Fatores que afetam o consumo de matéria seca em bovinos nelores confinados

Abstract

The general objective of this literature review was to show that in the confinement system, in particular, the dry matter consumption of animals is influenced by a series of factors. Consumption limitation can be through physical, chemical and metabolic, psychogenic means and water intake. Some authors describe that the chemical composition of the diet, different races, ages, sexes and environmental factors are also important factors in dry matter intake and must be taken into account. Physical factors are related to the filling capacity of the digestive tract, chemical and metabolic factors are related to the satiety of animals based on the amount of nutrients in the diet. Furthermore, the quality and quantity of water supplied to animals is important, as without it food intake is lower, and the other factor is weather events such as rain, excessive cold and extreme heat. An experiment was carried out with 160 Nelore animals confined during the rainy season and the objective was to evaluate the influence of rain on dry matter consumption. The diet consisted of fresh sugar cane bagasse, cottonseed cake, soybean meal, ground corn, ground sorghum, urea and mineral core. The study identified no variation in consumption with different rainfall levels.