Liver and muscle proteolytic activity in field bean (Vicia faba L.) fed birds. Effect of vitamin E.
Liver and muscle proteolytic activities (cathepsin A and D) were measured in growing male chickens fed ad libitum over periods of 30 and 60 days on 20% protein diets containing either heated soybean (HSB, control) or raw field bean (RFB, Vicia faba L.) as the main sources of protein. Vitamin E (250 mg/100 g diet) was added or not to the RFB diet. It has been found that in comparison to control HSB-fed animals, RFB-fed birds showed a significant reduction in the rate of growth, together with a significant increase in the activities of both cathepsins A and D in liver and muscle. The addition of vitamin E to the RFB diet had no significant effect on either weight gain or liver and muscle proteolytic activities. The possible nature of these effects is discussed.
Santidrián
S
S
Departamento de Fisiología (División de Nutrición), Facultad de Farmacia, Universidad de Navarra, Pamplona (Spain).
Rodríguez
M L
ML
Larralde
J
J
D000818:Animals; D002268:Carboxypeptidases / Q000378:metabolism; D043402:Cathepsin A; D002402:Cathepsin D / Q000378:metabolism; D002403:Cathepsins / Q000378:metabolism*; D002645:Chickens; D007887:Fabaceae; D008099:Liver / Q000187:drug effects / Q000201:enzymology* / Q000254:growth & development; D008297:Male; D009132:Muscles / Q000187:drug effects / Q000201:enzymology*; D009929:Organ Size / Q000187:drug effects; D014674:Plant Proteins, Dietary / Q000494:pharmacology*; D010946:Plants, Medicinal; D014810:Vitamin E / Q000494:pharmacology
D014674:Plant Proteins, Dietary; D014810:Vitamin E; D002268:Carboxypeptidases; D002403:Cathepsins; D043402:Cathepsin A; D002402:Cathepsin D