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  • Title: [Changes in the tryptophan content in the body of layers under the effect of an environmental temperature-humidity regimen].
    Author: Baĭkov B.
    Journal: Vet Med Nauki; 1976; 13(3):26-31. PubMed ID: 941391.
    Abstract:
    Experiments were carried out with a total of 60 layers of the White Plymouth Rock breed acclimatized to a temperature regime of 15 degrees C and a relative air humidity of 60 per cent and raised under zoohygiene conditions that met the requirements of the industrial technology for the production of eggs. The following temperature and moisture regimes of the air were tested in the course of seven days in a climatic chamber of the Zootron type: I--20 degrees C and 70 per cent; II--24 degrees C and 70 per cent; III--28 degrees C and 50 per cent; and IV--33 degrees C and 50 per cent. The birds of the control group were kept at 15 degrees C and 60-70 per cent relative air humidity. At the end of the first 24-hour period and the end of the seventh 24-hour period the birds were killed after a 12-hour starvation regime in order to determine the tryptophane content in the liver, blood serum, and heart muscle. It was found that under the Ist and IInd regime the amount of tryptophane in the organs studied was higher. The third and fourth regimes led to a dependable decrease in the content of tryptophane in these organs.
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