Calf Rearing with MBS
It’s that time of the year when most cows are ready to calve. Producers will be planning to rear calves for heifer replacement and for sale and need to maximise the benefits from milk feeding.
Bacillus subtilis (Natto) produces a milk-clotting enzyme that may benefit calves by clotting the milk after being fed milk and/or milk powder supplements.
Milk clotting is vital to the calf as the clotting slows down the passage of milk through the gastrointestinal tract allowing protein, lactose and other components of the milk to be absorbed. One consequence of milk not clotting is milk scours where the milk passes through too quickly.
B. subtilis (Natto) has also been shown to have activity against rotavirus and is included as part of a rotavirus vaccine. Another protein isolated from B. subtilis by Ukrainian researchers shows antiviral activity against the influenza virus.
B. subtilis (Natto) has been shown to produce antimicrobials and antifungals that inhibit microbes that cause scours in calves such as: E. coli, Salmonella, Campylobacter, Clostridium perfringens, fungi and protozoans. Anecdotally, I have found that calves given 5 ml per day for the first 20 days and then increased to 10 ml for the remainder of a 6 to 7 week calf raising period is extremely beneficial with more muscling over the loins being seen. For a sick calf 40 ml as a one off dose has been seen to be beneficial.
Dynavyte MicroBiome Support contains Bacillus subtilis (Natto) at a minimum of 1 x 10⁸/litre.