View Full Table | Close Full ViewTable 1.

Summary of arrival characteristics and trial timelines for each of the 8 replicates variables among cattle treated with conventional management (CONV; received metaphylaxis and visual observation for bovine respiratory disease) and cattle managed using a remote early disease identification (REDI) system1 (no metaphylaxis; bovine respiratory disease treatment decisions based on the REDI system)

 
CONV
REDI
Trial days
Replicate Location2 Gender Arrive No. Arrival weight, kg No. Arrivalweight, kg Arrival weight, SEM Midpoint, DOF3 End, DOF
1 MO-1 Heifers May 13 51 199.2 52 196.5 15.5 33 59
2 MO-1 Bulls/steers Jul y 13 37 190.5 33 191.9 15.7 30 59
3 MO-1 Heifers Aug. 13 36 191.6 36 187.6 15.7 31 53
4 MO-1 Heifers Apr. 14 50 197.7 49 202.3 15.6 32 61
5 MO-1 Bulls/steers June 14 52 221.8 49 226.5 15.6 32 67
6 KS-1 Heifers Aug. 14 52 208.9 53 213.4 15.6 31 4
7 MO-2 Heifers Sept. 14 50 223.1 50 223.0 15.6 32 67
8 MO-2 Heifers Nov. 14 48 223.2 48 225.3 15.7 29 50
Total 376 207.0 370 203.0 10.5
1White et al. (2015).
2MO-1 = Missouri location 1; KS-1 = Kansas location 1; MO-2 = Missouri location 2.
3DOF = Days on Feed (days post-arrival).
4Replicate 6 ended prematurely at the preplanned trial midpoint of d 31 and all data collection stopped at that point.



View Full Table | Close Full ViewTable 2.

Statistical comparison of health and performance variables among cattle treated with conventional management (CONV; received metaphylaxis and visual observation for bovine respiratory disease [BRD]) and cattle managed using a remote early disease identification (REDI) system1 (no metaphylaxis; BRD treatment decisions based on the REDI system)2

 
Variables evaluated CONV REDI SE P-value
Performance
    No., calves/group 47.0 46.2 2.5 0.28
    ADG, kg (mid feeding period, approximately 30 d) 0.97 0.89 0.1 0.23
    ADG, kg (final, approximately 60 d) 1.09 1.09 0.1 1.00
    Wt, kg (arrival) 207.0 208.2 5.3 0.32
    Wt, kg (midpoint, approximately 30 d) 237.4 236.2 4.6 0.49
    Wt, kg (final, approximately 60 d) 271.0 270.9 7.3 0.95
Health parameters
    DOF to first BRD pull 15.8 9.1 1.16 <0.01
    Avg doses antibiotics (per hd) 1.67 0.75 0.12 <0.01
Health events ± 95% confidence interval
    BRD first pulls, % 47.8% (34.5–61.3) 51.8% (38.3–65.1) 0.28
    BRD second pulls, % 10.6% (5.7–18.8) 14.4% (8.0–24.4) 0.10
    BRD third pulls, % 4.1% (1.8–9.1) 5.1% (2.3–10.9) 0.48
    First treatment success, % 75.9% (65.1–84.2) 69.4% (57.8–79.0) 0.16
    Death loss, % 4.0% (2.4–6.5) 4.1% (2.5–6.6) 0.96
1White et al. (2015).
2All values represent least squares mean estimates from statistical models evaluating associations between treatment group and outcome of interest while accounting for lack of independence due to study site and replicate.



View Full Table | Close Full ViewTable 3.

Descriptive statistics on treatments for medical conditions other than bovine respiratory disease (BRD) as identified by a visual observer in both cattle treated with conventional management (CONV; received metaphylaxis and visual observation for BRD) and cattle managed using a remote early disease identification (REDI) system1 (no metaphylaxis; BRD treatment decisions based on the REDI system)

 
Replicate Treatment group Pinkeye Lameness Digestive/neurological Total cases not BRD
1 CONV 18 0 0 18
REDI 5 0 0 5
2 CONV 2 0 0 2
REDI 1 3 1 5
3 CONV 2 0 1 3
REDI 0 1 2 3
4 CONV 0 3 1 4
REDI 4 0 0 4
5 CONV 2 0 0 2
REDI 1 3 0 4
6 CONV 0 0 0 0
REDI 0 2 0 2
7 CONV 0 1 0 1
REDI 0 1 0 1
8 CONV 0 0 0 0
REDI 0 0 1 1
Total CONV 24 4 2 30
REDI 11 10 4 25
1White et al. (2015).



View Full Table | Close Full ViewTable 4.

Statistical comparison of rectal temperature at each identification (first, second, or third treatment) for bovine respiratory disease (BRD) among cattle treated with conventional management (CONV; received metaphylaxis and visual observation for BRD) and cattle managed using a remote early disease identification (REDI) system1 (no metaphylaxis; BRD treatment decisions based on the REDI system)2

 
Rectal temperature
BRD treatment CONV REDI SE P-value
First 40.6 40.3 0.08 <0.01
Second 40.5 39.8 0.15 <0.01
Third 40.6 40.0 0.20 <0.01
1White et al. (2015).
2All values represent least squares mean estimates from statistical models evaluating associations between treatment group and outcome of interest while accounting for lack of independence due to study site and replicate.