Treatments were 6 and 12 wethers per 6 × 6 m pen and feeder with continuous access (Cont-6 and Cont-12, respectively); 2 and 4 wethers per feeder with 8 h/day access during daytime (Day-2 and Day-4, respectively); and 4 and 8 wethers per feeder with 16 h/day access at night (Night-4 and Night-8, respectively)