- Volume 57 Issue 1
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Effects of by-product feed-based silage on feeding, rumination, and excretion in growing Hanwoo heifers
- Kim, Young-Il (Division of Food Bioscience, College of Health and Medical Life Sciences, Konkuk University) ;
- Lee, Sang Moo (Division of Food Bioscience, College of Health and Medical Life Sciences, Konkuk University) ;
- Lee, Youn Hee (Division of Food Bioscience, College of Health and Medical Life Sciences, Konkuk University) ;
- Lee, Myeon (Division of Food Bioscience, College of Health and Medical Life Sciences, Konkuk University) ;
- Choi, Do Young (Division of Food Bioscience, College of Health and Medical Life Sciences, Konkuk University) ;
- Kwak, Wan Sup (Division of Food Bioscience, College of Health and Medical Life Sciences, Konkuk University)
- Received : 2014.09.19
- Accepted : 2014.12.21
- Published : 2015.01.31
This study investigated the effects of feeding by-product feed (BF)-based silage on the behavior of growing Hanwoo heifers. Twelve Hanwoo heifers (13.2 months-old, 315 kg body weight; four heifers per pen) were assigned to three diets: a rice straw (RS) diet (concentrate mix and free access to RS), a RS and BF-based silage (RSBFS) diet (concentrate mix and free access to RS and BF-based silage), and a BF-based silage (BFS) diet (concentrate mix and free access to BF-based silage). Behavior was recorded for 5 days using camcorders. Compared to the RS group, the BFS group showed 21.7% higher dry matter intake, shorter feeding, rumination, and chewing times, as well as longer resting time (p < 0.05). Although all groups exhibited similar drinking, urination, and defecation frequencies, the BFS group exhibited higher feeding rates, rumination efficiency, and chewing efficiency than the RS group (p < 0.05). Compared to the BFS group, the RSBFS group showed higher
Spent mushroom substrate;By-product feed;Rumination;Behavior;Hanwoo heifer
Grant : Cooperative Research Program for Agriculture Science and Technology Development
Supported by : Rural Development Administration
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