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cost nrr'nottrut of TDN ran hr drtermined. If the eyaet TDN content of the feed is knira-i. if •hould be used in the formula. If if is not known th^i an estimate ran be used. Forages Ion a hav equivalent basis'* will aver a«»e -bout S0% TDN. concentrates will average about 7S% TDN \fn«t dairv rattle feeds will fall between these eyfremes.
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A'««uro«* that bav costs $40 r»er T. • Citrus oulo costs $S0 oer T. and commercial ronccn*rstes rost
nnr. T. Y*hich of the three will be rbe cheapest source of cnerev supplying: nutrient*.
Hiv $?.00 fner cutl e<|uals <4 00 oer 100 Ih*. TDN. .so "trr>\n
Citrus Puln $2.SO I per cut 1
<t U oer 100 lbs TDN.
t cj.TDN 1
ial Vfiy $3.SO fner o•.»^ enn*|s <4 f>f\ ner 100 lh«. mv 7<i (r^TnVM
T’nder these onndition«,jfh"tru« "•■In would be the cheanesf source of energy. Consider*-Inn Tm<' be •riven to the nrofein content of the main energy feed used. The total ration must, be balanced. The oulns molasse^ and non-1e«otme fn...... are low in omtein. These will hare to he sunnlem-nted w’th we omtein than would letrume havs or letrume silage. Altering: the
30.3%