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Chronic ethanol intake in lactating rats: milk analysis.

R Sanchis, C Guerri

Comparative Biochemistry and Physiology. C, Comparative Pharmacology and Toxicology

|January 1, 1986

Summary

Chronic ethanol consumption in rats alters milk composition, increasing pH, protein, and lipids while decreasing lactose. Milk yield reduction impacts suckling nutritional status more than milk quality changes.

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Area of Science:

Biochemistry
Lactation Biology
Toxicology

Background:

Ethanol consumption during lactation can affect maternal physiology and milk production.
Understanding the impact of alcohol on milk composition is crucial for infant nutrition.
Previous studies have indicated potential alterations in milk due to maternal alcohol intake.

Purpose of the Study:

To investigate the effects of chronic ethanol consumption on rat milk composition and yield.
To assess the impact of ethanol-induced milk changes on suckling nutritional status.

Main Methods:

Rats were fed an ethanol liquid diet or a control diet throughout lactation.
Milk samples were collected at 5 and 15 days postpartum for analysis.
Blood ethanol levels were measured in ethanol-fed rats.
Milk composition (pH, protein, lipids, lactose) and yield were quantified.
Suckling nutritional status was evaluated.

Main Results:

Ethanol-fed rats exhibited high blood ethanol levels (up to 43 mM).
Milk from ethanol-fed rats showed increased pH, protein, and lipids, and decreased lactose compared to controls.
Chronic ethanol consumption led to a reduced milk yield in the dams.
Suckling nutritional status was more strongly correlated with milk quantity than quality.

Conclusions:

Chronic ethanol intake significantly alters rat milk composition and reduces milk yield.
The quantity of milk produced by alcoholic mothers is a more critical factor for suckling nutrition than the altered milk quality.
These findings highlight the detrimental effects of alcohol consumption on maternal-infant dyadic outcomes.

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