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Effects of supplemental humic substances on growth performance, blood characteristics and meat quality in finishing pigs

机译：腐殖质补充剂对肥育猪生长性能，血液特性和肉品质的影响

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A total of forty-eight finishing pigs were used to determine the effects of humic substances (HS) on growth performance, blood characteristics, and meat quality. The finishing pigs were assigned randomly by weight to three treatments. The dietary treatments included: 1) Control (CON; basal diet), 2) HS1 (basal diet+5% humic substances) and 3) HS2 (basal diet+10% humic substances). Results of the whole experimental period showed that addition of 10% HS to the diet, significantly increased average daily gain (ADG) and gain/feed (G:F) (P<0.05). At the end of the experiment, the relative lymphocyte counts (% of total white blood cells) of pigs fed HS2 diet were higher (P<0.05) than that of pigs fed CON diet. The Minolta color parameter a* of pigs fed HS2 was similar to that of pigs fed HS1, however, it was higher (P<0.05) than that of pigs fed CON diet. The inclusion of either 5% or 10% HS significantly decreased backfat thickness (P<0.05). The marbling score was increased significantly (P<0.05) when diets were supplemented with HS at a level of 10%. The results of this study suggest that HS might be utilized as a feed additive in the diet. It could improve growth performance, relative lymphocyte counts and meat quality.
机译：总共使用四十八头肥育猪来确定腐殖质（HS）对生长性能，血液特性和肉质的影响。将肥育猪按体重随机分配给三种处理。饮食治疗包括：1）对照（CON;基础饮食）; 2）HS1（基础饮食+ 5％腐殖质）和3）HS2（基础饮食+ 10％腐殖质）。整个实验期间的结果表明，在饮食中添加10％的HS，可显着提高平均日增重（ADG）和增重/饲料（G：F）（P <0.05）。在实验结束时，饲喂HS2日粮的猪的相对淋巴细胞计数（占总白细胞的百分比）高于饲喂CON日粮的猪（P <0.05）。饲喂HS2的猪的美能达颜色参数a *与饲喂HS1的猪的相似，但它比CON饲喂的猪更高（P <0.05）。包含5％或10％的HS可显着降低后脂肪厚度（P <0.05）。当饮食中添加10％的HS时，大理石花纹得分显着增加（P <0.05）。这项研究的结果表明，HS可以用作饮食中的饲料添加剂。它可以改善生长性能，相对淋巴细胞计数和肉质。

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