Published in Scientific Papers. Series D. Animal Science, Vol. LIX
Written by Settasit SANGSOPONJIT , Wichai SUPHALUCKSANA
A 2x2 factorial experiment was carried out to determine the effects of two levels of diet supplemented with and without microorganisms in combination with and without sterilized feed on the nutritive value of broiler diets with four replicates in each treatment. Some microorganisms from the gastrointestinal tract of chicken were supplemented in commercial broiler diets. They were bacterial (BC-NA-01), actinomycetes(BI-NA-03, BC-NA-02 and BL-NA-02), Aspergillus niger sp.(BD-PDA-01), Mucor sp.(BL-PDA-02), Rhizopus stolonifer sp.(BI-PDA-02) and Trichoderma sp.(BL-PDA-02). The results of proximate analysis revealed that a diet supplemented with microorganisms had a lower percentage of dry matter and crude fiber in the starter diet(0-3 wks), grower diet(4-5wks) and finisher diet(last period) than the diet without microorganisms (p<0.05). They were higher in the percentage of phosphorus in the starter diet and calcium in both the grower diet and finisher diet than the diet without microorganisms (p<0.05). The sterilized diet had a higher percentage of moisture than the non-sterilized diet (p<0.01). Also, they were higher in the percentage of crude protein and ether extract in the starter diet and crude fiber, calcium in both the grower diet and finisher diet than the non-sterilized diet (p<0.05). The diet supplemented with microorganisms and sterilized was higher in crude protein, ether extract, crude fiber, ash and metabolizable energy than the others in the starter diet (P<0.01). However, crude protein, and metabolizable energy were not significantly different with the control. Also, the crude protein, ash and metabolizable energy were higher than the others except the control in grower and finisher diet (p<0.01).
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