Nutritional value of pre-dried banana tree pseudostem ammoniated with protected urea

João Paulo Sampaio Rigueira, Nathália Gonçalves de Jesus, Eleuza Clarete Junqueira de Sales, Vicente Ribeiro Rocha Júnior, Alexandre Soares dos Santos, Fredson Vieira e Silva, Carlos Juliano Brant Albuquerque, Marcos Felipe Pereira da Silva, Marielly Maria Almeida Moura, Flávio Pinto Monção

Abstract


The objective of this study was to evaluate the chemical composition, pH and rumen degradability of banana tree pseudostems pre-dried and ammoniated with different doses of urea (0, 0.5, 1.0, 1.5 and 2.0% in natural matter). The experiment consisted of five treatments (doses of urea) with six replications, following a completely randomized design. There was a linear increase in the pH (P < 0.01) of the banana tree pseudostems pre dried with the inclusion of urea. There was no difference (P > 0.05) in dry matter, ash, neutral detergent fiber, acid detergent fiber, lignin, non-fibrous carbohydrates and total digestible nutrients; the averages were 31.58, 18.82, 46.43, 9.30, 11.87 and 42.52%, respectively. The inclusion of 2% urea increased the crude protein content (P < 0.01) by 42.75%, the soluble fraction "a" by 31.82%, and the potential and effective degradability of dry matter by 15.49% compared to that of the control group (without urea). The potentially degradable fraction, time of colonization and ruminal repletion of the neutral detergent fiber of the pre-dried banana tree pseudostems were not altered with the inclusion of urea (P > 0.05). The ammonization of the pre-dried banana tree pseudostems with 2% of urea improved the chemical composition and rumen degradability of the dry matter.

Keywords


Chemical composition; Ruminal kinetics; Fiber; Ruminal repletion.

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DOI: http://dx.doi.org/10.5433/1679-0359.2020v41n4p1345

Semina: Ciênc. Agrár.
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DOI: 10.5433/1679-0359
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