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首页> 外文期刊>Journal of Animal Science >Effects of supplemental manganese on performance of growing-finishing pigs and pork quality during retail display.
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Effects of supplemental manganese on performance of growing-finishing pigs and pork quality during retail display.

机译：补充锰对零售展示过程中生长精加工猪和猪肉质量的影响。

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Crossbred barrows and gilts (n=168) were used to test the effects of supplemental Mn during the growing-finishing period on performance, pork carcass characteristics, and pork quality during 7 d of retail display. Pigs were blocked by BW and allotted within blocks to pens (5 pigs/pen in blocks 1, 2, 5, and 6, and 4 pigs/pen in blocks 3 and 4). A total of 36 pens was randomly assigned to 1 of 6 dietary treatments, where the basal diets were formulated with (PC) or without (NC) Mn in the mineral premix, and supplemented with 0 or 350 ppm (as-fed basis) of Mn from MnSO4 or a Mn-AA complex (AvMn). Pigs were slaughtered at a commercial pork packing plant when the lightest block of pigs averaged 113.6 kg. During fabrication, boneless pork loins were collected and transported to Oklahoma State University, where 2.5-cm-thick LM chops were packaged in a modified atmosphere (80% O2 and 20% CO2) and subsequently placed in display cases (2 to 4 degrees C) under continuous fluorescent lighting (1,600 lx) for 7 d. Pig performance was not (P>=0.44) affected by supplemental Mn; however, during the grower-II phase, pigs fed the basal diets including Mn consumed less (P<0.02) feed and tended to be more efficient (P<0.09) than pigs fed the basal diets devoid of Mn. Throughout the entire feeding trial, neither dietary nor supplemental Mn altered (P>=0.22) ADG, ADFI, or G:F. Chops from pigs fed the diets supplemented with MnSO4 received greater (P<=0.05) lean color scores and had a redder (greater a* and hue angle values), more vivid color than chops from pigs fed the diets supplemented with AvMn. Additionally, LM chops from pigs fed the PC diets supplemented with MnSO4 were darker (lower L* values; P<0.05) than chops from pigs fed the NC diets or PC diets supplemented with 0 or 350 ppm of AvMn. Even though discoloration scores were similar during the first 4 d of display, chops from pigs fed the PC diets supplemented with MnSO4 were less (P<0.05) discolored on d 6 and 7 of retail display than chops from pigs fed the PC or NC diets and diets supplemented with AvMn (dietary treatment x display time, P=0.04). Results of this study indicate that feeding an additional 350 ppm of Mn from MnSO4 above the maintenance requirements of growing-finishing pigs does not beneficially affect live pig performance but may improve pork color and delay discoloration of pork during retail display..
机译：用于在7 D零售显示期间，使用杂交禁令和吉尔茨（n = 168）来测试补充Mn期间的辅助Mn期间的性能，猪肉胴体特性和猪肉质量。猪被BW封闭，并在块内分配给钢笔（块1,2,5和6的5个猪/笔，4个猪/笔中的块3和4）。总共36个术术中的6个饮食治疗中的1个，其中基础饮食在矿物预混物中用（PC）或没有（NC）Mn配制，并补充有0或350ppm（以350ppm（以喂养为基础）来自MnSO4或Mn-AA复合物（AVMN）的Mn。当猪的最轻块平均为113.6千克时，猪在商用猪肉包装厂屠宰。在制造过程中，收集无骨猪肉腰部并运输到俄克拉荷马州立大学，其中2.5厘米厚的LM CHOPS包装在改性气氛（80％O 2和20％CO 2）中，随后置于显示案例（2至4℃） ）在连续荧光灯（1,600 Lx）下为7天。猪的性能不是（p> = 0.44）受补充Mn的影响;然而，在种植者-II阶段期间，饲喂基础饮食的猪在包括较少（P <0.02）的饲料中消耗的基础饮食（P <0.02）饲料，比饲喂缺乏Mn的基础饮食的猪更有效（P <0.09）。在整个饲养试验中，膳食和补充MN都不改变（p> = 0.22）ADG，ADFI或G：F。饲喂补充有MnSO4的饮食的猪的浓度较大（P <= 0.05）瘦颜色得分，并且具有比饲料补充有AVMN的饮食的猪的CHOPS更鲜艳的颜色。此外，来自补充有MnSO4的PI猪的猪的LM ChOPS比来自猪的猪饮食或补充有0或350ppm的PPM饮食的CHOP，饲喂MNSO4的PC饮食较暗（低l *值; P <0.05）。尽管在显示器的前4个d中的变色分数相似，但是从饲喂含有MnSO4的PC饮食的PIG的CHOPS较少（P <0.05）D 6和7的零售显示器，而不是饲喂PC或NC饮食的猪和补充有AVMN的饮食（膳食处理X显示时间，P = 0.04）。该研究的结果表明，从MNSO4喂养另外350ppm的Mn高于生长精加工猪的维护要求不会有利地影响活猪性能，但可以改善零售展示期间猪肉的猪色和延迟变色。

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