| Popis: |
BASED on a steam-pressure cooking technique advanced by Binkley and Vasak (1950), feathers now can be readily converted into a digestible, friable meal. Today, significant quantities of hydrolyzed feather meal (HFM) as well as poultry blood meal (PBM), and poultry by-products meal (PBPM) made from heads, feet and inedible viscera are available for use in mixed poulty rations. In the past several years many investigators have reported on the value of by-product meals in poultry rations, particularly HFM. Gerry and Smyth (1954), Wilder et al. (1955), Romoser (1955 Romoser (1956), Lillie et al. (1956), Naber and Morgan (1956) and Fuller (1956) all have successfully fed HFM at low levels to chicks. Gerry and Smyth (1954) and Harms and Goff (1957) employed HFM in hen rations without lowering production performance. PBPM was shown to be a good protein source in broiler rations by Romoser (1955 Romoser (1956), Naber and Morgan (1956) and Fuller . . . |
