Banca de DEFESA: GIOVANA AGUIAR BATTISTI KROTH

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : GIOVANA AGUIAR BATTISTI KROTH
DATE: 10/02/2021
TIME: 19:00
LOCAL: Web Conferência - Google Meet (https://meet.google.com/gzf-gssz-ctc).
TITLE:

Influence of Inoculation and Crushing on Composting of Different Biomasses of Laying Poultry Carcasses.

KEY WORDS:

Composting, laying hen, inoculant, crushed, agriculture waste.

PAGES: 45
BIG AREA: Ciências Agrárias
AREA: Medicina Veterinária
SUMMARY:

Even though composting is an extensively studied technique, several factors continue to hinder its efficiency and applicability. In addition, there are not many studies with carcasses of laying hens, in full scale, using inoculation and crushing as part of the treatments. Thus, the objectives of this work were: To evaluate, in physical-chemical and microbiological terms, the efficiency of different composting conditions regarding the degradation and stabilization of different biomasses of carcasses of laying hens, considering specific inoculation and mechanical crushing that facilitate the process. 600 hens were used, 40 in each treatment containing whole hens (treatments 1 and 2, without and with bacterial inoculation, respectively) and 60 in treatments with crushed hens (treatments 3 and 4, with and without bacterial inoculation, respectively). Each treatment contained 115 kg of wet wood shavings (55%), and approximately 75 kg (T1 and T2) and 110 kg (T3 and T4) of carcasses. The cells (masonry, 1 m3), were placed in a screen-protected and covered environment. Temperature, humidity, pH and microbiological activity (hydrolysis of fluorescein diacetate - FDA) were measured weekly. Monthly, other parameters were evaluated, such as Coliforms Escherichia coli, Total Coliforms, Clostridium perfrigens and Salmonella spp., Ash content and some nutrients. It was identified that treatments T3 and T4 presented a higher decomposition rate than T1 and T2, considering the behavior of windrow temperatures. All treatments cool about 0.5 ° C / day, according to the temperature linearization data in the thermophilic phase of the treatments. In the same period, T3 and T4 remained 5 ° C above T1 and T2, respectively. T3 reached maturity before the other treatments, followed by T4 and T2, according to temperature and C / N ratio results. The shaving proved to be convenient for the composting of animal carcasses, but the process of aeration of the cells needs to be revised, limiting the success of the treatment. At the end, the compounds were analyzed based on some parameters of Normative Instruction (IN) No. 27/2006, as amended by IN 7/2016 (ANNEX V) and IN 25/2006 of the Ministry of Agriculture, Cattle and Supplying, and the recolonization of microorganisms after the thermophilic phase makes it impossible to comply with current legislation related to the registration of fertilizers.

BANKING MEMBERS:
Presidente - 1836822 - CLEDER ALEXANDRE SOMENSI
Externo à Instituição - CLAUDEMIR MARCOS RADETSKI
Externo à Instituição - EVERTON LUIS KRABBE