Document Detail


Temporal variations in blood glutathione peroxidase (GSHPx) activity in sheep at pasture in a Mediterranean area.
MedLine Citation:
PMID:  10204415     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The present study evaluates blood GSHPx activity in 18 sheep flocks at range, to identify those seasons with the highest risk of selenium deficiency. Samples were taken from 1108 15-day-old lambs during the two usual lambing periods in this geographical area (autumn-winter and spring-summer). The overall mean values in the first period (146.69 +/- 3.41 i.u./g Hb) was higher than in the second one (107.50 +/- 3.53 i.u./g Hb). This may be explained by the special features of the climate in the Mediterranean area, which allow an optimum growth of grass from October to May. Therefore, the lambs born in spring-summer are from pregnancies in months when feeding is based only upon grazing. However, lambs born in autumn-winter comes from ewes gestating during the summer, when supplementation with cereal grains is given. As a conclusion, lambs born in spring-summer in this area are at higher risk to selenium-deficiency related disorders.
Authors:
S Andres; M C Mañe; J Sanchez; R Barrera; A Jimenez
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Veterinary journal (London, England : 1997)     Volume:  157     ISSN:  1090-0233     ISO Abbreviation:  Vet. J.     Publication Date:  1999 Mar 
Date Detail:
Created Date:  1999-04-29     Completed Date:  1999-04-29     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  9706281     Medline TA:  Vet J     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  186-8     Citation Subset:  IM    
Affiliation:
Departamento de Medicina y Sanidad Animal, Facultad de Veterinaria, Universidad de Extremadura, Cáceres, Spain.
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MeSH Terms
Descriptor/Qualifier:
Animals
Glutathione Peroxidase / blood*
Mediterranean Region
Risk Factors
Seasons*
Selenium / deficiency*
Sheep
Sheep Diseases / enzymology*
Spain
Chemical
Reg. No./Substance:
7782-49-2/Selenium; EC 1.11.1.9/Glutathione Peroxidase

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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