Nutraceutical effects of organic Selenium and vitamin E supplementation on performance, antioxidant protection and egg quality of Japanese quails (Coturnix japonica)

This study evaluated the nutraceutical effects of organic Selenium and vitamin E supplementation on performance, egg quality and antioxidant protection of Japanese quails. Forty-two posture cages with six birds each were randomly set in seven treatments. Each treatment consisted of the addition of 200 IU of vitamin E/kg of feed and increasing levels of organic Selenium. Significant differences were found in α-Tocopherol deposition, enzymatic activity of glutathione peroxidase (GSH-Px) and oxidative bioindicator malondialdehyde (MDA) in egg yolk with vitamin E supplementation. We concluded that supplementing 200mg of vitamin E and 0.30 ppm organic Selenium did not affect bird performance, but improved egg quality and shelf life. Highlights: This study evaluated the nutraceutical effects of organic selenium and vitamin E supplementation on egg quality of Japanese quails. Forty-two posture cages with six birds each were randomly set in seven treatments. Each treatment consisted of the addition of 200 IU of vitamin E/kg of feed and increasing levels of organic selenium. Supplementing 200mg of vitamin E and 0.30 ppm organic selenium did not affect bird performance, but improved egg quality and shelf life.This study evaluated the nutraceutical effects of organic Selenium and vitamin E supplementation on performance, egg quality and antioxidant protection of Japanese quails. Forty-two posture cages with six birds each were randomly set in seven treatments. Each treatment consisted of the addition of 200 IU of vitamin E/kg of feed and increasing levels of organic Selenium. Significant differences were found in α-Tocopherol deposition, enzymatic activity of glutathione peroxidase (GSH-Px) and oxidative bioindicator malondialdehyde (MDA) in egg yolk with vitamin E supplementation. We concluded that supplementing 200mg of vitamin E and 0.30 ppm organic Selenium did not affect bird performance, but improved egg quality and shelf life. Highlights: This study evaluated the nutraceutical effects of organic selenium and vitamin E supplementation on egg quality of Japanese quails. Forty-two posture cages with six birds each were randomly set in seven treatments. Each treatment consisted of the addition of 200 IU of vitamin E/kg of feed and increasing levels of organic selenium. Supplementing 200mg of vitamin E and 0.30 ppm organic selenium did not affect bird performance, but improved egg quality and shelf life

Ethno-zootechny and its relationship with traditional knowledge in family farming / A etnozootecnia e sua relação com os saberes tradicionais do agricultor familiar

Ethno-zootechny is a contemporary science, an analytical instrument for rescuing knowledge and its relationship with society's culture. The work aimed to analyze the perception and understanding of rural family's livestock about the ethno-zootechny concepts in the social, economic, and environmental scope in the Northwest of Minas Gerais. To this end, research was conducted using a semi-structured script involving 50 farmers, representatives of rural producers' families during 2019. Subsequently, the data obtained were analyzed in the light of a statistical and descriptive approach to the results. A cluster analysis was performed by the hierarchical method using the Ward model. The results indicate that the interviewees feel devalued by society as producers, on the other hand, maintain that the current condition of cattle ranchers is related to the intangible elements: inheritance of property, way of life, tradition, and preservation of rural values. The research pointed out that the form of knowledge acquisition encompasses a traditional process of transmitting knowledge across generations. The survey demonstrates a low level of technical assistance in the interviewed properties. It is concluded that the main form of knowledge transmission is generational. There is a confrontation between the old and the modern because of inherited and acquired rationalities and resistance with the new production technologies in family production units in the Northwest of Minas Gerais

Egg quality of Japanese quail (Coturnix japonica) fed diets with different levels of total lysine

The effects on Japanese quail egg quality of rations containing 18% crude protein and five levels of total lysine (0.6%, 0.8%, 1%, 1.2%, and 1.4%) were evaluated using 400 birds, 70 d of age and 134.8 ± 3.6 g initial live weight, during a 84-d experiment divided into three 28 d periods. Significant (P < 0.05) quadriatic effects of lysine level were found on egg weight (10.69 g overall mean), weight of egg shell and of yolk, but not of albumin; and percentage of total egg weight constituted by yolk (29.87 mean), and by albumin (61.82 mean), but not by shell (8.3 mean). The treatments did not affect egg shell thickness (0.241 mm mean). The best result was obtained in each case with a lysine level near 1%. As the three periods progressed the absolute and percentage weight of egg shell and its thickness decreased while the opposite occurred with yolk weight

