1. Certified organic pullet producers were surveyed to gain a better understanding of the production environment, to identify the key constraints to organic pullet rearing and to identify factors that affected bird health. 2. Pullet rearers had been involved in organic production for between 1...

The aim of this cross-sectional study was to identify and quantify management associations with feather pecking and vent pecking in adult laying hens in alternative systems on commercial farms in Great Britain. The data were derived from a postal questionnaire carried out in 1998. Of 200...

A stochastic dynamic programming model is presented for decision-making by the manager of a small rhino reserve facing a poaching threat, with the objective of maximizing the rhino population size in the long term. The manager decides annually what proportion of the budget to spend on dehorning...