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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.1
- 수록면
- 426 - 439 (14page)
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It is already well known that castration improves marbling quality but exact timing of castration is still highly debated in beef cattle production industry. After castration, blood hormonal changes occur in steer and objective of this study was to investigate the effects of growth hormone (GH) levels on adipocyte differentiation in stromal vascular cells (SVCs) and transdifferentiation into adipocytes in C2C12 myoblasts. Total GH concentrations were measured via enzyme-linked immunosorbent assay (ELISA) in 24 male calves and 4 female calves. Cell proliferation, cellular triglyceride (TG) accumulation, and the cell’s lipolytic capability were measured in C2C12 myoblasts and SVCs. Myogenic, adipogenic, and brown adipocyte-specific gene expression was measured via real-time polymerase chain reaction (PCR) using SYBR green. Serum GH levels were the highest in late-castrated calves. Treatment with 5 ng/mL GH resulted in greater TG accumulation as well as increased CCAAT-enhancer-binding protein (C/EBP)α and peroxisome proliferator-activated receptor (PPAR)γ expression compared to that after treatment with 15 ng/mL GH. Treatment with 5 ng/mL GH also resulted in lower myogenin (myo)G and myoD expression compared to that after treatment with 15 ng/mL GH. The expression of bone morphogenetic protein (BMP) 7 after treatment with 5 ng/ mL GH was higher than that after treatment with 15 ng/mL GH. But carcass characteristics data showed no significant difference between early and late castrated steers. Therefore, our results indicate that castration timing does not seem to be inevitable determinate of carcass qualities, particularly carcass weight and marbling score in Hanwoo beef cattle.
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참고문헌 (33)
참고문헌 신청
Felista W. Mwangi / 2019 / Diet and Genetics Influence Beef Cattle Performance and Meat Quality Characteristics / Foods 8(12):648
이보인 / 2019 / Correlation of Marbling Characteristics with Meat Quality and Histochemical Characteristics in Longissimus Thoracis Muscle from Hanwoo Steers / 한국축산식품학회지 39(1):151~161
Roberto Vettor / 2009 / The origin of intermuscular adipose tissue and its pathophysiological implications / American Journal of Physiology-Endocrinology and Metabolism 297(5):E987~E998
Kevin J P Ryan / 2013 / Dose-dependent effects of vitamin D on transdifferentiation of skeletal muscle cells to adipose cells / Journal of Endocrinology 217(1):45~58
G. Bretschneider / 2005 / Effects of age and method of castration on performance and stress response of beef male cattle: A review / Livestock Production Science 97(2-3):89~100
이보인 / 2019 / Correlation of Marbling Characteristics with Meat Quality and Histochemical Characteristics in Longissimus Thoracis Muscle from Hanwoo Steers / 한국축산식품학회지 39(1):151~161
Roberto Vettor / 2009 / The origin of intermuscular adipose tissue and its pathophysiological implications / American Journal of Physiology-Endocrinology and Metabolism 297(5):E987~E998
Kevin J P Ryan / 2013 / Dose-dependent effects of vitamin D on transdifferentiation of skeletal muscle cells to adipose cells / Journal of Endocrinology 217(1):45~58
G. Bretschneider / 2005 / Effects of age and method of castration on performance and stress response of beef male cattle: A review / Livestock Production Science 97(2-3):89~100
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