PDF(Pubmed)
Abstract：
This study investigated the effects of lairage conditions on the welfare and meat quality of pigs during lairage periods. A total of 3070 finishing pigs were assigned to one of six groups arranged in two trials in a 2 × 3 factorial design according to the illuminance (under 40 lux (LX), over 40 lux (HX)) and stocking density (low density (LD), higher than 0.83 m2/100 kg; normal density (ND), 0.50-0.83 m2/100 kg; high density (HD), lower than 0.50 m2/100 kg) with high temperature (HT), higher than 24 °C; low temperature (LT), lower than 10 °C. Pigs stocked with HD showed lower aggression behavior and overlap behavior than those stocked with LD at LT. Pigs stocked with HD showed higher standing, sitting, and aggression behavior than those stocked with LD at HT. Pigs stocked with HD showed higher pH than those stocked with LD at LT. At HT, pigs stocked with LD showed higher pH, WHC, DL, and CL than those stocked with HD. At LT, pigs stocked with LD showed higher cortisol levels than those stocked with HD. However, pigs stocked with LD showed lower cortisol levels than those stocked with HD at HT. Based on the obtained results, stocking of too-high (lower than 0.50 m2/100 kg) density at HT and stocking of too-low (higher than 0.83 m2/100 kg) density at LT are generally not good for meat quality and animal welfare.
摘要：
本研究调查了圈养条件对圈养期间猪的福利和肉质的影响。根据照度（在40勒克斯（LX）以下，以2×3阶乘设计将总共3070头育肥猪分配到两个试验中排列的六组之一中，超过40勒克斯(HX))和放养密度(低密度(LD)，高于0.83m2/100kg；正常密度（ND），0.50-0.83m2/100kg；高密度（HD），低于0.50m2/100kg)高温(HT)，高于24°C;低温(LT),低于10℃放养HD的猪比在LT放养LD的猪表现出更低的攻击行为和重叠行为。放养HD的猪显示出较高的站立，坐着,和侵略行为比HT有LD的行为。在LT时，放养HD的猪的pH值比放养LD的猪高。在HT,储存LD的猪表现出更高的pH值，WHC,DL,和CL比那些储存有HD的。在LT,储存有LD的猪的皮质醇水平高于储存有HD的猪。然而,在HT时，用LD放养的猪的皮质醇水平低于用HD放养的猪。根据获得的结果，在HT下放养密度过高（低于0.50m2/100kg）和在LT下放养密度过低（高于0.83m2/100kg）通常不利于肉质和动物福利。
