Manteiga Albertina Felizardo, Changule Abilio Paulo, Magaia Dercia Hilario, Manjate Nilza Jorge, Chilala Florentina Domingos, Joaquim Leonel António, Chivale Eunice Justino, Anjos Filomena Dos, Tomo Otilia Henrique Tamele, Garcia-Herreros Manuel, Bila Custodio
Department of Animal and Public Health, Faculty of Veterinary Medicine, Eduardo Mondlane University (UEM), Maputo, Mozambique.
Center for Genetic Resources and Animal Assisted Techniques (CRGTRA), Directorate of Animal Science (DCA), Agricultural Research Institute of Mozambique (IIAM), Matola, Mozambique.
Front Vet Sci. 2025 Aug 18;12:1557640. doi: 10.3389/fvets.2025.1557640. eCollection 2025.
Wheat bran (WB) and biscuit crumbs (BC) offer alternative feed sources for laying hens, potentially improving productivity and economic efficiency.
This work evaluated the partial replacement of maize meal with WB or BC, with or without the addition of CECT 5940, on the productive and economic performance of laying hens.
Five treatments were allocated as follows: T1: a basal diet; T2: a basal diet where 20% of maize meal was replaced by WB; T3: a basal diet that included 20% of WB plus CECT 5940; T4: a basal diet where 20% of maize meal was replaced by BC; and T5: a basal diet that included 20% of BC plus CECT 5940. Productive parameters (live weight, laying rate, feed conversion per egg mass, feed conversion per dozen eggs, feed consumption, and viability) and economic metrics (feed costs, production cost per egg, production cost per dozen eggs, gross revenue, gross added value, profitability index, contribution margins, and break-even point) were assessed using ANOVA and the Tukey test.
A statistically significant ( < 0.05) increase was observed in the LR and FC/dz when maize meal was partially replaced with BC. While the addition of CECT 5940 to WB significantly improved LR and FC/dz when compared to T2 ( < 0.05), no significant difference was seen for BC ( > 0.05). As for the economic evaluation, both T2 and T3 significantly reduced production costs ( < 0.05). Compared to T1, the partial replacement of maize meal with WB significantly reduced ( < 0.05) gross revenue. The addition of CECT 5940 significantly increased ( < 0.05) gross value added, profitability index, and contribution margins, and significantly reduced the break-even point ( < 0.05) in comparison with T1 for WB and BC both with (T3 and T5) and without CECT 5940 (T2 and T4).
It was concluded that the addition of CECT 5940 to both WB and BC diets was as efficient as the basal diet in terms of productivity and improved economic performance.
麦麸（WB）和饼干碎末（BC）为蛋鸡提供了替代饲料来源，有可能提高生产性能和经济效益。
本研究评估了用WB或BC部分替代玉米粉，添加或不添加CECT 5940，对蛋鸡生产性能和经济效益的影响。
将五种处理分配如下：T1：基础日粮；T2：用WB替代20%玉米粉的基础日粮；T3：包含20%WB加CECT 5940的基础日粮；T4：用BC替代20%玉米粉的基础日粮；T5：包含20%BC加CECT 5940的基础日粮。使用方差分析和Tukey检验评估生产参数（活重、产蛋率、每蛋重的饲料转化率、每打鸡蛋的饲料转化率、采食量和存活率）和经济指标（饲料成本、每枚鸡蛋的生产成本、每打鸡蛋的生产成本、总收入、总附加值、盈利能力指数、边际贡献率和盈亏平衡点）。
当用BC部分替代玉米粉时，产蛋率（LR）和每打鸡蛋的饲料转化率（FC/dz）有统计学显著（<0.05）提高。与T2相比，向WB中添加CECT 5940显著提高了LR和FC/dz（<0.05），而BC组无显著差异（>0.05）。在经济评估方面，T2和T3均显著降低了生产成本（<0.05）。与T1相比，用WB部分替代玉米粉显著降低了（<0.05）总收入。添加CECT 5940显著提高了（<0.05）总附加值、盈利能力指数和边际贡献率，与T1相比，显著降低了（<0.05）WB和BC添加（T3和T5）及未添加（T2和T4）CECT 5940时的盈亏平衡点。
得出的结论是，在WB和BC日粮中添加CECT 5940在生产性能和改善经济性能方面与基础日粮一样有效。
