ISSN: 0041-3216 (Online), 0041-3216 (Print)
Volume 95 Number 1
Effect of processing and level of inclusion of processedfermented Jatropha curcas (L) kernel meals on the performance of starter broiler chicks
The interaction effect between treatment and level of inclusion of processed-fermented Jatropha curcas (L) kernel meals (JKM) on the performance of broiler chicks was investigated. Three hundred 1-day old broiler chicks were reared using a 3 x 4 factorial model in a completely randomized design with 10 treatment groups having 3 replicates of 10 birds in each group in a 21-day feeding trial. Jatropha curcas kernels were subjected to three different processing methods, namely: Raw Defatted Fermented Meal (RDFM), Cooked Defatted Fermented Meal (CDFM) and Lye treated Defatted Fermented Meal (LDFM). Each meal was included at varying inclusion levels of 2.5%, 5.0% and 7.5%. Diet 1 contained 0% JKM and served as the control diet, while diets 2, 3, 4, contained 2.5%, 5.0% and 7.5% RDFM, diets 5, 6, and 7 contained 2.5%, 5.0% and 7.5% CDFM and diets 8, 9, 10 contained 2.5%, 5.0% and 7.5% LDFM. The results indicated an improvement in the growth performance of broiler chicks fed CDFM and LDFM up to 2.5 and 5% inclusion level respectively over those fed RDFM, although, with a depressed feed intake and daily gain compared with those on the control diet. Haematological parameters significantly (p<0.05) influenced were eosinophyll, basophyll and mean corpuscular haemoglobin concentration especially for birds fed RDFM and LDFM, at varying inclusion levels. Birds fed CDFM had significantly different (p<0.05) globulin, creatinine, Aspartate aminotransferase and Acid phosphatase at varying inclusion levels. The liver reduced in size with increasing inclusion level, although only those fed CDFM were affected (p<0.05), meanwhile at 7.5% inclusion level, there were significant differences within treatments, for lungs at 2.5% and at 7.5% for gizzard, pancrease and proventriculus. The result suggested that broiler chicks could tolerate CDFM and LDFM (up to 2.5% and 5.0% inclusion respectively). Therefore, additional research will be required to investigate the response of broilers to JKM at the finisher phase.
Keywords: Jatropha curcas kernel meal, Aspergillus niger, blood, broilers, growth, organ weight