Abstract
This study aimed to evaluate the effect of the inclusion of coconut fruit pulp by-product (CPB) on the intake, apparent digestibility, nitrogen balance, and ruminal parameters of sheep. Five intact, male, non-descript lambs with a mean initial body weight of 25.5 ± 1.68 kg were assigned to a Latin square design (5 × 5) of five treatments consisting of CPB inclusion levels, in five proportions of 0%, 5%, 10%, 15%, and 20% dry matter (DM), in diets consisting of sugarcane bagasse as forage, with corn and soybean meal. Each period lasted 15 days for adaptation followed by 6 days for data collection. The inclusion of CPB linearly decreased (P < 0.05) the intake of DM, crude protein, non-fibre carbohydrates, neutral detergent fibre (NDF), and DM digestibility. The inclusion of CPB linearly increased (P < 0.05) the ether extract digestibility, but did not influence (P > 0.05) the NDF digestibility. There was a linear reduction (P < 0.05) in the absorbed nitrogen (N) and retained N (g/day); however, a quadratic increase (P < 0.05) for N absorbed (% consumed) as well as ammonia nitrogen was observed. There was a quadratic increase (P < 0.05) for propionate (mMol/L and %) and the ratio of acetate, propionate and butyrate (mMol/L and %) with the inclusion of CPB in the diet. Based on these findings, it was recommended to incorporate CPB up to the level of 5% in the diet of sheep.
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Acknowledgements
Thanks are due to the Federal University of Alagoas (UFAL) for the assistance in the execution of the experiment and the University of Lisboa (ULisboa) for the assistance with laboratory analyses.
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This project was funded by the Foundation for Research Support of the State of Alagoas (FAPEAL).
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All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by F J S Silva, D M Lima Júnior, and V V S Almeida. The first draft of the manuscript was written by A C Oliveira, B D O Fernades, A P Souza, F F R Carvalho, and A N Medeiros; all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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da Silva, F.J.S., de Lima Júnior, D.M., de Almeida, V.V.S. et al. Coconut fruit pulp by-product in the diet of sheep. Trop Anim Health Prod 54, 379 (2022). https://doi.org/10.1007/s11250-022-03368-4
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DOI: https://doi.org/10.1007/s11250-022-03368-4