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Evaluate the effectiveness of a sapropel preparation in calf feeding and its effects on growth and nutrient absorption.

April 5, 2026Bulletin of KSAUOpen Access

Natural Biologically Active Preparation for Feeding Calves

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Evaluate the effectiveness of a sapropel preparation in calf feeding and its effects on growth and nutrient absorption.
Conducted on Holstein calves aged four months and older.
Three groups (one control, two experimental) were formed based on matching criteria.
Calves in experimental groups received 5 or 10 ml of the sapropel preparation alongside regular feed.
5 ml of the supplement increased feed nutrient digestibility by 1.56–3.73 percentage points.
First experimental group had 8.8% higher weight gain than control (P < 0.001).
5 ml of supplement decreased costs for protein and energy per kg weight gain by approximately 8%.
Increasing the dose to 10 ml resulted in higher costs and did not improve growth outcomes.

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Assessing a natural supplement's impact on calves' growth and nutrient absorption, suggesting optimal dosage.

Lashkova et al. (2026) studied this question.

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