Effects of sodium lasalocid levels and adaptation times upon ruminal degradabilities of Coast-cross hay (Cynodon dactylon) and soybean meal in dairy cattle

Authors

  • Carlos de Sousa Lucci Universidade de Santo Amaro, São Paulo, SP
  • Kleber da Cunha Peixoto Júnior Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, 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, aparent diggestibility, dairy cattle

Abstract

The objectives of the present study were to determine the effects of time of adaptation and different levels of sodium lasalocid on soybean meal dry matter and crude protein degradability on Coast Cross hay (Cynodon dactylon) dry matter and neutral detergent fiber degradability. Experimental design used was a 4 x 4 Latin Square with repeated measures on time using four rumen cannulated cows, with an average live weight of 500 kg. The experiment was conducted in subperiods of 42 days, divided in 28 days for data collection and 14 days for eliminating the carry over effects of treatments. Diets were formulated using coast-cross hay (82 % NDF and 8 % CP) and concentrate (8.5 % soybean meal, 41 % ground corn and 0.5 % of mineral supplement) in a proportion of 1:1. Treatments arrangements included four different adaptation times (0 to 7, 8 to 14, 15 to 21 and 22 to 28 day) and four levels of sodium lasalocid per animal per day (zero, 50 mg, 100 mg and 200 mg). No level effects were observed on Coast-Cross hay DM and NDF effective degradability and on soybean meal DM and CP effective degradability . Effective degradability was not affected by treatment X time interaction, however sodium lasalocid levels showed a quadratic effect (P<0.05) on NDF potential degradability, with the lowest values of the potential degradability for the 100 mg level. The low quality of Coast-Cross hay used (CP=8 %) may be the main cause why DM and NDF degradability were not affected by sodium lasalocid. Based on results obtained in this study it can be concluded that sodium lasalocid does not alter the effective degradability of CP soybean meal nor the effective degradability of NDF of coast-cross hay.

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Published

2013-12-02

Issue

Section

ANIMAL NUTRITION

How to Cite

Effects of sodium lasalocid levels and adaptation times upon ruminal degradabilities of Coast-cross hay (Cynodon dactylon) and soybean meal in dairy cattle. (2013). Bulletin of Animal Husbandry, 58(1), 95-112. http://35.198.24.243/index.php/bia/article/view/1394

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