The pantothenic acid content of poultry feeding stuffs

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.

Nutrition

Feeding Trials with laying Hens. J. Holmes Martin and W. M. Insko. Agric. Exp. Station, Lexington, Ky., Bulletin no. 294Part. I. Varying Percentages of Meat Scrap in the Mash for supplementing Milk.Summary:1.When Barred Plymouth Rock pullets were fed a shelled-com-skim-milk ration, supplemented with a mash containing meat scrap, the average production for three years was as follows: 2½ % meat scrap—170 eggs; 5 %—162.4 eggs; 7½ %—174 eggs; and 10 %—162.7 eggs. rrhe winter averages were: 2½% meat scrap—47.3 eggs; 5 %—48.4 eggs; and 10 %—44.4 eggs.

Nutrition

Meat and Bone By-Products, an investigation towards the establishment of Standards. By F. T. Shutt and S. N. Hamilton. Dom. of Canada Dep. of Agriculture. Bulletin 110. 49. Ottawa 1926.This bulletin presents for the first tilne in Canada a detailed review of those highly nitrogenous feeds — the output for the most part of the packing-house. Much confusion exists in respect to the meaning attached to the names under which they are sold. Contents Descriptions and figures of analyses of different samples of meat meal, meat scrap, digester tankage, meat and bone meal, meat and bone scrap, digester meat and bone tankage, bone meal, blood meal, cracklings, edible fish meal.