Nutrição de Roedores de Laboratório: Paradigmas e Desafios

Submitted by Ana Helena Freire ([email protected]) on 2016-06-15T14:22:02Z No. of bitstreams: 1 RSBCAL SP 2014.pdf: 9347274 bytes, checksum: 4b853650f9e43e28c247e8b6ade664d1 (MD5)Approved for entry into archive by Ivan Neves Junior ([email protected]) on 2016-08-09T11:13:04Z (GMT) No. of bitstreams: 1 RSBCAL SP 2014.pdf: 9347274 bytes, checksum: 4b853650f9e43e28c247e8b6ade664d1 (MD5)Made available in DSpace on 2016-08-09T11:13:04Z (GMT). No. of bitstreams: 1 RSBCAL SP 2014.pdf: 9347274 bytes, checksum: 4b853650f9e43e28c247e8b6ade664d1 (MD5) Previous issue date: 2014Submitted by Gilvan Almeida ([email protected]) on 2016-08-17T14:11:09Z No. of bitstreams: 3 RSBCAL SP 2014.pdf.txt: 9 bytes, checksum: 33f4f15a16a9843faf6a25d4f387b6fd (MD5) RSBCAL SP 2014.pdf: 9347274 bytes, checksum: 4b853650f9e43e28c247e8b6ade664d1 (MD5) license.txt: 2991 bytes, checksum: 5a560609d32a3863062d77ff32785d58 (MD5)Approved for entry into archive by Fátima Fandinho Montes ([email protected]) on 2018-09-27T18:52:20Z (GMT) No. of bitstreams: 3 license.txt: 2991 bytes, checksum: 5a560609d32a3863062d77ff32785d58 (MD5) RSBCAL SP 2014.pdf: 9347274 bytes, checksum: 4b853650f9e43e28c247e8b6ade664d1 (MD5) RSBCAL SP 2014.pdf.txt: 9 bytes, checksum: 33f4f15a16a9843faf6a25d4f387b6fd (MD5)Made available in DSpace on 2018-09-27T18:52:22Z (GMT). No. of bitstreams: 3 license.txt: 2991 bytes, checksum: 5a560609d32a3863062d77ff32785d58 (MD5) RSBCAL SP 2014.pdf: 9347274 bytes, checksum: 4b853650f9e43e28c247e8b6ade664d1 (MD5) RSBCAL SP 2014.pdf.txt: 9 bytes, checksum: 33f4f15a16a9843faf6a25d4f387b6fd (MD5) Previous issue date: 2014Fundação Oswaldo Cruz. Centro de Criação de Animais de Laboratório. Rio de Janeiro, RJ, Brasil.Roedores de laboratório, como camundongos, ratos e hamster são os principais animais utilizados como biomodelos experimentais. Entretanto informações no âmbito da sua nutrição e manejo alimentar encontram-se desatualizadas. Atualmente é utilizada uma única formulação para atendimento das diferentes espécies, linhagens e categorias. Isso limita a resposta biológica e reduz a acurácia dos resultados experimentais com esses animais. Esta revisão aborda os pontos conceituais, os paradigmas e desafios da nutrição de roedores de laboratório, e busca incentivar o debate em torno do tema

Estratégias estratégias nutricionais para manipulação da concentração de colesterol no ovo de poedeiras comerciais

