BioStart® Calf

A premium digestive enhancer containing prebiotic extract and rennet for milk fed calves.

Available from Leading Rural Stockists

Active Constituents
  • Rennet
  • Nonviable fermentation extracts (Lactobacillus acidophilus, Bifidobacterium animalis, Streptococcus thermophilus, Lactobacilluscasei, Enterococcus faecium, Propionibacterium freudenreichii)
  • Prebiotic oligosaccharides
  • Plant extracts
  • Biotin
  • Cobalt Sulphate
  • Manganese Sulphate
  • Potassium Sulphate
  • Zinc Sulphate
  • Ascorbic Acid
  • Folic Acid
  • Vitamin A
  • Vitamin D
  • Vitamin E

A prebiotic, digestive enhancer that has been specifically developed and formulated for calves. Aids the establishment and activity of beneficial microbes in the digestive tract, promoting rumen development. Enhances the digestion of milk, milk replacer and supplementary feed.

Directions for Use



NEWBORN CALVES 5mL added to first colostrum feeds
MILK FED CALVES 2mL head/day
UNTHRIFTY CALVES 5mL head/day as a supportive measure




Day 1 Add 5mL/head of BioStart Calf to first colostrum feeds to ensure colostrum curd, improve colostrum digestion and release antibodies for passive immunity transfer
Day 2 – Weaning Add FortiMILK GOLD, SILVER or SOLUPLEX to whole milk or calf milk replacer to improve cocci control and growth rates with Bovatec and cover vitamin and mineral requirements.
Alternatively, for a non-medicated program, feed FortiMILK GREEN from Day 2 – Weaning.


NOTE: As a supportive measure during times of disease, stress, ill-thrift and gastric upset add FortiMILK GREEN to all electrolyte feeds and/or add to milk feeds for the first 2-3 weeks of life.



Specific feeding guidelines for dairy and beef calves can be obtained by contacting ProviCo directly on 1300 380 343 or calling our calf rearing specialist on 0409 860 019.

Withholding Periods


MEAT: Zero (0) days

MILK: Zero (0) days



Zero (0) days



Store in a shaded place until ready to use. DO NOT FREEZE. Keep containers closed and free of debris when not in use.

Pack Sizes

104100  2L Bottle




BioStart Calf prebiotic is a concentrated blend of rennet and prebiotic ingredients including the enzymes and extracts from the fermentation of probiotic lactic acid bacteria. BioStart Calf aids in the full utilisation of liquid feeds, early rumen development as well as promoting the establishment of beneficial probiotic microbes in the calf’s digestive system.



Best practices for improving colostrum quality include: vaccinations and transition lead feeding in pre-calving cows, clean collection and storage of first colostrum, colostrum testing, adequate intake to
newborn calves within 12 hours of birth.

BioStart Calf is a practical and cost-effective nutritional tool which ensures calves get the most out of best
colostrum management and practices. Adding BioStart Calf to first colostrum feeds ensures a firm curd,
improved colostrum digestion and the release of antibodies for passive immunity transfer.



Australian research (Gregory 2003) demonstrated that the level of rennet activity that causes the milk to clot
(curd) in the newborn calf is highly variable. Weak curd formulation is frequently seen in young calves and
can be the corrected by the addition of rennet to milk.

BioStart Calf rennet enzyme additive turns colostrum or milk into a firm curd in the abomasum – the critical
phase of casein digestion. This slows the milk’s passage through the digestive track which aids digestion of
all milk nutrients.



  • Application – easy to administer; convenient liquid formulation.
  • Performance – aids in the utilization of liquid feeds and early rumen development.
  • Price – exceptional value versus commercial colostrum supplements.

Got a Question?

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call (03) 93943806