Sodium requirement of adult cats for maintenance based on plasma aldosterone concentration

The sodium requirement of adult cats for maintenance was determined using a randomized block design of eight dietary sodium treatments (0.1, 0.4, 0.5, 0.66, 0.8, 1.2, 1.6 or 2.0 g Na/kg in a casein-lactalbumin-based purified diet) administered for periods of 4 wk. A total of 35 adult specific-pathog...

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Bibliographic Details
Published in:The Journal of nutrition 1999-02, Vol.129 (2), p.419-423
Main Authors: Yu, S, Morris, J.G
Format: Article
Language:English
Subjects:
aldosterone
Aldosterone - blood
Animals
Biological and medical sciences
blood plasma
Body Weight
Cats
Cats - physiology
diet
dose response
Drinking
Eating
experimental diets
Feces - chemistry
Feeding. Feeding behavior
Female
food intake
Fundamental and applied biological sciences. Psychology
Male
nutrient balance
nutrient requirements
Nutritional Requirements
Plasma
Sodium
Sodium - blood
Specific Gravity
Studies
Urine
Vertebrates: anatomy and physiology, studies on body, several organs or systems
water intake
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Summary:The sodium requirement of adult cats for maintenance was determined using a randomized block design of eight dietary sodium treatments (0.1, 0.4, 0.5, 0.66, 0.8, 1.2, 1.6 or 2.0 g Na/kg in a casein-lactalbumin-based purified diet) administered for periods of 4 wk. A total of 35 adult specific-pathogen-free domestic shorthaired cats (26 males and 9 females, 1.5-3 y of age) was given an equilibration diet (2 g Na/kg) for 14 d before assignment (or reassignment) to the treatments. A total of 12 cats (8 males, 4 females) was randomly assigned to the lowest six levels of sodium, and four cats to the highest two sodium levels. Cats consuming the diet containing 0.1 g Na/kg had significantly elevated aldosterone concentration in plasma, and packed cell volume. In addition, these cats exhibited anorexia, body weight loss, reduced urinary specific gravity and sodium excretion, and had a negative sodium balance. However, adult cats did not develop polydypsia and polyuria reported in sodium-deficient kittens. Cats given the diet containing 0.66 g Na/kg did not have an increased packed cell volume, but aldosterone concentration in the plasma was significantly elevated. However, cats given diets containing >(or)= 0.8 g Na/kg had plasma aldosterone concentrations
ISSN:0022-3166
1541-6100
DOI:10.1093/jn/129.2.419