Hydrolysed feather protein as a source of amino acids for laying hens
- 1 September 1977
- journal article
- research article
- Published by Taylor & Francis in British Poultry Science
- Vol. 18 (5) , 523-526
- https://doi.org/10.1080/00071667708416396
Abstract
1. The value of hydrolysed feather protein (HFM), included at 70 g/kg in a wheat‐based diet, as an amino acid source for laying hens was determined. 2. Egg production was reduced in hens fed on diets containing HFM owing to a deficiency in lysine, methionine and tryptophan. 3. Supplementation of the diet containing HFM with 3'0 g lysine (as L‐lysine HC1), 0.7g DL‐methionine and 0.5g L‐tryptophan per kilogram, resulted in a daily egg mass output similar to that achieved with a conventional layers’ diet.This publication has 6 references indexed in Scilit:
- Hydrolysed feather protein as a source of amino acids for broilersBritish Poultry Science, 1977
- Autoclaved rice bran in layers’ dietsBritish Poultry Science, 1977
- Studies on Poultry By-Product Meals in Broiler and Layer RationsWorld's Poultry Science Journal, 1975
- Processed Feather and Hog Hair Meals as Sources of Dietary Protein for the Laying Hen with Emphasis on Their Use in Meeting Maintenance NeedsPoultry Science, 1969
- Keratin as a Source of Protein for the Growing ChickPoultry Science, 1966
- Chemical Determination of TryptophanAnalytical Chemistry, 1948