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Home Annual Program for Cattle Annual Program for Cattle in Southern and Central Slopes and Tablelands NSW

Annual Program for Cattle in Southern and Central Slopes and Tablelands NSW

Ticks

 Cattle tick is not usually a problem in this region

Problem ticks

  • Bush tick rise in spring or with wet season, adults most numerous in spring and summer. Routine control measures for bush tick are generally not warranted.

Flies

 Buffalo flies are not a concern in this region.

  • Climate largely unsuitable for buffalo fly.

Lice

Lice on cattle are generally not an economic problem. Only treat when heavily infested as indicated by rubbing on fences or structures.

Seasonal trends

Louse numbers increase

 late autumn   early spring

Optimal timing of treatment if needed (heavy infestation)

 late autumn

Louse numbers increase from late autumn through to early spring and then decline with increasing temperatures in spring and summer. Heavy infestations are usually seen in cattle in poor body condition. In most cases the lice are a consequence, and not the cause, of poor nutritional conditions. Where lice are an on-going problem a single treatment in late autumn will usually provide effective control.

Worms

Highest WECs

 Autumn

Significant worms

 Small brown stomach worm (Ostertagia ostertagi)

 Barber’s pole worm (Haemonchus placei)

 Small intestinal worms (Cooperia species)

 Liver fluke

Other worms

 Nodule worm (Oesophagostomum radiatum)

 Stomach hair worm (Trichostrongylus axei)

Calendars for worm and fluke control

KEY
Strategic worm treatment given each year
(√) Not a routine treatment. Indicators for treatment include scouring, sudden loss of condition and a condition score of 2 or less, especially if feed availability is less than 1,000kg DM/ha. Treatment will be more effective if combined with a change to ‘low-risk’ pastures, especially for young stock.
Fi Both adult and immature fluke present – select a drench that kills all fluke stages
(Fi) Adult and immature fluke present. This drench may not be needed on properties with a low fluke risk.
F Only adult fluke present. Use a drench other than triclabendazole to help slow the development of resistance.

Table 1. Calendar for worm and fluke control in spring calving herds.

Age group Mar-May Jul Sep Dec
Weaners √ Weaning (√)
Yearlings/First calvers (√) Pre-calving (√)
2nd calvers (√) Pre-calving
Adult cows Adult cows usually develop a strong immunity to roundworms so mob-scale drenching should not be required – individual cows showing reduced weight gains or signs of internal parasitism (diarrhoea, low body condition score, ill-thrift or high WEC) should be treated.
Bulls √ Pre-joining
Liver Fluke control
All weaned cattle Fi (April/May) F (Fi)

Table 2. Calendar for worm and fluke control in autumn calving herds.

Age group Mar-May Jul Sep Dec
Weaners √ Weaning (√)
Yearlings/First calvers √ Pre-calving (√)
2nd calvers (√) (√) Pre-calving
Adult cows Adult cows usually develop a strong immunity to roundworms so mob-scale drenching should not be required – individual cows showing reduced weight gains or signs of internal parasitism (diarrhoea, low body condition score, ill-thrift or high WEC) should be treated.
Bulls
Liver Fluke control
All weaned cattle (Fi) Fi F

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