Effects of Different Dietary Protein Sources on Energy and Nitrogen Metabolism and Methane Emission of Beef Cattle

ZHANG Xiaoming; WANG Zhisheng; TANG Chunmei; CHEN Hui; CHEN Yan; ZOU Huawei; PENG Quanhui

doi:10.3969/j.issn.1006-267x.2014.07.015

Chinese Journal of Animal Nutrition >

2014 , Vol. 26 >Issue 7: 1830 - 1837

DOI: https://doi.org/10.3969/j.issn.1006-267x.2014.07.015

Ruminant Nutrition

Effects of Different Dietary Protein Sources on Energy and Nitrogen Metabolism and Methane Emission of Beef Cattle

ZHANG Xiaoming ,
WANG Zhisheng ,
TANG Chunmei ,
CHEN Hui ,
CHEN Yan ,
ZOU Huawei ,
PENG Quanhui

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Animal Nutrition Institute, Sichuan Agricultural University, Ya'an 625014, China

Received date: 2014-02-13

Online published: 2014-07-01

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Abstract

This study was conducted to study the effects of different dietary protein sources on energy and nitrogen metabolism and methane emission of beef cattle. Three healthy Xuanhan Yellow cattle with similar body weight fitted with permanent ruminal cannulas were used in a 3×3 complete Latin square design. Soybean meal, rapeseed meal and cottonseed meal were used as protein sources to prepare experimental diets; the experiment was consisted of 3 periods with 20 days in each period (pre-experimental period: 10 days; digestion experiment: 3 days; breath metabolism experiment: 7 days). The results showed as follows: 1) total volatile fatty acid concentration in experimental groups was not significantly different (P>0.05); acetate concentration in soybean meal and rapeseed meal groups was significantly higher than that in cottonseed meal group (Prapeseed meal group>cottonseed meal group; NH₃-N content in three groups was significantly different (Prapeseed meal group > cottonseed meal group. 2) Nitrogen intake, fecal nitrogen, digestible nitrogen and nitrogen digestibility in three groups were not significant different (P>0.05); urinary nitrogen in soybean meal and cottonseed meal groups was significantly higher than that in rapeseed meal group (Pcottonseed group meal>rapeseed meal group; net energy for gain (NEg), NEg/gross energy, NEg/digestive energy and NEg/metabolizable energy in soybean meal group were significantly lower than those in rapeseed meal and cottonseed meal groups (Prapeseed meal group>cottonseed group meal. It is concluded that nitrogen biological value of the diet with rapeseed meal as the protein source is the highest, that with soybean meal is lower, and that with cottonseed meal is the lowest; NEg of the diet with cottonseed meal as the protein source is the highest, that with rapeseed meal is lower, and that with soybean meal is the lowest; methane emission of the diet with soybean meal as protein source is the highest, that with rapeseed meal is lower, and that with cottonseed meal is the lowest.

Key words： different dietary protein sources; beef cattle; energy; nitrogen; methane emissions

Cite this article

ZHANG Xiaoming , WANG Zhisheng , TANG Chunmei , CHEN Hui , CHEN Yan , ZOU Huawei , PENG Quanhui . Effects of Different Dietary Protein Sources on Energy and Nitrogen Metabolism and Methane Emission of Beef Cattle[J]. Chinese Journal of Animal Nutrition, 2014 , 26(7) : 1830 -1837 . DOI: 10.3969/j.issn.1006-267x.2014.07.015

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