O. Guimaraes, B. Cappellozza, Lena C. Capern, J. Schutz, C. Cull, O. Queiroz, G. Copani
{"title":"一种新型直接饲养肉牛微生物对产气荚膜梭菌具有体外和体内支持作用","authors":"O. Guimaraes, B. Cappellozza, Lena C. Capern, J. Schutz, C. Cull, O. Queiroz, G. Copani","doi":"10.3390/ruminants3030018","DOIUrl":null,"url":null,"abstract":"Two experiments were conducted to evaluate the in vitro and in vivo effects of a novel direct-fed microbial (DFM) containing Lactobacillus animalis LA-51, Propionibacterium freudenreichii PF-24, Bacillus licheniformis CH-200, and Bacillus subtilis King (BOVAMINE DEFEND® Plus) against Clostridium perfringens pathogenic strains. In Experiment 1 (in vitro), an agar diffusion assay was performed to qualitatively evaluate the in vitro inhibitory effects of the DFM against C. perfringens types A and C. Including the DFM in the tested yielded inhibition zones with greater than three ring diameters in a 96-well plate. In Experiment 2 (in vivo), twenty 1-day-old beef calves were allocated to control (n = 10) or DFM (n = 10) for 21 days. All calves were orally challenged with 1.0 × 108 colony forming units of C. perfringens type A strain S-107 per head. The procedures such as general health scores, body weight, and fecal sample collections were performed following the C. perfringens challenge. Daily feeding of DFM significantly reduced the incidence of diarrhea while improving general impression and appearance scores of calves. Overall, these results highlight the ability of the DFM containing L. animalis LA-51, P. freudenreichii PF-24, B. licheniformis CH-200, and B. subtilis (BOVAMINE DEFEND® Plus) to inhibit C. perfringens types A and C under different experimental settings.","PeriodicalId":13299,"journal":{"name":"Indian Journal of Small Ruminants","volume":"5 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2023-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"A Novel Direct-Fed Microbial for Beef Cattle Has a Supportive Effect against Clostridium perfringens In Vitro and In Vivo\",\"authors\":\"O. Guimaraes, B. Cappellozza, Lena C. Capern, J. Schutz, C. Cull, O. Queiroz, G. Copani\",\"doi\":\"10.3390/ruminants3030018\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Two experiments were conducted to evaluate the in vitro and in vivo effects of a novel direct-fed microbial (DFM) containing Lactobacillus animalis LA-51, Propionibacterium freudenreichii PF-24, Bacillus licheniformis CH-200, and Bacillus subtilis King (BOVAMINE DEFEND® Plus) against Clostridium perfringens pathogenic strains. In Experiment 1 (in vitro), an agar diffusion assay was performed to qualitatively evaluate the in vitro inhibitory effects of the DFM against C. perfringens types A and C. Including the DFM in the tested yielded inhibition zones with greater than three ring diameters in a 96-well plate. In Experiment 2 (in vivo), twenty 1-day-old beef calves were allocated to control (n = 10) or DFM (n = 10) for 21 days. All calves were orally challenged with 1.0 × 108 colony forming units of C. perfringens type A strain S-107 per head. The procedures such as general health scores, body weight, and fecal sample collections were performed following the C. perfringens challenge. Daily feeding of DFM significantly reduced the incidence of diarrhea while improving general impression and appearance scores of calves. Overall, these results highlight the ability of the DFM containing L. animalis LA-51, P. freudenreichii PF-24, B. licheniformis CH-200, and B. subtilis (BOVAMINE DEFEND® Plus) to inhibit C. perfringens types A and C under different experimental settings.\",\"PeriodicalId\":13299,\"journal\":{\"name\":\"Indian Journal of Small Ruminants\",\"volume\":\"5 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-08-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Indian Journal of Small Ruminants\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.3390/ruminants3030018\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"Veterinary\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Indian Journal of Small Ruminants","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3390/ruminants3030018","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"Veterinary","Score":null,"Total":0}
A Novel Direct-Fed Microbial for Beef Cattle Has a Supportive Effect against Clostridium perfringens In Vitro and In Vivo
Two experiments were conducted to evaluate the in vitro and in vivo effects of a novel direct-fed microbial (DFM) containing Lactobacillus animalis LA-51, Propionibacterium freudenreichii PF-24, Bacillus licheniformis CH-200, and Bacillus subtilis King (BOVAMINE DEFEND® Plus) against Clostridium perfringens pathogenic strains. In Experiment 1 (in vitro), an agar diffusion assay was performed to qualitatively evaluate the in vitro inhibitory effects of the DFM against C. perfringens types A and C. Including the DFM in the tested yielded inhibition zones with greater than three ring diameters in a 96-well plate. In Experiment 2 (in vivo), twenty 1-day-old beef calves were allocated to control (n = 10) or DFM (n = 10) for 21 days. All calves were orally challenged with 1.0 × 108 colony forming units of C. perfringens type A strain S-107 per head. The procedures such as general health scores, body weight, and fecal sample collections were performed following the C. perfringens challenge. Daily feeding of DFM significantly reduced the incidence of diarrhea while improving general impression and appearance scores of calves. Overall, these results highlight the ability of the DFM containing L. animalis LA-51, P. freudenreichii PF-24, B. licheniformis CH-200, and B. subtilis (BOVAMINE DEFEND® Plus) to inhibit C. perfringens types A and C under different experimental settings.