Korean Journal of Veterinary Research 2005;45(2):245-250.
Effects of space allowance on the social behavior of Korean native cattle (Bos taurus coreanae) steers
Ji-hoon Han, Jung-hwan Jeon, Dong-joo Kim, Hong-hee Chang, Ja-min Koo, Young-ki Kim, Scott-s Lee, Eun-jung Kim, Hee-chun Lee, Hyo-jong Lee, Seong-chan Yeon
Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University
한우 거세우의 사회 행동에 공간 허용이 미치는 영향
한지훈, 전중환, 김동주, 장홍희, 구자민, 김영기, 이스캇, 김은정, 이희천, 이효종, 연성찬
경상대학교 수의과대학 동물의학연구소
This study was carried out to find out how space allowance affect the social behavior of Korean native cattle (Bos taurus coreanae) steers. Twelve Korean native cattle (Bos taurus coreanae) steers were used as subjects, each of which was 30-month-old and observation period was from June to July 2003. Five (T1) and seven (T2) steers were allotted to two pens of $5m{ imes}10m$ in a building with slate roof and open sides respectively. They were fed at 09:00 h and 16:00 h, twice a day. The behaviors of steers were recorded from 06:00 h to 17:00 h, using two color CCD cameras (Samsung SDC-411, Korea), one B/W CCD cameras (Samsung SBC-340, Korea), one multiplexer (Samsung SDM-081, Korea) and a time lapse VCR (Samsung SRV-30, Korea). The behaviors of each steer were recorded every 2 min using an instantaneous point sampling method. While the mean percentage of time budget in WA of T1 was lower than that of T2 (p<0.05), the mean percentage of time budget in SF of T1 was higher than that of T2 (p<0.05). When it gets hot, steers in T1 rested from 10:00 h to 14:00 h when it gets cool, showing 40~80% of LD rate while steers in T2 rested from 12:00 h, when it very hot to 17:00 h, showing 20~50% of LD rate, which is relatively low. Steers in T1 were fed from 06:00 h to 08:00 h when it was cool and from 16:00 h to 18:00 h, showing 20~45% of EA rate while steers in T2 were fed from 08:00 h to 14:00 h when it was hot, showing 25~50% of EA rate. In conclusion, it turned out that the number of steers affected their social behavior, and T1 was better environment than T2 in terms of welfare.
Key Words: Korean native cattle (Bos taurus coreanae), social behavior, space allowance, steer

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