FEED SCIENCE AND TECHNOLOGY

Effects of Bacillus subtilis Cooperate with Copper on Growth Performance, Slaughter Performance, Nutrient Availability and Meat Quality of Wulong Geese Aged from 5 to 16 Weeks

  • ZHANG Zenan ,
  • WANG Baowei ,
  • GE Wenhua ,
  • ZHANG Ming ,
  • YUE Bin ,
  • ZHENG Huiwen ,
  • ZHANG Yangyang
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  • Nutrition and Feed Laboratory of China Agriculture Research System, Institute of High Quality Waterfowl, Qingdao Agricultural University, Qingdao 266109, China

Received date: 2016-03-15

  Online published: 2016-09-08

Abstract

This experiment was conducted to study the effects of Bacillus subtilis cooperate with copper on growth performance, slaughter performance, nutrient availability and meat quality of Wulong geese aged from 5 to 16 weeks, and to find a method to reduced dietary copper supplemental level. A total of 360 five-week-old Wulong geese were randomly divided into 6 groups with 6 replicates per group and 10 geese per replicate (half male and half female). Geese in the group Ⅰ (control group) were fed an optimal supplemental level of copper (copper supplemental level was 16 mg/kg, without Bacillus subtilis); and geese in groups Ⅱ to Ⅵ were fed Bacillus subtilis (250 g/t), and were fed the diets supplemented with 0, 4, 8, 12, 16 mg/kg copper, respectively. The experiment lasted for 12 weeks. The results showed as follows: 1) in the Bacillus subtilis supplemental groups, when dietary copper supplemental level was 8 mg/kg, the average daily gain and feed to gain ratio reached the best. 2) The dressed percentage and percentage of half-eviscerated yield in groups Ⅳ, Ⅴ and Ⅵ were significantly higher than those in group Ⅰ (P<0.05 or P<0.01). 3) The crude protein availability in group Ⅳ was significantly higher than that in group Ⅰ (P<0.05), the crude fiber availability, acid detergent fiber availability and copper apparent digestibility in groups Ⅳ, Ⅴ and Ⅵ were significantly higher than those in group Ⅰ (P<0.05 or P<0.01). 4) The deposited nitrogen and availability of nitrogen in group Ⅳ were significantly higher than those in group Ⅰ (P<0.05 or P<0.01), and the nitrogen from excrement was significantly lower than that in group Ⅰ (P<0.05). In conclusion, added Bacillus subtilis to diet can promote the availability of copper, reduce the dietary supplemental level of copper, promote growth performance, slaughter performance and nutrient availability. The optimal supplemental level of Bacillus subtilis is 250 g/t and the level of copper is 8 mg/kg.

Cite this article

ZHANG Zenan , WANG Baowei , GE Wenhua , ZHANG Ming , YUE Bin , ZHENG Huiwen , ZHANG Yangyang . Effects of Bacillus subtilis Cooperate with Copper on Growth Performance, Slaughter Performance, Nutrient Availability and Meat Quality of Wulong Geese Aged from 5 to 16 Weeks[J]. Chinese Journal of Animal Nutrition, 2016 , 28(9) : 2830 -2838 . DOI: 10.3969/j.issn.1006-267x.2016.09.022

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