Evaluation of the Effect of Breed on Vitamin B6 Requirements of Chicks

Daghir, N. J.; Balloun, S. L.

doi:10.1093/jn/79.3.279

Cited by 32 publications

(12 citation statements)

References 8 publications

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“…Other workers (Goswami & Koblee, 1958;Daghir & Balloun, 1963) have reported a considerable reduction in blood aspartate aminotransferase activity for chickens fed on a pyridoxine-deficient diet.…”

Section: Serum Aminotransferase Activitiesmentioning

confidence: 91%

Serum aminotransferase activities and plasma free amino acid concentrations as criteria for pyridoxine nutritional status of chicks

Sifri¹,

Daghir²,

Asmar³

1972

BJN

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I . Experiments were conducted with young male broiler-type chicks to determine changes that may occur in serum aminotransferase activities and plasma free amino acid concentrations when chicks are given a purified diet containing levels of pyridoxine ranging from 1.1 to 7.1 2. Varying the dietary levels of pyridoxine had no significant effect on serum alanine aminotransferase (EC 2 . 6 . I . 2) activity whereas serum aspartate aminotransferase (EC 2.6. I . I ) activity decreased in chicks given diets containing less than 3 mg pyridoxine/kg diet.3. The effect of addition of pyridoxal phosphate to the serum (5opglo.z ml) before measuring the enzyme activity was also studied. I t was observed that a direct measure of the activity of serum aspartate aminotransferase is as sensitive an indicator of the pyridoxine nutritional status as the in vitro response to addition of pyridoxal phosphate. 4.Plasma free amino acid patterns were altered in the groups receiving inadcquatc levcls of pyridoxine ( 1 . 1 and 2.0 mg/kg). There were significant decreases in serine, taurine, a-amino butyric acid and 'asparagine -I-glutamine' concentrations, and increases in those of ornithine, glycine and cysteic acid.5 . The requirements of pyridoxine for body-weight gain, food consumption and food utilization in young growing chickens are less than for maximum serum aspartate aminotransferase Icvels. The increase in the ratio of g1ycine:serine in plasma appeared to be a consistent criterion of the pyridoxine-deficiency state in the young, growing chicken. mg/kg.

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Section: Serum Aminotransferase Activitiesmentioning

confidence: 91%

Serum aminotransferase activities and plasma free amino acid concentrations as criteria for pyridoxine nutritional status of chicks

Sifri¹,

Daghir²,

Asmar³

1972

BJN

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“…B REEDS of chickens may differ in utilization and metabolism of various nutrients (Nesheim and Hutt, 1962;Thornton and Whittet, 1962;Daghir and Balloun, 1963;Donovan, 1965;Yoshida el al., 1966). This may be the reason for a wide variation (Peeler, 1963) in the recommendations in the dietary phosphorus requirements.…”

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confidence: 99%

Response of Two Breeds of Chickens to Graded Levels of Dietary Phosphorus

Gardiner¹

1969

Poultry Science

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“…Fuller and Kifer (1959) reported that White Plymouth Rock chicks grew satisfactorily on a purified diet containing 3.3 mg. pyridoxine per kg. Daghir and Balloun (1963) found no difference among White Leghorn, Rhode Island Red and Vantress X Arbor Acre cross-bred chicks. All of the chicks grew adequately with 2.2 to 2.6 mg. of pyridoxine per kg.…”

Section: Discussionmentioning

confidence: 67%