Document Detail

Magnesium proteinate is more protective than magnesium oxide in heat-stressed quail.
MedLine Citation:
PMID:  15987857     Owner:  NLM     Status:  MEDLINE    
We evaluated the effects of dietary supplementation with Mg-oxide and Mg-proteinate on performance; nutrient digestibilities; malondialdehyde (MDA) concentrations in serum, liver, and thigh meat; and serum cholesterol and triacylglycerol concentrations in Japanese quail (Coturnix coturnix japonica) exposed to high ambient temperature. The birds (n = 360; 10 d old) were randomly assigned to 12 treatment groups consisting of 6 replicates of 5 birds each in a 2 x 2 x 3 factorial arrangement (temperature, Mg source, Mg level). Birds were maintained in temperature-controlled rooms at 22 degrees C for 24 h/d or 34 degrees C for 8 h/d (0900-1700 h) and fed a basal diet or that diet supplemented with 1 or 2 g Mg-oxide or Mg-proteinate/kg of diet. Heat exposure decreased (P = 0.0001) live weight gain, feed intake, feed efficiency, and carcass weight in quail fed the basal diet. A linear increase in feed intake (P = 0.008) and body weight (P = 0.001), and improvements in feed efficiency (P = 0.001), carcass weight (P < 0.0001), digestibility of dry matter, organic matter, crude protein, and ether extract were found in Mg-supplemented, heat-stressed quail. The effects of Mg-proteinate were greater than those of Mg-oxide (P < or = 0.0001). Serum Mg (P = 0.001) concentration increased, whereas the concentration of MDA in serum (P = 0.0001), liver (P = 0.04), and thigh meat (P = 0.0001) and serum triglyceride and cholesterol concentrations decreased linearly (P = 0.001) with the level of Mg in the diet. Interactions between dietary Mg source, temperature, and level of supplementation (P < or = 0.05) were found for several variables. Results of the present study suggest that supplementation with Mg-proteinate is more protective than Mg-oxide in reducing the negative effects of heat stress in quail.
N Sahin; M Onderci; K Sahin; G Cikim; O Kucuk
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of nutrition     Volume:  135     ISSN:  0022-3166     ISO Abbreviation:  J. Nutr.     Publication Date:  2005 Jul 
Date Detail:
Created Date:  2005-06-30     Completed Date:  2005-08-23     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0404243     Medline TA:  J Nutr     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1732-7     Citation Subset:  IM    
Veterinary Control and Research Institute, Faculty of Veterinary Science, Elazig, Turkey.
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MeSH Terms
Animal Feed
Dietary Proteins
Dietary Supplements*
Heat Stress Disorders / physiopathology,  prevention & control*
Magnesium / administration & dosage,  pharmacology*
Magnesium Oxide / administration & dosage,  pharmacology*
Reg. No./Substance:
0/Dietary Proteins; 1309-48-4/Magnesium Oxide; 7439-95-4/Magnesium

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