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DOI: https://doi.org/10.5713/ajas.17.0847    [Accepted] Published online January 26, 2018.
Effect of Broussonetia papyrifera L. (paper mulberry) silage on dry matter intake, milk composition, antioxidant capacity and milk fatty acid profile in dairy cows
Bingwen Si1,4, Hui Tao1, Xiaoli Zhang2, Jiangpeng Guo3, Kai Cui1, Yan Tu1, Qi-Yu Diao1,*
1Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
2Beijing Plant Protection Station, Beijing, China
3Beijing animal husbandry station, Beijing, China
4National Engineering Research Center of Biological Feed, Beijing 10081, China
Correspondence:  Qi-Yu Diao, Tel: (86)01062169105, Fax: (86)01062169105, Email: diaoqiyu@caas.cn
Received: 20 November 2017   • Revised: 18 December 2017   • Accepted: 26 January 2018
Abstract
This study was carried out to investigate the possible application of B. papyrifera silage as a functional feeding stuff in the dairy cattle. 72 Holstein cows were divided into four groups randomly and allocated in 6 pens with 3 individuals in each group, and fed on the original TMR in the dairy farm or the new TMR with 5%, 10% and 15% B. papyrifera silage, separately. Dry matter intake of cows decreased when they fed on diet with B. papyrifera, but no differences were observed in body condition score, milk yield, milk protein and lactose, feed efficiency and serum metabolites between groups. 10% or 15% of B. papyrifera silage in the diet increased significantly the IgA and IgG in serum, 15% of B. papyrifera silage increased the content of serum catalase, superoxide dismutase, total antioxidant capacity, and declined the content of 8-OHdG. Furthermore, 10% or 15% of B. papyrifera silage resulted in a significant decline in the milk somatic cell count, and increased the polyunsaturated fatty acids content in the milk. In conclusion, 10-15% of B. papyrifera silage in the diet might enhance the immune and antioxidant function of dairy cows and increase the PUFA concentration in the milk.
Keywords: Broussonetia papyrifera silage; immune function; antioxidant capacity; milk; dairy cows
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