Resumen

COLINA, Janeth J et al. Hematology, Blood Metabolites and Organ Weights of Growing Pigs Fed Peach-Palm Meal (Bactris gasipaes H.B.K.) and Lysine. Rev. Fac. Cienc. Vet. [online]. 2010, vol.51, n.1, pp.51-62. ISSN 0258-6576.

To evaluate the hematology, blood metabolites, and organ weights in growing pigs fed peach-palm meal (PPM) and synthetic lysine (SL), 72 crossbred (Yorkshire x Landrace) barrows (30±0.5 kg) were used. Pigs were allotted into six treatments in a completely randomized design with a 2 x 3 factorial arrangement, with two levels of SL (0 and 0.27%) and three levels of PPM (0, 25 and 50%), with four replications per treatment and three pigs per experimental unit. The study lasted six weeks and blood samples were collected at the onsent of the assay and at third and sixth weeks. The hematological variables evaluated were hemoglobin, erythrocytes and leukocyte count, total leukocyte count, hematocrit, mean corpuscular volume (MCV), mean corpuscular hemoglobin concentration (MCHC). Blood metabolites evaluated were: total plasma proteins, urea, glucose, fructosamine, alanine aminotransferase (ALT), aspartate aminotransferase (AST). At the end of the trial, 24 pigs were slaughtered (four/treatment) and the lungs, heart, stomach, pancreas, small intestine, liver, spleen, and kidneys were weighed. The PPM x SL interaction did not significantly influence the variables studied. The SL did not affect hematology, while PPM (25 and 50%) significantly decreased erythrocyte count (P<0,05), hematocrit (P<0,05) and hemoglobin (P=0.09), without significant variations in MCV, MCHC, and leukocyte count, when compared to pigs that were fed no PPM. Pigs fed PPM had lower total proteins(P<0.01) and the SL reduced urea (P<0.05). The AST was lower (P=0.01) in pigs fed SL than in pigs without SL. Pigs that consumed 25% PPM tended to have (P=0.10) heavier stomachs than those fed basal diet or 50% PPM (P=0.06). Pigs fed 25 and 50% PPM exhibited the lightest spleens (P<0.01), compared to those without PPM. The PPM together with SL in the diet of growing pigs had no detrimental effects on hematological variables, blood metabolites, and organ weights.

Palabras clave : Pigs; Bactris gasipaes; lysine; hematology; metabolites; weight; organ.

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