Durante décadas o colesterol foi associado a doenças vasculares e cardiopatias, sendo por inúmeras vezes contraindicado o seu consumo, e consequentemente o ovo. Visando impulsionar o aumento no consumo per capita de ovos, inúmeras pesquisas foram conduzidas com o objetivo de reduzir a concentração de colesterol na gema do ovo de poedeiras comerciais, a partir de manipulações dietéticas de galinhas e codornas. Os resultados obtidos se mostraram eficientes em diversas estratégias tais como carvão vegetal, fontes de óleos, compostos fenólicos etc. Entretanto, mecanismos fisiológicos adaptativos impedem que as aves mantenham as concentrações de colesterol reduzidas permanentemente. Objetivou-se com esta revisão discutir resultados de protocolos científicos conduzidos para reduzir a concentração de colesterol na gema do ovo de poedeiras.For decades, cholesterol has been associated with vascular diseases and heart diseases, and its intake, and consequently the egg, has been contraindicated for many times. Aiming to boost the increase in per capita egg intake, researches were conducted with the objective of reducing the cholesterol concentration in the egg yolk of commercial laying hens, from dietary changes of chickens and quails. The results obtained were efficient in several strategies such as charcoal, sources of oils, phenolic compounds, etc. However, adaptive physiological mechanisms prevent birds from maintaining cholesterol concentrations permanently reduced. The objective of this review was to discuss the results of scientific protocols conducted to reduce the cholesterol concentration in the egg yolk of laying hens

Utilização da DL-metionina e metionina hidroxi-análoga na alimentação de aves

A metionina é um aminoácido sulfurado essencial e aparece como primeiro limitante nas rações de aves. As fontes deste aminoácido encontradas no mercado são: o ácido DL-2-amino- 4-metiltio butanóico (DLM) e o ácido DL-2- hidroxi-4 (metilo) butanóico, mais conhecido como metionina hidróxi análoga ácido livre (MHA-AL). Os valores de bioeficácia são obtidos através de ensaios de dose-resposta utilizando modelos exponenciais para explicar as respostas dos animais às fontes de metionina. Não é apenas a composição da dieta basal que influenciaria a eficiência da utilização da MHA-AL, mas as diferenças nos níveis da metionina dietética e o total dos aminoácidos sulfurados contidos na dieta basal. Os efeitos sobre o desempenho em rações para frangos de corte e poedeiras suplementadas com este aminoácido já são consolidados. Objetivou-se com esta revisão discutir a suplementação da DL-Metionina (DLM) e Metionina Hidróxi Análoga acido livre (MHA-AL) como fonte do aminoácido metionina para frangos de corte e poedeiras, sob a ótica acadêmica e da indústria, abordando os aspectos nutricionais, econômicos dentre outros

Relações clínicas dos contraceptivos orais no curso da doença periodontal

A saúde dos tecidos periodontais encontra-se intimamente ligada ao equilíbrio entre fatores agressores e protetores ao periodonto. Há evidências de que o uso de contraceptivos orais provocam alterações deletérias aos tecidos periodontais. Objetivou-se com esta revisão correlacionar uso de contraceptivos orais no curso da doença periodontal. Resultados controversos das pesquisas realizadas entre as décadas de60 a90 indicam que a concentração hormonal nos contraceptivos está intimamente correlacionada à resposta inflamatória tecidual. Atualmente, os contraceptivos orais parecem não influenciar no curso da doença periodontal, mas sim, a higienização e manutenção da saúde bucal ineficiente do paciente em inibir os agentes etiológicos associados à patologia

