Amino acid-supplemented raw soybean diets for finishing swine.
Growth and carcass traits of finishing swine fed amino acid-supplemented raw soybean (RSB) diets were examined. Experiments 1 and 2 were identical and included the following treatments: 1) corn-soybean meal (SBM), 2) corn-RSB (lysine equal to Diet 1), 3) Diet 2 + .15% L-lysine (LYS), 4) Diet 3 + .1% L-threonine (THR), 5) Diet 3 + .05% L-tryptophan (TRP), 6) Diet 3 + .15% DL-methionine (MET) and 7) Diet 3 + THR + TRP + MET equivalent to Diets 4 to 6. The unsupplemented corn-RSB diet reduced (P less than .05) gain, gain:feed, plasma urea N, loin eye area, and percentage of muscling compared with the corn-SBM diet. The addition of LYS or LYS + TRP generally improved these response variables, whereas the addition of LYS + THR or LYS + MET tended to reduce gain and gain:feed compared with the LYS addition alone. The LYS + THR + TRP + MET addition resulted in growth and carcass traits that were intermediate between those of pigs fed the corn-RSB and the corn-SBM diets but not different (P greater than .05) from either. Experiment 3 included Diets 1, 2 and 7 from Exp. 1 and 2, in addition to the following treatment: corn-RSB + LYS + THR + TRP. The LYS + THR + TRP addition improved (P less than .05) growth and carcass traits compared with the LYS + THR + TRP + MET addition.(ABSTRACT TRUNCATED AT 250 WORDS)
Southern
L L
LL
Dept. Anim. Sci., Louisiana State Univ., Baton Rouge 70803.
Pontif
J E
JE
Watkins
K L
KL
Coombs
D F
DF
D000596:Amino Acids / Q000008:administration & dosage*; D000821:Animal Feed; D000818:Animals; D005260:Female; D005527:Food, Fortified; D008239:Lysine / Q000008:administration & dosage; D008297:Male; D008715:Methionine / Q000008:administration & dosage; D013025:Glycine max; D013552:Swine / Q000254:growth & development*; D013912:Threonine / Q000008:administration & dosage; D014364:Tryptophan / Q000008:administration & dosage; D015430:Weight Gain
D000596:Amino Acids; D013912:Threonine; D014364:Tryptophan; D008715:Methionine; D008239:Lysine