Further Evidence for an Unidentified Chick Growth Factor
نویسندگان
چکیده
منابع مشابه
Some properties of an unidentified chick growth factor found in condensed fish solubles.
In previous papers (1,2) evidence was presented to show that condensed fish solubles produced a marked increase in the growth rate of chicks on diets containing an adequate level of vitamins and essential amino acids. Berry, Carrick, Roberts, and Hauge (3) found that a water extract of fish solubles was also active in stimulating the growth of chicks. Very little other information on the proper...
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The complexity of the nutritive requirements of Lactobacillus casei is known. The organism develops slowly in synthetic or semisynthetic media such as the one described by Landy and Dicken (1942). Assay media for this organism therefore include crude supplements like peptone (Teply and Elvehjem, 1945) or trypsinized casein (Roberts and Snell, 1946). The active principle responsible for the shor...
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Weinman, Donald E. (University of Georgia, Athens), George K. Morris, and William L. Williams. Unidentified growth factor for a lactic acid bacterium. J. Bacteriol. 87:263-269. 1964.-Lactobacillus bulgaricus Georgia strain required an unidentified growth factor, named Georgia bulgaricus factor (GBF), when grown on a semisynthetic basal medium. Aqueous extracts of torula yeast and beef liver wer...
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Since a large number of developing eggs are employed in the making of vaccines and the propagation of viruses and rickettsiae, it is of primary importance to detect any spontaneous -infection occurring in chick embryos, especially with' those agents that are ifiterable. In the course of passing a strain of the virus of primary atypical pneumonia amniotically in the developing chick embryo (Eato...
متن کاملAn unidentified factor in liver required for reproduction in rats.
It has been known for some time that reproduction in rats is impaired when they are fed on purified diets, and may to some extent be restored by supplements of natural foods such as liver (see, for example, Mapson, 1932; Folley, Henry & Kon, 1947). This earlier work was carried out before the recognition of vitamin B,, as an essential nutrient. We too have reported on the effect on reproduction...
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ژورنال
عنوان ژورنال: Poultry Science
سال: 1948
ISSN: 0032-5791
DOI: 10.3382/ps.0270238