[1]
“Choline supplementation for Hisex White and Hisex Brown laying hens. 1. Performance and egg quality”, Rev. Fac. Med. Vet. Zootec., vol. 25, no. 2, pp. 297–307, Sep. 1988, doi: 10.11606/issn.2318-3659.v25i2p297-307.