Avaliação de protozoários em tilápias (Oreochromis niloticus) e possíveis riscos em saúde pública

Pós-graduação em Medicina Veterinária - FMVZ

Investigação da toxicidade e da capacidade de recuperação do herbicida 2,4-D comercial (2,4-diclorofenoxiacético) empregando brânquias de tilápias, Oreochromis niloticus, como biomarcador

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Estresse de dominância e respostas metabólicas da tilápia-do-Nilo

Pós-graduação em Zootecnia - FMVZ

Desempenho zootécnico da tilápia tailandesa, linhagem Chitralada, em tanques-rede no Reservatório de Nova Avanhandava, B uritama, SP: modelo empírico de classificação e repicagem

Pós-graduação em Aquicultura - FCAV

Qualidade higiênico-sanitária e ocorrência de Aeromonas sp. e Escherichia coli em tilápias comercializadas no varejo

Pós-graduação em Aquicultura - FCAV

Avaliação de oponentes en confrontos de tilápia-do-Nilo: interação entre sinais químicos e visuais

Pós-graduação em Aquicultura - FCAV

Substratos artificiais melhoram a qualidade da água em sistema de cultivo multitróficos e multiespaciais?

Pós-graduação em Aquicultura - FCAV

Determinação da relação dos aminoácidos essenciais para juvenis de tilápia-do-Nilo, pelo método da deleção

Pós-graduação em Aquicultura - FCAV

Produção de tilápias-do-Nilo em sistemas sem renovação de água com Wetlands para tratamento de efluentes

Pós-graduação em Aquicultura - FCAV

Efeito da diversidade de habitats sobre o desenvolvimento populacional do camarão-da-amazônia

Pós-graduação em Aquicultura - FCAV

Desenvolvimento, avaliação físico-química e biológica de hidrolisado proteico de resíduos agroindustriais para surubim

Pós-graduação em Aquicultura - FCAV

Composição bromatológica e digestibilidade aparente da parte aérea seca da mandioca na alimentação de tilápias-do-nilo

The objective of this work was to evaluate the effect of sun and shade drying of the aerial part of cassava on the chemical composition and apparent digestibility coefficient (ADC) of nutrients, energy, and aminoacids for Nile tilapia (Oreochromis niloticus). There was no difference between the drying methods for chemical composition. The ADC of crude protein showed higher digestibility for the shade dried aerial part. Shade drying of the aerial part of cassava allows higher conservation of the protein content and better apparent digestibility of the protein and amino acid fraction for Nile tilapia.

Desempenho da tilápia-do-Nilo arraçoada com dietas contendo farinha de sangue bovino atomizado ou convencional

The study evaluated the performance and carcass composition index of Nile tilapia (Oreochromis niloticus) fed with diets containing increasing levels of spray-dried blood meal (SDBM) and vat-dried blood meal (VDBM) and formulated based on digestible amino acids. Two hundred and fifty-two fingerlings were distributed in a completely randomized design, in a (2 x 4) + 1 factorial model, two types of blood meal with four levels of each blood meal in the diet, and a control diet (without blood meal), with four replications. The treatments consisted of soybean meal-based control diet, with 34% digestible protein (DP) and 3,200 kcal of digestible energy kg-1 (DE), plus four diets formulated with SDBM and four diets with VDBM, containing 5, 10, 15 and 20% of each meal in feed, maintaining identical DP, DE, phosphorus, calcium, lysine, methionine, threonine and tryptophan levels as those of the control diet. The results show that it is possible to use up to 15% VDBM in diets of Nile tilapia (O. niloticus) between 5 to 150 g of body weight.

Desempenho e hematologia de tilápias-do-nilo alimentadas com Saccharomyces cerevisiae e vacinadas contra Streptococcus agalactiae

The objective of this work was to evaluate the inter-relationship between dietary supplementation with Saccharomyces cerevisiae cell wall and vaccination against Streptococcus agalactiae, and its effect on the productive performance and hematological variables of Nile tilapia (Oreochromis niloticus). Eighty-four Nile tilapia were distributed in 12 fiber boxes (n=7), in a 2x2x3 factorial arrangement, corresponding to two levels of supplementation with yeast cell wall, two types of inoculation, and three evaluation times. Fish were fed during 77 days. Vaccination of fish was done 60 days after feeding started. Fifteen days after vaccination, all fish were subjected to challenge with live strain of S. agalactiae, and 6, 24, and 48 hours after the challenge, blood was collected from the caudal vein for evaluations. Fish fed with supplemented diets show greater weight gain and specific growth rate, and the interaction between the diet and vaccination effects results in higher hematocrit, hemoglobin, and leukocyte rates.

Histologia hepática e produção em tanques-rede de tilápia-do-nilo masculinizada hormonalmente ou não masculinizada

The aim of this work was to evaluate the performance and the liver structure health of Nile tilapia hormonally masculinized or nonmasculinized, reared in cages with two protein levels. Two groups of Nile tilapia of Thai lineage (total 2,400), with 127 g initial average weight, were distributed in a completely randomized design with four treatments, in a 2x2 factorial arrangement, corresponding to the groups of hormonally masculinized or nonmasculinized fish, and to diet protein level of 28 or 32% of crude protein, with three replicates. After 115 days feeding, there was no interaction between the factors for final weight, weight gain, feed conversion rate, final length and survival. There was no difference between hormonally masculinized and nonmasculinized fish for final weight, weight gain, and survival, which shows the possibility of their production in cages, without the need of hormonal masculinization. Crude protein at 32% in the diet enables a better performance for both groups. Histological changes in the liver - such as increased cell volume, disruption of the cord-like arrangements, and increase of vesicles in the hepatocytes - are found in hormonally masculinized fish, and are more pronounced in fish fed 32% crude protein in the diet.