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| Registros recuperados: 11 | |
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| Morais,Sonia Cristina Daróz de; Menten,José Fernando Machado; Brainer,Mônica Maria de Almeida; Vale,Marcos Martinez do. |
| O cobre, em níveis supranutricionais nas dietas de frangos de corte, atua como promotor do crescimento. Para avaliar as respostas no desempenho e no colesterol sérico e muscular de frangos de corte, 1200 pintos (600 machos e 600 fêmeas) receberam rações suplementadas com 50, 100 ou 150 mg kg-1 de cobre como citrato cúprico, ou 200 mg kg-1 de cobre como sulfato cúprico pentahidratado, ou uma dieta controle, não suplementada, em um experimento em blocos casualizados com três repetições e arranjo fatorial de cinco tratamentos e dois sexos. As rações, baseadas em milho e farelo de soja e adequadas em todos os nutrientes (12 mg kg-1 de cobre na dieta controle), e água foram fornecidas à vontade durante o experimento de 42 dias. Não houve efeito (P>0,05) de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citrato cúprico; Colesterol; Frango de corte; Promotor de crescimento; Sulfato cúprico. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162001000100001 |
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| Lovato,Gustavo Dias; Vale,Marcos Martinez do; Oliveira,Vladimir de; Klein,Daniela Regina; Branco,Tatiane. |
| ABSTRACT The objective of this study was to evaluate a growth model applied to adjust nutritional programs for growing and finishing pigs, in a commercial production context. The phase I (calibration) was conducted in a commercial pig production unit. The data were collected from a nutritional program, a feed program, and an animal profile. In experimental phase II, these data were entered in the InraPorc® model for simulations and to propose adjustments to the commercial nutritional program. Afterwards, the conventional nutritional program (CNP) and the adjusted nutritional program (ANP) were compared with InraPorc® simulation. Animal profile was collected by weighing 30% of pigs per stall and monitoring their feed intake in each stage. Four hundred and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: InraPorc®; Modeling; Pig production; Temperature. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000900755 |
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| Ferreira,Priscila Becker; Vale,Marcos Martinez do; Macedo,Andre; Boemo,Lenise Shroder; Rorato,Paulo Roberto Nogara; Beck,Tamiris Barbosa. |
| O estudo foi realizado com o banco de dados do Programa de Melhoramento Genético de Poedeiras de Ovos Marrons do Laboratório de Avicultura (LAVIC) do Departamento de Zootecnia da Universidade Federal de Santa Maria (UFSM), onde são utilizadas aves das raças Plymouth Rock White (PRW), Plymouth Rock Barred (PRB) e Rhode Island Red (RIR). Os dados utilizados foram referentes a duas gerações das três raças durante o primeiro ciclo de produção, dos anos de 2009 e 2010. Os parâmetros avaliados foram: taxa de postura semanal, peso dos ovos e peso corporal. O estudo foi dividido em duas abordagens de análise, a primeira análise foi realizada com os dados produtivos com o objetivo de identificar pontos críticos de seleção fenotípica, relacionados à caracterização... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioclimatologia; Ovos marrons; Melhoramento animal; Ambiência. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782013000100027 |
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| Brainer,Mônica Maria de Almeida; Menten,José Fernando Machado; Vale,Marcos Martinez do; Morais,Sônia Cristina Daroz de. |
| Feeding cupric citrate as alternative to cupric sulfate to broilers has been suggested in the literature. Day-old male broiler chicks (1,200) were used in an experiment to evaluate the efficacy of cupric citrate supplementation (75 mg Cu kg-1) during the 1-21, 22-42 or 1-42 d periods in comparison to an unsupplemented diet and a diet supplemented with cupric sulfate (200 mg Cu kg-1, 1-42 d). A randomized block design was used, with five treatments, six replicates and 40 birds per pen. The diets, based on corn and soybean meal, and water were offered ad libitum during the 42-day experimental period. Over the entire period, there was no effect of copper supplementation (P > 0.05) on bird live weight, weight gain, feed intake, feed conversion and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broiler litter; Poultry; Copper; Performance. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000300004 |
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| Klein,Daniela Regina; Vale,Marcos Martinez do; Silva,Mariana Fernandes Ribas da; Kuhn,Micheli Faccin; Branco,Tatiane; Santos,Mauricio Portella dos. |
