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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

The effect of dietary alterations on growth, productivity, behaviour and preference of broiler breeder females.

Morrissey, Krysta 10 September 2012 (has links)
This thesis is an investigation of dietary alterations, including the addition of fibre and an appetite suppressant (alternative diet) and the use of a skip-a-day (SAD) feeding regime, which may reduce hunger. Broiler breeders are severely feed restricted to limit growth, leading to symptoms of chronic hunger. We used behavioural indices, feather condition scoring and preference tests were used to compare satiating properties of the diets. Alternative diets reduced symptoms of hunger such as feather, object and aggressive pecking and resulted in better feather condition. Although SAD birds feather pecked more during feeding bouts, SAD birds still had better feather condition than daily birds. Preference testing revealed no differences in dietary preference, implying a lack of preference, or a methodological flaw. However, no aversion to the alternative diet was evident. Alternative diets, regardless of feeding frequency, may be the best option for bettering the welfare of growing broiler breeders. / Agriculture and Agri-Food Canada, OMAFRA, Canadian Poultry Research Council

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