With the ongoing challenges of drought, including higher feed prices and the reliance on alternative supplements, producers may be weighing up how and why to feed roughage to their herds over winter.
Livestock require a minimum amount of fibre and long roughage to maintain healthy digestive function, even if some of it is left uneaten. This is often referred to as the “scratch factor,” which stimulates rumination and crucial cud chewing.
Failing to provide enough roughage when feeding grain or pellets can cause serious health issues, such as acidosis or grain poisoning.
Furthermore, as the region moves deeper into winter, hay may be needed to reduce the risk of grass tetany and to provide a practical vehicle for administering Causmag.
Cold weather also increases a animal’s physical demand for roughage. Livestock need to consume more roughage during the winter months to give them the energy required for heat production. The fermentation and breakdown of cellulose in the rumen generates internal heat, effectively helping to keep the livestock warm from the inside out.
If animals do not receive enough roughage during freezing conditions, their weight can drop rapidly as they are forced to burn body fat simply to generate warmth. To combat this, it is recommended to feed roughage late in the afternoon so that the
digestive fermentation process provides maximum heat through the coldest hours of the night.
For further information, livestock owners can contact their local veterinarian, or Agriculture Victoria animal health and extension staff.
By Dr Jeff Cave, Senior Veterinary Officer
