METHODS AND COMPOSITIONS FOR IMPROVING GROWTH OF MEAT-TYPE POULTRY

摘要

The present invention provides methods of improving growth performance, improving the efficiency of feed utilization, increasing feed digestibility, and decreasing mortality of immature and developing animals receiving animal feed. Methods of producing a crude keratinise enzyme extract and animal feed supplements for achieving the same are also provided.

主权项

1. A method of growing meat-type poultry, comprising:
feeding said meat-type poultry a corn-soybean meal feed as a poultry diet, said feed further comprising Bacillus licheniformis PWD-1 keratinase in an amount effective to enhance the weight gain of said meat-type poultry.