ABSTRACT  ID:
   130255

Mrs.
   Liga Paura

Country:
    Latvia

e-mail:
    liga.paura@llu.lv

Abstract Title:
    Effect of peat and wood shaving bedding on the NH3 level during the broiler fattening period.

Authors:
    Liga Paura1, Irina Arhipova2, Solvita Gulbe3

    1, 2 Department of Control systems, Latvia University of Life Sciences and Technologies (LLU), Liela iela 2, Jelgava, LV-3001, Latvia
Latvian Poultry Association, Republikas laukums 2, Riga, LV-1010, Latvia



Abstract text:

    The aim of the study was to evaluate the NH3 level during broiler fattening period using wood shavings and peat bedding and mix of these materials with calx and special bedding premix. The study was organized in a commercial poultry farm, which is located in central part of Latvia. Experiment was organised in 5 treatments with 3-4 replications or broiler rearing periods per treatment from December 2021 till June 2022. Boilers were rearing in 5 pens (each pen 41 m2) using 2 beddings types’ wood-shavings and peat and using 3 combinations of bedding material mix with calx (wood+calx; peat+calx) and special bedding premix “Comfort” (peat+Comfort). Calx was applied to the wood shavings and peat bedding one day before using. ‘Comfort’ was added according to manufacturers’ recommendations. The bedding was spread manually before each rearing period approximately 5-10 cm deep and added during rearing period 3-4 times or every week. The amount of bedding material was recorded. Stoking density at the beginning of the fattening periods was around 10-12 chicks/m2 or 10.2 – 10.5 kg/m2 and was increased at the end of experimental period till 22.3 - 25 kg/m2 at d 42. The results showed that the interaction effect of bedding type and fattening period on survival/mortality rate of broiler chickens was significant (p < 0.05). The mortality rate was observed from 7 to 15%. Broiler body weight was lower at d 42 for the wood shaving treatment compared to the peat treatment. NH3 concentrations in an all treatments were in acceptable range (not higher than 20 ppm), with no significant differences between treatments. The results showed that the highest level of NH3 was during the first month of the intensity of fattening period, when the broiler growing intensity is high. Experiment is still in progress and the next step of the research is to evaluate the cost-effectiveness of different materials. Funding: This research was funded by EAFRD (European Agricultural Fund for Rural Development) Ministry of Agriculture Republic of Latvia, project No18-00-A01620-000038 “Reduction of ammonia emissions in poultry farms".



Keywords:

    broiler, bedding material, ammonia



Session Slot:

    O8-07