Mael, Sandy H. and Diarra, Siaka S. and Devi, Ashika (2020) Maintenance of broiler performance on commercial diets diluted with copra meal and supplemented with feed enzymes. Animal Production Science, NA . NA. ISSN 1836-0939
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Context: Dilution of commercial feed with moderate levels of copra meal (CM), a byproduct of coconut oil extraction, was shown to maintain broiler performance in older breeds, but reports on its use in modern fast-growing broilers are limited.
Aims: We evaluated feed dilution with CM and enzyme supplementation in broiler chickens. We hypothesised that (i) diluting commercial feed with CM will maintain performance of modern fast-growing broilers, and (ii) enzyme supplementation will improve utilisation of the diluted diets.
Methods: Experiment 1 studied the performance of growing broilers (10–21 days of age) fed commercial grower diet alone (control), or diluted with one of two levels of CM (50 and 100 g/kg) and with or without enzyme supplementation. Cobb 500 broiler chicks (10 days old), 200 in total, were assigned to five dietary treatments with four replicates, in a completely randomised design. Experiment 2 investigated higher levels of dilution (100 and 200 g CM/kg) and enzyme supplementation of commercial finisher diet in 200 finishing broilers (22–42 days of age) assigned to five treatments with four replicates each.
Key results: In Experiment 1, feed intake was reduced (P < 0.05) on the 100 g CM/kg diet without enzyme compared with 50 g CM/kg without enzyme and both of the enzyme-supplemented diets but was not different (P > 0.05) from the control. Bodyweight gain and feed conversion ratio were not affected (P > 0.05) by dietary treatment. In Experiment 2, feed intake was reduced on 200 g CM/kg with enzyme but did not differ (P > 0.05) among the control and other CM-based diets. Bodyweight gain (P < 0.05) was reduced on the 200 g CM/kg diet without enzyme compared with the 100 g CM/kg diet without enzyme. Feed : gain was not affected (P > 0.05) by diet. The relative weight of carcass and cuts, gut segments and annex organs was not affected (P > 0.05) by diet.
Conclusions: Diluting commercial grower and finisher diets with 50 and 100 g CM/kg has no adverse effects on performance of modern broilers. At higher levels of dilution (100 and 200 g/kg), enzyme supplementation may be required.
Implications: These findings will reduce the cost of broiler production and add value to CM in coconut-producing regions. We recommend more research into higher rates of dilution, sources of CM, and enzyme sources and levels that might improve performance and reduce cost of production.
| Item Type: | Journal Article |
|---|---|
| Subjects: | S Agriculture > SF Animal culture |
| Divisions: | Faculty of Business and Economics (FBE) > School of Agriculture and Food Technology |
| Depositing User: | Siaka Diarra |
| Date Deposited: | 30 Jun 2020 00:49 |
| Last Modified: | 30 Jun 2020 00:49 |
| URI: | https://repository.usp.ac.fj/id/eprint/12211 |
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