책임운영기관 농촌진흥청 국립축산과학원 (로고)

This study examined the welfare-level and environmental-level of sows in three farms where group-housing was conducted in sows in preparation for animal welfare certification. The welfare-level evaluation data was collected on feeding (Good-feeding), facility (Good-housing), health (Good-health), and behavior (Appropriate-behavior) from the experimental farms. For environmental-level evaluation of H2S, NH3, and CO2 in the pigsty were measured once a month for three months. Good housing showed that shoulder-sores comprised more than 30% of old wounds in A (p<0.05), but panting due to heat was not observed in any of the farms (p<0.05). In Good-health, a wounds-level of approximately 10% was noted in all farms, and traces of vulva-lesions occurred in 5% of sows showing bleeding from the vulva in A. The social behavior examination showed more yelling and biting in A than the others. The stereotypes were less than 17% of the farms, and excessive chewing behavior was observed. The relationship with the manager of pigs running away in A, B, and C was 100%, 13%, and 66%, respectively (p<0.05). For the environmental level in the pigsty, the average temperature/ humidity of each farm was (°C/%) A:25.1/70.7, B:22.6/68.8, and C:24.6/86.6. The H2S(ppm) levels were A:0.3+-1.82, B:0.3+-1.64, and C:0+-0.48. The NH3(ppm) level was A:11.0+-4.06, B:11.0+-3.02, and C:21.0+-1.37. A high level of CO2(ppm) was observed in A:400+-264.57, B:800+-152.75, and C:400+-132.42, which was higher in B than the others.