›› 2009, Vol. 36 ›› Issue (12): 20-22.

• 动物营养与饲料科学 • Previous Articles     Next Articles

Feasibility Research on Reducing Dietary Protein Levels of Growing-finishing Pigs in Northern Cold Season of China

WU Jing1,2,3, ZHAO Ke-bin2, WANG Li-xian2, YAN Hua2, ZHAO Heng-Shou1, CHENG Du-xue2, CAI Chuan-jiang1,2, LIU Xin2   

  1. (1.Shanxi Agricultural University, Taigu 030801, China;2.Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China;3.Animal Husbandry and Veterinary Office of Jincheng City, Jincheng 048000, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-12-20 Published:2009-12-20
  • Contact: WANG Li-xian

Abstract: In this trial,a total of 147 large white pigs of average body weight 35 kg were randomly divided into three groups. The control group fed corn-soybean basal diet with crude protein level of 16.4%(35 to 60 kg) and 13.9%(60 to 100 kg),low protein I group were supplemented crude protein level of 15.4%(35 to 60 kg) and 13.0%(60 to 100 kg), and low protein Ⅱ group were supplemented crude protein level of 14.3%(35 to 60 kg) and 11.6%(60 to 100 kg).The average temperature of the pigpen was 16 ℃. The results showed that reducing 6% of dietary protein had no significant effects on daily gain,feed conversion,backfat and feed cost of gain at the present pigpen temperature（P>0.05）. So, considering the other beneficial effects of reducing protein feed consumption and harmful gas emissions, and the beneficial effect on environment in pigpen without heating in winter，reducing 6% of dietary protein is feasible in growing-finishing pigs raising.

Key words: crude protein level; growing-finishing pigs; pigpen temperature

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