Redução da excreção de amônia na cama de frangos de corte suplementados com composto probiótico na dieta

Detalhes bibliográficos
Ano de defesa: 2022
Autor(a) principal: Hanna Luiza Freitas Emerick
Orientador(a): Não Informado pela instituição
Banca de defesa: Não Informado pela instituição
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Universidade Federal de Minas Gerais
Brasil
VET - DEPARTAMENTO DE ZOOTECNIA
Programa de Pós-Graduação em Zootecnia
UFMG
Programa de Pós-Graduação: Não Informado pela instituição
Departamento: Não Informado pela instituição
País: Não Informado pela instituição
Palavras-chave em Português:
Link de acesso: http://hdl.handle.net/1843/60845
https://orcid.org/0000-0001-9922-4626
Resumo: The objective was to evaluate the effects of using commercial probiotic compounds on performance, immunological and hematological parameters, stress, and ammonia levels in poultry litter. The study used 450 one-day-old chicks of the Ross® strain, housed in boxes for 35 days, in an entirely randomized design with three treatments and five replicates of 30 birds each. The treatments were: treatment 1 - control group (C) without performance-enhancing additive and without probiotic; treatment 2 - supplementation of antibiotic (A) performance-enhancing additive via feed, and treatment 3 - supplementation of probiotic compound (P) via feed and water. There was an effect of the treatments for ammonia concentration in the litter: the litter of birds that received the probiotic presented a significant reduction in ammonia levels (P<0.05). There was no effect of the treatments on the performance parameters evaluated, with the exception of feed consumption and average weight at 14 days. At 14 days, group P had a higher average feed intake than group A (P<0.05), but did not differ from group C (P>0.05). Birds that received the feed without additives (C) had higher average weight at 14 days compared to birds in the other treatments (P<0.05). For the parameters of carcass yield, hematological, and concentration of glucocorticoids in excreta there was no effect of treatments (P>0.05). It can be concluded that the probiotic studied presents the potential for reducing the amount of ammonia in poultry litter.