J. Anim Sci.
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J. Anim Sci. 1981. 52:359-362.
© 1981 American Society of Animal Science
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Trypsin and Chymotrypsin Development in the Neonatal Lamb1

J. J. Brown2 and T. W. Perry3

Purdue University, West Lafayette, IN 47907

Abstract

Twenty-two neonatal lambs were sacrificed at various ages (0, 1, 7, 14, 21, 28, 35 and 42 days postpartum), and assays for trypsin and chymotrypsin activity were conducted on the duodenal section of the small intestine. No trypsin activity was found at birth, but gradual non significant increases in activity were found through day 7 and over a fourfold increase (P<.01) was observed between days 7 and 14, with no significant changes for the rest of the 42-day study. Chymotrypsin was present at similar levels from birth through day 7, with a twofold increase (P<.05) in activity between days 7 and 14 and no significant change thereafter.

Footnotes

1 Journal Paper No. 7695, Purdue Univ. Agr. Exp. Sta.

2 From a thesis submitted by the senior author in partial fulfillment of the requirements for the degree of Master of Science. Present address: 2728 NW 67th, Oklahoma City, OK 73116.

3 Dept. of Anim. Sci.






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Copyright © 1981 by the American Society of Animal Science.