Madrid – Spain
Sustainability of pig production on Legumes and Acorns
Sustainable pig production is characterized by economic profitability through improvement of productive output, while maintaining animal health and welfare, and without compromising environmental resources. Improved feed efficiency may result in a mismatch between energy input from feed, and energy output to production and vital metabolic functions. This may in particular affect sustainability of pig production and farm profitability on low quality feeds. At INIA we investigate feed efficiency in Spanish purebred Iberian, and crossbred Iberian x Duroc pig lines. Purebred Iberian pigs are native to the Iberian peninsula, are slow growing, exhibit good appetite, have a propensity to obesity and high intramuscular fatness, and they provide pig products of superior quality. They are reared on pasture in a semi-extensive production system called Montanera, where they consume acorns, grass, small roots, and bulbs from November to February in the Dehesa. We investigate feed efficiency in cooperation with one of the largest Iberian pig producers in Spain. Crossbred Iberian x Duroc pigs grow faster and are leaner than purebred Iberian pigs. Crossbreds are managed under regular intensive conditions. We investigate feed efficiency in Iberian x Duroc pigs in cooperation with ITACYL.
Iberian x Duroc pigs fed conventional diets
Together with ITACYL, in a first series of experiments, which is partly funded by our Spanish National IBERFIRE project, we investigate feed efficiency in Iberian x Duroc pigs fed a regular commercial diet. The relationship between growth parameters, feed efficiency, and stress parameters in blood is investigated.
Iberian x Duroc pigs fed local legumes
In a second series of experiments, we investigate feed efficiency in Iberian x Duroc pigs fed a diet including an incremental amount of local legumes. Measurements are related to blood biomarkers, metagenomic variation patterns, stress parameters (including infrared thermography), and behavioral tests.
Iberian pigs fed acorns
In a third series of experiments, we investigate feed efficiency in purebred Iberian pigs fed acorns, both intensively and in the in the Dehesa. Measurements are related to stress parameters (including infrared thermography).
– Wendy Mercedes Rauw
– Luis Alberto García-Cortés
– Luis Gomez-Raya
– M. Carmen Rodriguez-Valdovinos
– Luis Silió
– Yolanda Nuñez
– Rita Benítez
– Fabian García