Effects of Pennisetum sp. Supplied in Diet on Ruminal Fermentation and Performance of Dairy Cows

MA Jian; LIU Yanfang; WANG Yajing; CAO Zhijun; LI Shengli; YU Xiong; YANG Ji; LEI Xiaoying; MA Yabin

doi:10.3969/j.issn.1006-267x.2015.11.014

Chinese Journal of Animal Nutrition >

2015 , Vol. 27 >Issue 11: 3429 - 3437

DOI: https://doi.org/10.3969/j.issn.1006-267x.2015.11.014

RUMINANT NUTRITION

Effects of Pennisetum sp. Supplied in Diet on Ruminal Fermentation and Performance of Dairy Cows

MA Jian ,
LIU Yanfang ,
WANG Yajing ,
CAO Zhijun ,
LI Shengli ,
YU Xiong ,
YANG Ji ,
LEI Xiaoying ,
MA Yabin

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1. College of Animal Science and Technology, Xinjiang Agricultural University, Urumqi 830052, China;
2. College of Animal Science and Technology, China Agricultural University, Beijing 100193, China;
3. Beijing Yongrun Guonong Eco-Agriculture Technology Co., Ltd., Beijing 100080, China;
4. Hebei Jinzhou Zhoujiazhuang Agriculture and Animal Husbandry Co., Ltd., Shijiazhuang 052262, China;
5. Hebei Livestock Breeding Station, Shijiazhuang 050061, China

Received date: 2015-05-20

Online published: 2015-11-21

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Abstract

This experiment was conducted to investigate the effects of dietary supplementation of Pennisetum sp. silage and Pennisetum sp. hay on ruminal fermentation, nutrient digestibility and performance of dairy cows. Forty-five healthy Chinese Holstein lactating dairy cows were randomly assigned into 3 groups with 15 cows in each group by milk yield, parity and days in milk. Roughages in control group (CG) were whole corn silage, Chinese wildrye and alfalfa hay, those in trial group Ⅰ were Pennisetum sp. silage, whole corn silage, Chinese wildrye and alfalfa hay, and those in trial group Ⅱ were Pennisetum sp. hay, whole corn silage and alfalfa hay. Nutrient levels of the three diets were close. The pre-trial lasted for 10 days, and the trial lasted for 60 d. The results showed as follows:1) compared with CG, the content of ammonia nitrogen of acetate in rumen fluid, and milk protein percentage in trial group Ⅰ were significantly increased (P<0.05). The other milk composition, dry matter intake, milk yield and nutrient digestibility had no significant differences (P>0.05). The benefit per cow per day improved 1.19 yuan. 2) Compared with CG, the milk composition and nutrient digestibility in trial group Ⅱ were not significantly changed (P>0.05), and the content of ammonia nitrogen in rumen fluid was significantly decreased (P<0.05). The dry matter intake and milk was slightly increased (P>0.05). The benefit per cow per day improved 2.07 yuan. It is concluded that partial replacement of whole corn silage with Pennisetum sp. silage and partial replacement of alfalfa hay with Pennisetum sp. hay in diets can bring in better economic benefit without influencing cows' performance.

Key words： Pennisetum sp.; Holstein dairy cows; ruminal fermentation; digestibility; performance

Cite this article

MA Jian , LIU Yanfang , WANG Yajing , CAO Zhijun , LI Shengli , YU Xiong , YANG Ji , LEI Xiaoying , MA Yabin . Effects of Pennisetum sp. Supplied in Diet on Ruminal Fermentation and Performance of Dairy Cows[J]. Chinese Journal of Animal Nutrition, 2015 , 27(11) : 3429 -3437 . DOI: 10.3969/j.issn.1006-267x.2015.11.014

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