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유금주 ( Yoo Geum Zoo ),천시내 ( Cheon Si Nae ),김찬호 ( Kim Chan Ho ),정지연 ( Jung Ji Yeon ),김동훈 ( Kim Dong-hoon ),전중환 ( Jeon Jung Hwan ) 한국유기농업학회 2020 韓國有機農業學會誌 Vol.28 No.4
Animal welfare has become a prominent concern around the world so that the laws and guidelines of animal welfare are being strengthened in many countries including the EU. In Korea, it is required to supplement animal welfare standards because social awareness of animal welfare has changed. This study was conducted to compare broiler welfare certification standards and improve the quality of practice. We found that broiler welfare certification standards differ among countries according to environmental and managemental differences. Standards for stocking density and perch which is considered more important for poultry welfare are similar, but there is a little difference in feed, water, litter and lighting. Therefore, we assumed that theses are able to revise standards taking into account the environment and suggested that the broiler welfare certification standard will serve as a more useful criterion if breeding conditions in Korea are considered.
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천시내 ( Cheon Si Nae ),유금주 ( Yoo Geum Zoo ),정지연 ( Jung Ji Yeon ),김찬호 ( Kim Chan Ho ),김동훈 ( Kim Dong-hoon ),전중환 ( Jeon Jung Hwan ) 한국유기농업학회 2021 韓國有機農業學會誌 Vol.29 No.2
The purpose of this study is to obtain basic data on housing facilities and management of broiler welfare certified farms in Korea. We investigated breeds, flock sizes, stocking density, perches, litter, plumage condition, and other diseases. In addition, we measured temperature, relative humidity, light intensity, ammonia, and carbon dioxide concentration in the barn. As result, criteria were met in all cases that we investigated. However, farmers commonly demanded relaxation of perch and litter. Perch usage of broiler was impractical due to low usage of it. Also, litter was increased, resulting in farmers’ economic burden by the imbalance between supply and demand. This situation makes farmers reuse the litter. Unfortunately, there are no clear certification standards. During re-inspection, the animal welfare certification of farms was canceled due to the reuse of litter. It is difficult to modify the standard of perch due to the strong declarative meaning of animal welfare rather than the necessity of perch usage, however, the reuse of litter should be improved. It is important to think and solve any problems faced by all farms. Especially, animal welfare standards need to be improved in more clarity and rationality.
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정지연(Ji Yeon Jung),천시내(Si Nae Cheon),유금주(Geum Zoo Yoo),임세진(Se Jin Lim),전중환(Jung Hwan Jeon),김찬호(Chan Ho Kim) 한국산학기술학회 2021 한국산학기술학회논문지 Vol.22 No.11
본 연구는 돈사 내 사육밀도에 따른 비육돈의 생산성 및 공격 행동 특성을 파악하기 위해 수행되었다. 돈사별 사육 밀도는 저밀도(0.6㎡), 중밀도(0.8㎡), 고밀도(1.0㎡)로 구분하여 돈방별로 8두씩 총 24두 (평균체중 : 75.1±4.3kg)를 공시하여 총 56일간 사양시험 및 공격행동 분석을 실시하였다. 사양시험기간 동안 사료와 물은 자유섭취하게 하였다. 시험종료시 체중과 증체량 및 일당증체량은 저, 중밀도 사육이 고밀도 사육과 비교하여 유의적으로(p <.01) 증가하였으며, 도체중은 저밀도 및 중밀도 사육시 유의적으로 (p <.01) 증가하였으며, 등지방두께는 저밀도 사육 시 유의적으로 (p <.01) 증가하였다. 공격행동 분석의 결과는 유의적인 차이는 나타나지 않았지만, 공격행동 빈도가 저밀도 군에서 평균 32.0회로 가장 낮은 빈도로 발생하였다. 또한 귀물기, 몸통물기, 싸움행동은 사육밀도에 따른 유의적인 차이는 나타나지 않았으나, 귀물기 행동에서는 중밀도 처리구에서 저밀도 및 고밀도 처리구와 비교하여 유의적으로 (p<.05) 증가하였다. 본 연구 결과 비육돈의 사육밀도는 생산성 및 공격행동에 영향을 미치는 것을 확인하였다. This study examined the growth performance and aggressive behavioral characteristics of growing pigs of different stock densities. Totally, 24 growing pigs (average weight: 75.1±4.3kg) were randomly assigned to one of the 3 stock densities, each pen containing 8 pigs: low density (0.6㎡/pig), medium density (0.8㎡/pig), and high density (1.0㎡/pig). All animals were fed ad libitum diet for 56 days. Our results indicate that the final body weight, body weight gain, average daily gain, and dressed weight, are greater for low and medium density stocks (p <0.01), as compared to the high density stock. Backfat thickness was greater for low density than other densities (p <0.01). Behavior analysis revealed lowest frequency of aggression in the low density group, with an average of 32.0. No significant differences were obtained for ear biting, body biting, and fighting, among the stock densities. However, ear biting was greater in the medium density stock than in the other densities (p <0.05). Results of this study confirm that the stock density of finisher pigs exerts considerable effect on the weight gain and aggressive behavior of the animals.