| ABSTRACT The hatchery is one of the most important segments of the poultry chain, and generates an abundance of data, which, when analyzed, allow for identifying critical points of the process . The aim of this study was to evaluate the applicability of the data mining technique to databases of egg incubation of broiler breeders and laying hen breeders. The study uses a database recording egg incubation from broiler breeders housed in pens with shavings used for litters in natural mating, as well as laying hen breeders housed in cages using an artificial insemination mating system. The data mining technique (DM) was applied to analyses in a classification task, using the type of breeder and house system for delineating classes. The database was analyzed in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Attribute selection; Classification tree; Data management; Data mining and information technology. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000400501 |
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| Nääs,Irenilza de Alencar; Romanini,Carlos Eduardo Bites; Salgado,Douglas D'Alessandro; Lima,Karla Andrea Oliveira; Vale,Marcos Martinez do; Labigalini,Marcelo Ricardo; Souza,Silvia Regina Lucas de; Menezes,Adriana Gomes; Moura,Daniella Jorge de. |
| Global warming is affecting agribusiness in its economic aspects. Therefore, the prediction of the evolution of Brazilian beef cattle production cost was made using the IPCC forecast scenario for global warming. The methodology consisted of two steps: (i) the development of a fuzzy model that estimated the grazing land capacity (RP) decrease risk as a function of the changes in the average total rain index, air temperature and increase in extension of the dry season; and (ii) the design of an algorithm for predicting the decrease in production as function of the RPfuzzy model, that results in the impact in beef cattle productivity, and consequent increase in production costs. Historical environmental data from important producing counties in the Cerrado... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dry season; Environmental temperature; Fuzzy simulation; Mathematical modeling. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000100001 |
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| Brunassi,Leandro dos Anjos; Moura,Daniella Jorge de; Nääs,Irenilza de Alencar; Vale,Marcos Martinez do; Souza,Silvia Regina Lucas de; Lima,Karla Andrea Oliveira de; Carvalho,Thayla Morandi Ridolfi de; Bueno,Leda Gobbo de Freitas. |
| Production losses due to lack of precision in detecting estrus in dairy cows are well known and reported in milk production countries. Nowadays automatic estrus detection has become possible as a result of technical progress in continuously monitoring dairy cows using fuzzy pertinence functions. Dairy cow estrus is usually visually detected; however, solely use of visual detection is considered inefficient. Many studies have been carried out to develop an effective model to interpret the occurrence of estrus and detect estrus; however, most models present too many false-positive alerts and because of this they are sometimes considered unreliable. The objective of this research was to construct a system based on fuzzy inference functions evaluated with a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Estrus cycle; Artificial intelligence; Expert system. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000500002 |
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| Vale,Marcos Martinez do; Menten,José Fernando Machado; Morais,Sônia Cristina Daróz de; Brainer,Mônica Maria de Almeida. |
| The presence of Salmonella species in feeds and ingredients is an important source of salmonella contamination for animals. Organic acid mixtures have shown to be an effective alternative to eliminate salmonellas in feeds and chickens. In the present study, the performance of male broiler chickens receiving levels (0, 0.25, 0.50, 1.0 and 2.0%) of a mixture of organic acids (OAs) (70% formic acid and 30% propionic acid) in the diet was evaluated from the age one to 42 days, in a completely randomized experimental design with five treatments and five replications of 40 birds each. Diets were based on corn, soybean meal and soybean oil. Body weight, weight gain and feed intake from the age one to 21 days were affected by the treatments; 2% OAs in the diet... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Salmonella; Chicken; Organic acids; Food safety. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000400004 |
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| Registros recuperados: 11 | |
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