Korean Journal of Organic Agriculture (한국유기농업학회지)

Korean Association of Organic Agriculture (한국유기농업학회)
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Comparison of Stress Indicators in Blood and Muscle of Pigs in Conventional and Animal Welfare Farms

일반 및 동물복지농장 돼지의 혈액 및 근육 내 스트레스 인자 비교

  • 이정은 (전북대학교 축산학과) ;
  • 박진룡 (전북대학교 축산학과) ;
  • 강다래 (전북대학교 동물생명공학과) ;
  • 김희은 (전북대학교 농축산식품융합학과) ;
  • 남기창 (순천대학교 동물자원과학과) ;
  • 심관섭 (전북대학교 동물생명공학과, 농축산식품융합학과)
  • Received : 2020.10.13
  • Accepted : 2020.11.09
  • Published : 2020.11.30
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Abstract

Intensive farming methods that do not guarantee animal welfare can induce stress in pigs. Stress, in turn, can reduce their disease resistance and influence their hormones and metabolites in such a manner that productivity is negatively affected. This study was conducted to compare the stress related factors and blood characteristics of pigs raised on conventional farms and those raised on animal welfare farms. We measured the levels of cortisol, epinephrine and norepinephrine, biochemical parameters in blood and glycogen, L-lactate and heat shock protein 70 (HSP70) in muscle, as physiological markers of indicating the stress in conventional farm pigs (Control, n=10) and animal welfare farm pigs (Welfare, n=10). We found that there was a significant difference in the albumin-globulin ratio (A/G ratio), as well as the albumin (ALB), blood urea nitrogen (BUN) and aspartate aminotransferase (AST) levels between the two farms. Epinephrine was significantly higher in conventional farm, while level of norepinephrine was higher in animal welfare farm. There was no significant difference in cortisol, which is known as a stress hormone, across the two groups of farms. Muscular glycogen content was significantly high in animal welfare farm pigs. While L-lactate tended to be low in the animal welfare farm pigs, the difference between them and the conventional farm cohorts was not significant. HSP70 showed high levels of expression in conventional farm. Thus, we suggested that blood parameter results showed a stress response in the livers of conventional farm, and that catecholamine hormones, glycogen, L-lactate and HSP70 can be used as physiological factors of assessing animal welfare.

Keywords

Acknowledgement

본 결과물은 농림축산식품부의 재원으로 농림식품기술기획평가원의 농생명산업기술개발사업의 지원을 받아 연구되었음(318022-04-2-CG000).

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