fn Partíal Fulfillnent - MSpace

of the total LYS and ARG r^res presen! in these fractions
(Teble l; Colwnn D). the relativel-v- hígh Levels of j,YS and
ARG in bran and shorts reflected the high concentrati-on of
aleurone protein in bran ånd shorts, since nos.a, if not al1
aleurone protein is found in these frsctions (Hinton et al..
l-Çll; Shetler et å1. , L9l+7).
Protein in aleurone celIs (albumin and giobulin) may
be of linrited di-gestibilit¡r sínce the thick cellulosic cell wall
of these cells is thought to interfere with digestion of the
protein that is contafned in these cel1s. A certain anount of
this protein may also be tíghtly bound Lo the cellulosic nratrix
of the aleì,rrone ce1ls (Saunders and Kohler, I9?Z). Saunders
et aI. (f969) fed bran from hard red spring wheat to chicks.
the contents of the lov¡er intesti_ne contained intact ce1ls
from the aleurone layer. ÐÍgestion of bran consists essentially
of the breakdown and absorption of the contents fron the
aleurone cells which occurs only when the cetl wa11s are
ruptured. The nunber of intact aleurone cells remaining in
the lower intestine and in the faeces seemed. to be affected by the
variety of wheat from which bran was d.erived and by the physical
form in whi.ch bran was fed. Pel1eted feed resulted in a larger
number of ruptured. aleurone ce1ls than mash based on mj-croscopi.c
examinatÍon of intestinal contents and faeces.
The true amino acid availabilities from corn, wheat
and barley fed io gror¡ing pigs are shown in Table 4. fn general ,
L2