OPPORTUNITIES TO IMPROVE THE CHARACTERISTICS OF MANURE LITTER IN POULTRY FARMS: 2. APPLICATION OF BACTERIAL-ENZYMATIC ADDITIVE IN TURKEYS
V. Vasilev
Резюме: The aim of this study was to establish the values of pH, moisture, nitrogen (NH4
+ -N; NO3 - N; and total N) and total carbon in the turkey’s manure litter (TML), treated by bacterial-enzymatic product Micropan® Normal (Eurovix, Italy). The study has been carried out at the poultry farm of the Agricultural institute – Stara Zagora for a period of 61 days, when the last sample was taken. The treatment was done at the days 1, 15, 29, 40 and 54 of the experiment. The composite samples for the purposes of laboratory analysis were taken at days 8, 12, 19, 26, 33, 40, 50, 54 and 61 of the experiment. It was established that there were no significant differences between the experimental samples (ES) and control samples (CS) average values of the pH (7.02 ± 0.62 and 6.65 ± 0.89, respectively). The moisture of the ES decreased by 4.6% in comparison with CS, at low level of significance (P < 0.05). The NH4 + -N concentrations and the NH4 + -N:total N ratio in the treated TML decreased by 21.2% (P < 0.01) and 22.7% (P < 0.01), respectively, whereas the treatment had no significant effect on the NO3 - N concentrations. There were no significant effect of treatment on the percentages of the total N and total C as the increase in treated TML was by 2.58% and 2.84%, respectively. After day 33 there were significant increase in the percentages of total N and total C in treated TML. The C:N ratio was 6.24 ± 0.81 and 6.15 ± 0.55 for ES and CS, respectively, with no significant differences.
+ -N; NO3 - N; and total N) and total carbon in the turkey’s manure litter (TML), treated by bacterial-enzymatic product Micropan® Normal (Eurovix, Italy). The study has been carried out at the poultry farm of the Agricultural institute – Stara Zagora for a period of 61 days, when the last sample was taken. The treatment was done at the days 1, 15, 29, 40 and 54 of the experiment. The composite samples for the purposes of laboratory analysis were taken at days 8, 12, 19, 26, 33, 40, 50, 54 and 61 of the experiment. It was established that there were no significant differences between the experimental samples (ES) and control samples (CS) average values of the pH (7.02 ± 0.62 and 6.65 ± 0.89, respectively). The moisture of the ES decreased by 4.6% in comparison with CS, at low level of significance (P < 0.05). The NH4 + -N concentrations and the NH4 + -N:total N ratio in the treated TML decreased by 21.2% (P < 0.01) and 22.7% (P < 0.01), respectively, whereas the treatment had no significant effect on the NO3 - N concentrations. There were no significant effect of treatment on the percentages of the total N and total C as the increase in treated TML was by 2.58% and 2.84%, respectively. After day 33 there were significant increase in the percentages of total N and total C in treated TML. The C:N ratio was 6.24 ± 0.81 and 6.15 ± 0.55 for ES and CS, respectively, with no significant differences.
Ключови думи: bacterial-enzymatic additive; manure litter; treatment; turkeys
Дата на публикуване: 2017-12-20
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