Paulo Vitor Divino Xavier de Freitas

Universidade Estadual de Goiás | UEG · Animal production

Brazilian savanna (Cerrado) trees present high diversity, whether they are being used by fauna and traditional populations as food or medicine. However, little research has been done to evaluate the nutrient composition of different species relevant to society, which may highlight new uses of these species. The objective of this study was to charac...

This study examined the quality of silage from two cultivars of energy cane (Saccharum spontaneum) produced with different additives. The experiment was laid out in a completely randomized design with a 2×5 factorial arrangement of treatments consisting of two cultivars (VG3, VG1126) and four additives (1% urea; 1% NaOH; 1% CaO; and 1.0 × 1011 CFU...

In Brazil, Anodontites trapesialis is a mussel species that occurs spontaneously in fish breeding sites. This species feeds on the remains of cultural treatments of other aquaculture species. The objective of the work is to understand the bromatological composition of mussel A. trapesialis. Individuals were selected to compose three samples of 500...

Supplementary feeding speed up the development of bees, especially in multiplications through the division of brood combs and foragers, in which the stock of feed within the box is inexistent. The objective of this study was to evaluate the formation, development and productive parameters of microcolonies of Melipona rufiventris fed different prote...

Apesar da dimensão de área para produção de gramíneas, existem variações na sua produção e qualidade ao longo do ano (Sazonalidade), o que afeta diretamente a produção animal no Brasil. Isso faz com que os produtores busquem alternativas que amenizem esses efeitos. Uma delas é o cultivo da cana de açúcar, visto que se trata de um alimento com grand...

It´s necessary to develop new breeding practices that ensure good productivity and high product quality, without placing animal welfare at risk and promoting worker safety. In this way, the objective of this study was to evaluate the reactivity of Nelore cows, raised in an extensive system, and submitted to aversive management, rectal palpation or...

In beekeeping, the knowledge of nutrition must be improved to maximize its genetic potential to enhance productivity, especially in times of food shortages. This study aimed at studying the influence of protein supplements on the development of Melipona rufiventris bee colonies. About 15 colonies of M. rufiventris were used. They were divided into...

Depending on the temperature and relative humidity of the air the external activity of the bees can vary in different times of the year and times of the day. Thus, the objective of this study was to evaluate the behavior of external activities of the bee Melipona fasciculata in different seasons and periods of the day. Four colonies were used for t...

Meliponines are important pollinators of tropical forest species, and an interesting feature of these is the possibility of their creation rationally. The present review highlights the importance of native bees and key points that can boost breeding. Despite its importance to the ecosystem, there are factors that have contributed to the reduction o...

This study aimed to evaluating the fermentation characteristics of millet silage, cultivar ADR500, under the inclusion of different levels of dehydrated corn grain, cob and straw (CGCS): 0, 5, 10 and 15%, ensiled after 78 days of vegetative growth. The experimental design was completely randomized with 4 treatments and 4 replications, totaling 16 e...

The objective of this study was to evaluate the production of green mass (GM), dry mass (DM), nitrogen contained (NC), bromatological composition, apparent nitrogen conversion efficiency (NCE), and apparent nitrogen recovery (ANR) of millet cultivars (ADR-500, ADR 7020 and LABH 70732) that received different doses of nitrogen (N) (0, 50, 100, 200 k...

Objetivou-se avaliar o efeito do sistema de criação de poedeiras comerciais sobre o desempenho, qualidade dos ovos e temperatura retal das aves. Foram utilizadas 100 poedeiras da linhagem Hy-Line W-36 e 100 poedeiras Hy-Line Brown com 30 semanas de idade distribuídas em delineamento inteiramente casualizado em esquema fatorial 2 x 2, com cinco repe...

Objetivou-se avaliar a composição bromatológica da silagem de milheto forrageiro sob a inclusão de diferentes níveis de milho desintegrado com palha e sabugo (MDPS). A silagem de milheto cultivar ADR500 recebeu diferentes quantidades de MDPS (0; 5; 10 e 15%). O delineamento foi inteiramente casualizado com 4 tratamentos e 4 repetições, totalizando...

