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首页> 外文期刊>Canadian Journal of Animal Science >Impact of rare earth element-enriched yeast on growth performance, nutrient digestibility, blood profile, and fecal microflora in finishing pigs
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Impact of rare earth element-enriched yeast on growth performance, nutrient digestibility, blood profile, and fecal microflora in finishing pigs

机译：稀土元素富集酵母对整理猪中生长性能，营养消化率，血液谱和粪便微生物的影响

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摘要

This study was conducted to evaluate effects of rare earth element-enriched yeast (RY) on growth performance, nutrient digestibility, blood profile, and fecal microbial flora in finishing pigs. A total of 100 finishing pigs [(Landrace x Yorkshire) x Duroc] were used in a two-phase feeding trial. Pigs were randomly assigned to five treatments according to their initial body weight (five pens per treatment, two gilts and two barrows per pen). Treatments were basal diets, free of antibiotics [negative control (NC)]; NC + 500, 1000, and 1500 mg kg(-1), respectively, of RY; antibiotics diets, NC + 500 mg kg-1 of tiamulin [positive control (PC)]. Overall, average daily gain (ADG) and gain to feed ratio (G:F) increased linearly with increasing level of RY in diets. At the end of the experiment, blood lymphocyte concentration and apparent total tract digestibility of dry matter and gross energy increased linearly in pigs fed the increasing level of RY in diets. The better ADG, G:F, and fecal Lactobacillus counts were observed in both RY and PC groups compared with the NC group. In conclusion, diets with RY improved growth performance, digestibility, blood lymphocyte counts, and fecal Lactobacillus counts in finishing pigs, and RY may be considered as an alternative to antibiotics.
机译：进行该研究，以评估稀土元素富含酵母（RY）对精加工猪中生长性能，营养消化率，血液谱和粪便微生物菌群的影响。共有100个精加工猪[（Landrace X Yorkshire）x Duroc]用于两期饲养试验。根据其初始体重（每次治疗5张钢笔，每支吉尔和两个猎犬），猪随机分配到五种治疗方法。治疗是基础饮食，没有抗生素[阴性对照（NC）]; NC + 500,1000和1500毫克千克（-1）分别为RY;抗生素饮食，NC + 500 mg KG-1硫蛋白[阳性对照（PC）]。总体而言，平均每日增益（ADG）和饲料比率（G：F）随着饮食中增加的ry水平而导致线性增加。在实验结束时，干物质的血液淋巴细胞浓度和明显的干物质总易消化性和总能量在饲料中饲喂饮食水平增加的猪中线性增加。与NC组相比，在RY和PC组中观察到更好的ADG，G：F和粪便乳杆菌计数。总之，RY的饮食改善了生长性能，消化率，血液淋巴细胞计数和粪便乳杆菌在整理猪中的计数，以及RY可以被认为是抗生素的替代品。

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