Earticle

초록

영어

This study was conducted to investigate the effect of dietary sericite(SC) on laying performance, feed conversion ratio, egg quality and fecal ammonium nitrogen. Three hundreds and sixty 92-wk-old, Lohman Lite layers were randomly divided into 20 groups of 18 birds each and assigned to five experiment for 4 weeks (72 birds per treatment). Dietary treatments were Control (control diet), SC 0.5 (control diet +0.5% sericite), SC 1.0 (control diet +1.0% sericite), SC 1.5 (control diet +1.5% sericite), and SC 2.0 (control diet +2.0% sericite). Hen-day egg production tended to increase by the SC 1.0%, SC 1.5% and SC 2.0% supplementation in the diets. Egg weight also tended to increase by the SC 1.0% addition in the diets. Feed intake was increased (p<0.05) in SC 1.5 and SC 2.0 but feed conversion was improved (p<0.05) only in SC 1.0 (p<0.05). Digestibility of nutrients were not linearly affected by dietary supplementation of sericite although there was an inconsistent difference. Egg shell strength, albumin height, yolk color, and egg shell thickness were not affected (p<0.05) by treatments. Fecal NH3-N concentration was decreased (p<0.05) by dietary sericite supplementation compared to control. This study showed that dietary 1.0% sericite supplementation can be beneficial to improve egg production, egg weight and feed conversion and to decrease fecal NH3-N concentration.

목차

ABSTRACT
 I. 서론
 II. 재료 및 방법
  1. 시험 동물 및 설계
  2. 산란율 및 평균난중
  3. 사료섭취량 및 사료요구율
  4. 영양소 소화율
  5. 난의 품질
  6. 분내 NH3-N 농도 측정
  7. 통계분석
 III. 결과 및 고찰
  1. 산란율과 평균난중
  2. 사료섭취량과 사료요구율
  3. 영양소 소화율
  4. 계란의 품질
  5. 분내 NH3-N 농도
 IV. 요약
 V. 인용문헌

저자

• 이명호 [ Myeong Ho Lee | 강원대학교 동물생명과학대학 ]
• 이준엽 [ Jun Yeob Lee | 강원대학교 동물생명과학대학 ]
• 윤석민 [ Seok Min Yun | 강원대학교 동물생명과학대학 ]
• 케오하봉 [ Bounmy Keohavong | 강원대학교 동물생명과학대학 ]
• 카잉민 [ Kay Kaing Mean | 강원대학교 동물생명과학대학 ]
• 이시정 [ Si Jeong Lee | 강원대학교 동물생명과학대학 ]
• 오상집 [ Sang Jip Ohh | 강원대학교 동물생명과학대학 ] Corresponding Author

참고문헌