Utilisation of giant taro (Alocasia macrorrhiza) root meal with or without coconut oil slurry by layers and broilers

Diarra, Siaka S. (2016) Utilisation of giant taro (Alocasia macrorrhiza) root meal with or without coconut oil slurry by layers and broilers. Animal Production Science, NA . NA. ISSN 1836-0939

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Abstract

Replacements of maize with Alocasia macrorrhiza root meal (AMRM) with or without added coconut
oil slurry (COS) in poultry diets were investigated in a series of two experiments. In Experiment 1, the replacement
of maize with two levels (10% and 20%) each of AMRM and AMRM–COS on egg production and egg quality was
investigated. Experiment 2 investigated the same treatments as in Experiment 1 on broiler performance. In both
experiments, each diet was fed to four replicates of 10 birds in a completely randomised design. There was no marked
effect on feed intake (FI) in both experiments (P > 0.05). In Experiment 1, percentage hen-day production and feed
conversion ratio were depressed (P < 0.05) on 20% AMRM and egg weight on 10% AMRM, but these depressing
effects were overcome by COS addition. Egg mass was significantly (P < 0.05) increased on 20% AMRM–COS
compared with the other AMRM groups, but did not differ (P > 0.05) between the control and AMRM–COS. Haugh
unit and percentage shell were not affected by the treatment (P > 0.05). In Experiment 2, bodyweight gain was
significantly (P < 0.05) reduced with the inclusion of AMRM in the diet, with the lowest gain on 20%
AMRM–COS. Feed conversion ratio was adversely affected when AMRM was included at a concentration greater
than 10% of dietary maize (P < 0.05). Coconut oil-slurry treatment of the meal did not improve performance. It was
concluded that inclusion of AMRM at a concentration greater than 10% dietary maize adversely affects the performance
of both layers and broilers. Treatment of AMRM with COS at 9 : 1 overcomes these adverse effects in laying hens, but
not in broilers. More research is warranted on the effects of higher concentrations of COS-treated AMRM in the diet
on layers, and on processing methods that will improve performance of poultry.

Item Type:	Journal Article
Subjects:	S Agriculture > S Agriculture (General)
Divisions:	Faculty of Business and Economics (FBE) > School of Agriculture and Food Technology
Depositing User:	Fulori Nainoca - Waqairagata
Date Deposited:	18 Oct 2016 21:45
Last Modified:	18 Oct 2016 21:45
URI:	https://repository.usp.ac.fj/id/eprint/9412

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