Effects of Multifunctional Complex Microbial Agent Fermented Corn Straw on Energy Metabolism of Fattening Sheep

LI Shuna; HUI Xiaoshuang; LI Hongya; WANG Quan; ZHU Baocheng

doi:10.3969/j.issn.1006-267x.2015.07.030

Chinese Journal of Animal Nutrition >

2015 , Vol. 27 >Issue 7: 2231 - 2240

DOI: https://doi.org/10.3969/j.issn.1006-267x.2015.07.030

Molecular Nutrition

Effects of Multifunctional Complex Microbial Agent Fermented Corn Straw on Energy Metabolism of Fattening Sheep

LI Shuna ,
HUI Xiaoshuang ,
LI Hongya ,
WANG Quan ,
ZHU Baocheng

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1. College of Life Science, Agricultural University of Hebei, Baoding 071000, China;
2. Systems Engineering Society of China, Forage Systems Engineering Professional Committee, Beijing 100020, China

Received date: 2015-01-23

Online published: 2015-07-07

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Abstract

The objective of this paper was to study the effects of multifunctional complex microbial agent fermented corn straw on energy metabolism of fattening sheep. Eighteen Xinji fine-wool sheep with good body condition and similar body weight were randomly divided into 3 groups with 3 replicates and 2 sheep per replicate. The experiment was consisted of 3 periods, and each of them had a pre-test period of 10 d and a test period of 3 d. The roughage in control group was frozen fresh corn straw, and that in test group was 50% fermented corn straw+50% frozen fresh corn straw; sheep in fasting metabolism group were hunger strike for the 3 d of test periods. Digestion metabolism experiment, gas exchange experiment and respiration calorimetry experiment were launched through opening respiratory calorimetry system. The results showed as follows: digestible energy in test group at period 1 was significantly higher than that in control group (P<0.01), and in periods 2 and 3, test group was significantly higher than control group (P<0.05); methane energy and methane energy/gross energy of test group were significantly higher than those in control group at the 3 periods (P<0.01); there was no significant difference on heat production between the two groups (P>0.05); metabolic energy in experimental group was significantly higher than that in control group at the 3 periods (P<0.05); gross energy digestibility in test group at period 1, 2 and 3 increased by 10.33%, 11.52% and 11.86% than control group, respectively, the differences were significant (P<0.05); gross energy metabolic rate in test group at period 1 increased by 11.18% than control group, and the difference was not significant (P>0.05); that at periods 2 and 3 increased by 22.66% and 17.19% than control group, respectively, and the differences were significant (P<0.05); net energy in test group at periods 1, 2, and 3 increased by 64.29%, 108.1% and 84.90% than control group, respectively, and the differences were significant (P<0.05). In conclusion, compared with untreated corn straw, nutrient contents is increased, and the quality is improved in fermented corn straw. The supplementation fermented corn straw in roughage of fattening sheep can increase energy metabolic level, promote energy deposition and utilization, and increase net energy.

Key words： multifunctional complex microbial agent; fermented corn straw; Xinji fine-wool sheep; respiratory metabolism; energy metabolism; fasting metabolism

Cite this article

LI Shuna , HUI Xiaoshuang , LI Hongya , WANG Quan , ZHU Baocheng . Effects of Multifunctional Complex Microbial Agent Fermented Corn Straw on Energy Metabolism of Fattening Sheep[J]. Chinese Journal of Animal Nutrition, 2015 , 27(7) : 2231 -2240 . DOI: 10.3969/j.issn.1006-267x.2015.07.030

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