title: The efficacy of bamboo charcoal in comparison with smectite to reduce the detrimental effect of aflatoxin B1 on in vitro rumen fermentation of a hay-rich feed mixture.
abstract: Two commercial materials, a bamboo charcoal (BC) and a smectite clay (SC), were assessed in vitro with aflatoxin B1 (AFB1) in an equilibrium adsorption test. The adsorption capacity and proportion adsorbed (0.381 μg/mg, 0.955) for BC were greater than for SC (0.372 μg/mg, 0.931). The effects of in vitro ruminal fermentation of hay-rich feed incubated with 1.0 μg/mL AFB1 for 0-10 g/L doses of BC and SC were measured at 39 °C for 72 h. The BC and SC binders increased AFB1 loss at dosages ≥1.0 g/L (p < 0.0001). Average AFB1 loss (p < 0.0001) was greater for SC (0.904) than BC (0.881). Both SC and SC addition increased in vitro dry matter loss, and the average dry matter losses were similar. Asymptotic gas volume and volatile fatty acid production were greater for BC than for SC (p < 0.0001). Thus, BC may be as effective as SC in removing aflatoxin B1's detrimental effects on rumen degradability and fermentation under the occurrence of microbial aflatoxin degradation.
authors.affiliation: State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China. jiangyahui.ff@163.com.
authors.forename: Ya-Hui
authors.initials: YH
authors.lastname: Jiang
authors.affiliation: Agro-product Safety Research Centre, Chinese Academy of Inspection and Quarantine, Beijing 100123, China. wangp_129@163.com.
authors.forename: Ping
authors.initials: P
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China. yang_hongjian@cau.edu.cn.
authors.forename: Hong-Jian
authors.initials: HJ
authors.lastname: Yang
authors.affiliation: Agro-product Safety Research Centre, Chinese Academy of Inspection and Quarantine, Beijing 100123, China. chenyingcaiq@163.com.
authors.forename: Ying
authors.initials: Y
authors.lastname: Chen
mesh_terms: D000327:Adsorption; D016604:Aflatoxin B1 / Q000737:chemistry*; D000821:Animal Feed; D000818:Animals; D031723:Bambusa; D002417:Cattle; D002606:Charcoal / Q000737:chemistry*; D005232:Fatty Acids, Volatile / Q000378:metabolism; D005260:Female; D005285:Fermentation; D005740:Gases / Q000378:metabolism; D006109:Poaceae; D012417:Rumen / Q000378:metabolism*; D017640:Silicates / Q000737:chemistry*
chemical_list: D005232:Fatty Acids, Volatile; D005740:Gases; D017640:Silicates; D002606:Charcoal; D016604:Aflatoxin B1; C033214:Smectite