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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 충남대학교 농업과학연구소 Korean Journal of Agricultural Science Korean Journal of Agricultural Science Vol.47 No.4
- 발행연도
- 2020.12
- 수록면
- 941 - 949 (9page)
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초록· 키워드
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This study evaluated the nutritional value of Italian ryegrass (IRG) as a forage source for Hanwoo. The nutritional value of IRG was assessed and compared to that of rice straw, oat hay, and timothy hay using two different methods: 1) in vitro ruminal fermentation 2) in vivo total tract digestibility. In vitro DM digestibility was lower in rice straw compared to the other three forage sources after both 24 and 48 h of incubation (p < 0.01). Among the four forage sources, IRG had a higher NH₃-N concentration after both 24 and 48 h of incubation (p < 0.01). In the in vivo digestibility trials, four different substrates were used: 1) 80% concentrate with 20% rice straw, 2) 80% concentrate with 20% oat hay, 3) 80% concentrate with 20% IRG, and 4) 80% concentrate with 20% timothy hay. The dry matter, crude protein, non-fiber carbohydrate, and detergent fiber digestibility were the greatest in the C80-IRG20 among the four forage groups. In summary, IRG had a similar level of energy efficiency compared to oat hay and timothy hay. Furthermore, the result of the chemical composition analysis showing a higher ammonia concentration in the in vitro fermentation experiment and the high protein digestibility in the in vivo experiment indicate that IRG is a good source of protein compared to oat hay and timothy hay.
목차
Abstract
Introduction
Materials and Methods
Results and Discussion
Conclusions
References
참고문헌 (26)
참고문헌 신청
Burns GA / 2015 / Comparison of herbage yield, nutritive value and ensilability traits of three ryegrass species evaluated for the Irish Recommended List / Irish Journal of Agriculture Food Research 254:31~40
Chaney AL / 1962 / Modified reagents for determination of urea and ammonia / Clinical chemistry 8:130~132
Chaudhary S / 2012 / An in vitro approach to assess the neurotoxicity of valproic acid-induced oxidative stress in cerebellum and cerebral cortex of young rats / Neuroscience 225:258~268
Cho WM / 1997 / Effects of grazing starting age at growing stage and roughages at finishing stage on growth performance and beef quality in Hanwoo steers / Korean Journal of Animal Science 37:375~382
Conrad HR / 1996 / Symposium on factors influencing the voluntary intake of herbage by ruminants : Physiological and physical factors limiting feed intake / Journal of Animal Science 25:227~235
Chaney AL / 1962 / Modified reagents for determination of urea and ammonia / Clinical chemistry 8:130~132
Chaudhary S / 2012 / An in vitro approach to assess the neurotoxicity of valproic acid-induced oxidative stress in cerebellum and cerebral cortex of young rats / Neuroscience 225:258~268
Cho WM / 1997 / Effects of grazing starting age at growing stage and roughages at finishing stage on growth performance and beef quality in Hanwoo steers / Korean Journal of Animal Science 37:375~382
Conrad HR / 1996 / Symposium on factors influencing the voluntary intake of herbage by ruminants : Physiological and physical factors limiting feed intake / Journal of Animal Science 25:227~235
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