It was hypothesized that hybrid rye may replace corn in diets for growing and finishing pigs without impacting growth performance, carcass characteristics, or meat quality. A total of 128 pigs (23.69 ± 2.51 kg) were allotted to four treatments with eight replicate pens per treatment. Phases 1 and 2 diets were fed for 35 d each and phase 3 diets were fed for 27 d. Within each phase, pigs were fed a control corn and soybean meal diet or a diet in which 33%, 66%, or 100% of the corn in the control diet was replaced with hybrid rye. Average daily gain (ADG) and average daily feed intake (ADFI) decreased (linear, P < 0.05) in phase 1 with increased dietary inclusion of hybrid rye. In phase 3, gain:feed (G:F) increased and then decreased (quadratic, P < 0.05) with more hybrid rye in the diet. Overall ADG, ADFI, and G:F did not differ among treatments. Diet did not impact most carcass traits, but loin (visual) and backfat (instrumental L*) color were paler (linear, P < 0.05) with greater inclusion of hybrid rye in the diet. Organ weights increased (linear, P < 0.05) with increased dietary hybrid rye. In conclusion, pigs fed hybrid rye consumed less feed in phase 1, resulting in reduced ADG, but growth performance for the entire growing-finishing period did not differ among treatments. Hybrid rye may replace all the corn in growing and finishing pig diets without diminishing growth performance or carcass quality, but feed intake may be reduced at high inclusion rates.

中文翻译：

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生长肥育猪日粮中混合黑麦代替玉米的高添加率不会影响整体生长性能，并且大多数胴体性状不受杂交黑麦的影响

据推测，杂交黑麦可以替代玉米用于生长和育肥猪的日粮，而不会影响生长性能、胴体特征或肉质。总共 128 头猪 (23.69 ± 2.51 kg) 被分配到四个处理中，每个处理八个重复栏。第 1 期和第 2 期日粮分别饲喂 35 天，第 3 期日粮饲喂 27 天。在每个阶段，给猪喂食对照玉米和豆粕日粮或用杂交黑麦代替对照日粮中 33%、66% 或 100% 的玉米的日粮。在第 1 阶段，随着日粮中混合黑麦含量的增加，平均日增重 (ADG) 和平均日采食量 (ADFI) 下降（线性，P < 0.05）。在第 3 阶段，随着日粮中杂交黑麦的增多，增重：饲料 (G:F) 增加然后减少（二次方，P < 0.05）。总体 ADG、ADFI 和 G：F 在处理之间没有差异。日粮不影响大多数胴体性状，但随着日粮中混合黑麦含量的增加，腰部（视觉）和背膘（仪器 L*）颜色较淡（线性，P < 0.05）。器官重量随着日粮杂交黑麦的增加而增加（线性，P < 0.05）。总之，饲喂杂交黑麦的猪在第 1 阶段消耗的饲料较少，导致 ADG 降低，但整个生长期的生长性能在处理之间没有差异。杂交黑麦可以替代生长和育肥猪日粮中的所有玉米，而不会降低生长性能或胴体质量，但在高添加率下可能会降低采食量。05）在饮食中加入更多的杂交黑麦。器官重量随着日粮杂交黑麦的增加而增加（线性，P < 0.05）。总之，饲喂杂交黑麦的猪在第 1 阶段消耗的饲料较少，导致 ADG 降低，但整个生长期的生长性能在处理之间没有差异。杂交黑麦可以替代生长和育肥猪日粮中的所有玉米，而不会降低生长性能或胴体质量，但在高添加率下可能会降低采食量。05）在饮食中加入更多的杂交黑麦。器官重量随着日粮杂交黑麦的增加而增加（线性，P < 0.05）。总之，饲喂杂交黑麦的猪在第 1 阶段消耗的饲料较少，导致 ADG 降低，但整个生长期的生长性能在处理之间没有差异。杂交黑麦可以替代生长和育肥猪日粮中的所有玉米，而不会降低生长性能或胴体质量，但在高添加率下可能会降低采食量。