The pantothenic acid content of poultry feeding stuffs

Abstract

A suitable modification of the microbiological method for assaying pantothenic acid was developed and the pantothenic acid content in various kinds of poultry-feeding stuffs determined by its use. To assure quantitative liberation of the total amount of the pantothenic acid from the samples it is recommended to digest the samples first with Clarase.Pantothenic acid content was determined in poultry feeds of animal origin, such as fish-meal, meat-scrap, liver-meal and different kinds of milk-powder. It is remarkable that different kinds of fish-meal differ markedly in their pantothenic acid content.

Section D. Nutritive value of milk and milk products

“…Conditions for the use of whey in the microbiological production of riboflavin with the Clostridium species, Eremothecium ashbyii, are discussed in (477), and for production of vitamin B 12 by Propionibacterium freudenreichi and LactobaciUus bulgaricus in (478). According to (137) acid whey contained on the dry basis in /xg./100 g.: thiamine 380, riboflavin 800, nicotinic acid 1200, pantothenic acid 3100, pyridoxin 420, biotin 20; (479) gives for pantothenic acid a value of 4240. The value quoted in (166) for pyridoxin in liquid whey is high (cf.…”

“…(494)). A value of 2-7 mg./lOO g. for pantothenic acid in dried buttermilk is given in (479). Buttermilk proved a good source of the unidentified factor involved in xanthine-oxidase activity (193).…”