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Extra challenges for livestock

THE winter/early spring period can give rise to a number of disease challenges for livestock, especially in years when feed has been tight and body condition not as high as it could be.

Beef and Lamb New Zealand points to the increased metabolic demand on pregnant animals that continues beyond birth and into lactation.

“The energy required to sustain pregnancy and lactation has to come from somewhere and may require an animal to divert energy spent on its immune system to other parts of its physiology,” a B+LNZ spokesman said.

“Two broad categories of such disease are metabolic and infectious/contagious.

“Metabolic diseases include such conditions as hypocalcaemia (milk fever), hypomagnesaemia (staggers), pregnancy toxaemia (sleepy sickness), and ketosis. These are generally prevented through diet or supplementation and can be treated with over-the-counter remedies.

“Infectious and contagious diseases can include conditions like abortion storms caused by Toxoplasma or Campylobacter, and outbreaks of diarrhoea caused by Salmonella or Rotavirus,” the spokesman said.

“These conditions can be rapid in their spread and severe in their effects.

“All of the diseases mentioned here can be prevented by effective vaccination.

“It is highly recommended that abortions or clusters of sick or dead animals are investigated by a veterinarian as early as possible in order to identify the cause and prevent any outbreak from worsening.

“Remember also to wash your hands and keep your equipment clean, as bacteria like Salmonella and Campylobacter can cause disease in humans as well.”

Difficulties ahead: The number of challenges that livestock face at this time of year has increased, especially when there is a feed shortage. File picture