Efficacy of the feed additives consisting of ATCC 53519 and ATCC 55593 as silage additives for all animal species (FEFANA asbl).

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the efficacy of two technological additives (functional group: silage additives) consisting of strains ATCC 53519 and ATCC 55593, respectively. The additives are intended for use with all types of fresh materials and for all animal species at a proposed minimum concentration of 1 × 10 colony-forming units of ATCC 53519/kg fresh material or 5 × 10 CFU of ATCC 55593/kg fresh material. In a previous opinion, the FEEDAP Panel could not conclude on their efficacy since the dry matter content of the ensiled materials at the end of the experiments was not corrected for volatiles, which led to unreliable estimation of the dry matter loss, and the lack of positive effects on any of the other parameters.

Safety and efficacy of a feed additive consisting of NCYC R618 (Benesacc®) for chickens for fattening and other poultry species for fattening and reared for laying (Global Nutritech Biyoteknoloji Ltd. Sti).

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of NCYC R618 as a zootechnical feed additive (functional group: gut flora stabiliser) for chickens for fattening and other poultry species for fattening and reared for laying. The additive has never been authorised. The strain under assessment (NCYC R618) qualifies for the qualified presumption of safety (QPS) and, consequently, the FEEDAP Panel concluded that the product is safe for the target species, the consumers and the environment.

Guidance on the assessment of the efficacy of feed additives.

This guidance document is intended to assist the applicant in preparing and presenting an application, as foreseen in Article 7.6 of Regulation (EC) No 1831/2003, for the authorisation of additives for use in animal nutrition. It specifically covers the assessment of the efficacy of feed additives.

Safety and efficacy of a feed additive consisting of (Willd.) R. Br. extract and leaves (Sangrovit® Extra) for suckling and weaned piglets and other growing Suidae (Phytobiotics Futterzusatzstoffe GmbH).

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of (Willd.) R. Br.

Serrated polyposis syndrome: defining the epidemiology and predicting the risk of dysplasia.

Background: Serrated polyposis syndrome is the most common polyposis syndrome that has neoplastic potential. However, the natural history, genetic basis, and risk of dysplasia and neoplasia of serrated polyposis syndrome are incompletely understood. The objective of this study is to define the epidemiology of serrated polyposis syndrome.