Amino-Acetonitrile Derivatives (AADs or ‘orange’)

What do they treat?

√ Roundworm

How can they be administered?

A variety of application methods for administering pesticide products to cattle are in use.

√ Oral

• Always check label information as dose rates for cattle are often higher than those for sheep.

Resistance

Monepantel resistance not reported from cattle roundworms, however, resistance has been reported from Australia in the closely related sheep barber’s pole worm (Haemonchus contortus).

Safety

• Generally AADs have a wide margin of safety to mammals.

Everyone working in the rural industry has a ‘duty of care’; a legal obligation to provide a safe workplace for everyone on the property.

Withholding

• Always check the product label before use for specific withholding periods (WHP) and export slaughter interval (ESI) periods. Current ESI periods can be confirmed on the APVMA website.

Withholding periods are mandatory with all registered veterinary products used to treat animals for internal and external parasites.

Types of amino-acetonitrile derivative

A guide to the different actives and the pests they affect are in Table 1. See the ParaBoss Products Search Tool for the appropriate formulation and application method for your target pest. Note combinations and mixtures of actives may improve treatment efficacy.

Table 1. AADs, their active(s), combinations and mixtures and a summary of the targeted parasites for which formulations are registered for. Check marks indicate the pest targeted by the active(s).

What are they?

AADs are a new class of synthetic anthelmintics with broad-spectrum activity against roundworms that are resistant to the benzimidazoles, imidazothiazoles and macrocyclic lactones.

How do they work?

The mode of action of AADs is to cause paralysis in roundworms by binding to a receptor that has only been found in roundworms.