Oestrus ovis (Diptera: Oestridae) un importante ectoparásito en ovinos de cuatro cantones del municipio de Sorata provincia Larecaja, departamento de La Paz
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J.Selva Andina Anim. Sci.
Abstract
El estudio de Oestrosis en ovinos se realizó en los cantones de Sorata, Obispo Bosque, Laripata e Ilabaya, pertenecientes al Municipio de Sorata, bajo el convenio realizado con la institución Servicio Departamental Agropecuario (SEDAG) entre los meses de Agosto y Septiembre del 2002, habiéndose faenado 164 cabezas de ovinos de los cuales 151 cabezas presentaron Oestrus ovis, 13 fueron negativos, tomando en cuenta los factores cantón, sexo, edad y numero de larvas por animal. La prevalencia de Oestrosis en Sorata fue de 39% y por cantón Obispo Bosque 28%, Ilabaya y Laripata 18% y 15% respectivamente. Al análisis de varianza para cuantificar el número de larvas por cantón no presentó diferencias significativas (P>0.005) al igual que para el factor sexo y edad lo que significa que el cantón Sorata, Obispo bosque, Laripata e Ilabaya tienen igual % de Oestrosis para el factor edad no hay diferencia significativa entre hembras y machos ni grupos de edad 1 y 2. El análisis de varianza para determinar las diferencias en el número de larvas por cantón, sexo, edad y estadio larvario tampoco existe diferencias significativas, sin embargo, considerando el estadio larvario si existe diferencias significativas (P<0.005) ya que se muestra mayor número de larvas en el estadio L-1 que L-2 y L-3. En este sentido, la Oestrosis afecta a todos los cantones en estudio sin distinción de grupos de edad, sexo, variando sin embargo en la presencia de diferentes estadios larvarios, donde L-1 predomina.
The study of Oestrosis in sheep was carried out in the cantons of Sorata, Obispo Bosque, Laripata and Ilabaya, belonging to the Municipality of Sorata, under the agreement made with the institution Departmental Agricultural and Livestock Service (SEDAG) between August and September 2002, with 164 heads of sheep out of which 151 heads were Oestrus ovis, 13 were negative, taking into account the factors canton, sex, age and number of larvae per animal. The prevalence of Oestrosis in Sorata was 39% and by corner Obispo Bosque 28%, Ilabaya and Laripata 18% and 15% respectively. The analysis of variance to quantify the number of larvae per canton did not present significant differences (P> 0.005) as well as for the sex and age factor, which means that the canton Sorata, Obispo Bosque, Laripata and Ilabaya have equal % of Oestrosis for The age factor is not significant difference between females and males nor groups of age 1 and 2. Analysis of variance to determine the differences in the number of larvae per canton, sex, age and larval stage also does not exist significant differences, however, considering (P <0.005) because there are more larvae in the L-1 stage than L-2 and L-3. In this sense, Oestrosis affects all the cantons under study without distinction of age groups, sex, however varying in the presence of different larval stages, where L-1 predominates.
The study of Oestrosis in sheep was carried out in the cantons of Sorata, Obispo Bosque, Laripata and Ilabaya, belonging to the Municipality of Sorata, under the agreement made with the institution Departmental Agricultural and Livestock Service (SEDAG) between August and September 2002, with 164 heads of sheep out of which 151 heads were Oestrus ovis, 13 were negative, taking into account the factors canton, sex, age and number of larvae per animal. The prevalence of Oestrosis in Sorata was 39% and by corner Obispo Bosque 28%, Ilabaya and Laripata 18% and 15% respectively. The analysis of variance to quantify the number of larvae per canton did not present significant differences (P> 0.005) as well as for the sex and age factor, which means that the canton Sorata, Obispo Bosque, Laripata and Ilabaya have equal % of Oestrosis for The age factor is not significant difference between females and males nor groups of age 1 and 2. Analysis of variance to determine the differences in the number of larvae per canton, sex, age and larval stage also does not exist significant differences, however, considering (P <0.005) because there are more larvae in the L-1 stage than L-2 and L-3. In this sense, Oestrosis affects all the cantons under study without distinction of age groups, sex, however varying in the presence of different larval stages, where L-1 predominates.
Description
Vol. 4, No. 1