Sodium and nitrogen effect upon €œin vitro€ digestibility of Coastcross grass (Cynodon dactylon (L.) Pers.), at two cutting ages, during 2001/02 summer

Authors

  • Kathery Brennecke Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Pirassununga, SP
  • Neli Mariza Azevedo Silva Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Departamento de Ciências Agrárias, Pirassununga, SP
  • Júlio César Maciel Centro Universitário Hermínio Ometto, Araras, SP
  • Weber Soares Villas Boas Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Polo Regional de Desenvolvimento Tecnológico dos Agronegócios do Centro Leste, Ribeirão Preto, SP
  • Rosane Cláudia Rodrigues Universidade Federal do Mato Grosso, Faculdade de Agronomia e Medicina Veterinária, Departamento de Solos e Engenharia Rural, Cuiabá, MT
  • César Gonçalves de Lima Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Departamento de Ciências Básicas, Pirassununga, SP
  • Roseli Seigling Lacerda Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Pirassununga, SP
  • Marcos Roberto Ferraz Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Pirassununga, SP

Keywords:

grass coastcross, sodio chloride, digestibility, nitrogen, sodium

Abstract

The trial was developed at FZEA,USP,Pirassununga, to evaluate levels of sodium (animal salt) and nitrogen on coastcross grass (Cynodon dactylon (L.) Pers.), and intended to observe the interaction response between these composts and “in vitro” dry matter digestibility (IVDMD). By the agronomic point of view, there is no conclusive information about the sodium influence on digestion, but some data suggest that the combination sodium-nitrogen could affect digestion. The soil fertilization process was performed in randomized blocks, with factorial 4x2x2 (levels NaCl x level N x cutting ages), in 3x3m plots, 4 replicates. The cutting was conducted in 30 and 60 days during summer. The soil fertilization level were 0; 20; 40; 60kg NaCl/ha/cut and 20; 40kg N/ha/cut (urea). Five animals were used in this study. The IVDMD rate was 55.03% for the 30-days cutting age grass and 51.00% for the 60-days cutting age grass (P<0,001). For nitrogen added grass (20 and 40kg) the IVDMD rates were 51.6% and 54.34% (P<0,05) for 30 and 60 days cutting ages, respectively. The cutting time influenced most of the variables studied. A triple interaction was observed for the variable IVDMD. Data collected leaded to the following conclusions: the level of Na and N influenced IVDMD and the plant didn’t show any evidence that it was affected by the Na treatment.

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Published

2007-03-22

Issue

Section

FORAGE CROPS AND PASTURES

How to Cite

Sodium and nitrogen effect upon €œin vitro€ digestibility of Coastcross grass (Cynodon dactylon (L.) Pers.), at two cutting ages, during 2001/02 summer. (2007). Bulletin of Animal Husbandry, 64(3), 185-190. http://bia.iz.sp.gov.br/index.php/bia/article/view/1228

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