Apparent ileal digestibility of fat and fatty acids in polar foxes fed diets used over the non-mating period
2006
Burlikowska, K.,University of Technology and Agriculture, Bydgoszcz (Poland). Dept. of Animal Physiology
The objective of the study was to evaluate apparent digestibility of fat and fatty acids in 'end-to-end' ileorectal anastomosed blue foxes fed diets used over the non-mating period in the nutrition of parent stock on two farms (A and B). The experimental diets on farm A (A1 and A2) were mainly composed of poultry and fish offals, while diets B (B1 and B2) contained mostly beef offals. Diets B1 and B2 demonstrated a higher content of crude fat (232.1 and 298.1 g/kg) and saturated fatty acids - SFA (120.7 and 159.6 g/kg), while diets A1 and A2 contained more monounsaturated fatty acids - MUFA (90.9 and 103.0 g/kg) and polyunsaturated fatty acids - PUFA (28.6 and 19.8 g/kg). Higher values of fat digestibility coefficients (95.63 and 96.88 percent), SFA (95.66 and 96.86 percent) and MUFA (97.35 and 98.15 percent) were found in diets B. An excessively high level of ash in diets A1 and A2 could have resulted in a lower digestibility of fat and fatty acids
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