Effect dietary corn starch intake on pancreatic amylase and intestinal maltase and pH in cattle

Journal of Animal Science
J R RussellN A Jorgensen

Abstract

The pH optimum of pancreatic alpha-amylase from grain-fed steers was determined to be 6.9, while that of intestinal maltase was established at 5.8. Both assays were found to be linear up to 1 hr of incubation. The V max of pancreatic amylase was determined to be pancreatic amylase was determined to be 1.15 mg of maltose monohydrate produced/hr. Activities of pancreatic and intestinal maltase were not reduced (P greater than .05) during the interval from sample collection from the animal until analysis 4 hr later when tissues were kept on ice. Twenty-four yearling Holstein steers fed either alfalfa hay at a maintenance level of metabolizable energy (ME) intake or corn at one, two or three times the maintenance ME intake level were slaughtered after being fed 106 days. The pancreas was removed alone with sections of the intestine. Specific activity of pancreatic amylase for steers fed the high level of corn was 129% of that for steers fed the alfalfa diet (P greater than .05). Intestinal maltase activity was highest in the jejunum and decreased toward the ileum. Increasing dietary starch intake resulted in no response (P greater than .05) in maltase activity at 10, 30, 50, 70, or 90% of the small intestine length. The effect of ...Continue Reading

Citations

Jul 1, 1993·Journal of Dairy Science·D L Harmon
Mar 6, 2013·Journal of Experimental Zoology. Part A, Ecological Genetics and Physiology·Kevin D KohlM Denise Dearing
Apr 4, 2017·Journal of Dairy Science·J A N MillsJ Dijkstra
Feb 2, 2018·Journal of Animal Science and Biotechnology·Qingbiao XuJianxin Liu
Jun 1, 2018·Engineering in Life Sciences· DarwinWipa Charles
May 2, 2003·Journal of Animal Science·C J RichardsG B Huntington
Apr 17, 2015·The Journal of Nutrition·Myrthe S GilbertWalter J J Gerrits
Apr 5, 2018·Journal of Animal Science·Edwin Westreicher-KristenAndreas Susenbeth
Aug 19, 2014·TheScientificWorldJournal·Arda YıldırımZafer Ulutaş
Feb 7, 2020·Animal : an International Journal of Animal Bioscience·D L Harmon, K C Swanson
Sep 17, 2017·Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology·Samantha C LeighDonovan P German
Apr 24, 2009·Journal of Animal Physiology and Animal Nutrition·M XuJ H Yao
Mar 10, 2015·Journal of Dairy Science·F X Suarez-MenaJ D Quigley

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