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사료 내 유기태 구리 및 아연의 첨가가 이유자돈의 생산성, 혈액성상, 영양소 이용율 및 분내 미생물 균총에 미치는 영향
김찬호(Chan Ho Kim),정지연(Ji Yeon Jung),천시내(Si Nae Cheon),유금주(Geum Zoo Yoo),전중환(Hung Hwan Jeon) 한국산학기술학회 2021 한국산학기술학회논문지 Vol.22 No.8
본 연구는 유기태 구리 및 아연을 제조하여, 이유자돈 사료 내 첨가 급여시 생산성, 혈액성상, 영양소 이용율 및 분 내 미생물 균총에 미치는 영향을 알아보고자 실시하였다. 약 4주령(28일령)의 3원교잡종(Duroc × Yorkshire × Landrace)의 이유자돈 36두를 35일간 사육하였다. 4처리 3반복으로 반복당 3두를 케이지에 임의로 배치하였다. 처리구는 대조구, 유가태 구리(Cu-SP) 100ppm, 유기태 아연(Zn-SP) 100ppm, 유기태 구리 및 아연 Cu+Zn-SP 각각 100ppm 였다. Phase 2와 전기간에서 일당증체량에서 Cu+Zn-SP 처리구에서 대조구와 Zn-SP 처리구와 비교하여 유의적으로 (p<.05) 높았다. 일당사료첩취량 및 사료요구량은 유의적인 차이는 나타나지 않았다. 혈액내 백혈구, 적혈구 및 영양소 이용율은 처리구간 유의적인 차이는 나타나지 않았다. 또한, 유익균인 lactobacillus 는 유기태 구리 및 아연복합 처리구에서 대조구 및 유기태 아연 처리구와 비교하여 유의적으로 (p<.05) 증가하였으며, 유해균인 E.coli는 구리 및 아연 처리구들이 대조구와 비교하여 유의적으로 (p<.05) 감소하였다. 결과적으로 이유자돈 사료내 유기태 구리 및 아연의 복합제는 혈액성상 및 영양소 이용율에서는 유의적인 차이는 나타나지 않았지만, 일당증체량 및 분 중 미생물균총의 환경을 개선할 수 있다고 생각된다. This study was conducted to investigate the effects of dietary supplementation of organic copper (Cu) and zinc (Zn) on the growth performance, blood parameters, nutrient digestibility, and fecal microflora of weaning pigs. A total of 36 weaning pigs (28d old) were assigned to four treatments; basal, Cu-SP (100mg/kg Cu supplementation as Cu-soy proteinate), Zn-SP (100mg/kg Zn supplementation as Zn-soy proteinate), and Cu+Zn-SP (100mg/kg Cu or Zn-soy proteinate, respectively). The results indicated that ADG was higher (p<.05) in the Cu+Zn-SP treatment group than in the basal and Zn-SP treatment group during phase 2 and the overall period. ADFI and FCR were not significantly different between treatments during phase 2 and the overall period. The population of lactobacillus significantly (p<.05) increased in weaning pigs with Cu+Zn-SP treatments when compared to weaning pigs on basal treatment. The population of E.coli was significantly (p<0.05) different with the Cu and Zn-SP treated pigs showing the lowest E.coli numbers. In conclusion, we believe that Cu+Zn-SP supplementation has a beneficial effect on ADG and fecal microflora in weaning pigs.
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ScienceON
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