article

WANG Dian , LI Fadi , ZHANG Yangdong , BU Dengpan , SUN Peng , ZHOU Lingyun . Mixed Silage of Potato Pulp and Corn Straw Affects Rumen Environment and Serum Biochemical Parameters of Beef Cattle[J]. Chinese Journal of Animal Nutrition, 2012 , 24(7) : 1361 -1367 . DOI: 10.3969/j.issn.1006-267x.2012.07.022

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