Poultry Nutrition

Effects of Copper on Growth Performance, Slaughter Performance, Nutrient Availability and Serum Hormone Content of Wulong Geese Aged 5 to 16 Weeks

  • XU Chenchen ,
  • WANG Baowei ,
  • GE Wenhua ,
  • ZHANG Ming ,
  • YUE Bin ,
  • SHI Xueping
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  • Institute of High Quality Waterfowl, Qingdao Agricultural University, Qingdao 266109, China

Received date: 2013-03-01

  Online published: 2013-08-18

Abstract

This experiment was conducted to study the effects of dietary copper supplemental level on growth performance, slaughter performance, nutrient availability and serum hormone content of Wulong geese aged 5 to 16 weeks, and to find the appropriate supplemental level of the copper. A total of 324 5-week-old Wulong geese were randomly divided into 6 groups with 6 replicates per group and 9 geese per replicate. Geese in the group Ⅰ (control group) were fed a basal diet, and geese in the experimental groups (groups Ⅱ to Ⅵ) were fed the basal diet supplemented with 15, 30, 60, 120 and 240 mg/kg copper, respectively. The experiment lasted for 12 weeks. The results showed as follows: 1) using unrelated comparative analysis method, compared with the control group, when the dietary copper level was 21.80 mg/kg, the average daily gain reached the highest; when the dietary copper level was 16.25 mg/kg, the feed to gain reached the lowest. 2)Growth hormone, insulin, free iodine thyroid three original acid and free thyroxin had significant correlation with the growth performance and nutrient availability of geese aged 5 to 16 weeks (P<0.05 or P<0.01). In conclusion, 1) derived from the curve equation, the optimal supplemental level of copper for the growth performance of Wulong geese aged 5 to 16 weeks is 16.25 mg/kg. 2) Adding 30 mg/kg copper can significantly increase the availability of metabolic energy, crude protein, ether extract, phosphonium, crude fiber and acid detergent fiber of geese. 3) Dietary cooper supplemental level has a significant effect on hormone secretion of the body, and has the most effect on growth hormone.

Cite this article

XU Chenchen , WANG Baowei , GE Wenhua , ZHANG Ming , YUE Bin , SHI Xueping . Effects of Copper on Growth Performance, Slaughter Performance, Nutrient Availability and Serum Hormone Content of Wulong Geese Aged 5 to 16 Weeks[J]. Chinese Journal of Animal Nutrition, 2013 , 25(9) : 1989 -1997 . DOI: 10.3969/j.issn.1006-267x.2013.09.010

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