farm/views/pregnancy_diagnosis_event.xml

<?xml version="1.0" encoding="UTF-8"?>
    <openerp>
        <data>
            <record id="view_pregnancy_diagnosis_event_tree" model="ir.ui.view">
                <field name="name">pregnancy_diagnosis_event.tree</field>
                <field name="model">farm.pregnancy_diagnosis.event</field>
                <field name="mode">primary</field>
                <field name="inherit_id" ref="view_abstract_event_tree"/>
                <field name="arch" type="xml">
                    <field name="lot" position="after">
                            <field name="result"/>
                            <field name="timestamp"/>
                    </field>     
                </field>
            </record>
            <record id="view_pregnancy_diagnosis_event_form" model="ir.ui.view">
            <field name="name">pregnancy_diagnosis.form</field>
            <field name="model">farm.pregnancy_diagnosis.event</field>
            <field name="mode">primary</field>
            <field name="inherit_id" ref="view_abstract_event_form"/>
            <field name="arch" type="xml">
            <field name="state" position="after">
                <h1>Pregnanci Diagnosis Event</h1>
                </field>
                <field name="lot" position="after">
                        <group>
                            <field name="result" />
                            <field name="female_cycle" attrs="{'readonly' : True}"/>     
                        </group>
                </field>     
            </field>
        </record>   
        </data>
    </openerp>