Dietary protein and carbohydrate effects on blood parameters related to stress in cat.
Adult cats were adapted to hypoglucidic semi-purified diets containing casein or soya as the protein source to study the effects of a 2 hr immobilization period. Body weight of cats fed hypoglucidic diets was significantly decreased. The control casein group showed higher plasma dopamine-beta-hydroxylase activity but lower pyridoxal 5'-phosphate level than control soya group. Cats fed hypoglucidic casein diet, plasma glucose, insulin and pyridoxal 5'-phosphate levels were increased whereas cats fed hypoglucidic soya diet, pyridoxal 5'-phosphate levels were decreased and dopamine-beta-hydroxylase activity increased when data were compared to their respective control groups. A 2 hr immobilization period induced hyperglycemia in all groups whereas cats fed soya diets, plasma insulin level and dopamine-beta-hydroxylase activity were significantly increased and pyridoxal 5'-phosphate content significantly decreased. These results demonstrate that dietary casein and soya protein might be differentiated on a physiological basis and immobilization emphasized the biochemical disturbances observed between the groups thus suggesting a greater resistance to stress in casein groups than in soya groups.
Thibault
L
L
Laboratoire de Neurochimie et de Nutrition, Faculté des Sciences de l'Agriculture et de l'Alimentation, Université Laval, Ste-Foy, Québec, Canada.
Roberge
A G
AG
D000818:Animals; D001143:Arousal / Q000502:physiology*; D001786:Blood Glucose / Q000378:metabolism; D002364:Caseins / Q000008:administration & dosage; D002415:Cats; D004040:Dietary Carbohydrates / Q000008:administration & dosage*; D004044:Dietary Proteins / Q000008:administration & dosage*; D004299:Dopamine beta-Hydroxylase / Q000097:blood; D005260:Female; D007328:Insulin / Q000097:blood; D008297:Male; D014674:Plant Proteins, Dietary / Q000008:administration & dosage; D011732:Pyridoxal Phosphate / Q000097:blood; D030262:Soybean Proteins; D013315:Stress, Psychological / Q000201:enzymology*
D001786:Blood Glucose; D002364:Caseins; D004040:Dietary Carbohydrates; D004044:Dietary Proteins; D007328:Insulin; D014674:Plant Proteins, Dietary; D030262:Soybean Proteins; D011732:Pyridoxal Phosphate; D004299:Dopamine beta-Hydroxylase