ABSTRACT In the present study, we examined the growth parameters of Bacillus licheniformis in solid-state fermentation (SSF) and evaluated the effects of Bacillus licheniformis-fermented products on Clostridium perfringens-challenged broilers. During four and six days of SSF, the highest viable biomass was observed at 5% glucose, 10% soybean meal, 3% yeast, and 50% initial moisture content. The Bacillus licheniformis SSF products were heat- and acid-resistant. Furthermore, the fermented products were able to inhibit the growth of Clostridium perfringens and Staphylococcus aureus […]

ABSTRACT The objective of this study was to determine prediction equations to estimate the nitrogen-corrected apparent metabolizable energy (AMEn) values of animal meals used in broiler diets through meta-analysis. A bibliographic review was undertaken with studies conducted in Brazil from 2000 to 2016 to catalogue information on AMEn values and the following chemical elements in the composition of the feedstuffs: crude protein (CP), ether extract (EE), gross energy (GE), mineral matter (MM), calcium (Ca), and phosphorus (P). Groups were also […]

ABSTRACT A total of 450 one-day-old male broiler chicks were used to evaluate the effect of the sugarcane yeast on performance, body composition, and development of the intestinal mucosa. The experiment was carried out in a completely randomized design with five treatments and six replicates of 15 birds. Sugarcane yeast was included in the experimental diets at the levels of 0, 12.5, 25.0, 37.5, and 50.0 g kg−1. Body weight, weight gain, feed intake, and feed conversion were determined. At […]

ABSTRACT We investigated the effects of dietary supplementations of yeast (YFA) or non-yeast fermented additives (NYFA) at 5.0 and 10 g kg−1 on the performance parameters and the size of digestive organs of broiler chickens. An isocaloric and isonitrogenous basal diet used as negative control was added with 5.0 or 10.0 g kg−1 of YFA or NYFA. Each of five experimental diets was given to broiler chickens kept in three randomized floor pens, each with 21 birds, from one-day old […]

The purpose of this study was to demonstrate the in vitro free radical scavenging activity and antioxidant capacity in solid-state fermented wheat bran and its potential modulation of antioxidative molecular targets in chicken peripheral blood mononuclear cells (PBMC). After solid-state fermentation of wheat bran by white rot fungi for 12 d, the scavenging action of the fermented wheat bran extracts was 1, 1-diphenyl-2-picrylhydrazyl (DPPH), and the free radicals increased significantly, approximately 1.5-fold. Trolox equivalent antioxidant capacity of 1 mg/mL fermented […]

With this study we aimed to evaluate and compare physicochemical and microbiological characteristics of frozen and chilled chicken meat. Only the prime cuts (breast, thighs, and drumsticks) were considered for the analysis of chemical composition, pH, color, water-holding capacity (WHC), thawing-cooking loss (TCL), and shear force (SF). For microbiological analysis, mesophilic bacteria, thermotolerant coliforms, and Salmonella spp. were considered. The frozen and chilled chicken meat showed no PSE (pale, soft, and exudative) or DFD (dark, firm, and dry) type of […]

Five hundred and four 1-day-old Cobb broiler chickens were randomly allotted to 18 treatments and fed a semi-purified basal diet (4 g/kg total phosphorus) supplemented with 2 levels of supplemental P (0.5 or 1 g/kg) during 21 days to evaluate performance and bone mineralization; to assess the relative bioavailability of P (RBP) in wheat meal (WM) and roasted (RS) or extruded soybean meal (ES), with or without phytase (0 or 750 ftu/kg diet), using dicalcium phosphate (DC) as standard; and […]

Avaliou-se o efeito do tempo de espera pré-abate no bem-estar e na mortalidade de frangos de corte transportados em diferentes distâncias granjas-abatedouro. Foram avaliados 215 caminhões de transporte de um abatedouro comercial, entre os anos de 2006 e 2007. Os dados foram obtidos no galpão de espera, climatizado por meio de ventiladores e nebulizadores, nos períodos manhã, tarde e noite. As variáveis térmicas (temperatura e umidade relativa), distância, tempo de espera e densidade de aves por caixa foram consideradas na […]

Para manter a posição de maior exportador de carne de frango, o Brasil deve se adequar às exigências internacionais dos padrões de qualidade, procurando sempre recursos alternativos de melhoria, sem grande incremento no custo de produção, incluindo a qualidade da cama, requisitos de bem-estar animal e as questões ambientais, como o uso e a reutilização das camas de frango. Para isso são necessárias pesquisas nas áreas de bem-estar animal, ambiência, comportamento animal e uso de tecnologias de climatização modernas que […]

Objetivou-se verificar o efeito da presença de árvores e de sua altura em sistema silvipastoril sobre o comportamento ingestivo de novilhas aneloradas no verão. Utilizaram-se dez novilhas por sistema: sistema sem sombra e sistema silvipastoril com árvores de 8 m ou de 18 m de altura. Os dados foram coletados em três dias, durante 12 horas, subdividos no período da manhã (7h15 às 13 h) e da tarde (13h15 às 19 h). Avaliaram-se os tempos e as frequências de pastejo, […]