Our objective was to evaluate effects of a disease feed intake pattern on gastric ulcerations. Eighty mixed sex pigs (27.9 ± 1.45 kg BW) were allotted to individual pens and 2 treatments using a complete randomized design. All pigs were fed a 450 µm ground corn-soybean meal diet. Period 1 (d 0-28), all pigs were fed ad libitum. In period 2 (d 29-42), 40 pigs were fed daily based on their individual body weight (averaging 1.45x maintenance) to mimic a disease feed intake (RF) profile. The remaining pigs stayed on ad libitum feed (Ad). Pigs were weighed at d 0, 28 and 42, and feed disappearance measured to calculate ADG, ADFI and G:F within period. At d 42, all pigs were euthanized, stomach pH recorded, and stomach ulcerations scored (0-3 scale, with 0 being normal). Performance, pH and ulceration frequency data were analyzed with pig as the experimental unit and the fixed effect of feeding level. Performance was not different in period 1 (P < 0.05). Compared with the Ad, RF pigs had lower ADG (1.10 vs 0.24 kg/d, P < 0.0001), ADFI (2.15 vs 0.85 kg/d, P < 0.0001) and G:F (0.51 vs 0.28, P < 0.0001) in period 2. Stomach pH was greater in the RF compared with the Ad pigs (P < 0.001). A greater percentage of Ad pig stomachs scored normal to mild on pars oesophagea ulcerations (85 vs 62%), while a greater percentage of RF pigs had a maximum score compared with the Ad (38 vs 15%, respectively). RF pigs had a higher frequency of severe stomach body ulcerations (score 3) compared with the Ad (20.5 vs 15.0%, respectively). These data suggest that a disease feed intake pattern exacerbates the incidence of gastric ulcerations in grower pigs fed a fine micron ground corn.

中文翻译：

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102 减少热量摄入会增加生长猪胃溃疡的发病率

我们的目标是评估疾病采食模式对胃溃疡的影响。80 头混合性猪（27.9 ± 1.45 kg BW）被分配到单独的猪栏和使用完全随机设计的 2 次处理中。所有猪都喂食 450 µm 磨碎的玉米-豆粕日粮。第 1 期 (d 0-28)，所有猪随意喂食。在第 2 阶段（第 29-42 天），每天根据个体体重（平均维持 1.45 倍）喂养 40 头猪，以模拟疾病采食量 (RF) 曲线。其余的猪保持自由采食（Ad）。猪在第 0、28 和 42 天称重，并测量饲料消失以计算期间内的 ADG、ADFI 和 G:F。在第 42 天，对所有猪实施安乐死，记录胃 pH 值，并对胃溃疡进行评分（0-3 级，0 为正常）。表现，以猪为实验单位和饲养水平的固定效应分析pH和溃疡频率数据。第一阶段的表现没有差异（P < 0.05）。与 Ad 相比，RF 猪的 ADG (1.10 vs 0.24 kg/d, P < 0.0001)、ADFI (2.15 vs 0.85 kg/d, P < 0.0001) 和 G:F (0.51 vs 0.28, P <0.0001) 和 G:F (0.51 vs 0.28, P <0.0001) 0.0001）在第 2 阶段。与 Ad 猪相比，RF 猪的胃 pH 值更高（P < 0.001）。与 Ad 相比，更大比例的 Ad 猪胃在食管部分溃疡上得分正常至轻度（85% 对 62%），而更大比例的 RF 猪的得分最高（分别为 38% 对 15%）。与 Ad (分别为 20.5 和 15.0%) 相比，RF 猪的严重胃体溃疡 (得分 3) 的频率更高。