Factors Affecting Sulfate-Sulfur Utilization by the Young Chick

Sasse, C.; Baker, David H.

doi:10.3382/ps.0530652

Cited by 59 publications

(27 citation statements)

References 14 publications

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“…However, Gordon and Sizer (1955) obtained a growth response when chicks were fed purified diets deficient in cystine and supplemented with inorganic sulfate. These results were confirmed by Machlin and Pearson (1956) and Sasse and Baker (1974a) working under similar experimental conditions. Ross and Harms (1970) also reported a growth response in broiler chicks fed a high energy corn-soy diet deficient in methionine.…”

Section: Introductionsupporting

confidence: 92%

The Interrelationship Between Methionine, Choline, and Sulfate in Broiler Diets

1983

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Two experiments were conducted to study the interrelationships between methionine, choline, and inorganic sulfate in a corn-soybean meal diet. The basal diet contained 21% crude protein and 3264 kcal ME/kg and no supplemental methionine, choline, or potassium sulfate. A 2 X 2 X 2 factorial arrangement of treatments was used involving .24% DL-methionine, 1100 mg choline/kg, and .10% potassium sulfate. A total of 384 Cobb, male, feather-sexed chicks were fed the experimental diets for 3 weeks in each experiment. Supplementing the basal diet with potassium sulfate in the presence of choline or methionine resulted in a greater growth response than when either was supplemented alone. A consistent sulfate response occurred when the diet contained supplemental choline and no supplemental methionine. Results indicated that sulfate must be present for choline to spare a maximum amount of methionine.

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Section: Introductionsupporting

confidence: 92%

The Interrelationship Between Methionine, Choline, and Sulfate in Broiler Diets

1983

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“…On day 8 posthatching following an overnight fast, chicks originating from the cross of New Hampshire males and Columbian females were assigned to treatments. Information regarding selection and care of chicks prior to initiation of the assays and the assignment procedure has been outlined previously (Sasse and Baker, 1974a).…”

Section: Methodsmentioning

confidence: 99%

Efficacy of d-, l- and dl-Methionine for Growth of Chicks Fed Crystalline Amino Acid Diets

Katz

Baker

1975

Poultry Science

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Four assays employing young male chicks were conducted to evaluate the relative efficacy of D-, L- and DL-methionine and to estimate the requirement for D- and L-methionine when serving as the sole source of sulfur amino acids or when added to a diet containing 0.27% L-cystine. Crystalline amino acid diets containing 14.9% protein equivalent and 4200 kcal. M.E./kg. were used in all assays. L-methionine supported faster and more efficient gains than D- or L-methionine when fed at levels below thhe requirement. At levels of supplementation near the requirement, however, equal efficacy was attained. When serving as the sole source of sulfur amino acids, the requirement as estimated by least squares for optimal gain was 0.58% of the diet or 104 mg./day for L-methionine and 0.59% or 104 mg./day for D-methionine. In the presence of cystine, the requirements were estimated at 0.27% or 49 mg./day and 0.30% or 52 mg./day for L- and D-methionine respectively. The results indicate that at lower levels of supplementation, L-methionine is a better source of sulfur amino acids than D-methionine. On the other hand, L- and D-methionine appear to have equal efficacy when incorporated into diets that are only marginally deficient in sulfur-bearing amino acids.

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“…The basal level of methionine was only .25% in this experiment, so the methionine present was in the range of the chicks' requirement (.53%) (NRC, 1977) and not excessive. Sasse and Baker (1974) did not comment on this phenomenon and it is not clear if it were due to an imbalance, to a lack of cysteine immediately available for protein synthesis, or perhaps that the extra DL-methionine in the diet was not palatable. Any beneficial property of DLmethionine may be overcome by the growth depressing effect it has when added to this diet.…”

Section: Resultsmentioning

confidence: 85%

“…In spite of this difference in gain, the efficiency of utilization of DLmethionine and L-cystine were approximately equal when expressed as gain per mole of sulfur-containing amino acid ingested. In assay 2 of the Sasse and Baker (1974) study the substitution of .15% DL-methionine for .15% L-cystine resulted in a decrease in gain from 120 to 82 in 13 days (pooled SEM = 5.54 g). The basal level of methionine was only .25% in this experiment, so the methionine present was in the range of the chicks' requirement (.53%) (NRC, 1977) and not excessive.…”

Section: Resultsmentioning

confidence: 91%

Factors Influencing the Assessment of the Availability of Choline in Feedstuffs

et al. 1981

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Experiments were conducted to test the hypothesis that chicks fed diets designed to be first-limiting in choline will also respond to supplements of sulfur-containing amino acids and that the growth response of chicks fed a choline-limiting diet to a supplement of a feedstuff cannot be accepted as a reliable measure of the choline content of the feedstuff. Chicks fed 25% isolated soybean protein (ISP) diets that were severely limiting in choline showed a growth response to supplements of either choline or methionine. A bioassay was used to determine the availability of choline in soybean meal (SBM). Results indicated that including 10% SBM in the 25% ISP diet (at the expense of corn starch) drastically altered the chicks' response to choline. When 100 ppm choline was added to the 10% SBM diet, growth responses, compared to the original standard curve, indicated recoveries of 400 and 352% in two experiments. Additional studies indicated that chicks fed the 25% ISP + 10% SBM-based diet responded not only to choline additions but also to methionine, cystine, sulfate, and betaine additions. Further, it was shown that chicks fed a practical-type corn-soy-grease-based diet respond equally as well to supplements of 1% concentrated Steffens Filtrate, .2% L-methionine, or 800 ppm choline. The validity of assays of choline availability based on the assumption that choline is the first-limiting nutrient is questioned.

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Factors Affecting Sulfate-Sulfur Utilization by the Young Chick

Cited by 59 publications

References 14 publications

The Interrelationship Between Methionine, Choline, and Sulfate in Broiler Diets

The Interrelationship Between Methionine, Choline, and Sulfate in Broiler Diets

Efficacy of d-, l- and dl-Methionine for Growth of Chicks Fed Crystalline Amino Acid Diets

Factors Influencing the Assessment of the Availability of Choline in Feedstuffs

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