Efecto nutraceutico de los taninos condensados libres de lysiloma acapulcensis (kunth) benth sobre la infestación parasitaria y respuesta productiva de borregos

Abstract

Forty-five Pelibuey sheep were experimentally infected with nematodes to evaluate the effect of three free condensed tannin (FCT) levels of Lysiloma acapulcensis on faecal egg counts (FECs), packed cell volumes (PCV), ocular mucosa colours (OMC), average daily gain (ADG), and adult nematode count. Five treatments were used: 12.5, 25.0, and 37.5 mg of FCT kg−1 of body weight (BW); sterile water (control); and ivermectin (0.22 mg kg−1 of BW) as chemicalgroup. The data were processed through repeated measurement analysis. Even though the three FCT doses decreased (P < 0.05) the FEC, the highest reduction was obtained with 37.5 mg kg−1of BW. No differences were observed in PCV and OMC. Higher ADG (P < 0.05) was observedwith 37.5 mg kg−1 of BW of FCT. The count of adult nematodes (females and males) in the higher dose of FCT was similar to chemical treatment. Dose of 37.5 mg kg−1 of BW decreased the parasite infection and improved the lamb performance. Therefore, this dose could be used as a nutraceutic product in sheep production.