Jiménez-Cabán, Esbal

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    Efecto de la adición en el alimento de aguas residuales de una planta productora de caramelo sobre el desempeño de cerdos desde el destete hasta terminado
    (2003) Jiménez-Cabán, Esbal; Latorre-Acevedo, José R.; College of Agricultural Sciences; Rodríguez Catias, Abner A.; Fernández Van Cleve, John A.; Latorre Acevedo, José R.; Santana Nieves, Carmen S.; Department of Animal Science; Mari Mutt, José A.
    Twenty-four crossbred pigs (Duroc X Yorkshire), of 28 days of age with an average live weight of 6.9 kg, were used to evaluate the addition to the diet of 0 (control), 5, and 7.5 % of wastewater from a caramel production plant (WWCP) on the pigs’ performance, blood metabolites, and carcass characteristics from weaning to finishing (82 kg average live weight). A completely randomized block design was used (n=4). Pigs were fed on an 8 % body weight basis during the post-weaning phase (21 days) and on a 6 % basis for the rest of the investigation. Dry matter intake, weight gain and feed efficiency were improved with 7.5 % addition of WWCP during the post-weaning phase (P≤.08). Over the fattening-finishing phase, the daily dry matter intake and daily weight gain were greater in the control group, while feed efficiency improved with the addition of WWCP during the finishing period (P≤.08). Longissimus dorsi area and ham weight were greater in females compared with barrows (P≤.08), but no differences were detected by the addition of WWCP. Blood samples were taken by jugular venipuncture on day 1 and 8 of the post-weaning phase, and on the day before slaughter to determine glucose and sodium concentrations; both concentrations were greater in the bleeding previous to slaughter (P≤.08). WWCP’s aerobic stability was evaluated in a 4-week trial and it was found that butyric acid concentration was reduced in the third week, while pH gradually decreased over the four weeks (P≤.08). The results obtained in this research suggest that pig’s performance at weaning can be improved with the addition for 21 days of WWCP to the diet in levels up to 7.5 % for 21 days during this phase. On the other hand, more research is required about the use of this wastewater during the fattening-finising phase before giving any recommendation.