In order to assess chronic stress in entire and castrated male pigs and to describe effects of a provision of grass silage in those pigs, a 2 × 2 × 2 factorial experiment comprising the factors castration, chronic intermittent social stress and provision of grass silage was carried out with 147 growing-finishing pigs from 25.6 to 102.1 kg body weight. The experimental design allowed investigating interactions between the three factors, but only few were statistically significant. Stress exposure consisted of repeated short-term confrontations with unfamiliar pigs and short-term separations. Carcasses of stress-exposed pigs had thicker backfat, lower lean meat percentage and a different fatty acids composition of the adipose tissue. While entire males differed strongly from castrates in performance, carcass characteristics and adipose tissue properties, we found no evidence for an increased level of chronic stress in entire males compared to castrates. Provision of grass silage increased stomach weight and reduced dressing percentage, but did not impair performance, adipose tissue properties or meat quality.

为了评估整个和去势雄性猪的慢性压力并描述在这些猪中提供青贮饲料的效果，进行了一个2×2×2阶乘实验，包括去势因素，慢性间歇性社会压力和青贮饲料的供应淘汰了147头体重在25.6至102.1千克之间的育肥猪。实验设计允许调查这三个因素之间的相互作用，但只有极少数具有统计学意义。压力暴露包括与陌生猪的反复短期对抗和短期分离。承受压力的猪的cas体具有较厚的后脂肪，较低的瘦肉率和脂肪组织中不同的脂肪酸组成。虽然整个男性的cast割表现与strongly割有很大的不同，体特征和脂肪组织特性，我们没有证据表明与cast割相比，整个雄性的慢性应激水平增加。提供草料青贮饲料可增加胃部重量并减少敷料百分比，但不会损害性能，脂肪组织特性或肉质。