Study on Silage Manufacture of Rape Treated as Weed
2012
Choi, K.C., National Institute of Animal Science, RDA, Cheonan, Republic of Korea | Ryu, J.H., National Institute of Animal Science, RDA, Cheonan, Republic of Korea | Jung, M.W., National Institute of Animal Science, RDA, Cheonan, Republic of Korea | Park, H.S., National Institute of Animal Science, RDA, Cheonan, Republic of Korea | Kim, W.H., National Institute of Animal Science, RDA, Cheonan, Republic of Korea | Kim, D.H., National Institute of Animal Science, RDA, Cheonan, Republic of Korea | Kim, C.M., National Institute of Animal Science, RDA, Cheonan, Republic of Korea | Kim, J.G., National Institute of Animal Science, RDA, Cheonan, Republic of Korea | Kim, M.J., National Institute of Animal Science, RDA, Cheonan, Republic of Korea | Lim, Y.C., National Institute of Animal Science, RDA, Cheonan, Republic of Korea
This study was carried out to investigate the effect of harvest stage of rape on nutritive values and quality of round baled rape silage in field of forage crops of Department of Animal Resources Development, National Institute of Animal Science, RDA. Rape was harvested at three different growth stages (flowering, milk and dough stage) and ensiled at each harvest stages. The content of moisture of rape increased with delayed harvest maturity. However, the content of moisture of rape was controlled by pre-wilting (24 hr. and 48 hr). The content of moisture in dough stage was similar to that of haylage. The content of crude protein in round baled rape silage increased with delayed harvest maturity, but the contents of acid detergent fiber, neutral detergent fiber and total digestible nutrient decreased. The pH in all rape silage ranged from 3.8 to 4.4 at three different harvest stages, and pH in dough stage was higher than that of flowering and milk stages (p less than 0.05). The content of lactic acid of all rape silage increased with delayed harvest maturity (p less than 0.05), but the content of acetic acid decreased (p less than 0.05). And then, flieg's score revealed that there was an increase in order; flowering stage (100) = milk stage (100) greater than ripen stage (88).
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