Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
1992-8-26
pubmed:abstractText
One experiment was conducted during 1989 to determine whether a deficiency exists for either ruminally degradable or escape protein in steers grazing summer native range. Increasing levels of ruminally degradable (.15, .27, and .37 kg/d) and escape protein (.07, .14, and .21 kg/d) replaced a cornstarch and molasses (energy control) supplement. Supplements were isoenergetic and fed individually to steers (.88 kg/d). No response to the degradable protein supplement (P = .15) was observed; however, a linear gain response (P less than .01) was observed in steers fed escape protein in addition to ruminally degradable protein. An in vitro study indicated that more (P less than .01) microbial protein was synthesized from the energy supplement than from the degradable protein; this finding presumably relates to the numerical decrease in weight gains observed for steers fed degradable protein supplements. Analyses of esophageal extrusa samples indicated that CP was relatively constant for the 1989 growing season compared with the 1988 growing season (P less than .05). Escape protein values differed (P less than .01) between years and among months within year. Forages that were apparently grazed in 1989 were never deficient in degradable protein. Additional gain observed from feeding escape protein would indicate that microbial protein synthesis may be insufficient to satisfy the metabolizable protein requirement, which probably limited gains by steers grazing summer native range.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0021-8812
pubmed:author
pubmed:issnType
Print
pubmed:volume
70
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1957-64
pubmed:dateRevised
2003-11-14
pubmed:meshHeading
pubmed:year
1992
pubmed:articleTitle
Effects of ruminally degradable and escape protein supplements on steers grazing summer native range.
pubmed:affiliation
Department of Animal Science, University of Nebraska, Lincolon 68583-0908.
pubmed:publicationType
Journal Article