Factors Affecting Sulfate-Sulfur Utilization by the Young Chick

摘要: Abstract Eight-day-old male chicks were used in growth assays to determine the existence of and conditions for a response dietary inorganic sulfate. Purified crystalline amino acid diets first five practical corn-soybean meal final assay. A sulfate-free salt mixture was developed use assays. In study, obtained supplemental sulfate when sulfur acids (SAA) deficient (0.40% diet) cystine limiting, but no methionine or adequate (0.60%). second assay an approximately equal all cases where more limiting than methionine, regardless breadth ratio. addition, potassium sodium shown be equally efficacious as sources chick. It demonstrated Assays 3 4 that 0.1% needed elicit maximal fed 0.25% 0.15% cystine. Data from both 1 5 pointed conclusion there is requirement per se. supplementation could not feeding even though responded methionine. According diet analyses, should have been which perhaps suggests level basal too high allow