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首页> 外文期刊>Livestock Science >Effect of adding Lactobacillus plantarum or a formic acid containing-product to fermented liquid feed on gastrointestinal ecology and growth performance of piglets.
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Effect of adding Lactobacillus plantarum or a formic acid containing-product to fermented liquid feed on gastrointestinal ecology and growth performance of piglets.

机译：向发酵液中添加植物乳杆菌或含有甲酸的产品对仔猪肠胃生态和生长性能的影响。

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摘要

A study was carried out to investigate whether adding a starter culture or a formic acid containing-product to fermented liquid feed of suboptimal microbial quality could improve the characteristics of the mixture and the gastrointestinal ecology and growth performance of piglets. Four experimental diets were prepared: Feed and water were mixed in the ratio 1:2.5 (w/w) in four closed tanks. (Diet 1) Three times daily, 50% of the mixture stored in the tank was removed and then replaced with an equal amount of fresh feed and water, (FLF), positive control; (Diet 2) Three times daily, 95% of the mixture stored in the tank was removed and then replaced with an equal amount of fresh feed and water. Escherichia coli K12 (1x106/g) was added every morning (COLI); (Diet 3) as the COLI treatment and added Lactobacillus plantarum VTT E-78076 (1x106/g) every morning (+PLANTARUM); and (Diet 4) as the COLI treatment and added 0.26 g AIV/KemiSile 2 plus/100 g mixture three times daily (+ACID). One hundred and sixty weaners were used. On day 14, one littermate from each pen was killed and the gastrointestinal tract removed. The remaining piglets were used to measure the effect of the experimental diets on growth performance during the first six weeks post-weaning. The +ACID diet had lower numbers of lactic acid bacteria and Enterobacteriaceae, higher numbers of yeasts, and lower concentration of lactic acid and acetic acid than the COLI and +PLANTARUM diets. Feeding the +PLANTARUM and the +ACID diets increased daily weight gain during the six weeks post-weaning (P<=0.02) compared to feeding the COLI diet. The +ACID group showed the highest numerical daily feed intake in all periods. The gain/feed during the six weeks post-weaning tended to be lowest in the COLI group (P<0.10). The counts of lactic acid bacteria able to grow at 20 degrees C were lowest in the stomach (P<=0.003) and distal small intestine (P<=0.06) of the +ACID group. The counts of yeasts able to grow at 37 degrees C in the stomach were highest in the +ACID (P<=0.01) and FLF groups (P<=0.09). The number of yeasts able to grow at 20 degrees C in the stomach and distal small intestine was highest in the FLF fed piglets, followed by the +ACID group. This study showed that addition of L. plantarum VTT E-78076 or AIV/KemiSile 2 plus to fermented liquid feed of suboptimal microbial quality improved growth performance without affecting the gastrointestinal ecology of piglets substantially.
机译：进行了一项研究，以研究在微生物质量欠佳的发酵液体饲料中添加发酵剂或含有甲酸的产品是否可以改善混合料的特性以及仔猪的胃肠道生态和生长性能。制备了四种实验性日粮：在四个密闭的水箱中将饲料和水以1：2.5（w / w）的比例混合。 （饮食1）每天三次，将储存在储罐中的混合物的50％取出，然后用等量的新鲜饲料和水（FLF）代替，作为阳性对照。 （饮食2）每天三次，将储存在储罐中的混合物的95％取出，然后用等量的新鲜饲料和水代替。每天早晨添加大肠杆菌K12（1x106 / g）（COLI）; （饮食3）作为COLI治疗，每天早晨添加植物乳杆菌VTT E-78076（1x106 / g）（+ PLANTARUM）; （饮食4）作为COLI处理，每天添加3次（+ ACID）0.26 g AIV / KemiSile 2 plus / 100 g混合物。使用了一百六十只断奶仔猪。在第14天，杀死每只围栏中的同窝仔，并去除胃肠道。其余的仔猪用于测量断奶后前六周实验日粮对生长性能的影响。与COLI和+ PLANTARUM饮食相比，+ ACID饮食的乳酸菌和肠杆菌科细菌数量较少，酵母数量更高，乳酸和乙酸的浓度较低。与饲喂COLI饮食相比，饲喂+ PLANTARUM和+ ACID饮食在断奶后六周期间每天体重增加（P <= 0.02）。 + ACID组在所有期间的每日饲料摄入量最高。断奶后六周的增重/进食在COLI组中往往最低（P <0.10）。 + ACID组的胃（P <= 0.003）和远端小肠（P <= 0.06）中能够在20摄氏度下生长的乳酸菌数量最低。 + ACID组（P <= 0.01）和FLF组（P <= 0.09），能够在37摄氏度下在胃中生长的酵母数量最高。在FLF喂养的仔猪中，能够在胃和远端小肠中于20摄氏度生长的酵母数量最高，其次是+ ACID组。这项研究表明，向微生物质量欠佳的发酵液中添加植物乳杆菌VTT E-78076或AIV / KemiSile 2 plus可以改善生长性能，而不会显着影响仔猪的胃肠道生态。

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