Journal of Animal Science and Technology

Korean Society of Animal Sciences and Technology (한국축산학회)
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Effects of Polyclonal Antibodies to Abdominal and Subcutaneous Adipocytes on Ruminal Fermentation Patterns and Blood Metabolites in Korean Native Steers

한우 복강 및 피하지방 감소 다클론 항체가 반추위 발효패턴 및 혈액 대사물질에 미치는 영향

  • Received : 2009.04.29
  • Accepted : 2009.06.18
  • Published : 2009.06.01
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Abstract

Sixteen ruminally cannulated Korean native steers (Hanwoo; $626.2\pm47.72$ kg) were used to investigate the effects of polyclonal antibodies against abdominal (AAb) and subcutaneous adipocyte membrane proteins (SAb) on ruminal fermentation patterns and blood metabolites. The body weight (BW) of Hanwoo was decreased 2-weeks after AAb and SAb injection, BW reduction was also observed in control and non-immunized serum groups, indicating that stress induced by other factors (e.g. blood sampling etc.) rather than antibodies injection may affect the BW reduction. Antibodies treatment did not affect (P > 0.05) rumen pH, volatile fatty acids and ammonia-N concentration. The ranges were similar with typical ranges of those in Hanwoo. Compared with control, blood urea N concentration was decreased in AAb group and increased (P < 0.05) in SAb group before antibodies treatment. However, none of the groups were significantly (P > 0.05) affected at 2- or 4-weeks after the treatment. Concentration of plasma glucose in the non-immunized serum group was significantly higher (P < 0.05) than the other groups at 0-week after treatment. However, antibodies treatment did not affect the concentration of plasma glucose. Concentration of plasma triglyceride showed no difference (P > 0.05) between the groups and ranged from 11.4 to 19.9 mg/dl, which is the perfect range of plasma triglyceride of Hanwoo fed concentrate based diets. In conclusion, these results may indicate that the present AAb and SAb have safety in nutritional physiological metabolism in Hanwoo. Further study on in vivo fat reduction of the antibodies against abdominal and subcutaneous adipocytes PMPs of Hanwoo is required for inedible fat-reduced high quality beef production.

본 연구는 반추위 캐뉼라가 장착된 거세한우 16두 ($626.2\pm47.72$ kg)를 이용하여 한우 복강 및 피하지방 감소 항체를 생체 주사 처리 시 사료섭취량, 반추위 발효패턴 및 혈액 대사물질 등 영양생리대사에 미치는 영향을 조사하고자 실시하였다. Choi 등(2008)에서 개발된 한우복강(AAb) 및 피하지방 감소 항체(SAb)을 피하 주사하였을 때, 주사 후 2주차에서 수치적으로 체중의 감소가 발생했으나, 무처리구 및 비면역항체처리구에서도 체중의 감소가 발생해 항체 주사에 의한 처리의 영향이라기 보다는 다른 요인(혈액채취 등)에 의한 스트레스에서 기인하는 것으로 판단된다. 항체 주사 처리 시 반추위 pH 패턴, 휘발성 지방산 및 암모니아 농도에는 유의적 변화(P > 0.05)가 나타나지 않았고, 그 수준 또한 일반적인 수준 범위에서 벗어나지 않았다. 혈액 대사물질의 변화에서는 항체 주사 처리 전 BUN 농도에서 무처리구 기준, AAb 처리구는 낮게, 반면에 SAb 처리구는 높게 나타났으나(P < 0.05), 오히려 항체 주사 처리 후에서 유의적 차이가 나타나지 않았다(P > 0.05). 혈액 내 glucose 농도 역시 항체 주사 처리 전 비면역혈청처리구에서만 유의적 차이를 보였고(P < 0.05), 항체 주사 처리 후에서는 처리구별 유의적 영향은 없었다. 혈액 내 중성지방의 농도는 항체 주사 처리에 의한 유의적 차이는 나타나지 않았고, 그 농도도 11.4~19.9 mg/$d{\ell}$로 일반적인 농후사료 위주의 사료 급여시 거세한우의 혈액 내 중성지방의 수준으로 판단되었다. 따라서, 이상의 결과를 볼 때, 본 연구에서 이용된 AAb 및 SAb는 in vivo 영양생리대사에 부정적 영향을 미치지 않는 안전한 항체로 사료된다.

Keywords

References

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