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KMID : 1025520050470030419
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Journal of Animal Science and Technology
2005 Volume.47 No. 3 p.419 ~ p.428
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Effect of Replacing Concentrate with Mugwort Pellet on Nutrient Utilization and Ruminal Fermentation Characteristics in Sheep
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Kim J.-H.
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Abstract
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This study was carried out to investigate the effect of replacing dried mugwort (Artemisia montana Pampan) in concentrate a time of preparation pellet. The treatments, arranged in a 4×4 Latin square design, were four additional levels of mugwort at 0, 3, 5 and 10% in concentrate. Four crossbred (Corriedale×Polwarth, ♂) sheep with a mean body weight of 41.3 kg were used to evaluate nutrients digestibility, palatability, fermentation characteristics and microbial protein synthesis in the rumen. The digestibility of crude protein was improved (p<0.05) to 6.1%~8.6% in sheep fed 3, 5 and 10% mugwort pellet treatments compared with that of control. That of crude fat and NDF was improved (p<0.05) to 5.8%~7.3% in sheep fed 3% compared to other treatments. The ruminal pH was significantly (p<0.05) decreased in sheep fed 3% mugwort pellet compared to other treatments when observed at 0.5 hour after feeding. The ammonia nitrogen concentrations were the highest in sheep fed all treatments at 1 hour after feeding. The ruminal concentrations of acetic acid and propionic acids were an improvement (p<0.05) at the 3% and 5% treatments. Retained nitrogen of 3, 5 and 10% treatment with the value of 2.24~2.82g was higher (p<0.05) than that of the control with 0.78g and microbial protein production of 10% treatment was higher (p<0.05) than that of control.
This study suggested that the replacing with 3% dry mugwort (Artemisia montana Pampan) in concentrate a time of preparation pellet will improve nutrient digestibility, palatability, ruminal fermentation characteristics and feed value.
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KEYWORD
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Mugwort, Nutrients digestibility, Ruminal Fermentation characteristic, Retained nitrogen, Microbial protein synthesis
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