Table 2.
The ANOVA test analysis of various factors influencing the EC
| Factor | Level | Number | EC_1 | EC_2 | EC_3 | EC_ave |
|---|---|---|---|---|---|---|
| Farm | 1 | 346649 | 9.371 ± 0.673A | 9.378 ± 0.671A | 9.376 ± 0.671A | 9.371 ± 0.610A |
| 2 | 332941 | 9.342 ± 0.674A | 9.373 ± 0.673A | 9.373 ± 0.673A | 9.376 ± 0.611A | |
| 3 | 369546 | 9.382 ± 0.675A | 9.373 ± 0.672A | 9.378 ± 0.673A | 9.374 ± 0.615A | |
| Year | 2021 | 513862 | 9.474 ± 0.672B | 9.474 ± 0.675B | 9.474 ± 0.672B | 9.474 ± 0.607B |
| 2022 | 534713 | 9.274 ± 0.684A | 9.274 ± 0.661A | 9.274 ± 0.657A | 9.274 ± 0.601A | |
| Season | Spring | 337040 | 9.287 ± 0.668A | 9.248 ± 0.667B | 9.254 ± 0.671B | 9.263 ± 0.609B |
| Summer | 263005 | 9.477 ± 0.679B | 9.413 ± 0.674C | 9.402 ± 0.675C | 9.430 ± 0.606C | |
| Autumn | 202002 | 9.483 ± 0.662C | 9.414 ± 0.667C | 9.423 ± 0.664D | 9.440 ± 0.601D | |
| Winter | 246528 | 9.285 ± 0.657A | 9.218 ± 0.654A | 9.246 ± 0.657A | 9.250 ± 0.598A | |
| First calving age | 22–24 | 104845 | 9.305 ± 0.622B | 9.250 ± 0.626B | 9.248 ± 0.626B | 9.268 ± 0.562B |
| 24–26 | 74790 | 9.532 ± 0.479E | 9.466 ± 0.611E | 9.486 ± 0.464E | 9.495 ± 0.274E | |
| 26–28 | 533015 | 9.286 ± 0.675A | 9.231 ± 0.679A | 9.237 ± 0.675A | 9.251 ± 0.607A | |
| 28–30 | 197600 | 9.414 ± 0.675C | 9.354 ± 0.671C | 9.362 ± 0.672C | 9.377 ± 0.611C | |
| 30–32 | 62739 | 9.515 ± 0.687D | 9.456 ± 0.692D | 9.465 ± 0.686D | 9.479 ± 0.617D | |
| 32–34 | 39251 | 9.710 ± 0.682F | 9.654 ± 0.692F | 9.664 ± 0.679F | 9.676 ± 0.612F | |
| Parity | 1 | 376314 | 9.040 ± 0.553A | 8.999 ± 0.550A | 8.992 ± 0.545A | 9.010 ± 0.488A |
| 2 | 285091 | 9.443 ± 0.656B | 9.370 ± 0.653B | 9.383 ± 0.653B | 9.399 ± 0.586B | |
| 3 | 143330 | 9.605 ± 0.667C | 9.535 ± 0.676C | 9.552 ± 0.670C | 9.564 ± 0.599C | |
| 4 | 101731 | 9.602 ± 0.640C | 9.541 ± 0.650D | 9.558 ± 0.642D | 9.567 ± 0.572C | |
| 5 | 142109 | 9.708 ± 0.654D | 9.654 ± 0.665E | 9.669 ± 0.658E | 9.677 ± 0.582D | |
| DIM | 5–100 | 364183 | 9.375 ± 0.651 | 9.375 ± 0.649 | 9.375 ± 0.649 | 9.375 ± 0.589 |
| 101–200 | 483725 | 9.355 ± 0.674 | 9.355 ± 0.673 | 9.355 ± 0.673 | 9.355 ± 0.612 | |
| 201–305 | 200667 | 9.407 ± 0.712 | 9.407 ± 0.707 | 9.407 ± 0.708 | 9.407 ± 0.642 | |
| BCS | 2.25 | 5983 | 9.683 ± 0.667G | 9.627 ± 0.689G | 9.639 ± 0.680G | 9.650 ± 0.610G |
| 2.50 | 27549 | 9.643 ± 0.652F | 9.578 ± 0.661F | 9.591 ± 0.658F | 9.604 ± 0.588F | |
| 2.75 | 164788 | 9.526 ± 0.662D | 9.462 ± 0.669D | 9.475 ± 0.666D | 9.488 ± 0.599D | |
| 3.00 | 268385 | 9.376 ± 0.666C | 9.319 ± 0.664C | 9.328 ± 0.666C | 9.341 ± 0.603C | |
| 3.25 | 391975 | 9.325 ± 0.670B | 9.267 ± 0.665B | 9.271 ± 0.665B | 9.288 ± 0.605B | |
| 3.50 | 155857 | 9.258 ± 0.663A | 9.207 ± 0.659A | 9.211 ± 0.658A | 9.226 ± 0.598A | |
| 3.75 | 31765 | 9.369 ± 0.697C | 9.315 ± 0.696C | 9.316 ± 0.0694C | 9.333 ± 0.630C | |
| 4.00 | 2273 | 9.608 ± 0.750E | 9.554 ± 0.748E | 9.544 ± 0.735E | 9.569 ± 0.670E |
The mean and standard deviation of EC
EC_1 the EC at the first milking session in a day, EC_2 the EC at the second milking session in a day, EC_3 the EC at the third milking session in a day, EC_ave the daily average EC
The averages with the same letter between indicate that the difference is not significant, and those without the same letter indicate that the difference is significant (p < 0.05)