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首页> 外文期刊>British Poultry Science >Efficacy of combined or single use of Lactobacillus crispatus LT116 and L. johnsonii LT171 on broiler performance
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Efficacy of combined or single use of Lactobacillus crispatus LT116 and L. johnsonii LT171 on broiler performance

机译：松脆乳杆菌LT116和约翰逊乳杆菌LT171联合使用或单用对肉鸡生产性能的影响

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1. The objective of this research was to investigate the efficacy of combined or single use of Lactobacillus crispatus LT116 and Lactobacillus johnsonii LT171 on broiler performance. 2. A total of 320 one-d-old male Ross broiler chicks were allocated in 4 experimental treatments for 6 weeks. The experimental treatments received a maize-soybean meal basal diet that was supplemented as follows: 'control', with no other additions; 'LJ', 1 x 106 CFU of L. johnsonii LT171; 'LC', 1 x 106 CFU of L. crispatus LT116; and 'LCJ', 0 center dot 5 x 106 CFU of L. johnsonii LT171 + 0 center dot 5 x 106 CFU of L. crispatus LT116/g of the diet. A suspension of sheep red blood cells (SRBC) was injected into the breast of 8 birds from each treatment on d 14 and 30, and the antibody titre was measured on d 20, 26, 36 and 42. 3. Body weight was improved when compared with control for broilers fed diets supplemented with LCJ. The feed conversion ratio (FCR) decreased in LC and LCJ groups compared with control. The number of coliforms in the ileum of LJ, LC and LCJ birds was lower than that from the control birds. However, only the LCJ treatment significantly decreased the number of coliforms in the caecum. The LCJ group had greater villus height in the duodenum than the LC group, and both LCJ and LC groups showed increased villus height in the duodenum and jejunum relative to the control. Antibody titre against SRBC was higher for the LCJ group than for the LJ and control groups in terms of secondary immune response (mean of 36 and 42 d). 4. This study showed, compared with the control, that the combination of Lactobacillus spp. could positively affect body weight, coliform numbers in the caecum and immune response.
机译：这项研究的目的是研究组合或单次使用crispatus crispatus LT116和johnsonii LT171乳酸菌对肉鸡生产性能的影响。 2.总共320只一维大雄性Ross肉鸡雏鸡被分配到4个实验处理中，共6周。实验处理接受了玉米-大豆粉基础饮食，其补充如下：“对照”，没有其他添加; 'LJ'，约翰逊L.LT171的1 x 106 CFU; L.crispatus LT116的'LC'，1 x 106 CFU;和“ LCJ”，约翰逊乳杆菌LT171的0个中心点5 x 106 CFU +薄脆乳杆菌LT116 / 0的0个中心点5 x 106 CFU。分别在第14和30天将羊红细胞悬浮液（SRBC）注入到每只处理的8只鸟的乳房中，并在20、26、36和42天测量抗体滴度。3.体重增加时与对照相比，饲喂补充LCJ的肉鸡。与对照组相比，LC和LCJ组的饲料转化率（FCR）降低。 LJ，LC和LCJ禽类回肠中的大肠菌群数量低于对照禽类。但是，只有LCJ处理可以显着减少盲肠中大肠菌的数量。 LCJ组的十二指肠绒毛高度高于LC组，并且LCJ和LC组的十二指肠和空肠绒毛高度均相对于对照组高。就次级免疫反应而言，LCJ组抗SRBC的抗体滴度高于LJ组和对照组（平均36天和42天）。 4.该研究表明，与对照相比，乳酸杆菌属的组合。可以积极影响体重，盲肠中的大肠菌群数量和免疫反应。

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