Effect of Feeding a By-product Feeds-based Silage (Biosilage) on Behavior Pattern of Growing Hanwoo Steers
2013
Kim, Y.I., Konkuk University, Chung-Ju, Republic of Korea | Lee, S.M., Kyung-Pook National University, Sangju, Republic of Korea | Park, K.K., Konkuk University, Seoul, Republic of Korea | Kwak, W.S., Konkuk University, Chung-Ju, Republic of Korea
This study was carried out to investigate the effects of a by-product feed-based silage (BF silage) feeding on behavior patterns of growing Hanwoo steers. A total of 10 Hanwoo steers (11 months old, 302kg of body weight) were assigned to 2 dietary treatments: the control (concentrate mix + free access to rice straw), and the treatment (concentrate mix + free access to BF silage). The behavior patterns were observed for 48 hours. The intakes of dry matter (DM) and neutral detergent fiber (NDF) of the treatment group were higher than those of the control group. Eating time, ruminating time and resting time were not different between the control and treatment. But, the intake time per kg DM was higher for the control than treatment. The number of bolus, total chewing frequency, number of ruminating per bolus and number of bolus per minute were not different between the control and treatment. But the chewing frequency per bolus was higher in the treatment than control (p0.05), and feed value index was lower in treatment than control (p0.05). Frequencies of drinking and defecating were not different between the two groups, but the frequency of urinating was higher for the treatment (p0.05) than control. Eating rate, ruminating efficiency and chewing efficiency were much higher in the treatment group than control (p0.05). These results indicate that the replacement of conventional rice straws with the BF silage (physically effective NDF, about 25%) did not affect the ruminating behaviors of Hanwoo steers significantly.
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