[Comparison of the effectiveness of Milkofix, a preservative preparation, with traditional preservative agents in the determination of somatic cell count in milk samples using a fluoro-optic-electronic method].
Milkofix (M), a health friendly preservative substance, to be used for milk sample preservation (Trzický, 1990), was compared with other preservatives. Untreated milk samples (N) were tested against samples treated with sodium azide (A; 0.0085 g NaN3 and 0.0630 g NaCl), bronopol (B; 0.0100 g bronopol and 0.090 g NaCl), potassium dichromate (C; 0.0330 g K2Cr2O7 and 0.0670 g KCl) and Milkofix (M; 0.1250 g). The doses of the preservatives A, B, C and M are per 25 ml milk. The somatic cell counts (SB) were determined on a FOSSOMATIC 90 apparatus (FOSS ELECTRIC, DENMARK). In the treated milk samples taken from individual cows the values of SB counts were significantly higher than in N samples if determined within eight hours after sampling (Tab. I): in A higher by 18.6%, B by 26.3%, C by 26.4% and M by 24.3% (P less than 0.05). The significantly higher values of SB counts were recorded in bulk milk samples treated with preservatives in comparison with N samples immediately after sampling: in A by 6.0%, in B, C and M by 12.9% (P less than 0.01; Tab. II). After one-day storage of N samples at a temperature of 4 degrees C these differences are insignificant (P greater than 0.05), thus the results of N, A, B, C and M samples obtained after one-day storage at 4 degrees C can be taken as actual and mutually comparable.(ABSTRACT TRUNCATED AT 250 WORDS)
Hanus
O
O
Výzkumný ústav pro chov skotu, Rapotín.
Gencurová
V
V
Gabriel
B
B
Zvácková
I
I
D000818:Animals; D005504:Food Analysis / Q000379:methods*; D005520:Food Preservatives; D008892:Milk / Q000166:cytology*
D005520:Food Preservatives
Srovnání úcinnosti konzervacního prípravku Milkofix s tradicními konzervacními prostredky pro úcely stanovení poctu somatických bunĕk ve vzorcích mléka fluoro-opto-elektronickou metodou.