한국가금학회지 (Korean Journal of Poultry Science)

  • 제38권3호
  • /
  • Pages.205-211
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  • 2011
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  • 1225-6625(pISSN)
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  • 2287-5387(eISSN)
한국가금학회 (The Korean Society of Poultry Science)
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밀기울 위주의 환우용 사료가 산란계의 환우 후 생산성에 미치는 영향

Effect of the Induced Molting with Wheat Bran on the Postmolt Performance of Laying Hens

  • 황보종 (농촌진흥청 국립축산과학원) ;
  • 홍의철 (농촌진흥청 국립축산과학원) ;
  • 강보석 (농촌진흥청 국립축산과학원) ;
  • 김학규 (농촌진흥청 국립축산과학원) ;
  • 허강녕 (농촌진흥청 국립축산과학원) ;
  • 추효준 (농촌진흥청 국립축산과학원) ;
  • 나재천 (농촌진흥청 국립축산과학원) ;
  • 최양호 (경상대학교 동물자원과학부) ;
  • 김원 ((주)밀테크)
  • 투고 : 2011.08.02
  • 심사 : 2011.09.07
  • 발행 : 2011.09.30
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초록

본 시험은 밀기울 위주의 환우용 사료로 유도환우한 경우 산란계의 생산성에 미치는 영향을 구명하고자 실시하였다. 공시계는 65주령 White Leghorn 산란계 200수를 이용하였다. 처리구는 환우를 하지 않는 비환우 대조구(CO), 절식 환우구(FW), 기존 환우 사료 급이구(UM), 옥수수-밀기울 위주의 환우 사료 급이구(CW), 밀기울 위주의 환우 사료 급이구(WM)의 총 5처리구, 처리구당 4반복, 반복당 10수씩 완전임의 배치하였다. 환우 개시 전에는 모든 처리구에서 섭취량이 유사하였으나(P>0.05), 1주째 환우용 사료 급이구에서는 섭취량이 감소하였으나(P<0.05), 3주째 이후로는 모든 처리구에서 사료 섭취량에 유의적 차이가 없었다(P>0.05). FW구의 시험계들은 1주째 1,337 g으로 초기 체중에서 18.6%의 체중 손실이 있었으며, UM, CW, WM구에서는 체중 손실이 11.4, 14.2, 17.4%로 나타났다(P<0.05). 1주령에 환우 처리구에서 산란율이 급격히 감소하였으며, FW구에서는 1주째, UM, CW, WM구에서는 2주째에 산란이 급격하게 감소하였으며, FW구에서는 2주째에 산란이 정지되었다. 산란 회복 기간을 보면 FW구는 3주째 산란이 재개되었으며, UM, CW, WM구에서는 4주째 이후로 산란이 회복되었다. 난질(난각 두께, 난각 강도, 호우유니트)은 8주째 환우 처리구에서 대조구에 비해 높게 나타났다(P<0.05). 결과적으로, 밀기울 위주의 환우용 사료는 체중 감소에 효과적이었으며, 난각 강도, 난각 두께 및 Haugh Unit가 크게 향상됨을 보여 주었다.

This work was carried out to investigate the effect of the induced molting diet based on wheat bran on the postmolt performance of layers. Two hundred White Leghorn layers (65-old-wk) with over 80% egg production were used for 8 weeks in this work. Treatments were non-molt control (CO), fasting treatment for 10 days (FW), molt treatment with used molting diet for 4 wk (UM), molt treatment with molting diet based on corn-wheat bran for 4 wk (CW), and molt treatment with molting diet based on wheat bran for 4 wk (WM) as 5 treatments (4 replications/treatment and 10 birds/replication). Feed intake decreased at molting treatments at first weeks and increased after the 3rd week compared to control (P<0.05). Body weight (BW) loss were 18.6% of initial BW at first week in FW treatment, and were 11.4, 14.2 and 17.4% in UM, CW and WM treatments at 4th weeks (P<0.05). Egg production decreased at 1 week in molt treatment and stopped at 2 week in FW, whereas, other molting treatments didn't stop laying eggs. The birds started to lay egg at 4 week in FW and recovered at 5 week in other molting treatments. Egg quality (eggshell thickness, eggshell breaking strength, haugh unit) was high in molting treatments compared with control at 8th weeks (P<0.05). Finally, molting diet based on wheat bran affected BW loss and egg quality such as eggshell thickness, eggshell breaking strength and haugh unit.

키워드

참고문헌

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