43 Nutritional management for tropical-subtropical-adapted cattle receiving high-concentrate diets

Feedlot Cattle Response to Rumen Undegradable Protein and Diet Fiber Level of High Concentrate Diets

.............................................................................23 Introduction.........................................................................24 Materials and Methods............................................................26 Statistical Analysis........................................................28 Results and Discussion...............................................

Tropical and Subtropical Agroecosystems

Tropical and Subtropical Agroecosystems

Influence of disodium malate on microbial growth and fermentation in rumen-simulation technique fermenters receiving medium- and high-concentrate diets.

Two incubation trials were carried out with the rumen-simulation technique (RUSITEC). In each trial, four vessels received a diet of grass hay and concentrate (600 and 400 g/kg DM, respectively; diet F), and the other four were fed a diet composed of concentrate and barley straw (900 and 100 g/kg DM, respectively; Diet C). Vessels were given 20 g of the corresponding diet daily, and half of the...

Tropical and Subtropical Agroecosystems

SUMMARY Thyroid hormones and their receptors in the ovaries are active regulators of reproductive function; both hyper-and hypo-thyroidism may result in estrous cycle disturbances. In addition, thyroid hormones elicit an extraordinary multiplicity of biochemical, cellular, and physiological responses, both in the simplest and the most complex organisms. On the other hand, glutamate, the main ex...