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. 2022 Oct 15;6(4):txac140. doi: 10.1093/tas/txac140

Table 7.

Day effects of complete blood count for high-risk beef steers given metaphylaxis with a negative control, tulathromycin, ceftiofur, and florfenicol at arrival

Day1
Item Initial Interim Final SEM2 P-value
Red blood cells, M/µL 10.13a 9.97a 9.13b 0.067 <0.01
Hemoglobin, g/dL 13.24c 14.64b 14.91a 0.083 <0.01
Hematocrit, % 39.74c 43.97b 44.67a 0.271 <0.01
Mean corpuscular volume, fL 39.49c 44.15b 49.14a 0.286 <0.01
Mean corpuscular hemoglobin, pg 13.19c 14.70b 16.40a 0.093 <0.01
Mean corpuscular hemoglobin concentration, g/dL 33.43 33.21 33.40 0.127 0.29
Reticulocyte, K/µL 0.62b 1.78a 1.82a 0.146 <0.01
Reticulocyte, % <0.01b 0.01a 0.01a 0.003 0.01

1Initial = day 0 for blocks 1 and 2, interim = day 126 for block 1, day 123 for block 2, final = day 252 for group 1, day 242 for group 2.

2Largest standard error of least squares means.