Reticular Outflow, Rumen Dynamics, and Ingestive Behavior in Buffaloes (Bubalus bubalis) Fed Diets with Different Sources of Energy

Franklin Delano  dos Santos Soares; Gleidson Giordano  Pinto de Carvalho; Aureliano José  Vieira Pires; Douglas dos  Santos Pina; José Augusto  Gomes de Azevêdo; Laudi Cunha  Leite; Maikal Souza  Borja; Tamires da  Silva Magalhães; Maria Leonor Garcia  Melo Lopes de Araújo; Lara Maria  Santos Brant; José Esler  de Freitas Júnior

doi:10.6000/1927-520X.2025.14.04

Authors

Franklin Delano dos Santos Soares State University of Southeast Bahia, Department of Animal Science, Estrada Itapetinga/Itambé – S/N, Itapetinga, Bahia, 45.700-000, Brazil
Gleidson Giordano Pinto de Carvalho Federal University of Bahia, Department of Animal Science, Av. Adhemar de Barros, 500, Ondina, 40.170-110, Salvador, Bahia, Brazil
Aureliano José Vieira Pires State University of Southeast Bahia, Department of Animal Science, Estrada Itapetinga/Itambé – S/N, Itapetinga, Bahia, 45.700-000, Brazil
Douglas dos Santos Pina Federal University of Bahia, Department of Animal Science, Av. Adhemar de Barros, 500, Ondina, 40.170-110, Salvador, Bahia, Brazil
José Augusto Gomes de Azevêdo State University of Santa Cruz, Ilhéus, Bahia, 45.662-900, Brazil
Laudi Cunha Leite Federal University of the Recôncavo of Bahia, Center of Agrarian, Environmental and Biological Sciences, Av. Rui Barbosa, 710, Cruz das Almas, 44.380-000, Bahia, Brazil
Maikal Souza Borja Federal University of Bahia, Department of Animal Science, Av. Adhemar de Barros, 500, Ondina, 40.170-110, Salvador, Bahia, Brazil https://orcid.org/0000-0001-7595-208X
Tamires da Silva Magalhães Federal Institute of Pará – Cametá, Av. Gentil Bittencourt, 1582, Cametá, 68.000-400, Pará, Brazil
Maria Leonor Garcia Melo Lopes de Araújo Federal University of Bahia, Department of Animal Science, Av. Adhemar de Barros, 500, Ondina, 40.170-110, Salvador, Bahia, Brazil
Lara Maria Santos Brant Federal University of Bahia, Department of Animal Science, Av. Adhemar de Barros, 500, Ondina, 40.170-110, Salvador, Bahia, Brazil https://orcid.org/0000-0002-8454-8895
José Esler de Freitas Júnior Federal University of Bahia, Department of Animal Science, Av. Adhemar de Barros, 500, Ondina, 40.170-110, Salvador, Bahia, Brazil

DOI:

https://doi.org/10.6000/1927-520X.2025.14.04

Keywords:

Animal nutrition, biodiesel, by-products, ethology, fatty acids, nitrogen utilization, passage rate

Abstract

The objective of this study was to evaluate the effects of two energy sources, associated or not (crude glycerin and castor oil) in buffaloes' diets on intake, digestibility, rumen kinetics, feeding behavior, nitrogen balance, microbial protein synthesis, rumen fermentation, and blood metabolites. Four ruminally-cannulated Murrah buffaloes [526 ± 29 kg of initial BW] were randomly assigned according to a 4 x 4 Latin square design in which the animals were randomly allocated to each treatment: CONT = control with soybean meal associated with ground corn; GLY = crude glycerin, dietary inclusion of 90 g/kg; CAO = castor oil, dietary inclusion of 50 g/kg; GLYCAO = crude glycerin associated with castor oil, dietary inclusions of 50 g/kg GLY and 50 g/kg CAO. A higher ruminal renewal rate of DM and NDF and DM passage rate was observed for animals fed CON and GLY than the other diets (P < 0.05), the same fact was observed for rumination efficiency grams DM/hour (P < 0.001). Among the feed sources, crude glycerin can partially replace ground corn in the buffalo’s diet without compromising intake, nutrient metabolism, and rumen dynamics.

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