farm/views/trasformation_event.xml

<?xml version="1.0" encoding="UTF-8"?>
<openerp>
        <data>
            <record id="view_trasformation_event_tree" model="ir.ui.view">
                <field name="name">trasformation_event.tree</field>
                <field name="model">farm.transformation.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="from_location"/>
                            <field name="to_location"/>
                    </field>     
                </field>
            </record>
            <record id="view_trasformation_event_form" model="ir.ui.view">
            <field name="name">trasformation_event.form</field>
            <field name="model">farm.transformation.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>Trasformation</h1>
                </field>
                <field name="lot" position="after">
                            
                            <field name="to_animal_type"/>
                            <field name="quantity"/>
                            <field name="to_animal"
                                attrs="{'invisible':[('to_animal_type', '=', 'group')],
                                'readonly': True}"/>
                            <field name="to_animal_group"
                                attrs="{'invisible':[('to_animal_type', '!=', 'group')]}"
                                domain="[('state', '!=', 'sold')]"/>
                            <field name="from_location"/>
                            <field name="to_location"/> 
                            <field name="move"
                                attr="{'invisible':[('state', '=', 'draft')]"/>   
                </field>     
            </field>
        </record>   
        </data>
    </openerp>