CalfWise

Winter is coming…calves and the cold

By |2021-05-20T07:52:16+10:00May 19th, 2021|Categories: CalfWise|Tags: , , , , |

As the cold weather of winter starts to set in - it's a good time to think about how calves can be affected by cooler temperatures. All animals have what is called a “thermoneutral zone” (TNZ). As shown in the picture below, it is the temperature range where animals don't need to expend energy to maintain

Salmonella in Dairy Herds

By |2021-05-19T20:33:04+10:00May 14th, 2021|Categories: CalfWise, General Health|Tags: , , |

The Salmonella bacteria is a serious cause of disease in calves and cows. It most often presents as diarrhoea - in an individual animal or as an outbreak, with many animals falling sick. There are thousands of different strains of Salmonella: typhimurium, bovismorbificans, zanzibar, anatum, dublin and newport are the most common strains we’ve cultured

Calf colostral antibodies: how to get from none to lots!

By |2021-05-02T17:13:47+10:00May 2nd, 2021|Categories: CalfWise, General Health|Tags: , , , |

Because of the structure of the bovine placenta, calves are born without any antibodies (aka "immunoglobulins" or "IgG"). Instead a calf relies on drinking colostrum, which contains antibodies that the cow has transferred from her blood stream. Once ingested, these colostral antibodies still have to be absorbed across the calf's intestines into their blood stream.

Colostrum: liquid gold?

By |2021-01-25T16:28:04+11:00January 25th, 2021|Categories: CalfWise, Farm Services|Tags: , , , |

We don't like to say that something will be a silver bullet for preventing disease, but first-milking colostrum could be considered liquid gold! Colostrum is full of antibodies and white blood cells that help newborn calves fight disease. It’s also got more fat and protein than normal milk to give calves a nutritious first feed

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Know the enemy: Mycoplasma!

By |2020-12-15T20:54:41+11:00December 15th, 2020|Categories: CalfWise, HerdWise, MilkWise|Tags: , , , |

Mycoplasma is a bacterial infection of cows and calves. There are several strains that can cause disease but Mycoplasma bovis is the most common. We have seen more Mycoplasma in the district over the last couple of years, and it is a disease that everyone should be aware of. We see Mycoplasma disease present in

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Lungworm alert

By |2020-11-02T15:24:17+11:00November 2nd, 2020|Categories: CalfWise, Farm Services, HeiferWise, HerdWise|Tags: , , , |

We have seen a number of cases of lungworm in young heifers in the district, so thought it would be good to revisit how this nasty parasite works. Lungworm, caused by the round worm Dictyocaulus viviparus, usually occurs in heifers less than 10 months of age. In particular, those heifers with no immunity that are

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Lasalocid (Bovatec) toxicity: be aware, and prepare!

By |2020-06-29T17:32:53+10:00June 29th, 2020|Categories: CalfWise, General Health|Tags: , , |

Lasalocid (aka Bovatec) is a regular additive to cattle feed. It's used as a preventative for coccidiosis in calves. However, lasalocid toxicity has been a regular cause of disease and death over the years and so we wanted to raise awareness about the potential risk it poses. How does lasalocid work? Lasalocid is classed as

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Colostral vaccines: Scourshield vs Rotavec Corona

By |2020-02-04T15:03:52+11:00February 4th, 2020|Categories: CalfWise, General Health, HerdWise, Uncategorized|Tags: , , , |

Colostral vaccines are an important tool for managing calf scours caused by Rotavirus, Coronavirus and E. coli. These vaccines are given to cows and heifers prior to calving and the antibodies the cows produce are concentrated into their colostrum. The calf still needs to be fed this first-milking colostrum soon after birth so that the

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Coronavirus – should we be concerned about cows and calves?

By |2020-02-04T15:12:59+11:00January 31st, 2020|Categories: CalfWise, General Health|Tags: , , , , |

The start of 2020 has been pretty eventful. Apart from bushfires, hail storms, dust clouds (and the Australian Open!), our news feeds have also been full of stories about a new coronavirus infecting people. Declared a global health emergency this morning, the virus (officially called "2019-nCoV" and unofficially called "Wuhan") has infected almost 10,000 people

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Could zebra cows reduce pink eye risk?

By |2019-10-25T13:24:13+11:00October 25th, 2019|Categories: CalfWise, Farm Services, HeiferWise|Tags: , , , , , , |

Pink eye pain... Pink eye - or corneal ulceration - causes farmers and stock a lot of grief! While it usually occurs in young stock from November through to March, it's increasingly being seen over the winter months too. Pink eye is mainly caused by the bacteria Moraxella bovis and Moraxella bovoculi, both of which

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