Gerd de Lange

Hatchability is commonly used to evaluate hatchery (and breeder flock) performance. Simply said, percentage hatchability = (number of chicks/number of hatching eggs) * 100. However, different interpretations of both the 'number of chicks' and 'number of hatching eggs', can cause confusion in hatchery performance accounting.Consider the following example:A batch of 100 hatching eggs produces 87 day ...