Effect of Typical Dairy Diets in Northern China on Ruminal Fermentation Characteristics in Vitro

ZHANG Ting; ZHANG Peihua; CHEN Yuguang; ZHOU Xiaoqiao; TIAN Yao; LIU Shijie; ZHANG Kaizhan; BU Dengpan; WILLIAM P. Weiss

doi:10.3969/j.issn.1006-267x.2015.07.033

Chinese Journal of Animal Nutrition >

2015 , Vol. 27 >Issue 7: 2256 - 2263

DOI: https://doi.org/10.3969/j.issn.1006-267x.2015.07.033

Molecular Nutrition

Effect of Typical Dairy Diets in Northern China on Ruminal Fermentation Characteristics in Vitro

ZHANG Ting ,
ZHANG Peihua ,
CHEN Yuguang ,
ZHOU Xiaoqiao ,
TIAN Yao ,
LIU Shijie ,
ZHANG Kaizhan ,
BU Dengpan ,
WILLIAM P. Weiss

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1. State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
2. College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China;
3. China Feed Industry Association, Beijing 100125, China;
4. Beijing Sino Farm Ltd., Co., Beijing 100028, China;
5. Synergetic Innovation Center of Food Safety and Nutrition, Northeast Agriculture University, Harbin 150030, China;
6. CAAS-ICRAF Joint Laboratory on Agroforestry and Sustainable Animal Husbandry, Beijing 100193, China;
7. Department of Animal Sciences, Ohio Agricultural Research and Development Center, The Ohio State University, Wooster 44691, USA

Received date: 2015-01-29

Online published: 2015-07-07

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Abstract

In vitro gas production method was performed to examine the effects of 3 typical dairy diets in northern China on ruminal fermentation characteristics in vitro. Alfalfa, corn silage and corn stover as main raw materials were used to make up 3 diets of different farming modes with the same concentrate/roughage. Diet in MF group was analog to that of large-scale farm, and the roughage was corn silage and alfalfa; diet in CSA group was analog to that of dairy plot, the roughage was corn stover; diet in CSB group was analog to that of dairy scatter breeding, the roughage was the same with CSA group, while soybean and soybean meal were replaced by mixed meal (rapeseed meal, cottonseed meal and sugar beet pulp). In vitro gas production incubated 48 h combined with the technique of real time recording of gas production were used to determine 48 h cumulative gas production, fermentation kinetic parameters and fermentation characteristic indexes.The results showed as follows: in vitro dry matter degradability was significantly higher in MF group than in CSA group (P<0.05), and CSA group was significantly higher than CSB group (P<0.05); 48 h cumulative gas production in MF and CSA groups was not significantly different (P<0.05), and was significantly higher than that in CSB group (P<0.05); the concentrations of total volatile fatty acids and ammonia nitrogen were not significantly different among all groups (P<0.05), and microbial protein concentration tended to be lower in CSB group than in MF and CSA groups (P>0.05). Thus, corn stover used as roughage source instead of alfalfa and corn silage can decrease in vitro dry matter degradability; mixed meal used as protein source instead of soybean and soybean meal can improve 48 h accumulative gas production and in vitro dry matter degradability, but can not affect other ruminal fermentation parameters.

Key words： roughage source; microbial protein; gas production; in vitro ruminal fermenation

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ZHANG Ting , ZHANG Peihua , CHEN Yuguang , ZHOU Xiaoqiao , TIAN Yao , LIU Shijie , ZHANG Kaizhan , BU Dengpan , WILLIAM P. Weiss . Effect of Typical Dairy Diets in Northern China on Ruminal Fermentation Characteristics in Vitro[J]. Chinese Journal of Animal Nutrition, 2015 , 27(7) : 2256 -2263 . DOI: 10.3969/j.issn.1006-267x.2015.07.033

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