The keratinase-producing microbes can readily change the feather waste into more bioavailable peptides and amino acids. This study aimed to improve two-stage fermented meal-soybean meal product (TSFP) quality with five selected Bacillus strains Saccharomyces cerevisiae Y10, as well investigate effects of TSFP on growth performance, blood biochemistry, immunity nursery pigs. In trial 1, 100 hybr...

Keratinases are a group of proteolytic enzymes that display the capability of degrading insoluble keratin substrates such as feather resulting as poultry waste. Entrapment of crude/purified enzyme within a matrix is a common method for immobilization. An immobilized enzyme provides increased resistance to changes in conditions such as pH or temperature. It also allows enzymes to be held in plac...

background; feather waste is generated in large amounts as a by-product of commercial poultry processing. the main component of feather is keratin. the main purpose of this study was to identify bacillus spp. (the keratinolytic bacteria) that are able to degrade the feather for producing keratin. methods; bacillus spp. were isolated from the waste of poultries located in miyaneh city. the bacte...

The objective of this study was to determine the efficacy of a broad-spectrum protease enzyme, PWD-1 keratinase, upon supplementation to corn-soy starter diets on growth performance of broiler chickens. Three experiments were conducted. In each experiment, 1-d-old broiler chicks were randomly assigned to 24 cage pens of eight birds per pen in a completely randomized design of five experimental ...