Effects of sodium lasalocid levels and adaptation times, upon apparent digestibility of total diet for cows

Authors

  • Kleber da Cunha Peixoto Júnior Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, São Paulo, SP
  • Carlos de Souza Lucci Universidade de Santo Amaro, São Paulo, SP
  • Fabiano Rezende Amaro Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, São Paulo, SP
  • Paulo Henrique Mazza Rodrigues Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, São Paulo, SP
  • Tatiana Ferrante de Almeida Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, São Paulo, SP
  • Marcos Veiga Santos Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, São Paulo, SP

Keywords:

sodium lasalocid, ruminal degradability, dairy cattle

Abstract

The aim of this experiment was to evaluate the effects of period of action and levels of sodium lasalocid on total diet apparent digestibility. Experimental design used was a 4 x 4 Latin Square with repeated measures on time using four rumen cannulated cows, with average of 500 kg of body live weight. The experiment was conducted in subperiods of 42 days, divided in 28 days for data collection and 14 days for eliminating the carryover effects of treatments. Diets were formulated using Coast Cross hay (82 % neutral detergent fiber and 8% crude protein) and concentrate (8.5% soybean meal, 41% ground corn and 0.5% of mineral supplement) in a proportion of 1:1. Treatment arrangements included four different times of action (0 to 7, 8 to 14, 15 to 21 and 22 to 28 days) and four levels of sodium lasalocid per animal per day (zero, 50 mg, 100 mg and 200 mg). Results showed no effects of treatments x time interaction on diet apparent digestibility. Levels of sodium lasalocid did not alter crude protein, crude fiber, ether extract apparent digestibility or the total digestible nutrients, however, dry matter digestibility was increased (8.0% to 8.3%) linearly by levels of sodium lasalocid and, a quadratic effect on non nitrogen extract was registered. Based on results obtained in this study it can be concluded that sodium lasalocid had no effects on total diet apparent digestibility (CP, CF, EE and TDN), except for DM and NNE apparent digestibility.

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Published

2013-12-02

Issue

Section

ANIMAL NUTRITION

How to Cite

Effects of sodium lasalocid levels and adaptation times, upon apparent digestibility of total diet for cows. (2013). Bulletin of Animal Husbandry, 58(1), 113-123. http://bia.iz.sp.gov.br/index.php/bia/article/view/1395