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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
10
|
| pubmed:dateCreated |
1997-1-14
|
| pubmed:abstractText |
Four Holstein steers (261 +/- 2 kg) with cannulas in the rumen and proximal duodenum were used in a 4 x 4 Latin square experiment to evaluate the interaction of dietary Ca (.45 vs. 90%) and supplemental fat (0 vs 5% yellow grease) on characteristics of digestion. There were no treatment interactions (P > .10). Supplemental Ca did not influence (P > .10) digestibility of OM, NDF, starch, N, and fatty acids. Supplemental fat decreased ruminal (21%, P < .05) and total tract (3%, P < .01) digestibility of OM and ruminal (25%, P < .10) and total tract (20%, P < .01) digestibility of NDF. Supplemental fat increased (P < .10) ruminal microbial efficiency. Ruminal free Ca was not affected (P > .10) by Ca intake but was closely associated with ruminal pH and fatty acid intake (R2 = .84). Apparent ruminal Ca absorption was generally negative, being increased (P < .05) by Ca supplementation and decreased (P < .10) by fat supplementation. Postruminal (P < .05) and total tract (P < .01) apparent Ca absorption was increased by Ca supplementation. Supplemental fat did not influence (P > .10) postruminal or total tract Ca absorption. One hundred forty-four medium-frame crossbred steers were used to evaluate treatment effects on feedlot growth performance. There were no treatment interactions (P > .10). Increasing dietary Ca did not influence (P > .10) steer performance. Supplemental fat decreased (P < .01) DMI and increased NE value of the diet (P < .01). It is concluded that increasing dietary Ca from .45 to .9% in high-grain finishing diets will not affect the feeding value of supplemental fat and that high levels (5%) of supplemental fat will not have a detrimental effect on Ca absorption.
|
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:citationSubset |
IM
|
| pubmed:chemical | |
| pubmed:status |
MEDLINE
|
| pubmed:month |
Oct
|
| pubmed:issn |
0021-8812
|
| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:volume |
74
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
2303-9
|
| pubmed:dateRevised |
2003-11-14
|
| pubmed:meshHeading |
pubmed-meshheading:8904695-Absorption,
pubmed-meshheading:8904695-Animals,
pubmed-meshheading:8904695-Calcium,
pubmed-meshheading:8904695-Calcium, Dietary,
pubmed-meshheading:8904695-Cattle,
pubmed-meshheading:8904695-Dietary Fats,
pubmed-meshheading:8904695-Digestion,
pubmed-meshheading:8904695-Drug Interactions,
pubmed-meshheading:8904695-Food, Fortified,
pubmed-meshheading:8904695-Hydrogen-Ion Concentration,
pubmed-meshheading:8904695-Male
|
| pubmed:year |
1996
|
| pubmed:articleTitle |
Interaction of dietary calcium and supplemental fat on digestive function and growth performance in feedlot steers.
|
| pubmed:affiliation |
Animal Science Department, Imperial Valley Agricultural Center, University of California, El Centro 92243, USA.
|
| pubmed:publicationType |
Journal Article
|