Proteolytic activity of ruminal digesta during the feeding cycle in sheep receiving grass hay/concentrate or maize silage/concentrate diets

R. J. Wallace, S. J. A. Wallace, N. McKain

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

R.J. WALLACE, S.J.A. WALLACE AND N. MCKAIN. 2000. Proteolytic activity was measured by the digestion of C-labelled casein in digesta removed from the rumen of four sheep receiving a grass hay/concentrate diet and four sheep receiving a maize silage/concentrate diet. Samples were removed immediately before feeding and at 2-h intervals after feeding up to 12 h. Animals on both diets produced similar proteolytic activities (1·83 (S.D. 0·41) and 2·14 (S.D. 0·61) mg C-casein hydrolysed (ml ruminal fluid) h with the maize silage- and grass hay-based diets, respectively). Time after feeding had no effect on proteolytic activity, but between-animal variation was consistent and highly significant, with the highest-activity animals having activities 64 and 74% higher than the lowest-activity animals on the two diets, respectively.
Original languageEnglish
Pages (from-to)317-319
Number of pages3
JournalLetters in Applied Microbiology
Volume30
Issue number4
DOIs
Publication statusPublished - Apr 2000

Fingerprint

Silage
Poaceae
Zea mays
Sheep
Diet
Caseins
Rumen
Digestion

Cite this

Proteolytic activity of ruminal digesta during the feeding cycle in sheep receiving grass hay/concentrate or maize silage/concentrate diets. / Wallace, R. J.; Wallace, S. J. A.; McKain, N.

In: Letters in Applied Microbiology, Vol. 30, No. 4, 04.2000, p. 317-319.

Research output: Contribution to journalArticle

@article{f09648a55e884ccd8a959d007033f7ba,
title = "Proteolytic activity of ruminal digesta during the feeding cycle in sheep receiving grass hay/concentrate or maize silage/concentrate diets",
abstract = "R.J. WALLACE, S.J.A. WALLACE AND N. MCKAIN. 2000. Proteolytic activity was measured by the digestion of C-labelled casein in digesta removed from the rumen of four sheep receiving a grass hay/concentrate diet and four sheep receiving a maize silage/concentrate diet. Samples were removed immediately before feeding and at 2-h intervals after feeding up to 12 h. Animals on both diets produced similar proteolytic activities (1·83 (S.D. 0·41) and 2·14 (S.D. 0·61) mg C-casein hydrolysed (ml ruminal fluid) h with the maize silage- and grass hay-based diets, respectively). Time after feeding had no effect on proteolytic activity, but between-animal variation was consistent and highly significant, with the highest-activity animals having activities 64 and 74{\%} higher than the lowest-activity animals on the two diets, respectively.",
author = "Wallace, {R. J.} and Wallace, {S. J. A.} and N. McKain",
note = "Medline is the source for the MeSH terms of this document.",
year = "2000",
month = "4",
doi = "10.1046/j.1472-765x.2000.00721.x",
language = "English",
volume = "30",
pages = "317--319",
journal = "Letters in Applied Microbiology",
issn = "0266-8254",
publisher = "Wiley-Blackwell",
number = "4",

}

TY - JOUR

T1 - Proteolytic activity of ruminal digesta during the feeding cycle in sheep receiving grass hay/concentrate or maize silage/concentrate diets

AU - Wallace, R. J.

AU - Wallace, S. J. A.

AU - McKain, N.

N1 - Medline is the source for the MeSH terms of this document.

PY - 2000/4

Y1 - 2000/4

N2 - R.J. WALLACE, S.J.A. WALLACE AND N. MCKAIN. 2000. Proteolytic activity was measured by the digestion of C-labelled casein in digesta removed from the rumen of four sheep receiving a grass hay/concentrate diet and four sheep receiving a maize silage/concentrate diet. Samples were removed immediately before feeding and at 2-h intervals after feeding up to 12 h. Animals on both diets produced similar proteolytic activities (1·83 (S.D. 0·41) and 2·14 (S.D. 0·61) mg C-casein hydrolysed (ml ruminal fluid) h with the maize silage- and grass hay-based diets, respectively). Time after feeding had no effect on proteolytic activity, but between-animal variation was consistent and highly significant, with the highest-activity animals having activities 64 and 74% higher than the lowest-activity animals on the two diets, respectively.

AB - R.J. WALLACE, S.J.A. WALLACE AND N. MCKAIN. 2000. Proteolytic activity was measured by the digestion of C-labelled casein in digesta removed from the rumen of four sheep receiving a grass hay/concentrate diet and four sheep receiving a maize silage/concentrate diet. Samples were removed immediately before feeding and at 2-h intervals after feeding up to 12 h. Animals on both diets produced similar proteolytic activities (1·83 (S.D. 0·41) and 2·14 (S.D. 0·61) mg C-casein hydrolysed (ml ruminal fluid) h with the maize silage- and grass hay-based diets, respectively). Time after feeding had no effect on proteolytic activity, but between-animal variation was consistent and highly significant, with the highest-activity animals having activities 64 and 74% higher than the lowest-activity animals on the two diets, respectively.

UR - http://www.scopus.com/inward/record.url?scp=0034040563&partnerID=8YFLogxK

U2 - 10.1046/j.1472-765x.2000.00721.x

DO - 10.1046/j.1472-765x.2000.00721.x

M3 - Article

VL - 30

SP - 317

EP - 319

JO - Letters in Applied Microbiology

JF - Letters in Applied Microbiology

SN - 0266-8254

IS - 4

ER -