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. 2023 Jan 28;101:skad035. doi: 10.1093/jas/skad035

Table 4.

Growth performance of nursery pigs fed diets with varying levels of zinc glycinate (ZnGly) and zinc oxide (ZnO) under F18+E. coli challenge1

Item NC2 PC ZnGly 400 mg/kg ZnGly
800 mg/kg		 ZnGly
1,200 mg/kg		 ZnO
2,500 mg/kg		 SEM P-value
ZnO
0 mg/kg		 ZnO
700 mg/kg		 ZnO
1,400 mg/kg		 ZnO
2,357 mg/kg		 NC vs. PC3 PC vs. ZnO 2,500 mg/kg ZnO
Linear4 		ZnO
Quad.4 		ZnGly
Linear5 		ZnGly Quad.5 Zn
Source6 		PC vs. Zn source7
BW, kg
 dayay 0 6.5 6.5 6.5 6.5 6.5 6.5 6.5 6.5 6.6 0.4 0.974 0.922 0.994 0.862 0.975 0.999 0.935 1.000
 day 7 7.2 7.0 7.4 7.2 7.0 7.2 7.2 7.1 7.2 0.4 0.520 0.407 0.421 0.244 0.850 0.216 0.509 0.182
 day 14 9.3 8.7 9.2 8.5 8.8 9.6 9.0 8.9 9.5 0.5 0.110 0.052 0.176 0.014 0.796 0.243 0.466 0.061
 day 21 12.1 12.0 12.6 11.4 11.8 12.7 12.1 11.8 12.6 0.6 0.870 0.360 0.552 0.023 0.585 0.294 0.959 0.267
 day 28 17.0 16.8 17.6 16.2 16.6 17.8 16.9 16.3 17.6 0.7 0.807 0.333 0.587 0.019 0.343 0.170 0.930 0.232
 ADG, g/d
 days 0 to 7 92 66 125 99 69 98 96 96 97 26 0.465 0.390 0.370 0.236 0.819 0.171 0.435 0.151
 days 7 to 14 308 244 256 168 259 338 260 250 343 31 0.065 0.007 0.002 0.004 0.842 0.645 0.017 0.068
 days 14 to 21 394 470 486 415 431 451 441 419 439 35 0.107 0.519 0.607 0.187 0.186 0.571 0.334 0.850
 days 21 to 28 736 689 717 691 677 724 690 642 713 31 0.263 0.555 0.882 0.204 0.196 0.185 0.930 0.454
 days 7 to 28 471 467 486 425 456 504 464 437 498 22 0.913 0.307 0.277 0.015 0.211 0.263 0.698 0.328
 Phase 18 200 155 191 133 164 218 178 167 210 20 0.076 0.038 0.113 0.005 0.765 0.197 0.458 0.043
 Phase 29 557 579 601 553 554 587 566 530 576 26 0.536 0.931 0.798 0.109 0.105 0.253 0.488 0.758
 Overall 375 367 396 343 359 403 372 349 393 19 0.776 0.323 0.538 0.013 0.328 0.154 0.914 0.219
ADFI, g/d
 days 0 to 7 150 123 165 153 126 169 146 130 130 22 0.362 0.826 0.971 0.170 0.985 0.168 0.234 0.347
 days 7 to 14 344 324 331 259 329 414 311 288 375 28 0.587 0.188 0.006 0.010 0.277 0.570 0.257 0.373
 days 14 to 21 579 606 601 523 545 626 558 524 604 43 0.631 0.966 0.497 0.064 0.109 0.727 0.957 0.934
 days 21 to 28 874 902 896 858 853 905 920 808 915 36 0.571 0.793 0.803 0.188 0.090 0.114 0.710 0.928
 days 7 to 28 579 611 609 547 576 648 596 540 631 29 0.421 0.607 0.174 0.022 0.066 0.310 0.584 0.776
 Phase 1 247 224 248 205 228 291 229 209 246 21 0.399 0.446 0.060 0.015 0.473 0.269 0.935 0.935
 Phase 2 707 754 749 691 699 766 739 666 759 35 0.335 0.916 0.591 0.074 0.068 0.309 0.826 0.996
 Overall 470 489 498 448 463 528 484 438 503 25 0.588 0.691 0.241 0.023 0.111 0.238 0.901 0.692
G:F
 days 0 to 7 0.48 0.38 0.60 0.61 0.50 0.57 0.60 0.56 0.66 0.13 0.549 0.114 0.750 0.738 0.348 0.283 0.743 0.102
 days 7 to 14 0.92 0.77 0.80 0.70 0.76 0.82 0.84 0.88 0.92 0.07 0.142 0.168 0.620 0.318 0.265 0.914 0.244 0.344
 days 14 to 21 0.70 0.78 0.81 0.80 0.79 0.73 0.79 0.81 0.73 0.05 0.170 0.362 0.187 0.589 0.790 0.900 0.188 0.767
 days 21 to 28 0.84 0.76 0.81 0.81 0.80 0.80 0.75 0.80 0.78 0.03 0.036 0.540 0.808 0.923 0.665 0.977 0.549 0.283
 days 7 to 28 0.82 0.77 0.80 0.78 0.79 0.78 0.78 0.81 0.79 0.03 0.222 0.556 0.604 0.867 0.375 0.977 0.760 0.382
 Phase 1 0.82 0.69 0.77 0.65 0.69 0.75 0.79 0.81 0.86 0.05 0.055 0.020 0.994 0.095 0.092 0.506 0.208 0.042
 Phase 2 0.79 0.77 0.81 0.80 0.80 0.77 0.77 0.80 0.76 0.03 0.575 0.816 0.274 0.749 0.700 0.920 0.205 0.632
 Overall 0.80 0.75 0.80 0.77 0.78 0.76 0.77 0.80 0.79 0.03 0.177 0.365 0.378 0.685 0.271 0.772 0.715 0.200

1Data represent the least square means of eight replications except for three treatments: 1) one pig in NC group, 2) one pig in the group fed ZnO at 2,500 mg/kg, and 3) one pig in the group fed ZnGly at 400 mg/kg and ZnO at 700 mg/kg. Pigs had to be removed due to severe BW loss following the IACUC guideline after the statistical confirmation as outliers.

2No challenge.

3F18+E. coli challenge on d 7 after weaning.

4Dose response effects of ZnO supplementation (ZnO at 0, 700, 1,400, and 2,357 mg/kg) with ZnGly at 400 mg/kg.

5Dose response effects of ZnGly supplementation [ZnGly at 0 (PC), 400, 800, and 1,200 mg/kg].

6ZnGly at 400 mg/kg vs. ZnO at 2,500 mg/kg.

7PC vs. ZnGly at 400 mg/kg + ZnO at 2,500 mg/kg.

8days 0 to 14.

9days 14 to 28.