O melhoramento genético tem sido essencial para avanços na suinocultura, permitindo maior produtividade e eficiência reprodutiva. Para realizar a seleção destes animais, é importante o conhecimento dos parâmetros genéticos das características de importância econômica dentro do sistema produção. Contudo, existe uma grande variabilidade estimativas reportadas literatura considerando diferentes populações suínos. Neste sentido, objetivou-se meta-análise herdabilidades as peso carcaça quente...

Canine obesity, characterized by the excessive accumulation of adipose tissue, is one most prevalent nutritional disorders encountered in veterinary practice. This comprehensive review synthesizes current knowledge on predisposing factors and methodologies for assessing body condition dogs. The discussion encompasses genetic, breed-specific, age-related, lifestyle, dietary, hormonal, owner-related influences contributing to obesity. Key methods condition, including Body Mass Index (CBMI),...

O estudo foi realizado com objetivo de avaliar os parâmetros fisiológicos poedeiras alojadas em diferentes densidades alojamento e períodos. Foram utilizadas 150 Dekalb White 20 semanas idade um galpão convencional gaiolas metálicas duas subdivisões 50x45x40 cm2 distribuídas três tratamentos: 8 aves por gaiola (562,5 cm2/ave); 10 (450 cm2/ave) 12 (375 cm2/ave), cinco repetições cada. Avaliaram-se (frequência respiratória, temperatura cloacal superficial) condições ambientais (temperatura...

The meta-analysis data were obtained from a survey of published articles over 15 years. selected to classify the factors that impact broiler production and separated by influence aspects animal (thermal environment other factors). relevant for each study systematized, grouped later tabulated inserted into database prepared in spreadsheet. variables used analyze thermal temperature (comfort, high low) performance (weight gain, feed intake, conversion). features ventilation (TER = tunnel +...

Broiler flock welfare is usually assessed through mortality, physiology, behavior, and walking ability. The possibility of assessing broiler chicken lameness using the bird ability was investigated machine learning approach for first time. Data on speed acceleration, genetic strain, sex were recorded input in a dataset. Broilers classified according to 6-point gait score (GS0 sound bird, GS5 severely lame bird). Decision trees built initially all datasets. confusion matrix each developed...

Broiler productivity is dependent on a range of variables; among them, the rearing environment significant factor for proper well-being and productivity. Behavior indicates bird’s initial response to an adverse capable providing indicator in real-time. The present study aims identify characterize sequential pattern broilers’ behavior when exposed thermoneutral conditions (TNZ) thermal stress (HS) by constant heat. research was carried out climatic chamber with 18 broilers under heat three...

Considering the importance of drinking water and its effect on broiler performance, quality was studied using six different litter materials. The presence coliform bacteria Escherichia coli investigated. following materials were used in trial: wood shavings, rice husks, chopped Napier grass (Pennisetum pupureum), 50% sugarcane bagasse (Saccharum L.) + plain L.). A number 1620 Ross® one-day-old chicks reared 54 pens measuring 4.5 m² each, equipped with a bell drinker tube feeder. Water...

The advances in the production traits of Oreochromis niloticus are due to development genetically superior broodstock animals. Understanding genetic variability fish stocks is crucial any animal breeding program. aim this study was perform a meta-analysis parameters that considers between studies for economically important Nile tilapia (Oreochromis niloticus) production. final dataset from literature review contained 226 estimates heritability and 53 correlation across 37 peer-reviewed...

Background: The global pharmaceutical industry is crucial for providing medications but faces challenges in distributing products safely, especially tropical and remote areas. Pharmaceuticals require careful transport control to maintain quality; therefore, manufacturers must adopt optimal distribution strategies ensure product quality throughout the supply chain. current research focused on creating a model assess risk levels predict categorization (low, moderate, high) associated with...

Este trabalho foi conduzido com o objetivo de avaliar efeito da temperatura e do tempo armazenamento sobre a qualidade ovos poedeiras comerciais. O delineamento utilizado inteiramente casualizado em esquema fatorial 3x3 sendo 3 temperaturas (temperatura ambiente - 26°C, geladeira 10°C câmara fria 3°C) periodos (7, 14 21 dias), 6 repeticoes, distribuidos aleatorizado que cada ovo representou uma unidade experimental. As variaveis avaliadas foram perda peso dos (%), gravidade especifica,...

