Search for dissertations about: "Feed quality"
Showing result 21 - 25 of 138 swedish dissertations containing the words Feed quality.
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21. Evaluation of locally available feed resources for striped catfish (Pangasianodon hypophthalmus)
Abstract : This thesis investigated and compared inputs and outputs, economic factors and current feed use in small-scale farming systems producing striped catfish (Pangasianodon hypophthalmus) in the Mekong Delta. The nutrient content of locally available natural feed resources for striped catfish was determined and growth performance, feed utilisation and body indices were analysed in pond-cultured striped catfish fed diets where fish meal protein was replaced with protein from local feed resources. READ MORE
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22. Erythrina foliage as an alternative feed for growing goats in Lao PDR
Abstract : Foliages from some tropical plants and from different species of the legume Erythrina were examined in five studies assessing the characteristics of these foliages as feed for goats. Digestibility and feed preference studies showed that ad libitum feeding of foliage from Erythrina (Erythrina variegata), jackfruit (Artocarpus heterophyllus) and kapok (Ceiba pentandra) resulted in a longer time spent eating and more changes in diet selection, feed intake, crude protein (CP) digestibility and nitrogen (N) retention than foliage from jujube (Ziziphus jujube Mill), fig (Ficus racemosa) and mango (Mangifera indica). READ MORE
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23. Metabolomics as a tool to evaluate salmonid response to alternative feed ingredients
Abstract : Aquaculture has largely expanded in the last decades to satisfy the growing market demands for fish products. Fishmeal and fish oil, which are traditionally used in salmonid feeds, are becoming unsustainable. Development of aquafeeds based on alternative ingredients are needed to overcome the ecological challenges. READ MORE
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24. Evaluation of locally available feed resources for Nile tilapia (Oreochromis niloticus) in Rwanda
Abstract : Aquaculture was introduced in Rwanda in the 1940s as an extensive pond-based system but the sector has gained in popularity during the past two decades, resulting in greater numbers of fish ponds and a corresponding increase in demand for quality fish feeds for sustainable aquaculture production. The aim of this thesis was to identify, sample and evaluate the nutritive value of some locally available feed ingredients that could be used by fish farmers producing Nile tilapia. READ MORE
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25. Effects of non-fish based raw materials on the fish muscle quality of salmonids
Abstract : Salmonids are considered as fatty fish and a healthy food. They are characterized by a high proportion of n-3 long chain polyunsaturated fatty acids (n-3 LCPUFA). There is great interest in producing high-quality salmonids with a reduced use of fish-based materials and a challenge to adjust feeds towards more sustainable. READ MORE
