Table 4.
Least squares means for the effects of lubabegron1 (LUB) dose on calculated cumulative NH3 gas emissions (CCAGE) and CCAGE standardized by final body weight (BW) and hot carcass weight (HCW) over 56 d
| LUB (mg·kg−1 DM) | Difference from control2 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Variable | Control | 1.5 | 3.5 | 5.5 | SEM | Ptrt3 | PLin4 | PQuad5 | 1.5 mg·kg−1 vs. control | 3.5 mg·kg−1 vs. control | 5.5 mg·kg−1 vs. control |
| Final BW6,7, kg | 667.4 | 679.0 | 683.1 | 681.7 | 2.7 | <0.001 | <0.001 | <0.001 | 11.6 (1.7) 3,x | 15.7 (2.4) 3,y | 14.3 (2.1) 3,x,y |
| HCW6, kg | 408.0 | 419.3 | 423.9 | 425.1 | 1.4 | <0.001 | <0.001 | <0.001 | 11.3 (2.8) 3,x | 15.9 (3.9) 3,y | 17.1 (4.2) 3,y |
| NH3 gas emissions | |||||||||||
| CCAGE6, g· animal−1 | 6460 | 6375 | 6075 | 5752 | 120 | <0.001 | <0.001 | 0.047 | −85 (−1.3)x | −385 (−6.0)3,y | −708 (−11.0)3,z |
| Standardized by BW BW6,7, g·kg−1 | 9.68 | 9.39 | 8.89 | 8.44 | 0.15 | <0.001 | <0.001 | 0.641 | −0.29 (−3.0)3,x | −0.79 (−8.2)3,y | −1.24 (−12.8)3,z |
| Standardized by HCW6, g·kg−1 | 15.8 | 15.2 | 14.3 | 13.5 | 0.25 | <0.001 | <0.001 | 0.876 | −0.6 (−3.8) 3,x | −1.5 (−9.5) 3,y | −2.3 (−14.6)3,z |
1Experior, Elanco, Greenfield, IN, USA.
2Control values subtracted from treatment values. Values in parenthesis are percent change from Control.
3Different from Control P ≤ 0.05.
4Significance for linear contrast.
5Significance for quadratic contrast.
6Initial animal weight used as a covariate.
7Based on unshrunk BW.
x,y,zLeast squares means with different superscripts differ P ≤ 0.05.