Parish, Jane A.
Vann, Rhonda C.
Date of Degree
Graduate Thesis - Open Access
This experiment was conducted to assess the effects of either low or high trailer stocking density (SD) on cattle behavior. British x Continental steers (n = 200; mean BW = 361.53 ± 54.4 kg) were loaded onto one of two truck-towed trailers. Steer behavior and positional orientation were recorded by video camera (8 h). Aggressive behaviors were more frequent (P < 0.0001) in low (178 ± 34.46 kg BW/m2) than high (333 ± 31.84 kg BW/m2) SD. Chin-resting occurred more often (P < 0.05) in low SD, yet there was no difference (P = 0.98) between SD for mounting. There was a SD × trip effect for loss of balance (P < 0.05), ruminating (P < 0.0001), and lying behaviors (P < 0.0001). At both SD, side-left and side-right were the preferred (P < 0.05) standing orientations. These results suggest that SD can affect cattle behavior and orientation en route.
Jury, Lyndi L'Rae, "Effect of Trailer Stocking Density on Cattle Behavior during Truck Transport" (2013). Theses and Dissertations MSU. 1693.