Dietas ajustadas para suínos através do modelo InraPorc®: desempenho, características de carcaça e impacto econômico

Abstract

RESUMO O objetivo deste trabalho foi avaliar o desempenho animal, as características de carcaça e os custos para suínos alimentados com dietas ajustadas, para condições brasileiras

Application of a precision nutrition tool for growing and finishing pigs

“…No differences between treatments agree with other researchers who used the InraPorc ® model as a tool to adjust nutritional programs (Quiniou et al, 2009;Rossi et al, 2013).…”

“…High environmental temperatures reduce voluntary feed intake in pigs during heat stress (Quiniou et al, 2001;Huynh et al, 2005;Kiefer et al, 2010;Batista et al, 2011) because the intake mechanisms are regulated for the short and long-term processes, which influence the partition of energy between maintenance and deposition (Hauschild et al, 2010;Batista et al, 2011;Hauschild et al, 2012;Rossi et al, 2013;Warpechowski et al, 2014). The InraPorc ® deterministic model characterizes the pig in thermal comfort, in heat stress, or under other factors that influence the voluntary feed intake (Van Milgen et al, 2008;Hauschild et al, 2012;Rossi et al, 2013), but does not consider environmental effects directly. However, if the animal profile is adjusted in specific climatic conditions, its requirements and the nutritional adjustment are more accurate.…”

“…This model integrates a dynamic, mechanistic, and deterministic approach through different aspects related to nutrition, feeding, genetics, environment, and animal behavior, serving as a decision system for the nutritional adjustment of pigs (Van Milgen et al, 2008). InraPorc ® estimates nutritional requirements and animal growth, considering the variation among animals, providing greater accuracy in nutrient supply (Quiniou et al, 2009;Brossard et al, 2010) and reducing the inclusion of essential amino acids and energy in the diet, reducing diet elaboration costs (Rossi et al, 2013).…”

Modeling performance and nutritional requirements of pigs lots during growth and finishing

“…The data for each scenario were modeled based on the average animal for all the parameters and 2% diet loss was estimated (BROSSARD et al, 2009). The animal performance curves were calibrated and the nutritional requirements were modeled (ROSSI et al, 2013) to the standard animal profile and the six animal profiles evaluated. The data were submitted to descriptive statistical analysis and compared using absolute relation to the standard deviation.…”