The aim of this work was to analyse the population of aerobe and anaerobe facultative Gram-negative rod-shaped in the ruminal fluid of dairy cattle and calves fed with different sources of tropical forage. Samples of ruminal fluid were collected from 30 cows fed with sorghum silage, 32 cows fed...

The objective of this work by evaluating consumption, production and processing of milk from cows fed diets containing increasing levels of urea. 8 cows were used 7/8 Holstein/Gir Dairy in two 4×4 Latin squares, each square composed of four diets, four cows and four experimental periods. Diets were ...

We evaluated the effect of four different forage sources on the performance of crossbred dairy cows under tropical conditions. The experiment was carried out on the Experimental Farm of the Agricultural Research Company of Minas Gerais, in Felixlândia-MG, Brazil. Twelve crossbred F1 Holstein × Gir...

The objective of this study was to economically compare a corn silage diet supplemented with 1.3 kg/day of concentrate with sugarcane diets supplemented with a 9:1 mixture of urea plus ammonium sulphate and increasing levels o concentrate (1.3, 2.0, or 2.7 kg/day). Twelve Holstein and eight Brown...

The objective of this trial was to economically compare a sugarcane plus soybean meal diet with diets containing sugarcane supplemented with increasing levels of a 9:1 premix of urea and ammonium sulphate (0.4, 0.8% and 1.2%). Cows were maintained in tie stalls and were fed ad libitum twice a day....