Formulation and testing of feeds with different energy and protein (amino-acids) content in broilers' feeding
1993
Borcea, F. | Sachelarie, F. | Bem, C. (Institutul de Biologie si Nutritie Animala, Balotesti (Romania))
High-protein mixed feed formulation must contain equally high levels of energy for them to be effectively used by broilers. Male broilers make better use of nutrient - rich feeds than female broilers: experiment A, group I, C: 17.14.26 g, as compared with F-1428.36 g; experiment B, group IV, C-173 3.18 g, as compared with F-1428.36 g; and experiment C, group VII, C-1742.22 g as against F-1409.75 g bodyweight values were recorded on Day 49 of age. Feed conversion is in direct relation to the energy content of diets: experiment A: group I - at 3300 ME/kg MF, the control group had a specific intake of 2.32, as compared with group XII in experiment C, in which the control group ate 2.70 kg of feed for one kilo of meat. In order to obtain broilers with low tissue and abdominal fat deposits, the diets used should contain optimum energy and protein levels, i.e., the energy: protein ratio should be as close as possible (experiment A, group I; experiment B, group IV, where the energy: protein ratio had values ranging between 133 to 137 to 139). Fat deposits depend on sex, as indicated by the fact that females on diets with similar qualitative parameters as those for males had larger fat amounts in their system.
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