Effect of efficient microorganisms, native to Guantánamo, Cuba, on bioproductive and hematological indicators of pre-fattening pigs

Resumen

To evaluate the effect of efficient native Guantanamo microorganisms (MEAG) on bioproductive and hematological indicators of prefattening pigs, 60 pigs (Yorkshire-Landrace/Duroc), of 33 days old and average weight of 9.9 ± 1.31 kg, were used. They were distributed, according to a completely randomized design, into four groups, with 15 repetitions each. Treatments were control (without MEAG), and addition of MEAG, in doses of 1.0; 1.5 and 2.0 mL/kg of live weight/day, orally supplied. The experiment lasted 42 d. Final live weight, weight gain, daily mean gain, feed conversion, hemoglobin, hematocrit, total leukocyte, lymphocyte, eosinophil, neutrophil, monocytes, mortality and morbidity were evaluated. Final live weight of the animals that received 2.0 mL/kg of live weight/d was 3.09 kg higher than control (P <0.05), and did not differ between doses. For weight gain, mean daily gain and dietary conversion, differences were only found between the highest evaluated dose and the remaining treatments. Animals of this group were superior to control by 3.06 kg of weight gain and 72.86 g of mean daily gain. In addition, they improved dietary
conversion in 1.02 kg of consumed food/kg of weight gain. Hematological values increased with increasing doses, but within the normal range. For morbidity, differences were found between control and treated animals, without differences among the latter. It is concluded that the use of MEAG as a feed additive improves the bioproductive and hematological indicators of pre-fattening pigs.
Key words: pigs, microbial additive, productive response, health