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首页> 外文期刊>Journal of Animal Science >Effects of a multi-strain Bacillus species-based direct-fed microbial on growth performance, nutrient digestibility, blood profile, and gut health in nursery pigs fed corn-soybean meal-based diets
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Effects of a multi-strain Bacillus species-based direct-fed microbial on growth performance, nutrient digestibility, blood profile, and gut health in nursery pigs fed corn-soybean meal-based diets

机译：基于多菌株的直接喂养微生物对苗圃猪生长性能，营养消化，血液谱和肠道健康的影响喂养玉米豆膳食饮食

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This experiment was conducted to investigate the effect of a Bacillus spp.-based directfed microbial (DFM) on growth performance, apparent total tract digestibility (ATTD), blood profile, intestinal histomorphology, and fecal gas emission in piglets fed corn and soybean meal-based diets. The DFM product was based on 1 strain of Bacillus subtilis and 2 strains of Bacillus amyloliquefaciens and formulated to supply 1.5 x 10(5) cfu/g of feed. A total of 128 piglets ([Yorkshire x Landrace] x Duroc; 6.8 +/- 0.6 kg BW; weaning age: 24 d) were housed in groups (4 pigs/pen, 2 barrows and 2 gilts) and fed diets (n = 16) without or with DFM in a 2-phase feeding program: d 0 to 14 (phase I) and 15 to 42 (phase II). Feed intake and BW were measured weekly. At the end of each phase, samples for blood urea nitrogen (BUN), blood creatinine, ATTD, and fecal noxious gas emission were taken. At termination, 12 piglets per treatment were killed to access intestinal tissues for histomorphology. Overall, pigs fed DFM had a greater (P 0.05) G:F than pigs fed the control diet. In phase I, pigs fed DFM showed a greater (P 0.05) ADG and lower (P 0.05) concentration of BUN and fecal ammonia emission than the control group. In phase II, a greater (P 0.05) ATTD of nitrogen and longer (P 0.05) duodenum and jejunum villi were observed in pigs fed the DFM diet compared with the control group. In conclusion, inclusion of DFM improved growth performance and villi length of the duodenum and jejunum in nursery pigs. Furthermore, DFM enhanced protein utilization as demonstrated by increased nitrogen digestibility, lower BUN, and lower fecal ammonia release.
机译：进行了该实验，以研究基于Bacillus SPP的直射微生物（DFM）对生长性能的影响，表观总介质消化率（ATTD），血液曲线，肠道组织，饲喂玉米和大豆粉的粪便气体排放 - 基于饮食。 DFM产物基于1株枯草芽孢杆菌和2个芽孢杆菌淀粉菌菌株的菌株，并配制以供给1.5×10（5）CFU / g饲料。共有128只仔猪（[约克夏X Landrace] x Duroc; 6.8 +/- 0.6 kg Bw;断奶年龄：24 d）分组（4只猪/笔，2个猎犬和2个粗糙）和美联储饮食（n = 16）在2相馈送程序中没有或DFM中的DFM：D 0至14（相I）和15至42（II期）。饲料摄入量和BW每周衡量。在每相结束时，采集血尿尿素氮（BUN），血肌酐，attd和粪便有害气体排放的样品。在终止时，杀死每次治疗的12个仔猪以获得用于组织形态学的肠组织。总体而言，饲喂DFM的猪具有更大（P <0.05）G：F饲喂控制饮食的猪。在I阶段I中，饲料DFM的猪显示出更大的（P <0.05）ADG和低（P <0.05）浓度的BUN和粪便氨发射而不是对照组。在喂养DFM饮食的猪中，在与对照组相比，在喂养DFM饮食的猪中观察到较大（P <0.05）的氮气和较长的氮气和较长的氮气和Jejunum villi的较大（P <0.05）。总之，纳入DFM在苗圃中提高十二指肠和Jejunum的增长性能和绒毛长度。此外，DFM增强蛋白质利用，如提高的氮气消化率，下面包和较低的粪便氨释放所证明。

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