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Effects of Dietary Supplementation of Copper-Sulfate and Copper-Soy Proteinate on the Performance and Small Intestinal Microflora in Laying Hens

Copper-Sulfate와 Copper-Soy Proteinate 첨가가 산란계의 생산성과 장내 미생물 균총에 미치는 영향

  • Kim, Chan Ho (Poultry Science Division, Livestock Resource Development, National Institute of Animal Science, RDA) ;
  • Kang, Hwan Ku (Poultry Science Division, Livestock Resource Development, National Institute of Animal Science, RDA) ;
  • Bang, Han Tae (Poultry Science Division, Livestock Resource Development, National Institute of Animal Science, RDA) ;
  • Kim, Ji Hyuk (Poultry Science Division, Livestock Resource Development, National Institute of Animal Science, RDA) ;
  • Hwangbo, Jong (Poultry Science Division, Livestock Resource Development, National Institute of Animal Science, RDA) ;
  • Choi, Hee Cheol (Poultry Science Division, Livestock Resource Development, National Institute of Animal Science, RDA) ;
  • Paik, In Kee (Department of Animal Science and Technology, Chung-Ang University) ;
  • Moon, Hong Kil (Poultry Science Division, Livestock Resource Development, National Institute of Animal Science, RDA)
  • Received : 2014.09.22
  • Accepted : 2014.11.14
  • Published : 2014.12.31

Abstract

The objective of this experimental was to investigate the effect of dietary Cu-sulfate and Cu-soy proteinate on productive performance and small intestinal microflora. A total 1,000 Hy-Line Brown laying hens (35 weeks old) were randomly allotted to 1 of 5 dietary treatments: Control, Cu-sulfate 50, 100 (50, 100 ppm Cu supplementation as Cu-sulfate) and Cu-SP 50, 100 (50, 100 ppm Cu supplementation as Cu-soy proteinate). Each treatment was replicated 4 times with fifty birds per replication, housed in 2 birds cages. Fifty birds units were arranged according to randomized block design. Feeding trial lasted 5 weeks under 16L : 8D lighting regimen. Hen day egg production was significantly (P<0.05) higher in Cu treated groups than control. Feed intake, broken and shell-less egg production was not significantly influenced by treatment. Eggshell color, eggyolk color, haugh unit, and eggshell thickness were not significantly influenced by treatment. However, eggshell strength was significantly (P<0.05) greater in Cu treated groups than control. Concentration of copper of liver was significantly (P<0.05) greater in Cu treated groups than control. Concentration of zinc and iron of liver were not influenced by treatments. Population of Cl. perfrigens and Lactobacilli in the small intestinal content were significantly (P<0.05) influenced by treatments. Population of Cl. perfrigens decreased and that of Lactobacilli increased in the Cu supplement groups. In conclusion, dietary Cu sulfate and Cu-soy proteinate similarly improves egg production, eggshell strength, and favors intestinal microbial population of laying hens.

Acknowledgement

Supported by : 국립축산과학원

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