https://repositorio.ufpb.br/jspui/handle/123456789/15375 2026-04-08T01:49:35Z https://repositorio.ufpb.br/jspui/handle/123456789/21058 Título: Efeitos da administração profilática pós-eclosão de ceftiofur e da suplementação com sanguinarina na microbiota cecal de pintinhos Autor(es): Lemos, Mateus Lacerda Pereira Orientador: Olaiveira, Celso José Bruno de Abstract: The prophylactic application of ceftiofur to newly hatched broiler chickens is a common practice in several hatcheries. We investigated the effects of this practice on the cecal microbiota of 14 days-old chicks. Furthermore, we also investigated the effects of the dietary supplementation of sanguinarine on the gut microbiota. DNA samples were extracted from cecal contents, amplified for thev3-v4 regions of the microbial 16S rRNA gene and sequenced in an Illumina Miseq platform. After downstream bioinformatics and statistical analyses, our results demonstrated that both treatments involving ceftiofur and sanguinarine treatments increased the proportions of the phylum Bacteroidetes, and the genus Bacteroides and Megamonas in the cecum of birds while reduced the relative abundance of the Firmicutes phylum and the Lachnospiraceae family. The functional prediction indicated an increase in metabolic pathways associated with digestibility in the microbiota of birds treated with ceftiofur. Diversity and abundance changes in the cecal bacterial community of broiler chickens triggered by ceftiofur were similar to those observed in the birds receiving sanguinarine-supplemented diet. Such findings support previous reports on the productivity benefits of sanguinarine as an alternative compound to improve gut health. Editor: Universidade Federal da Paraíba Tipo: Dissertação 2020-03-02T00:00:00Z https://repositorio.ufpb.br/jspui/handle/123456789/16837 Título: Estudo comparativo entre esfregaços de sangue total, periférico e esplênico para diagnóstico de piroplasmose em equinos da Paraíba Autor(es): Queiroz, Erika de Lourdes Gomes de Orientador: Simões, Sara Vilar Dantas Abstract: Equine piroplasmosis, also known as babesiosis, is a disease caused by the protozoa Babesia caballi and Theileria equi that affects horses, donkeys, zebras and mules transmitted mainly by ticks. The objective of the study was to compare the results obtained with the use of whole blood smears, ear tip and splenic puncture samples and to verify a better simple and precise methodology for the diagnosis of piroplasmosis in subclinical horses in of Paraíba State in Northeastern, Brazil. In the period from June to November 2019, a total of 90 horses were evaluated, with an average weight of 350 kg, aged between 2 and 25 years, from both sexes. The frequency of animals positive for smear of whole blood collected from the venipuncture of the jugular (60% Babesia caballi; 17,8% Theileria equi), in splenic blood (55,6% Babesia caballi; 11,1% Theileria equi) and in blood collected from the internal auricular vein (48,9% Babesia caballi; 11,1% Theileria equi), respectively. The results obtained by this study revealed that 65 animals were positive in at least one of the techniques and 25 were negative in all techniques. There was no significant association between infection and ticks. The three methods are easy to perform, safe and little invasive, but the blood smear from the jugular was the most effective in detecting Piroplasmosis in horses. Editor: Universidade Federal da Paraíba Tipo: Dissertação 2020-02-07T00:00:00Z