Practical tips for hygiene and calf-rearing
By paying extra attention to hygiene, it's possible to drastically reduce the likelihood of illness breaking out among young calves. This does, however, require that you work according to a strict protocol. Those who can apply the necessary discipline will make great strides in improving calf health – and therefore their overall calf-rearing success.
Birth and providing colostrum
- Be sure to provide a clean and roomy calving box that contains a thick layer of clean straw.
- Immediately after the birth, disinfect the newborn calf's umbilicus using a tincture of iodine or antibiotic spray.
- Milk the colostrum within one hour of birth, working as cleanly as possible, and always evaluate it for quality. Then immediately refrigerate and/or freeze the colostrum, or feed it to the calf within two hours. Ideally, colostrum will be pasteurised before it is frozen. Colostrum of insufficient quality should never be used.
- When transporting newborn calves, be sure to use a clean and disinfected calf taxi or a clean and disinfected barrow dedicated to this purpose. In other words: not a barrow that has previously been used to muck out the barn.
- Place the newborn calf in a clean and disinfected single-calf hutch that has been empty for a least one week following thorough cleaning and disinfection. Make sure the hutch contains a thick layer of clean straw.
- Give each calf its own (numbered) teat bucket, which will preferable stay with the hutch at all times.
- Clean and disinfect every teat bucket on a daily basis. Beware of using the same brush: this can be a vector for spreading disease. You must therefore disinfect the brush between every bucket/use.
- Wear clean boots and clean overalls that are worn only when working with the calves. Wash your hands before going to tend the calves.
- The best order in which to feed the animals and lay down fresh straw is from young to old.
- Put down fresh bedding in a timely manner so that every calf always has a dry spot to lie down.
- Make sure to prevent all contact between young calves and older calves or dairy cows, as well as the older animals’ manure and/or leftover feed.
- From day 3, calves will need access to clean drinking water and solid feed (hay and pellets/muesli). Troughs/dishes for feed and water should be inspected and cleaned every day.
- Ensure that no rain or moisture can flow or seep from one calf hutch into another.
- Avoid all contact, whether direct or indirect, between sick and healthy calves.
- When a calf hutch becomes vacant, it should be mucked out, cleaned and disinfected straight away. This includes the subsurface! Hutches should ideally be cleaned in a different location than where the calves are. This is to prevent pathogens from being spread by water droplets during spray-cleaning.
- Use smooth hutches with no nooks/crannies or porous surfaces, so that they will be easy to clean.
- Move any calves that are leaving the farm to a separate pick-up location so that the livestock dealer will definitely not need to come near the other calves.
Group housing for calves
- Place calves into small groups only after 14 days. Each group will ideally contain no more than four calves, all of the same age.
- Always feed the animals and lay down fresh straw in order from young to old. Save any group with a sick calf for last.
- Work according to the ‘all-in, all-out’ principle. Group hutches are emptied completely and are cleaned and disinfected.
- Visitors should wear work clothing and clean boots provided by the farm.
- Disbudding should be done by a vet, with painkillers, as young as possible.
- Never put a sick calf in with a (new) group or introduce a healthy calf into a group that includes a sick calf.
- Remove the sick calf from its group until it has recovered.
- Prevent feed from circulating between groups when placing calves in a group.
- Provide unlimited quantities of clean drinking water and high-quality solid feed (hay and muesli/pellets).
- Ensure that feed/water dishes and troughs are always clean and prevent any contamination from manure and/or rust.
- There should be clear work protocols in place and you should set concrete goals together with your staff.
- Ensure that everyone is familiar with these protocols and understands why they should be followed.
- Record all cases of illness, treatments, losses and results.
- Arrange for the effective transfer of information between members of staff (whiteboard/numbers for the hutches).
- Involve the staff in any changes to procedure. Let them contribute to identifying improvements. Share results and keep making an effort to motivate and train your staff. Pay them compliments for a job well done.
- Evaluate the calf-rearing process at least once a year, together with staff and your regular veterinarian.