Sodium lasalocid and concentrate/roughage ratio effects on productive performance of lactating cows

Authors

  • Carlos de Sousa Lucci Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Nutrição e Produção Animal, Pirassununga, SP
  • Paulo Henrique Mazza Rodrigues Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Nutrição e Produção Animal, Pirassununga, SP
  • Laércio Melotti Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Nutrição e Produção Animal, Pirassununga, SP

DOI:

https://doi.org/10.1590/S1413-95961999000100010

Keywords:

Lasacid, Milk production

Abstract

Four crossbred Holstein 2 month lactating cows with 470 kg of average live-weight, fitted with rumen canulas, were used in a change over design, in a 2 x 2 factorial arrangement with four treatments: without or with sodium lasalocid (200 mg/cow/day); and two concentrate/roughage ratios: 30%-70% and 60%-40%. Milk and fat production, dry matter consumption, ruminal pH and liquid turnover rates were measured. Lasalocid resulted in higher but not statistically significant increase in milk production with the 70% roughage diet. Rich concentrate diets (60%) resulted in higher, but not statistically significant, dry matter consumption; these diets increased milk, fat corrected milk and milk protein production, and decreased fat milk production, as well as the ruminal pH at 6 hours after the first meal.

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Published

1999-01-01

Issue

Section

ZOOTECHNICS

How to Cite

Sodium lasalocid and concentrate/roughage ratio effects on productive performance of lactating cows. (1999). Brazilian Journal of Veterinary Research and Animal Science, 36(1), 51-56. https://doi.org/10.1590/S1413-95961999000100010