Hydrolysed hog and cattle hair

Useful reference: 346

Hog hairs are more difficult to hydrolyse than feathers. The fibres disintegrate when pressure-cooked (3.5 kg/cm or 50 lbf/in ) at 148 C for thirty minutes. The processed product is a valuable feedstuff because of its high protein content, but it is deficient in methionine, lysine and tryptophan. The amount of the meal which can be used effectively under ordinary conditions is limited. The inclusion of more than 2-2.5% in poultry feed does not seem advisable. Also hydrolysed wool has been used as a replacement for soybean meal at levels of 2-5% with good results. Hydrolysed hair seems to be unsuitable for pigs.

					As % of dry matter
				DM	CP	CF	Ash	EE	NFE	Ca	P	Ref
Hydrolysed hog
hair, Cyprus				36.8	96.7	0.0	1.0	2.3	0.0	0.34	0.14	369
Hydrolysed wool
meal, China
(Taiwan province)				80.5	51.6	12.2	26.0	10.2	0.0			539
		Amino acid composition as % of crude protein
Hydrolysed pig hair											Ref	346
Arg	Cys	Gly	His	Ils	Leu	Lys	Met	Phe	Thr	Try	Tyr	Val
9.2	4.0	7.4	1.3	4.9	9.2	3.3	0.8	3.9	7.1	0.8	3.8	7.5

References

346, 369, 539