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. 2021 Sep 22;99(10):skab269. doi: 10.1093/jas/skab269

Table 4.

Effect of bismuth subsalicylate and calcium ammonium nitrate on feedlot growth performance

Item1 Treatment2 SEM3 P-value4
U NIT UBS NITBS LOW-S SUL NPNS BSS BSS × NPNS
IBW5, kg 369 368 368 371 371 8.0 0.211 0.338 0.342 0.126
FBW5, kg 637 617 626 620 629 9.6 0.380 0.045 0.531 0.310
CAFSBW6, kg 636 618 626 620 629 11.2 0.429 0.055 0.555 0.344
Days 37–72
 ADG, kg 1.58 1.60 1.59 1.80 1.66 0.082 0.495 0.185 0.223 0.297
 DMI, kg 8.76 8.52 8.74 8.57 8.72 0.285 0.921 0.496 0.970 0.906
 G:F 0.184 0.191 0.184 0.210 0.195 0.0127 0.572 0.216 0.486 0.462
Days 72–107
 ADG, kg 1.85 1.77 1.69 1.62 1.73 0.113 0.423 0.473 0.148 0.965
 DMI, kg 10.47 9.69 9.99 9.54 10.35 0.213 0.643 0.001 0.076 0.353
 G:F 0.176 0.184 0.168 0.170 0.167 0.0107 0.493 0.637 0.256 0.733
Days 107–142
 ADG, kg 1.36 1.14 1.34 1.14 1.11 0.071 0.020 0.007 0.950 0.889
 DMI, kg 10.44 9.33 10.00 9.10 9.75 0.228 0.030 < 0.001 0.127 0.623
 G:F 0.131 0.122 0.135 0.125 0.113 0.0072 0.088 0.193 0.629 0.965
Days 0–171
 CAADG6, kg 1.47 1.37 1.42 1.36 1.42 0.037 0.309 0.041 0.446 0.537
 DMI, kg 9.41 8.77 9.10 8.69 9.06 0.122 0.036 < 0.001 0.095 0.313
 CAG:F6 0.156 0.156 0.156 0.157 0.157 0.0030 0.993 0.978 0.880 0.856

1Individual body weight data were recoded for initial and final weights (days 0 and 171), whereas pen weights were recorded for interim weights (days 37, 72, 107, and 142).

2U, Control (Urea at 0.68% with 0.28% RAS); NIT, Nitrate (eCAN at 2.0% with 0.28% RAS); UBS, Urea-Bismuth (Urea at 0.68% and BSS at 0.33% with 0.28% RAS); NITBS, Nitrate-Bismuth (eCAN at 2.0% and BSS at 0.33% with 0.28% RAS); LOW-S, Low sulfur (Urea at 0.68% with 0.14% RAS).

3n = 10 experimental units/treatment mean.

4Significance is declared at P < 0.05, tendencies are discussed at 0.05 < P < 0.10. SUL, Effect of sulfur; NPNS, Effect of non-protein nitrogen source; BSS, Effect of BSS; BSS × NPNS, Interaction between NPNS and BSS.

5IBW, Initial body weight with a common shrink (4%); FBW, Final body weight with a common shrink (4%).

6CAFSBW, Carcass-adjusted final shrunk body weight; CAADG, Carcass-adjusted average daily gain; CAGF, Carcass-adjusted gain to feed ration. Carcass-adjusted final body weight calculated as HCW divided by overall dressing percent and then multiplied by a common shrink (4%).