Ammonia (NH3) emissions from broiler production can affect human and animal health may cause acidification eutrophication of the surrounding environment. This study aimed to estimate ammonia litter in two systems forced ventilation, tunnel ventilation (TV) dark house (DH). The experiment was carried out on eight commercial houses, age birds (day, d), pH temperature were recorded. Broilers reared built-up wood shaving using an average flock density 14 bird m–2. Temperature relative humidity...

The genetic development of the commercial broiler has led to body misconfiguration and consequent walking disabilities, mainly at slaughter age. present study aimed identify locomotion ability using image analysis automatically. A total 40 broilers that were d old (male female) placed walk on a specially built runway, their was recorded. An segmentation algorithm developed, coordinates bird’s center mass extracted from segmented images for each frame analyzed, unrest index (UI) applied. We...

The present study aimed to assess and classify energy-environmental efficiency levels reduce greenhouse gas emissions in the production, commercialization, use of biofuels certified by Brazilian National Biofuel Policy (RenovaBio). parameters level were standardized categorized according Energy-Environmental Efficiency Rating (E-EER). rating scale varied between lower (D) high + (highest A+). classification method with J48 decision tree naive Bayes algorithms was used predict models. E-EER...

The large majority of broiler houses use two types systems: dark-house system - DHP, and tunnel with curtain ATC. objective the present study was to evaluate association prevalence locomotion issues in commercial farming systems (DHP ATC). For assessing thermal environment litter quality, a completely random design adopted using factors (broiler houses, DHP ATC) 12 repetitions. To surface temperature breast, ability (gait score) randomized double factorial scheme 2 × (two typology vs. sex)...

This study aimed to identify the influence of climate pattern and rearing conditions on broiler carcass condemnations observed during processing. We evaluated registered data 2015 from federal inspection files in all slaughterhouses located state Mato Grosso do Sul, Midwestern Brazil. The percentages by airsacculitis, cellulitis, dermatosis, ascites syndrome, total condemnations, average weight at 42 days were analyzed. Data associated with housing systems season year which each flock was...

Brazilian processing plants have identified the so-calledspaghetti breast myopathy characterized by muscular dystrophy of unknown etiology. This study aimed at estimating incidence spaghetti myopathyin broilers from three commercial genetic strains (Ross, Cobb, Hubbard) reared in two different housing systems (DH, Dark house, and TS, Tunnel system), presenting controlled ventilation light availability. Breast meat samples (n=5,580) were collected macroscopically evaluated for according to a...

O presente trabalho foi realizado com o objetivo de avaliar uso diferentes tipos substratos para cama aviário e sua influência sobre ganho peso frango corte. Foram utilizados 2.332 pintos um dia, criados em convencional dividido boxes 4,5m², densidade 12 aves/m². Aos 21, 28, 35 40 dias criação foram coletadas amostras das camas, determinação dos teores matéria seca (MS), pH, volatilização amônia temperatura (°C). delineamento experimental adotado inteiramente ao acaso, utilizando-se seis...

The present study observed whether environmental enrichment (music and strobe light) influenced farm-housed broiler chickens’ behavior. trial was carried out on a commercial farm from 21 to 35 days of growth. sound stimulus consisted playing classical music track every day for an approximate length 6 min, played five times six weeks starting the birds’ first age. light stimuli came colored (red green ground-projected dots) light-emitting diode (LED) projector used after musical stimulation....

As atividades desenvolvidas no ambiente escolar, pelo Diretor de Escola, podem contribuir para que a instituição ensino alcance níveis diferenciados em termos qualidade educacional, e esse diferencial pode ser fruto do nível experiência Diretor. Dessa forma, o objetivo desse artigo foi observar quais fatores referente às dos Diretores Escola puderam desempenho alunos Ensino Médio, nas avaliações larga escala SAEB ano 2017. Após coleta dados site governo, foram executadas as tarefas...

Light is important for the physiology and zootechnical development of broilers characterized by type source defined spectral emission geometry lamp, as well intensity spatial distribution illuminance. The aim this study was to verify influence an artificial lighting system based on tubular Emitting Diode (LED) lamps productive performance broilers. carried out in two broiler houses located Londrina-PR. one composed 52 LED bulbs 18 W powers, control house consisted 75 incandescent with 60...