Optimum calf rearing

Rearing a calf optimally provides job satisfaction and it gives the best possible start in its development to become a healthy and strong dairy cow. Many calves face digestive or respiratory challenges. This is not only an extra cost item, it means frustration in work and loss of production as a dairy cow.

The immune system

Because there is no intrauterine transfer of maternal immunity across the placenta, calves are born with extremely low blood concentrations of antibodies (Immunoglobulins – Ig), and during the first weeks of life, a calf can hardly produce its own antibodies and other defensive immune cells. Therefore, calves are entirely dependent on the immunity provided mainly by the antibodies present in the colostrum. “The absorption of antibodies by the calf is called passive immunity. The innate active immunity (own defence) of calves only begins at the age of 3 to 7 weeks,” says Vetvice (2006).

At the age of about 2 months, weaning also poses a challenge to the immune system. Conditions where stress can be expected influence the immune system even more, and respiratory challenges then lie in wait. Stress can be expected due to moving, dehorning and poor quality feed should be avoided during these immune challenges. Other things that can play a negative role are hygiene due to insufficient vacancy in the single pens and non-optimal colostrum quality and/or colostrum dosage.

Bridging the immunity gap

Both immune challenges not only cause calves to be challenged earlier, but they also cost growth. Growth that is difficult to catch up with. Immediately after birth, colostrum must be provided; the calf’s intestine is permeable to the antibodies contained in the colostrum for a limited time. The rule for colostrum is: 10% of calves’ body weight, quickly and often. From day 0, it is important to support the calf with AHV Calf Start through the (colostrum) milk. This will promote better growth and digestion, allowing the calf to better bridge the immunity gap.

When calves are weaned, it is important that they already consume sufficient concentrate. Despite sufficient intake, weaning can still be a stressful situation. Weaning often goes hand in hand with moving to a different pen, which also causes additional stressful conditions. When potentially stressful situations are limited as much as possible, the feed intake and energy balance improve. An optimum energy balance also ensures that the immune system functions properly. AHV Booster Powder provides an energy boost and optimizes the health of the calf during weaning.

Housing and draughts

Like people, animals are sensitive to draughts. In stables, the climate may seem good, but the signals are sometimes subtle. It’s common to often see livestock farmers put calves behind a bundle of straw so they stay out of the draft. You don’t notice the draught at first, but it’s there, because the calves are always looking for a sheltered spot.

Despite good care and housing, calves can still encounter respiratory challenges. AHV Respi and AHV Aspi are products for healthy airways that regulate the body’s response and brings relieve and comfort. In case of extreme challenges, it is wise to give the calf the AHV Calf Bolus. This has a soothing effect on the airways, promotes good intestinal flora and stimulates intestinal function.

Building up natural resistance

The AHV Calf Rearing Protocol supports young stock in all facets of optimal rearing and building up their natural resistance. This results in optimally productive cows, a longer life span, cost savings due to such factors as a higher milk production yield and fewer financial losses, improved welfare for young livestock and greater ease and pleasure of working for the dairy or veal farmer. Read more about optimal calf rearing here.

Would you like to know more about this topic and how AHV can support you and your herd? Please fill in the form below or contact your local farm advisor directly.