Sökning: "Andreas Calais"

Hittade 2 uppsatser innehållade orden Andreas Calais.

1. 1. Poor welfare or future investment? Different growth pattern of broiler breeders

   Master-uppsats, Linköpings universitet/Biologi; Linköpings universitet/Tekniska fakulteten

   Författare :Andreas Calais; [2015]
   Nyckelord :Chicken; broiler breeder; welfare; stress; hunger; feed restriction; skip-a-day; morphometrics.;

   Sammanfattning : The parental stock of meat type chickens (broiler breeders) are commonly feed restricted to decrease their rapid growth and the issues associated with it. Among these birds, chronic hunger and stress are the most prominent welfare concerns and mass heterogeneity within flocks a major management challenge. LÄS MER

3. 2. Is personality dependent of growth rate in red junglefowl (Gallus gallus)?

   Kandidat-uppsats, Institutionen för fysik, kemi och biologi; Tekniska högskolan

   Författare :Andreas Calais; [2013]
   Nyckelord :Behaviour; Chicken; Growth rate; Life-history traits; Personality; Red junglefowl;

   Sammanfattning : Personality has been reported in a large variety of animal species, but it is not obvious why animals have personality. Variation in physiological traits, such as growth rate, should theoretically affect variation in behaviours and thus can explain why we observe variation in personalities. LÄS MER