El clima y sus implicaciones para la producción de leche en el cerrado brasileño

Objective. To analyze the climate in the last thirty years in the Northwest of Minas and its impacts on dairy production. Materials and Methods. The database of the National Institute of Meteorology was used during the period from 1985 to 2017 in the cities of Unaí, Paracatu, Arinos and Formoso/MG. For each month and year, the average minimum temperature (Tmin), maximum temperature (Tmax), relative humidity (RH), Temperature and Humidity Index (THI), Wet-bulbe Globe Temperature Index (WBGT), estimate of the decrease in milk production (DMP) and DMP on critical days (DMPc) were calculated. Results. The results were evaluated using the lm function of R, and the t test to test the null hypothesis that the regression coefficient was equal to zero with a significance level of 5%. An increase in Tmax and Tmim values by 0.6-0.9°C respectively was observed. The THI and WBGT values in the municipalities show states of danger and emergency. The DMP obtained were 2.8 kg cow-1 day-1 (Paracatu and Formoso), 3.2 kg cow-1 day-1 in Unaí and between 3.7 and 4.6 kg cow-1 day-1 in Arinos. Conclusions. It is verified that the thermal condition in the studied cities is outside the considered thermoneutral zone, being necessary primary and secondary environmental modifications to guarantee the welfare of the animals and satisfactory livestock indexes.Objetivo. Analizar el clima en los últimos treinta años en el Noroeste de Minas y sus impactos en la producción lechera. Materiales y Métodos. Se utilizó la base de datos del Instituto Nacional de Meteorología durante el período de 1985 a 2017 en las ciudades de Unaí, Paracatu, Arinos y Formoso/MG. Para cada mes y año, la temperatura mínima promedio, la temperatura máxima, la humedad relativa, el índice de temperatura y humedad, el índice de temperatura de bulbo húmedo y globo, la estimación de la disminución de producción la leche. Resultados. Los resultados fueron evaluados utilizando la función lm de R, y la prueba t para probar la hipótesis nula de que el coeficiente de regresión fue igual a cero con un nivel de significación del 5%. Se observó un aumento en los valores de temperatura máxima y temperatura mínima de 0.6-0.9°C respectivamente. Los valores del índice de temperatura y humedad e índice de temperatura de bulbo húmedo y globo en los municipios muestran estados de peligro y emergencia. La estimación de la disminución de producción de leche obtenidos fueron 2.8 kg vaca-1 día-1 (Paracatu y Formoso), 3.2 kg vaca-1 día-1 en Unaí y entre 3.7 y 4.6 kg vaca-1 día-1 en Arinos. Conclusiones. Se verifica que la condición térmica en las ciudades estudiadas se encuentra fuera de la zona termoneutra considerada, siendo necesarias modificaciones ambientales primarias y secundarias para garantizar el bienestar de los animales e índices zootécnicos satisfactorios

Roof pitch and exposure and different roofing materials in reduced models of animal production facilities in the fall and winter

AbstractThe objective was to verify the influence of roof pitch, exposure and roofing material on the internal temperature of reduced models of animal production facilities. For the development of the research, 48 reduced models with dimensions 1.00 × 1.00 × 0.50m were used. The roof was shed-type, and models faced the North or South directions, with 24 models for each side of exposure. Ceramic, galvanized-steel and fibro tiles were used to build the roofs. Pitches varied between 20; 30; 40 and 50% for the ceramic tile and 10; 30; 40 and 50% for the other two. Inside the model, temperature readings were performed at every hour, for 12 months. The results were evaluated in a general linear model in a nested 3 × 4 × 2 factorial arrangement. As the roof pitch increased, the internal temperature within the model dropped, so utilizing sharper pitches (50%) for ceramic and fibro roofs with a larger area facing the South can provide lower temperatures within the animal production facilities. In regions where the cold is more stressful than the heat, having animal production facilities with larger roof exposure to the North may minimize the losses caused by cold stress

Pigmentantes naturais em rações à base de sorgo para codornas japonesas em postura

Esta pesquisa foi realizada para avaliar os efeitos do uso de pigmentantes naturais e extratos de marigold e páprica em rações à base de sorgo para codornas japonesas. Foram utilizadas 180 codornas japonesas (Coturnix japonica), com 98 dias de idade, distribuídas em delineamento inteiramente casualizado em esquema de parcelas subdivididas, composto por cinco tratamentos e seis repetições com seis aves cada. O experimento foi dividido em seis períodos de quatro dias, totalizando 24 dias. Foram analisados o desempenho produtivo e a qualidade dos ovos das codornas. A cor da gema foi avaliada a cada quatro dias durante 24 dias pelo método do escore colorimétrico DSM. Não houve efeito dos tratamentos sobre o desempenho e a qualidade dos ovos das codornas, à exceção da cor da gema. O extrato de marigold proporcionou escore colorimétrico da gema equivalente ao das aves alimentadas com milho. A suplementação associada dos extratos de marigold e páprica proporcionou maior escore colorimétrico e em menor tempo. A utilização de pigmentantes naturais deve ser analisada considerando o escore colorimétrico que se deseja obter e o custo da suplementação de cada fonte comercial