AGRO-ECOLOGICAL ASSESSMENT OF TURKEYS MANURE AND LITTER

G. Kostadinova, D. Dermendzhieva, G. Petkov, R. Stefanova

Abstract: The aim of this paper was to study and assess fresh manure, litter and stored manure (mix of manure and litter) of from turkeys, reared in a building with capacity of 300 turkeys on deep litter-loose housing for a period of 10 months. Samples of all substrates were analyzed monthly on the base of total N, total P and total K content, as well as total number of microorganisms and coli-titer. It was found that: a) the content of nutrients (N, P, K) and microorganisms in fresh manure, litter and stored manure varies as follow: total N: 0.70% - 1.94% (29.9-91.3 g/kg Dry Matter - DM), 1.29 - 2.81% (19.0 - 66.9 g/kg DM) and 0.88 - 1.40% (24.2 - 39.3 g/kg DM); total P: 0.26 - 0.68% (11.0 - 28.7 g/kg DM), 0.68 - 1.19% (10.1 - 23.6 g/kg DM) and 0.87 - 1.86% (27.4 - 48.8 g/kg DM); total K: 0.27 - 0.79% (11.4 - 43.1 g/kg DM), 0.53 - 1.02% (7.89 - 21.8 g/kg DM) and 0.10 - 0.52% (3.38 - 14.1 g/kg DM); total number of microorganisms (TNMs): 2000.103 - 115 000 103 CFU/g, 818.103 - 900.103 40 CFU/g and 500.103 - 7 142.103 CFU/g; Coli-titer: 0:01 - 0.0000001, 0.01 - 0.00003 and 0.01 – 0.00001; b) the content of total N, total K and TNMs decreased similarly in the chain “fresh manure - litter – stored manure” as follow: total N - an average of 25.5% in the litter and on average 51.0% in stored manure compared that in fresh manure; total K - with 31.7% and with 54.1%, respectively; TNMs - with 64.0% and with 93.3%; Coli-titer was higher of litter (5 times) and of stored manure (3 times) compared to that of the fresh manure; c) the quantity of total P decreased with 19.4% in litter compared to that in fresh manure, but increased with 38.8% in stored manure compared to that in fresh manure, and with 50% compared it to the litter.

Keywords: assessment; coli-titer; litter; manure; microorganisms; N, P, K; turkeys

Date published: 2017-03-20