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Lee SB, Choi CW, Jin YC, et al. Effect of Oral Administration of Intact Casein on Gastrointestinal Hormone Secretion and Pancreatic α-Amylase Activity in Korean Native Steer. Asian-Australas J Anim Sci. 2013;26(5):654-60doi: 10.5713/ajas.2012.12510.
Lee, S. B., Choi, C. W., Jin, Y. C., Wang, T., Lee, K. H., Ku, M. B., Hwang, J. H., Kim, K. H., Vega, R. S., & Lee, H. G. (2013). Effect of Oral Administration of Intact Casein on Gastrointestinal Hormone Secretion and Pancreatic α-Amylase Activity in Korean Native Steer. Asian-Australasian journal of animal sciences, 26(5), 654-60. https://doi.org/10.5713/ajas.2012.12510
Lee, S B, et al. "Effect of Oral Administration of Intact Casein on Gastrointestinal Hormone Secretion and Pancreatic α-Amylase Activity in Korean Native Steer." Asian-Australasian journal of animal sciences vol. 26,5 (2013): 654-60. doi: https://doi.org/10.5713/ajas.2012.12510
Lee SB, Choi CW, Jin YC, Wang T, Lee KH, Ku MB, Hwang JH, Kim KH, Vega RS, Lee HG. Effect of Oral Administration of Intact Casein on Gastrointestinal Hormone Secretion and Pancreatic α-Amylase Activity in Korean Native Steer. Asian-Australas J Anim Sci. 2013 May;26(5):654-60. doi: 10.5713/ajas.2012.12510. PMID: 25049835; PMCID: PMC4093330.
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Asian-Australas J Anim Sci. 2013 May;26(5):654-60. doi: 10.5713/ajas.2012.12510.

Effect of Oral Administration of Intact Casein on Gastrointestinal Hormone Secretion and Pancreatic α-Amylase Activity in Korean Native Steer.

Asian-Australasian journal of animal sciences

S B Lee, C W Choi, Y C Jin, T Wang, K H Lee, M B Ku, J H Hwang, K H Kim, R S A Vega, H G Lee

Affiliations

  1. Department of Animal Science and Technology, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, Korea.

PMID: 25049835 PMCID: PMC4093330 DOI: 10.5713/ajas.2012.12510

Abstract

Three Korean native steers (779±24 kg) fitted with duodenal cannulas were used in a 3×3 Latin square design to investigate the influence of oral administration of soluble proteins, intact casein (IC) and acid hydrolyzed casein (AHC), on gastrointestinal hormone (GIH) secretion in the blood and pancreatic α-amylase activity in the duodenum. Oral treatment consisted of a basic diet (control), IC (C+100% protein), or AHC (C+80% amino acid, 20% peptide) for 21 d. Blood and duodenum samples were collected for measurement of serum GI hormones, and pancreatic α-amylase activity was determined at 900, 1030, 1330, 1630, and 1930 h after feeding on d 21 of treatment. The levels of serum cholecystokinin (CCK) and secretin in the IC treatment group were higher compared to the other treatment groups (p<0.05). In addition to the changes in CCK and secretin levels upon IC treatment, the pancreatic α-amylase activity in the duodenum was higher in the IC group compared to the control diet group (p<0.05). The response of serum ghrelin to IC and AHC treatment was in accordance with the response of serum secretin. The level of peptide fragments flowing in the duodenum was higher in the IC treatment group than the other treatment groups (p<0.05). In conclusion, this study demonstrated that an increase in duodenal CCK and secretin upon IC oral administration increased pancreatic α-amylase secretion. In addition, ghrelin may be associated with GI hormone secretion in Korean native steers.

Keywords: Cholecystokinin; Ghrelin; Korean Native Steer; Secretin; α-Amylase

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