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Reduced glutathione concentration in relation to the age and weight of New Hampshire and White Leghorn embryos



Reduced glutathione concentration in relation to the age and weight of New Hampshire and White Leghorn embryos



Poultry Sci 37(4): 914-924



Total reduced glutathione (GSH) contents in 10-or-12-to-20-day New Hampshire and White Leghorn embryos were compared in 2 experiments. The highest concentration of GSH per unit weight occurred on the 13th day of incubation in the New Hampshire embryos and on the 14th day in White Leghorn embryos. Heterogonic analyses indicates 3 distinct rates of GSH accretion when compared to embryo weights: In embryos weighing from about 2 to 10 g, the hetergonic constant or ratio of rate of increase in GSH to rate of embryonic growth is above unity; in embryos weighing from about 10 to 19 g, the ratio is much less than one; and in embryos weighing from about 20 to 35 g, the ratio is again greater than one. In the 2 to 10 g embryos, the heterogonic constant for White Leghorns was significantly higher than for the New Hampshires, but in embryos weighing more than 10 g the 2 constants for the New Hampshires were significantly greater. Results suggest that the pattern of net synthesis of glutathione by the developing chick embryo is, in part, under hereditary control.

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Accession: 014163891

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DOI: 10.3382/ps.0370914


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