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Please use this identifier to cite or link to this item: http://hdl.handle.net/1807/7052

Title: Effect of urea addition on chemist composition and in vitro dry matter digestibility of Brachiaria humidicola   (Rendle) Schweick hay harvesd at different cutting ages
Authors: N. Rodríguez-Romero
O. Araujo-Febres y B. González
Keywords: urea treatment, maturity, hay, Brachiaria humidicola.
tratamiento con urea, madurez, heno, Brachiaria humidicola.
Issue Date: 31-Dec-2004
Publisher: Asociacion Latinoamericana de Produccion Animal
Citation: Archivos Latinoamericanos de Produccion Animal (ISSN: 1022-1301) Vol 12 Num 2
Abstract: With the purpose of evaluating the effect of the urea addition of the hay of Brachiaria humidicola at differents cutting ages on dry matter (MS), ash and nitrogen content (N) and digestibility in vitro of the dry matter (DIVMS) a research was carried out under tropical dry forest conditions at Perija region in Venezuela. The desing used was a completely randomized with a split plot arragement and three repetitions. In the main plots were located the five strip of the cutting ages (30, 44, 58, 72 and 86 days) for the hay production, using one hectare with Brachiaria humidicola with an effective area of 102 m2 for each cutting ages strip. The chopped hay was placed in plastic bags and it was added 0, 3 and 6% of urea diluted with 40% of water in relation to the dry weight of the hay. It was stored for 28 days at ambient temperature. Samples from hay were taken for MS content, ash and N and DIVMS. The results show a effect of the urea adddition (P<0.0001) on the variables, with increasing of N from 1.2 to 2.9% and DIVMS from 65.1 to 70.8%; the MS and ash content decresing from 93.8 to 69.6% and from 6.2 to 5.7%, respectively. Showed an effect of the cutting age (P<0.005) on the variables, with decreasing in the ash content (from 7.4 to 5.3%), N content (from 2.1 to 1.6%), and DIVMS (from 71.0 to 64.8%) from 30 to 86 days, respectively. The DIVMS was affected (P<0.005) by the interaction cutting age x urea treatments, with the valor more high of 74.2% at 30 days of cutting age with 3% of urea.
URI: http://hdl.handle.net/1807/7052
Other Identifiers: http://www.bioline.org.br/abstract?id=la04007
Rights: © Copyright 2004 ALPA. Arch. Latinoam. Prod. Anim.
Appears in Collections:Bioline International Legacy Collection

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