Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Effect of the Mixed Herbal Medicine for the Substitution of Antibiotics on the Performance of Laying Hens(II) - Part of Laying Period and Egg Quality -

산란계 사육에 있어서 한방 조성물의 항생제 대체 효과(II) - 산란과 계란품질 중심 -

  • Park, Moon-Ki (Department. of Pharmaceutical Eng. Daegu Haany University) ;
  • Kim, Ki-Wook (Busan Feed Factory, Korea Industrial Co.) ;
  • Kwon, Ki-Chan (Department of Resort Development, Daegu Haany University)
  • 박문기 (대구한의대학교 한방제약공학과) ;
  • 김기욱 ((주)고려산업 배합사료공장) ;
  • 권기찬 (대구한의대학교 리조트개발학과)
  • Published : 2008.05.30
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Abstract

The experiment was conducted to determine the effect of the mixed herbal medicine for the substitution of antibiotics on the performance of laying hens. Day old hyline 1,500 layer chicks were randomly assigned to 4 treatments. Control were 600 and three each treatment was 300. Eggs were collected at every weeks for measuring egg production and week 26, 27, 28 for chemical analyses. Chemical analyses were done for fatty acid profile of egg yolks, amino acid, antibiotics residue in eggs(collect eggs after supplying OTC 21ppm/bird/day to control for four day at 26, 27, 28) during the laying period($19{\sim}77wk$). On $0{\sim}4$ week, T-3 showed higher feed intake than those fed the other diets and on $5{\sim}13$ week, T-2 showed highest feed intake among treatments. After birds were moved ($14{\sim}18$ wk) CT-3 showed highest, but for overall rearing period, there was not significantly different among treatments. In conclusion the mixed herbal medicine did not tended to influence palatability to rearing birds. Egg quality(egg yolk color, haugh unit, eggshell breaking strength) showed no difference among treatments. Ratio of unsaturated fatty acid (mg/100g)/saturated fatty acid (mg/100g) was not difference among treatments, but linolenic acid and docosahexaenoic acid(DHA) of the mixed herbal medicine treatments showed higher then control. The antibiotics residue of CT, T treatments egg was not detected and control was not detected or below allowance. In conclusion the mixed herbal medicine can be possible to feed laying hen without antibiotics.

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