Korean Journal of Poultry Science (한국가금학회지)

The Korean Society of Poultry Science (한국가금학회)
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Effects of Feeding Betaine on Performance and Blood Hormone in Laying Hens

산란계에 비태인의 급여가 생산 능력과 혈중 호르몬에 미치는 영향

  • Park, J.H. (Department of Animal Resources and Biotechnology, Chonbuk National University) ;
  • Kang, C.W. (Department of Physiology, College of Veterinary Medicine, Chonbuk National University) ;
  • Ryu, K.S. (Department of Animal Resources and Biotechnology, Chonbuk National University)
  • Published : 2006.12.30
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Abstract

An experiment was conducted to investigate the effects of dietary betaine on egg production, estradiol, progesterone, and melatonin secretion in laying hens. Seventy two ISA-Brown laying hens were placed into individual cage and fed four different levels of betaine (0, 300, 600, 1,200 ppm) in diets for four weeks. Basal diets were mainly mixed with corn-soybean and contained 2,800 kcal/kg ME and 16% CP. Dietary supplementation of betaine showed significantly higher (p<0.05) egg weight and daily eggmass than controls, but did not have consistent influence on the egg production. The serum estradiol was statistically different in betaine treatments compared to that of control (p<0.05). No significant changes in serum progesterone concentrations were observed by the addition of betaine in diets. Serum melatonin concentrations also increased with betaine supplementation in diets (p<0.05). The results of this study indicate that the dietary betaine may contribute to increase daily eggmass, serum estradiol and melatonin concentration in laying hens.

이 연구는 산란계 사료에 비태인의 첨가가 산란율, 에스트라다이올, 프로제스테론, 멜라토닌의 분비에 미치는 영향을 구명하고자 실행하였다. 사양 실험은 산란 피크에 도달한 35주령 이사브라운 72수를 개체별 케이지에 배치하여 CP 16%, ME 2,800 kcal/kg의 기초 사료에 비태인을 0, 300, 600, 1,200 ppm 수준으로 첨가하여 4주간 급여하였다. 비태인 첨가구에서 난중과 1일 산란양은 대조구에 비하여 현저하게 증가하였지만(p<0.05), 산란율에서 일관성은 없었다. 혈청의 에스트라다이올은 비태인처리구에서 대조구와 매우 다르게 나타났다(p<0.05). 혈청내 프로제스테론은 처리 구간에 차이가 없었으며, 멜라토닌은 비태인 처리구에서 대조구에 비하여 유의적으로 높게 나타났다(p<0.05). 본 연구 결과 산란계 사료에 비태인의 첨가로 1일 산란양, 난중이 증가하였으며, 혈청내 에스트라다이올과 멜라토닌 함량이 높게 나타났다.

Keywords

References

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