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Article

Crude Glycerol Increases Neutral Detergent Fiber Degradability and Modulates Rumen Fermentative Dynamics of Kikuyu Grass in Non-Lactating Holstein Cows Raised in Tropical Conditions

by
Diana Marcela Valencia-Echavarria
1,2,
Yury Tatiana Granja-Salcedo
1,*,
Jorge Guillermo Noriega-Marquez
1,
Luis Alfonso Giraldo Valderrama
2,
Julián Andrés Castillo Vargas
3 and
Telma Teresinha Berchielli
4
1
Centro de Investigación el Nus, Corporación Colombiana de Investigación Agropecuaria-AGROSAVIA, San Roque 053037, ANT, Colombia
2
Departamento de Producción Animal, Universidad Nacional de Colombia, Medellín 050034, ANT, Colombia
3
Instituto Federal de Educação, Ciência e Tecnologia do Maranhão, Buriticupu 65393-000, MA, Brazil
4
Departamento de Zootecnia, Universidade Estadual Paulista “Júlio de Mesquita Filho”, Jaboticabal 14887-900, SP, Brazil
*
Author to whom correspondence should be addressed.
Dairy 2024, 5(3), 480-490; https://doi.org/10.3390/dairy5030037
Submission received: 26 June 2024 / Revised: 6 August 2024 / Accepted: 13 August 2024 / Published: 16 August 2024
(This article belongs to the Topic Effects of Dietary Interventions on Farm Animal Welfare and Production)
Review Reports Versions Notes

Abstract

This study evaluated the effects of increasing levels of crude glycerol (CG) on the effective degradability of neutral detergent fiber (EDNDF) in Pennisetum clandestinum Hochst. Ex Chiov (kikuyu forage) and ruminal fermentation parameters in grazing dairy cows. Four non-lactating cannulated Holstein cows were used in a 4 × 4 Latin square design. Treatments consisted of CG infusion in the rumen at the following levels: 0 (G0), 500 (G500), 1000 (G1000), and 1500 (G1500) g/animal/day. Two kikuyu forages harvested (D) at 35 (DR35) and 45 (DR45) days of regrowth were incubated in the rumen for 72 h. The infusion of CG into the rumen increased (p < 0.05) EDNDF in both incubated forages. Total volatile fatty acids (VFAs) and pH values in the ruminal fluid were unaffected (p > 0.05) by the infusion of CG. However, propionate and butyrate molar proportions increased (p < 0.05) at the expense of acetate at all CG levels. In addition, the NH3-N levels decreased (p < 0.05) by approximately 20% with the infusion of 1000 and 1500 g of CG. In conclusion, supplementation with CG increases ruminal EDNDF, improving rumen fermentation dynamics in cows grazing kikuyu forage under tropical conditions. This greater EDNDF was achieved for both harvesting times.
Keywords: biofuel; fermentative dynamics; sugar alcohol; tropical pasture biofuel; fermentative dynamics; sugar alcohol; tropical pasture

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MDPI and ACS Style

Valencia-Echavarria, D.M.; Granja-Salcedo, Y.T.; Noriega-Marquez, J.G.; Valderrama, L.A.G.; Vargas, J.A.C.; Berchielli, T.T. Crude Glycerol Increases Neutral Detergent Fiber Degradability and Modulates Rumen Fermentative Dynamics of Kikuyu Grass in Non-Lactating Holstein Cows Raised in Tropical Conditions. Dairy 2024, 5, 480-490. https://doi.org/10.3390/dairy5030037

AMA Style

Valencia-Echavarria DM, Granja-Salcedo YT, Noriega-Marquez JG, Valderrama LAG, Vargas JAC, Berchielli TT. Crude Glycerol Increases Neutral Detergent Fiber Degradability and Modulates Rumen Fermentative Dynamics of Kikuyu Grass in Non-Lactating Holstein Cows Raised in Tropical Conditions. Dairy. 2024; 5(3):480-490. https://doi.org/10.3390/dairy5030037

Chicago/Turabian Style

Valencia-Echavarria, Diana Marcela, Yury Tatiana Granja-Salcedo, Jorge Guillermo Noriega-Marquez, Luis Alfonso Giraldo Valderrama, Julián Andrés Castillo Vargas, and Telma Teresinha Berchielli. 2024. "Crude Glycerol Increases Neutral Detergent Fiber Degradability and Modulates Rumen Fermentative Dynamics of Kikuyu Grass in Non-Lactating Holstein Cows Raised in Tropical Conditions" Dairy 5, no. 3: 480-490. https://doi.org/10.3390/dairy5030037

APA Style

Valencia-Echavarria, D. M., Granja-Salcedo, Y. T., Noriega-Marquez, J. G., Valderrama, L. A. G., Vargas, J. A. C., & Berchielli, T. T. (2024). Crude Glycerol Increases Neutral Detergent Fiber Degradability and Modulates Rumen Fermentative Dynamics of Kikuyu Grass in Non-Lactating Holstein Cows Raised in Tropical Conditions. Dairy, 5(3), 480-490. https://doi.org/10.3390/dairy5030037

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