Two experiments were performed to evaluate the hematological and blood biochemistry parameters, biometry of digestive organs, enzyme activities, protein content and absolute weight of the pancreas of broilers fed pre-starter and pre-starter diets supplemented or not with amylase from Aspergillus awamori. In total, 120 male Cobb chicks were housed i...

Avaliou-se os efeitos da adição do complexo enzimático produzido por Aspergillus awamori em dietas de um a 21 e o efeito residual de 21 a 49 dias sobre o desempenho de frangos caipira melhorado. Em cada experimento foram alojados 120 pintainhas, machos, da linhagem Label Rouge, distribuídos em delineamento inteiramente casualizado, com dois tratame...

RESUMO-A castração é um procedimento cirúrgico historicamente realizado na suinocultura com intuito de prevenir o odor e sabor desagradáveis presentes na carcaça de machos íntegros. Atualmente essa prática tem sido alvo de debates e críticas em virtude de seus resultados negativos sobre o bem-estar, a integridade e a saúde dos leitões. Uma possível...

Os sistemas silvipastoris é uma modalidade dos sistemas agroflorestais, onde a produção animal, forrageira e árborea encontra-se em consórcio na mesma área, no mesmo tempo. A maior parte da produção da pecuária bovina no Brasil baseia-se na utilização de pastagens. No Brasil, há mais de 100 milhões de hectares com pastagens cultivadas, cerca de 80%...

É notório que a pecuária no Brasil é extremamente dependente da produção de pastagens. Entretanto em sua maioria estas estão ou encontram-se em algum estágio de degradação, em consequência da adoção de práticas de manejo inadequadas. Um dos desafios atuais é fazer com que técnicas de manejo que consideram as respostas fisiológicas de crescimento da...

São inúmeros os nutrientes limitantes na produção de pastagens, destacando-se entre eles o nitrogênio, essencial na síntese de proteínas e pigmentos dos tecidos vegetais. A adubação nitrogenada é fundamental no estabelecimento das plantas forrageiras, sendo um dos pontos que mais onera a produção, assim sendo, fica clara a necessidade de empregar t...

The occurrence of natural enemies is important as it can cause serious harm to bees and even the death of the colony. Little is known about the relationship between beetles and bees without stings. So this work is the first record of Hololepta (Leionota) reichii Marseul (Coleoptera, Histeridae) in colony of Melipona quadrifasciata Lepeletier, 1836...

ABSTRACT The aim of this study was to verify the effect of the addition of an enzyme complex on performance (feed intake, egg production, egg weight and egg mass, feed conversion per egg mass, and feed conversion per dozen eggs), and on egg quality (% of shell, albumen and yolk, shell thickness, specific gravity, Haugh unit, yolk index, and albumen...

The objective was to determine the nutritional requirement of digestible threonine and the threonine: lysine ratios for light laying hens from 29 to 45 weeks of age. Two hundred Hy-Line-36® hens were distributed in a completely randomized design with five replicates and 10 birds per experimental unit and four treatments (5.50, 5.77, 6.05 and 6.30 g...

The biodiversity of bees in the world is very large. They are known about 20,000 species. Bees are the main pollinators and are crucial for many crops, and contribute to the conservation of plant biodiversity. Many plants of economic importance rely on these pollinating insects, which contribute to increased production of fruits and seeds. The beek...

RESUMO O objetivo deste trabalho foi avaliar diferentes dispositivos para alimentação artifi cial da abelha Melipona rufi ventris. Foram utilizadas 20 colônias, divididas em quatro tratamentos, de acordo com o alimentador utili-zado; estes foram: tratamento A (alimentador de vidro), tratamento B (alimentador de Eiratama), tratamento C (alimentador...

The objective of this study was to evaluate the eggs quality of laying hens receiving diets with inclusion of a multienzyme complex. The research was conducted in the IF Goiano- Campus Ceres, using 240 laying hens from 28 to 40 weeks of age, in a randomized block design with four treatments and 10 repetitions with six birds each. The treatments con...