eiru_reports_farm/templates.xml

<?xml version="1.0" encoding="UTF-8"?>
<openerp>
  <data>
    <template id="eiru_reports_farm_assets" inherit_id="eiru_assets.assets">
      <xpath expr="." position="inside">
        <link rel="stylesheet" href="/eiru_reports_farm/static/src/css/custom.css"/>

        <!-- configuration < main > -->
        <script type="text/javascript" src="/eiru_reports_farm/static/src/js/main.js"/>
        <script type="text/javascript" src="/eiru_reports_farm/static/src/js/reporting_base.js"/>

        <!-- Listado de animales -->

        <script type="text/javascript" src="/eiru_reports_farm/static/src/js/reports/report_farm_animal.js"/>

      </xpath>
    </template>
  </data>
</openerp>