Journal of Animal Science and Technology

Korean Society of Animal Sciences and Technology (한국축산학회)
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Effects of Rice Straw and Rice Hull Supplement on Rumination and Chewing Behavior in Hanwoo Steers

볏짚 및 가공처리 왕겨의 급여가 한우의 사료섭취 및 반추행동에 미치는 영향

  • Lee, W.S. (National Livestock Research Institute, RDA) ;
  • Lee, B.S. (National Livestock Research Institute, RDA) ;
  • Lee, S.C. (National Livestock Research Institute, RDA) ;
  • Lee, Sang-S (School of Agricultural Biotechnology, Seoul National University) ;
  • Lee, S.Y. (School of Agricultural Biotechnology, Seoul National University) ;
  • Lee, D.Y. (School of Agricultural Biotechnology, Seoul National University) ;
  • Ha, J.K. (School of Agricultural Biotechnology, Seoul National University)
  • Published : 2004.02.29
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Abstract

Effects of low quality roughage sources on duration and frequencies of rumination and chewing in Hanwoo steers were determined, Animals were fed three diets; concentrate+rice straw(SO:SO), concentrate+ rice straw + popped rice hull(SO:3S: IS) and concentrate+ rice straw+ground rice hull(SO:3S: IS) to compare both rice straw alone and combination with rice hull. Eating and ruminating time of steers fed concentrate+ rice straw(SO:50), concentrate+ rice straw + popped rice hull(50:35:15) and concentrate + rice straw + ground rice hull(50:3S:15) were 78.8 and 338.4minlday; 98.0 and 362.5minlday, and 160 and 519.2min/day, respectively. When steers were fed popped rice hull and ground rice hull, time spent for both eating and ruminating was significantly increased(p <0.05). When steers fed popped and ground rice hull, number of ruminating chews and number of chews per rumination time were significantly decreased(p<0.05). The number of rumination boli and boli per rumination time had significantly decreased(p<0.05), but chewing time per boli, number of chew'S per bolus were significantly increased(p

본 연구는 한우에 급여하는 저질 조사료 원 이 반추시간 및 빈도, 저작시간 및 저작빈도에 미치는 효과를 알아보기 위해 실시하였다. 시험사료는 농후사료 + 볏짚(50:50), 농후사료 + 볏짚 + 팽연왕겨(50:35:15), 농후사료+ 볏짚 + 분쇄왕겨(50:35:15)을 사용하였다. 농후사료 + 볏짚(50:50), 농후사료+ 볏짚 + 팽연왕겨(50:35:15) 및 농후사료+ 볏짚+분쇄왕겨(50:35:15)를 섭취한 한우의 사료섭취 및 반추시간은 각각 78.8과 338.4, 98.0과 362.5, 그리고 160과 519.2minld이었다. 벗짚의 30%를 팽연왕겨나 분쇄왕겨로 대체하였올 때 사료섭취 및 반추시간이 유의하게 증가하였으며 (p<0.05), 1일 반추시 총 저작횟수와 본당 저작횟수는 팽연왕겨와 분쇄왕겨를 급여하였올 때 유의하게 감소하였다(p<0.05). 또한 일일 총 반추식괴수와 반추분당 식괴수도 팽연왕겨와 분쇄왕겨를 급여할 때에 감소되었지만, 식괴당 저작시간과 저작횟수는 증가되었다(p<0.05). 이러한 결과는 볏짚과는 다른 물리척 폭성을 행연왕겨와 분쇄왕겨가 갖고 있고, 왕겨의 조사료적인 가치는 왕겨가 갖고 있는 물리척인 유효성에 의하여 반추위가 자극펀 결과에 의한 것으로 생각된다.

Keywords

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