Abstract:
MiLga (Jkzat9.a ismum) -Ia- - canbins 10 to 15% crude protein, hmmer because of the presse 05 tzxkkasd tamins (CT), the protein is not re&ily available to the animal (Gartner 1976). Asaresult, responses have been achievd in sheep to protein mpplem~.ts (MzEknkm et al, 1981), and to PE (Pritchard et al, 1985) which appears to b.i,rd +tandns increasw protein absorption (Jmes & Nmgan, 1977). TiMs parer reports the results of anexperimentwhichexminedtheeffectsof m3laSSeS &. ,& supplements (replicatd Latin @uare design) in conjunction with nitrogen, pk~~$$~r~ arad sulphur (NPS) in8 steers fed~gaadlabitun.~equantity~~given was An *Ae ratio of lg PEG : 2.5gCTbasedcmthepr&~~IM. Itdemnstrated that the inclusion of PEG as a .supplemnt for cattle consm&qmilgawiJlgreatlyenhanceDMI arki .Ix3teh uti.lmtionwithout affecting Cm. DMI Mcrease due to mlasses appmxhed significarce (KO.057). Hoq et al (1976) reporterlthatr~eswhen~l~eswasaddedtormlgadietscouldbe~~byits ash cxmtent, tkmgh Ca, Co, Cu, Fe, K, !Q, m, Na and Znhavehad noeffect (E&y eta& 1976; &&nimn et al, 1981; Gardner & Nivm, 1978), and &Men&m et al (1981) suggest& thatonly33% of therespmsewas attributabletosULphur.?hemech~ associatedwith therespmsestormlasses inthis~imentareunkmm, howevermlass~maycontaina tannin mnbining substance. Since PEG is not digested by rminants (@exber et al, U53), the r-s to PEG are cmsidered tobeduetothembeingbaurd inawm cU@let, resulting in increased protein utilisation. Hmever the sit& at which this occurstimt~. Gartner, R&W. arii Eunmd, 1,s. (X976) Aust. Vet J. 52:194-l% Gartner, R.J.W. and Mmn, D.R. (1978) &st. J, Eq @ii% Anim. Hi&. 18:768-772 Eaey, W.A., Mxtm, B.W. a113 mtwistle, K.W. (1976) Proc. Aust. Soc. &. prod. lk377-380 &mes, W.T. M !&ngan/ J.L. (1977) J. Sci. Fd. Agric. 28:3X-136 tkZ%imn, N.P., Niven, D.R, Cm&her, D., Gartner,R.J.W. arid Mxphy, GA (1981). Aust. J. E3q? ZQric. Anim. R&b. 2k404-409 Pri+M, D.A.,kiden, G.C. a& E&ins, P.S. (1985) mepnt *, Anim, &&tr, w., Armidale Z@exber, I., I&&n, S. and Ekmn, J. (1953) K. Lantbnkshqsk Ann. 20:337-344 * Queensland Depadmnt of Primary -tries, P.O. m 282, m. 4470. 28A
