Study of some behavioural patterns in common breeds of ducks in Egypt with the aim of adopting proper management

accouvage agriculture intensive behaviour breeds (animals) brooding canard cleaning cobijamiento comportamiento comportement comportement alimentaire ducks eclosabilidad del huevo egg hatchability egipto egypt feeding habits fotoperiodismo intensive farming limpieza nettoyage pato photoperiodicity race (animal) razas (animales) temperatura temperature