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Acta Prataculturae Sinica ›› 2018, Vol. 27 ›› Issue (9): 201-209.DOI: 10.11686/cyxb2017417

• Orignal Article • Previous Articles    

Effects of whole-plant corn silage on performance, digestibility and blood biochemical parameters in Simmental crossbred bulls

SUN Xue-li1, LI Qiu-feng1, *, LIU Ying-cai2, CAO Yu-feng1, WANG Zeng-lin1, LI Yi1, ZHAO Yang-yang1, GE Han-cong1, LIU Tao-tao1, ZHAO Li-xin3   

  1. 1.College of Animal Science and Technology, Agricultural University of Hebei, Baoding 071000, China;
    2.Agricultural and Animal Husbandry Bureau, Longhua Grassland Supervision Stations in Chengde, Chengde 068150, China;
    3.Longhua Yijia Aquaculture Ltd, Chengde 068150, China
  • Received:2017-10-09 Revised:2018-02-01 Online:2018-09-20 Published:2018-09-20

Abstract: In this experiment, 45 healthy Simmental hybrid bulls weighing approximately 350 kg were randomly divided into three treatment groups that were fed different diets for a period of 140 d: GroupⅠ(concentrate +corn straw storage), Group Ⅱ (concentrate+whole-plant corn silage) and Group Ⅲ (concentrate+whole-plant corn silage+lactic acid bacteria compound preparation). The results showed that Group Ⅲ’s average daily gain was significantly higher than both Groups Ⅰ and Ⅱ (P<0.01). The daily gain of Group Ⅲ was 90.35% and 24.00% higher than Groups Ⅰ and Ⅱ respectively. The dry matter intake of Group Ⅰ was significantly higher than Groups Ⅱ and Ⅲ (P<0.01), while there were no significant differences between Groups Ⅱ and Ⅲ. The feed:gain ratio of Groups Ⅱ and Ⅲ were significantly lower than Group Ⅰ (P<0.01). The digestibility of crude protein (Measurement using the FOSS Automated Protein Analyzer (USA)[1])for Groups Ⅱ and Ⅲ was higher than Group Ⅰ (P<0.05), and especially so in the case of Group Ⅲ (P<0.01). The apparent digestibility of neutral detergent fiber and acid detergent fiber in Group Ⅲ were significantly higher than Group Ⅰ (P<0.05). The content of free fatty acids and leptin in Group Ⅰ were significantly higher than Groups Ⅱ and Ⅲ (P<0.05).The levels of bovine insulin-like growth factor in Groups Ⅱ and Ⅲ were significantly higher than Group Ⅰ(P<0.05) and there was also a significant difference between Groups Ⅱ and Ⅲ (P<0.05). The average daily benefit of Group Ⅲ was 22.21 yuan and 9.27 yuan higher than that of Groups Ⅰ and Ⅱ respectively. In conclusion, this experiment showed that, in terms of fattening effects and economic benefits, cattle diets with additive whole corn silage outperformed the other two treatments studied.

Key words: beef cattle, corn stalk yellow storage, whole plant silage corn, blood biochemical index, apparent digestibility, growth performance, economic benefit