Switch to
| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
11
|
| pubmed:dateCreated |
1991-5-21
|
| pubmed:abstractText |
Two separate experiments were conducted to determine the ability of magnesium aspartate hydrochloride (Mg-Asp-HCl) to antagonize the effects of thermal stress in laying hens. In both experiments, hens were exposed to either a cyclic ambient temperature of 27 C to 35 C (hyperthermic group) or 23 C (control group) for 7 days. In Experiment 1, hens were given a single injection of either saline, 40 mg, or 80 mg Mg-Asp-HCl. Experiment 2 hens received a single injection of saline, 40 mg Mg-Asp-HCl, or twice daily injection of 40 mg Mg-Asp-HCl. In both experiments, heat-stressed hens had elevated body temperature and reduced body weight, feed consumption, and circulating mean Mg concentrations. Hyperthermic hens also had reduced egg weights in Experiment 1. A single daily injection of 40 mg of Mg-Asp-HCl significantly reduced body weight loss in heat stressed hens by 41 and 51%, in Experiment 1 and 2, respectively, when compared with heat-stressed hens not receiving Mg-Asp-HCl (controls). The Mg-Asp-HCl treatment did not affect overall feed intake, egg production, or body temperature in either experiment. The highest dose of Mg-Asp-HCl (80 mg) elevated circulating magnesium concentrations. A single daily injection of 80 mg of Mg-Asp-HCl or twice daily injections of 40 mg Mg-Asp-HCl did not provide any additional benefit when compared with a single daily dose of 40 mg. The antistress effects of Mg-Asp-HCl are apparent in these experiments as evidenced by the increased body weight of heat-stressed hens. Use of this compound may prove to be beneficial in maintaining the performance characteristics of poultry exposed to elevated ambient temperature.
|
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:citationSubset |
IM
|
| pubmed:chemical | |
| pubmed:status |
MEDLINE
|
| pubmed:month |
Nov
|
| pubmed:issn |
0032-5791
|
| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:volume |
69
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
1862-8
|
| pubmed:dateRevised |
2008-11-21
|
| pubmed:meshHeading |
pubmed-meshheading:2087447-Animals,
pubmed-meshheading:2087447-Aspartic Acid,
pubmed-meshheading:2087447-Body Temperature,
pubmed-meshheading:2087447-Chickens,
pubmed-meshheading:2087447-Eating,
pubmed-meshheading:2087447-Female,
pubmed-meshheading:2087447-Hot Temperature,
pubmed-meshheading:2087447-Magnesium,
pubmed-meshheading:2087447-Oviposition,
pubmed-meshheading:2087447-Poultry Diseases,
pubmed-meshheading:2087447-Stress, Physiological,
pubmed-meshheading:2087447-Weight Loss
|
| pubmed:year |
1990
|
| pubmed:articleTitle |
Magnesium-aspartate-hydrochloride reduces weight loss in heat-stressed laying hens.
|
| pubmed:affiliation |
Department of Poultry Science, Texas A&M University, College Station 77843.
|
| pubmed:publicationType |
Journal Article
|