News and insights on animal health management for working and farm animals

Tag: biosecurity

Nutritional Strategies to Boost Immunity in Transported Livestock

Nutritional Strategies to Boost Immunity in Transported Livestock

You can raise resistance to stress and illness by changing what and when animals eat in the days right before a haul. The steps below work for cattle, sheep, and goats on trips that last six hours or more.

Start Feed Changes Three Days Out

Begin adjustments early so rumen bugs have time to adapt. Skip last-minute big shifts that can drop intake.

  • Raise vitamin E to 400 to 600 IU per head daily for cattle.
  • Add 0.3 percent zinc from an organic source in the total mixed ration.
  • Keep forage quality steady and avoid sudden grain increases that cause loose manure.

Key Nutrients and Daily Targets

These four items give the clearest payoff during transport stress.

Nutrient Target per head Example for 500 kg steer
Vitamin E 500 IU Top-dress 5 g of 50 percent E premix
Zinc 30 to 40 mg/kg DM Include chelated zinc in mineral pack
Vitamin A 50,000 IU Use in the same premix
Selenium 0.3 mg/kg DM Blend with salt at 90 ppm

Load-Day Electrolyte Checklist

  1. Weigh or estimate total body weight of the group.
  2. Mix electrolyte powder at 2 g per kg body weight into 10 liters of water per animal.
  3. Offer the mix 45 minutes before loading; most cattle drink 4 to 6 liters.
  4. Skip if animals already have free-choice water and salt.

Handle Transit with Simple Additions

Once animals are on the truck, water access and small feed top-ups matter most. On trips over eight hours, stop every four to six hours and let them drink. Add a probiotic paste at the first stop for groups that look tight in the gut. One 10 g dose per head of a multi-strain product is enough for most 400 kg animals.

Recovery After Unloading

Give animals access to long-stem hay within 30 minutes of arrival. Hold off on heavy grain for the first 12 hours so they can rehydrate. Check manure consistency the next morning; if it is still firm after 24 hours, add another round of electrolytes in the water tank.

Welfare Considerations During Livestock Transport: Best Practices and Legal Updates

Welfare Considerations During Livestock Transport: Best Practices and Legal Updates

You move animals every week. The key is keeping stress low so they arrive in decent condition and you stay on the right side of inspectors.

Load and unload to cut stress

Start with the trailer. Sweep it clean, bed it properly, and check every gate latch before the first animal steps on. Load in small groups rather than a full pen at once. Pigs slip on smooth floors, so lay down rubber mats or extra straw on ramps.

  1. Sort animals by size in the pens the night before so you are not mixing strangers at the last minute.
  2. Walk the route from pen to trailer yourself to spot loose boards or sharp edges.
  3. Load the calmest animals first and the ones that have already been handled near the door last.
  4. Once everyone is on board, wait five minutes before closing the rear gate so any animal that wants to turn around can settle.

Watch conditions while moving

Most problems happen after the wheels start turning. Temperature shifts fast in a moving trailer, and animals cannot move away from drafts or direct sun. Pull over every 90 minutes on longer hauls and walk the outside to listen and smell.

  • For cattle in summer, open side vents fully but keep the top row closed on the sunny side to block direct light.
  • Feeder pigs in winter need extra bedding and a solid windbreak panel on the front; they lose heat quickly when wet.
  • If you hear repeated vocalizing after the first 30 minutes, stop and check for an animal down or one that got separated from its group.
  • Carry a simple log: time, outside temp, and any stops. It takes 30 seconds per entry and satisfies most inspectors.

Stay on top of current rules

Regulations change by state and sometimes by species. Check the federal 28-hour rule first, then the specific state requirements for your route.

Update What changed Practical step
2023 EU-aligned rules in some states Space allowances increased 8% for calves under 6 months Re-measure your trailer compartments before the next calf run
Watering interval Now listed at 12 hours max for hogs in transit in three states Carry a portable water tank and plan a stop every 10 hours instead
Driver training logs Digital records accepted if they include temperature readings Switch to a phone app that timestamps photos of the trailer

Call the destination state’s agriculture department the day before if your load crosses a new border. One phone call prevents a 4-hour hold at the scale.