Matusevičius, Paulius; Januškevičius, Algirdas; Zduńczyk, Zenon; Juśkiewicz, Jerzy; Jankowski, Jan; Žilinskienė, Ana
March 2005
Veterinarija ir Zootechnika;2005, Vol. 29 Issue 51, p93
Academic Journal
It was determined, that increment of crude protein content in feed enhances digestibility of crude protein, because part of endogenous nitrogen in total faecal nitrogen content decreases. Besides, composition of protein in feed with high crude protein content (leguminous crop feed) is generally less resistant to digestion. Applying diets, digestibility rate of crude protein depends more on feed ingredients than on its chemical structure. In addition, digestibility of dietary crude protein depends on animal age. Tests when digestibility was determined at different age (from weaning i.e. 28 days up to 11 weeks) showed, that crude protein digestibility in rabbits decreases after weaning and reaches a constant level at 8th - 9th week. This effect is the same for all dietary ingredients.


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