Resumen

SANDOVAL, Espartaco et al. Effect of antihelmintic and antianemic treatments on gain weight and haemato chemical indicators in tropical sheep infected under natural conditions. Zootecnia Trop. [online]. 2007, vol.25, n.4, pp.285-290. ISSN 0798-7269.

Recognizing the relevance of the infections by digestive estrongile as a limiting factor to the exploitation of small ruminants, it was planned a study to evaluate the effect of that a anthelmintic and antianemic simultaneous treatment might exert on the gain weight, hematological values, and some indicators of blood chemistry. Forty West African cross breed sheep with a weight average of 22.2 kg and 19.2 months old, were raised under an agroforestry system and infected under natural conditions. During the intermediate rainfall time, the sheep were evaluated every 15 days during four months and the following items recorded: strongylid egg per gram counts (epg), daily gain weight (DGW), haematocrit (Ht), hemoglobin (Hb), total proteins (PT), albumin, and globulins. During the fourth sampling it was applied simultaneously an anthelmintic and antianemic treatment. The results showed a high effectiveness of the product (95.7%) when compared before (BT) and after treatment (AT). The DGW was significantly higher after the treatment application (P<0.05). The observed values BT of Ht and Hb were compatible with anemia, but these values were increased in AT sheep (P<0.001). The PT in BT was attributable to a protein deficit in the diet, associated with a reduced appetite which is common in strongylid infestation process. No significantly differences were observed in the values of globulins, indicating a moderate humoral response. It is concluded that the simultaneous application of the anthelmintic and antianemic treatment resulted in higher weight gain, improved the haematological parameters (haematocrit and hemoglobin), as well the total proteins values

Palabras clave : haematocrit; hemoglobin; nematode; antihelmintic; weight gain.

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