Abstract:
Two feeding trials were conducted to evaluate the nutritive value of local variety (kanbiri) and mixed samples of mango seed kernel meal (MSKM) processed by soaking and boiling on the proximate composition level of ant nutritional factors, performance and hematology of broiler chickens. The results indicated that kanbiri processed by boiling reduced the anti nutritional factors levels such as phytate, tannine, cyanide and oxalate by 84.44%, 9.43%, 77.98% and 24.0%. In the mixed samples boiling reduced phytate by 74.19%, and Tanin 47.06% compared to control. In the first experiment which lasted for eight weeks two hundred and twenty five (225) day old broiler chicks with average initial weight of 40.00g were randomly allotted to five dietary treatments with three replicates of 15 birds each in completely randomized design. The experimental diets consisted of soaked and boiled local variety (Kanbiri) and mixed sample mango seed kernel MSK inclusion in broiler starter diets at 25% dietary level to replace maize in a control diets to make 5 treatments designed as T1, T2, T3, T4 and T5 for mixed samples at the starter and finisher phases. The result of the first trial shows that final weight at the starter and finisher phases were significantly (P<0.05) higher in the control group (486.67g and 1500g respectively) compared to all other treatments. The average water intake was significantly (P<0.05) higher in birds fed soaked mixed samples of MSK based diets (T4) than the other treatments. There were no significant differences in the feed intake, weight gain, feed to gain ratio, feed cost per kg gain. In the finisher phase, the final weight was significantly (P<0.05) higher in the control group T1 compared to bird fed soaked mixed samples of MSK based diet (T4) but was similar to all other treatments. The feed to gain ratio, water intake, feed cost per kg gain were significantly better in the control group compared to T3, T4 and T5 but were similar to the values in T2. The carcass analysis shows that there were significant differences in dressed weight, liver, shank and spleen across the treatments. There were no significant differences in all other parameters measured. Hematological evaluation shows that the total protein was significantly (P<0.05) higher in the control group (T1) and (T2) compared to other treatment. There were no significant differences in other hematological parameters and differential blood count across the treatment. In the second trial 270 day old chicks were randomly allocated to six dietary treatments with three replicate of 15 birds each in a completely randomized design. The diets consisted of varying levels of (0, 20, 40, 60, 80 and 100%) of soaked local (kanbiri) variety of mango seed kernel representing treatment 1,2,3,4,5 and 6 respectively. The result of the starter phase of the second trial shows that the final weight was significantly (P<0.05) higher in T1 and T2 compared to other treatments. The weight gain was significantly (P<0.05) higher in T1 compared to other treatment. The feed to gain ratio in the feed cost per kg gain were significantly (P<0.05) poorer in (T6) compared to other treatments and the finisher phase, the final weight and weight gain were significantly (P<0.05) higher in T1 compared to T3, T4, T5 and T6, but similar to T2. The feed intake was significantly (P<0.05) higher in T2 compared to T5 but similar to other treatments. The feed to gain ratio was significantly (P<0.05) better in treatment one compared to other treatments. The feed cost per kg gain was significantly (P<0.05) lower in T1 and T2 compared to other treatment. Hematological parameters shows that total protein was significantly (P<0.05) higher in T1 compared to T3, T4 and T5 but similar to T2 and T6. There were no significant differences in other hematological parameters measured across the treatment. The result indicated that local (kanbiri) variety of MSK processed soaked enhanced the performance of broiler chickens when included at 60% level also (kanbiri) processed by soaking had no adverse effect on the health status of the birds. The second experiment indicated that (kanbiri) processed by soaking and included at 20% level gave performance characteristics similar to that of control indicating that local (kanbiri) variety can be included as a substitute for maize at 20% level without deleterious effect on the health status of the bird.
NUTRITIVE VALUE OF DIFFERENTLY PROCESSED MANGO SEED KERNEL (Local Variety (Kanbiri) and mixed Samples) MEAL IN BROILER DIETS
