
TY  - JOUR
A1  - Pratt, LM 
A1  - Schiller, EE 
A1  - Bartlett, BE 
A1  - Garrow, C 
A1  - Crewther, WG 
T1  - Feasibility study of the utilization of processed sheepskins as a protein supplement to the diet of chickens
JF  - Australian Journal of Agricultural Research
JO  - Aust. J.  Agric. Res.
Y1  - 1972
VL  - 23
IS  - 5
SP  - 923
EP  - 933
KW  - 
UR  - https://doi.org/10.1071/AR9720923 
N2  - Dry woolled sheepskins were ground coarsely and treated with alkali or acid to render the protein digestible with proteases. A series of laboratory experiments showed that on autoclaving with 0 . 2 5M sulphuric acid or 0.10M caustic soda and subsequent neutralization the material was largely digestible with pepsin and a mixture of trypsin and chymotrypsin. The acid treatment caused little destruction of amino acids whereas the alkali treatment converted most of the cystine residues to products such as lanthionine. A bulk preparation obtained by boiling in 4M sulphuric acid for 1 hr, neutralizing with lime, filtering, and drying had a similar composition but most of the tryptophan was destroyed during preparation. In a feeding trial with chickens this material was shown to be a suitable substitute for meat and bone meal as a protein supplement. 
ER  -

