Background and Objective: Because of a severe yellow corn shortage in Côte dʼIvoire in 2021, the study assessed Bixa orellana (B.o) grains and Curcuma longa (C.l) rhizomes powder effect on Coturnix coturnix japonica hens egg yolks colouration.Materials and Methods: First, two control diets were made of yellow corn (YC) and white corn (WC).Additionally, 10 diets were made by enriching the white corn-based diet with B.o grains and C.l rhizomes powders, at different incorporation rates.Second, three hundred sixty Coturnix coturnix japonica laying hens, 51 weeks old weighing 227.68±16.68g, were randomly allotted to the 12 diets, with 10 birds in each, with 3 replications.Following, on the last day of week 8 (59 weeks old), the eggs were weighed.Then, three eggs of similar weights per diet were collected for analysis.To end, the eggs and their constituents were weighed and the yolksʼ colours were assessed through L*, a* and b* measurements.Results: First, the best egg weights were obtained with WC+1% B.o, WC+0.15%B.o+0.45% C.l and WC+0.6%B.o diets for 11.31±0.21,11.10±0.12and 11.06±0.12g, respectively.Second, following the YC diet that performed 98.34±061 (p<0.0001),white corn-based diets containing natural carotenoid sources best egg yolk yellowness (b*) were obtained with WC+0.75% B.o+0.25% C.l and WC+1% B.o for 90.11±1.21and 80.55±1.21(p<0.0001).Thirdly, the total cholesterol lowest content with well-coloured egg yolk was obtained with WC+1% B.o for 18.60±3.47mg per g of fresh yolk.The WC+1% B.o result was far away from that of the YC diet (32.58±1.74mg/g, p<0.0001).Conclusion: White corn-based diets can be beneficially enriched with 1% of Bixa orellana grainsʼ powders for Coturnix coturnix japonica hens egg yolks colouration.
Background and Objective: Searching for an alternative feed source was the objective of this study.Protein-source feedstuffs are mainly becoming costly and unavailable, therefore raw, full-fat soybean was considered an alternative source.Pelleting was considered to reduce antinutritional factors in raw soybean.Materials and Methods: A total of 408 unsexed broiler chicks were allocated to replicates.In a starter phase, commercial SBM was replaced by raw full-fat soybean (RFSB) at 0, 10 or 20%, which had three treatments and each was replicated eight times.Six treatments were prepared by dividing each of the aforementioned starter diets into two and then by pelleting anyone from each respective group and leaving the other as mash.Every treatment had four replicates and 17 birds in each.Results: Results indicated that FI, BWG and FCR of broilers were not significantly (p>0.05)affected by the supplementation of a levelled RFSB on diets at starter, grower and finisher phases.However, the interaction effect between the feed-form and levels of RFSB influenced (p<0.05) the FI, BW and BWG, at the grower stage.The FI, at the finisher stage, was also significantly (p<0.05)influenced by the feed-forms.Moreover, weights of dressed, eviscerated, cut parts of the carcass and visceral organs were not significantly (p>0.05)affected by both RFSB supplementations, up to 20% and the feed forms.Conclusion: It is concluded that commercial SBM can be replaced by locally produced RFSB at up to 20% without pelleting the diets.
