The Bacterial Synthesis of Pyridoxin in Animals

The common bacteria that have been shown to synthesize this vitamin are Pseudomas fiuorescens, Proteus vulgaris and Clostridium butylicum (65). 

The Bacterial Synthesis op Pantothenic Acid in Animals 

Shortly after the identification of pantothenic acid with the chick antidermatitis factor (96) and as a necessary vitamin for the rat (97), evidence for its synthesis was reported in the rumen of ewes (49), cows (68), and calves (51). This synthesis is evidently appreciable since the pantothenic acid output in milk alone was about twice the intake (68). Pseudomonas fiuorescens, Proteus vulgaris, and Clostridium butylicum were found to synthesize pantothenic acid in a pure medium (65). 

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