한우에 대한 현미의 사료가치 평가
Evaluation of Feeding Value of Brown Rice in Korean Native Beef Steers (Hanwoo)
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초록
현미의 한우에 대한 사료가치 평가를 위해 옥수수 50%와 100%를 현미로 대체한 배합사료의 반추위 발효성상, in situ 영양소 분해율, in vivo 전장소화율을 측정한 바 결과는 다음과 같다. 옥수수와 현미의 체내 영양소 소화율과 영양가는 유사하였으나 반추위 내 분해율은 현미가 옥수수에 비하여 빠르게 나타났다. 옥수수와 현미가 함유된 시험사료를 급여한 후 반추위 pH는 시험사료 간 차이를 보이지 않았으나 NH3-N 농도는 현미 급여수준이 증가할수록 낮아졌다(P<0.05). 반추위액의 총휘발성지방산 함량은 옥수수구가 현미구에 비하여 높게 나타났으며, 초산과 프로피온산 비율(A/P)은 옥수수구에 비해 현미를 급여한 구에서 높은 수치를 보였다(P<0.05).이러한 결과를 볼 때 소 사료에 옥수수를 대체하여 현미를 사용하는 것에 영양학적으로 문제가 되지 않으며, 특히 곡류사료 위주 사양체계 하에서 낮은 초산과 프로피온산 비율에 대한 현미의 긍정적인 효과가 기대되어 이러한 곡류 내 가용성탄수화물의 이용성에 대한 다양한 연구가 수행되어야 할 것으로 사료된다.
Abstract
The present study was conducted to evaluate feeding value of brown rice in Korean native beef steers (Hanwoo) fed concentrates and orchardgrass hay (50:50 on a wet basis) as a basal diet. Either 50% or 100% of corn in concentrates was substituted for brown rice, and ruminal fermentation characteristics, in situ degradability of feeds and in vivo digestibility of concentrate were investigated. The digestibility and nutritive values of corn and brown rice feeds were similar, whereas rumen degradability of brown rice was higher than that of corn. Compared with corn-based diets, the brown rice substitution decreased (P<0.05) ruminal NH3-N concentration, but did not affect rumen pH. Total volatile fatty acid content in ruminal digesta for the corn based diet was higher than those for the brown rice-contained diets. The brown rice substitution increased (P<0.05) the ratio of ruminal acetic acid to propionic acid (A/P) compared with corn-contained diets.Present results indicate that corn might nutritionally be substituted for brown rice as cattle feeds. In addition, we expect that relatively high A/P with brown rice may produce affirmative effects in rumen physiological aspect, particularly under the grain based feeding system for beef cattle in Korea.
참고문헌 (14)
- "Offical method of analysis association of offical agricultural chemist" (1990)
- "Nutritional requirements of the predominant rumen celluloytic bacteria", 32, pp.1809~ (1973)
- "Response of early lactation dairy cows fed diets varying in sources of nonstructural carbohydrate and crude protein", 73, pp.1039~ (1990)
- "Modified reagents for determination of urea and ammonia", 8, pp.130~132 (1962)
- "Addition of branched and straight chain volatile fatty acids to purified lamb diets and effects on utilization of certain dietary components" (1966)
- "Effect of synchronization of energy and nitrgen supply on ruminal characteristics and microbial growth", pp.2516~2528 (1993)
- "In ruminant physiology and nutrition in Asia" (1989)
- "Effects of source of protein and carbohydrate on ruminal fermentation and passage of nutrients to the small intestine of lactating cows" (2002)
- "Effect of ruminal microbial colonization on cereal grain digestion" (1990)
- "Ruminal fermentation and passage of nutrients to the duodenum of lactating cows fed mixtures of corn and barley" (1995)
- "Sas User's Guide. Statistics. Version 8.e.", pp.~8 (2002), SAS Institute. Inc.
- "農林水産省農林水産技術會議事務局" (1995), 日本標準飼料成分表
- "農林水産省農林水産技術會議事務局" (2001), 日本標準飼料成分表
- "면양의 사료로서 벼, 현미, 백미의 가소화영양성분", 40(1), pp.114~117 (1998)