Vrzalová
D., Zelenka J. (2001):
The effect of age of pre-ruminant calves on starch
digestibility. CZECH J. ANIM. SCI., 46, 2001 (7):
310-312. ABSTRACT: Apparent starch digestibility (ASD) was studied in an experiment with five male calves of Czech Red Pied breed at the age of 9 to 91 days. Animals were fed on a milk replacer containing 5% of wheat starch. Digestibility was determined in 23 three-day balance periods using the chromic oxide indicator method. The average estimated value of ASD was 0.934 ± 0.00536. Starch digestibility changed highly significantly (P< 0.01) with the age of calves. The dependence of determined values (Y) on age in days (X) was expressed by the 2nd degree parabola equation with a maximum on Day 54. The most marked increase was observed in the first weeks of the experiment, from Day 9 to Day 28, by 0.0064 per day (P< 0.05). It is of interest that even in very young animals starch was more digestible than it was expected. Keywords: calves; effect of age; starch digestibility ABSTRAKT: Klíčová slova: telata; vliv věku; stravitelnost škrobu
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