Dietary replacement of inorganic trace minerals with lower levels of organic trace minerals leads to enhanced antioxidant capacity, nutrient digestibility, and reduced fecal mineral excretion in growing-finishing pigs
文献类型： 外文期刊
作者： Xiong, Yunxia 1 ; Cui, Bailei 1 ; He, Zhentao 1 ; Liu, Shuai 1 ; Wu, Qiwen 1 ; Yi, Hongbo 1 ; Zhao, Fei 2 ; Jiang, Zongyong 1 ; Hu, Shenglan 1 ; Wang, Li 1 ;
作者机构： 1.Guangdong Acad Agr Sci, Inst Anim Sci, Maoming Branch, State Key Lab Livestock & Poultry Breeding,Key Lab, Guangzhou, Peoples R China
2.DeBon Biotech Co Ltd, Hengyang, Hunan, Peoples R China
关键词： organic trace minerals; growing-finishing pigs; antioxidant capacity; apparent nutrient digestibility; fecal mineral excretion
期刊名称：FRONTIERS IN VETERINARY SCIENCE （ 影响因子：3.2； 五年影响因子：3.5 ）
ISSN：
年卷期： 2023 年 10 卷
页码：
收录情况： SCI
摘要： Introduction: More effective and environment-friendly organic trace minerals have great potential to replace the inorganic elements in the diets of livestock. This study aimed to investigate the effects of dietary replacement of 100% inorganic trace minerals (ITMs) with 30-60% organic trace minerals (OTMs) on the performance, meat quality, antioxidant capacity, nutrient digestibility, and fecal mineral excretion and to assess whether low-dose OTMs could replace whole ITMs in growing-finishing pigs' diets. Methods: A total of 72 growing-finishing pigs (Duroc x Landrace x Yorkshire) with an initial average body weight of 74.25 +/- 0.41 kg were selected and divided into four groups with six replicates per group and three pigs per replicate. The pigs were fed either a corn-soybean meal basal diet containing commercial levels of 100% ITMs or a basal diet with 30, 45, or 60% amino acid-chelated trace minerals instead of 100% ITMs, respectively. The trial ended when the pigs' weight reached similar to 110 kg. Results: The results showed that replacing 100% ITMs with 30-60% OTMs had no adverse effect on average daily gain, average daily feed intake, feed/gain, carcass traits, or meat quality (P > 0.05) but significantly increased serum transferrin and calcium contents (P < 0.05). Meanwhile, replacing 100% ITMs with OTMs tended to increase serum T-SOD activity (0.05 <= P < 0.1), and 30% OTMs significantly increased muscle Mn-SOD activity (P < 0.05). Moreover, replacing 100% ITMs with OTMs tended to increase the apparent digestibility of energy, dry matter, and crude protein (0.05 <= P < 0.1) while significantly reducing the contents of copper, zinc, and manganese in feces (P < 0.05). Discussion: In conclusion, dietary supplementation with 30-60% OTMs has the potential to replace 100% ITMs for improving antioxidant capacity and nutrient digestibility and for reducing fecal mineral excretion without compromising the performance of growing-finishing pigs.
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