Effects of dietary n-3 polyunsaturated fatty acids and ... - FINS

1 st WorkshopXIII International Feed Technology SymposiumThe muscles of wild game species, beef and pork contained 3.4 mg, 2.4 mg and 1.9 mgFe, respectively. Falandysz, J. et al. [9] determined higher manganese contents onaverage in meat samples of roe deer, wild boar, mallard and wild goose than in those ofdairy cattle, rabbits, male turkeys and chickens. The manganese concentrations were0.013 mg/kg -1 in game meat, 0.016 mg/kg -1 in beef and 0.02 mg/kg -1 in pork.Miranda, M. et al. [18] conducted a study in a Spanish industrial region and reportedmean values for iron in the muscle (56.0 mg/kg -1 ) and liver (96.2 mg/kg -1 ) of beef cattleas well as a mean manganese concentration in the liver of 3.11 mg/kg -1 .Table 7. Average contents of potassium (K), sodium (Na) and calcium (Ca) in themuscular tissues of beef cattle (mg/kg)Potassium (K) Sodium (Na) Calcium (Ca)x 5,712.60 464.05 729.07Sd 393.39 44.91 1,063.25Cv 6.89 9.68 145.84Iv 5,041.02 – 6,037.48 410.34 – 524.28 133.07 – 2,616.24The average muscle potassium content (Table 7) was 5,712.60 mg/kg. The measuredvalues showed uniformity across the samples (Cv = 6.89%).The potassium amount was higher than the value (400mg/100g) for beef determined byRogovski, B. [24]. The daily potassium requirements (of an adult man of average bodyweight) reported by Simić B. [25] are 2,500 mg.The average sodium content of the muscular tissue was 464.05 mg/kg (the measuredrange of 410.34 – 524.28 mg/kg), which conformed to the results of Rogovski, B. [24]who reported the 40 mg/100 g sodium content of beef. Vukićević, D. [32] determined asignificantly higher sodium content (110 mg/100g) in game (mallard and pheasant) meat.The calcium content of the tested meat samples showed high variations (from 133.07-2,616.24 mg/kg), the average being 729.07 mg/kg. The measured calcium contentsubstantially exceeded the content (10 mg/100g) in beef determined by Rogovski, B.[24].Table 8. Average contents of potassium (K), sodium (Na) and calcium (Ca) in the liver ofbeef cattle (mg/kg)Potassium (K) Sodium (Na) Calcium (Ca)x 5,597.31 547.58 534.04Sd 652.25 89.39 788.87Cv 11.65 16.32 147.72Iv 4,728.03-6,208.70 418.96-636.50 125.57-1,943.63314