Acta Ichthyologica et Piscatoria 26(1): 83-91, doi: 10.3750/AIP1996.26.1.09
Estimation of digestibility of nutrients in feed mixtures for carp (Cyprinus carpio L.) fry when using chromium oxide as an indicator
P. SpurnýCorresponding author: P. Spurný © P. Spurný. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Citation:
Spurný P (1996) Estimation of digestibility of nutrients in feed mixtures for carp (Cyprinus carpio L.) fry when using chromium oxide as an indicator. Acta Ichthyologica et Piscatoria 26(1): 83-91. https://doi.org/10.3750/AIP1996.26.1.09 |  |
Abstract
In years 1990-1991, laboratory experiments were carried out to estimate values of coefficients of apparent digestibility in two genetic lines of carp fry: a scaly form (HoS) with initial weight of 37 g and a scattered form (HoL) with initial weight of 49 g. Experiments were carried out at the water temperature of 20°C. Two feeding mixtures were tested, viz. S1 and S2 with 19 and 34% of protein. The obtained coefficients of apparent digestibility of crude protein, crude fat, N-free extract and crude fibre ranged from 75.6 to 87.2%, from 32.2 to 67.8%, from 58.2 to 67.8% and from 0.9 to 14.3%, respectively. Better values of food conversion were found in the scaly form of carp fry (proteins, fat and carbohydrates by 5.9 and 29.4 and 8.23%, respectively).