据了解，这种6-植酸酶由转基因Komagataella phaffii DSM 23036产生。经过评估，专家小组认为在授权的使用条件下，该添加剂对目标物种、消费者和环境仍然是安全的。部分原文报道如下：

　　OptiPhos? is the trade name of the feed additive under assessment co ntaining 6-phytase produced by a genetically modified strain of Komagataella phaffii. It is authorised for use in chickens for fattening and reared for laying, turkeys for fattening and reared for breeding, other avian species for fattening, laying hens, weaned piglets, pigs for fattening and sows. This scientific opinion co ncerns the request for the renewal of the authorisation of the additive for the species/categories for which there is an authorisation and the extension of use to breeding hens, turkeys for breeding purposes, ornamental birds, minor pig species for fattening or breeding and suckling piglets for the period when solid feed is given. The applicant provided evidence that the additive currently in the market complies with the co nditions of the authorisation. There is no new evidence that would lead the EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) to reco nsider previous co nclusions that the additive remains safe for the animal species/categories, the co nsumer and the enviro nment under the authorised co nditions of use. This co nclusion applies also to the new target species/categories for which a request of extension of use is made. The additive is not irritant to skin or eyes but should be co nsidered a respiratory sensitiser. There was no need for assessing the efficacy of the additive for the authorised species/categories. The additive has the potential to be efficacious at 125 OTU/kg complete feed in all poultry species other than turkeys, ornamental birds, pigs for fattening, sows and minor pig species for fattening or breeding; and in turkeys for fattening, reared for breeding and for breeding purposes, weaned piglets and suckling piglets (for the period when solid feed is given) at 250 OTU/kg feed.

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