These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Methionine requirement of kittens given amino acid diets containing adequate cystine.
    Author: Smalley KA, Rogers QR, Morris JG.
    Journal: Br J Nutr; 1983 May; 49(3):411-7. PubMed ID: 6860623.
    Abstract:
    Six purified amino acid diets containing 6.0 g cystine/kg and the following levels of L-methionine (g/kg diet): 2.1, 2.7, 3.3, 3.9, 4.5, 9.0 were presented to twelve weanling kittens (six male and six female) for six periods of 10 d each. Kittens were assigned to the diets in accordance with a 6 x 6 balanced Latin-square design. Body-weight gains of males and females attained apparent plateaux at 3.3 g methionine/kg diet and were respectively (mean +/- SEM) 22 +/- 4 and 18 +/- 2 g/d. Daily food intakes attained apparent plateaux at 2.7 g methionine/kg diet for male and female kittens and were 63 +/- 10 and 49 +/- 4 g/d respectively. Nitrogen retentions (calculated as dietary-N intake minus faecal- and urinary-N excretion) attained apparent plateaux at 3.9 g methionine/kg diet for both male and female kittens and were 0.85 +/- 0.15 and 0.65 +/- 0.05 g/d respectively. Previous work has shown that the kitten's L-methionine requirement, in a diet lacking cystine, is 7.5 g/kg diet. Our results indicate that the kitten's L-methionine requirement is 3.9 g/kg diet when 6.0 g cystine/kg is provided, thus approximately 50% of the animal's sulphur amino acid requirement can be met by cystine.
    [Abstract] [Full Text] [Related] [New Search]