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Registros recuperados: 60 | |
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Alvarado Castillo, Gerardo. |
La domesticación de hongos silvestres comestibles, particularmente de Morchella es actualmente una necesidad, generada por su demanda en los mercados nacionales e internacionales. Sin embargo, no se tiene establecido un procedimiento para su producción comercial y el 100% de la producción comercializada proviene de recolecta del bosque, ocasionando la degradación del recurso. Por tanto, para contribuir a la solución de esta situación se realizó la presente investigación, la cual integra dos etapas, una de reflexión teórica y la otra de estudios experimentales. En la primera, se efectuó un trabajo de análisis, identificando el papel del enfoque de Agroecosistemas y una propuesta conceptual de la domesticación para el caso de los hongos silvestres... |
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Palavras-chave: Domesticación; Inducción; Recolección; Suplementación; Domestication; Induction; Harvesting; Supplementation; Doctorado; Agroecosistemas tropicales. |
Ano: 2011 |
URL: http://hdl.handle.net/10521/701 |
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Rocha,Anilza Andréia da; Paulino,Mário Fonseca; Fernandes,Henrique Jorge; Barros,Lívia Vieira de; Lopes,Sidnei Antonio; Galon,Leandro; Silva,Aline Gomes da; Almeida,Daniel Mageste de. |
The objective of this experiment was to estimate the requirements of energy, protein and macrominerals of grazing crossbreds calves, in Brachiaria decumbens Stapf pasture, castrated at different ages, with and without supplementation. Forty-seven young calves at initial age of 120±30.1 days and 115.3±1.97 kg of live weight were used. To estimate net energy requirements for weight gain, a regression equation between energy retained in the gain and empty body weight gain and metabolic empty body weight was obtained. For estimation of net protein requirements for weight gain, a regression equation was adjusted between protein retained in gain and empty body weight gain and energy content of this gain. Net requirements of Ca, P, Mg and Na for weight gain were... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Castration; Supplementation; Zebu cattle. |
Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000200025 |
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Machado,Henrique Valentim Nunes; Pereira,José Carlos; Bettero,Vitor Pereira; Leonel,Fernando de Paula; Araújo,Raphael Pavesi; Moreira,Leonardo Marmo; Teixeira,Rafael Bastos; Zervoudakis,Joanis Tilemahos. |
ABSTRACT The objective of this study was to evaluate the effects of different lipid sources in diets for lactating cows on milk yield and composition, conjugated linoleic acid (CLA) content, and fatty acid profile in the milk fat. Five primiparous Holstein cows were distributed in a 5 × 5 Latin square design. Treatments were: control (no lipid addition) and four other diets containing different lipids sources - ground raw soybean, cottonseed, soybean oil, and calcium salts of soybean fatty acids (CSSFA). The greater milk yield (kg/day) and milk lactose (g/kg) and solids non-fat (g/kg) contents were obtained with the animals fed diets with CSSFA. Regarding the fatty acid profile in the milk fat, the diets with CSSFA and ground raw soybeans produced the... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biohydrogenation; Dairy production; Fatty acids; Supplementation. |
Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017001200910 |
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Santos,Rafael Dantas dos; Pereira,Luiz Gustavo Ribeiro; Neves,André Luis Alves; Araújo,Gherman Garcia Leal de; Aragão,Alex Santos Lustosa de; Chizzotti,Mário Luiz. |
The objective of this study was to evaluate the daily intake and total apparent digestibility of dry matter, organic matter, crude protein, gross energy, ether extract, neutral detergent fiber, acid detergent fiber, total and non-fibrous carbohydrates, total digestible nutrients, energy intake and nitrogen balance of silages of six maize varieties with early or super early cycles recommended to Northeast Brazil. Twenty-four male castrated lambs were lodged in metabolic cages. A completely randomized design with six treatments and four replications was used, with means compared by Tukey test at 5%. There were no differences among varieties for any of the evaluated variables regarding intake and apparent digestibility. Concerning the intake of digestible... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Feeding; Nutrition; Sheep; Ruminants; Supplementation; Zea mays. |
Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011001200040 |
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Alhidary,Ibrahim A.; Abdelrahman,Mutassim M.; Alyemni,Abdullah H.; Khan,Rifat Ullah; Al-Saiady,Mohamed Y.; Amran,Ramzi A.; Alshamiry,Faisal A.. |
ABSTRACT Forty male Naemi lambs were used to evaluate the effect of total mixed rations (TMR) alone or in combination with supplementation of alfalfa hay offered at different schedules on growth, carcass characteristics, and meat quality. Lambs at the age of three months, with an average weight of 28.85±1.09 kg, were randomly selected and distributed into four different feeding systems, 10 lambs each, as follows: TMR diet (control); TMR plus 100 g alfalfa hay; TMR plus 200 g alfalfa hay every two days; and TMR plus 300 g alfalfa hay every three days. The TMR and fresh drinking water were offered ad libitum. Lambs in the treated groups (with alfalfa hay) had significantly higher body weight, body weight change, dry matter intake, and feed conversion ratio... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Body weight; Fat depots; Feeding management; Slaughter characteristics; Supplementation. |
Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016000600302 |
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Silva,Rodrigo Gregório da; Neiva,José Neuman Miranda; Santos,Antonio Clementino dos; Cândido,Magno José Duarte; Sousa,Antonio Luiz Dias; Lopes,Marcos Neves; Silva,Rafael de Oliveira da; Carneiro,Leovegildo Caldas. |
The objective of this study was to identify the pattern of deposition of feces by supplemented crossbred dairy cows after the lactation peak on cultivated areas under levels of intensification of the system and its effects on nitrogen cycling, with the aid of geostatistics, in the rainy period. Treatments were composed of two levels of nitrogen fertilization (equivalent to 400 and 800 kg N/ha/year) and two types of animals, according to the daily milk production. Geostatistical and descriptive analyses of the data were conducted. The data presented positive coefficients of skewness and platykurtic kurtosis. For the coefficient of variation, there was elevated alteration, with rest areas showing higher values and paddocks with a higher level of... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Geostatistics; Nitrogen fertilization; Nutrient cycling; Pasture; Supplementation. |
Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000500010 |
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Barros,L.V.; Paulino,M.F.; Valadares Filho,S.C.; Detmann,E.; Silva,F.G.; Valente,E.E.L.; Lopes,S.A.; Martins,L.S.. |
The objective of this work was to evaluate the effect of using multiple supplements with different levels of cottonseed meal 38% on intake, total apparent digestibility of dietary components, efficiency of microbial synthesis and productive performance of beef heifers in Brachiaria decumbens pasture during the rainy season. It was used 25 Nellore heifers and 10 crossbred heifers with predominance of Zebu breed at 16 months of age and with 249.8 ± 0.6 kg of body weight. It was used a complete random experimental design with five treatments and seven replicates. Supplements contained approximately 30% of crude protein (CP) and soybean meal replaced by cottonseed meal 38% at the levels 0; 33; 67 and 100%, (CS0, CS33, CS67 and CS100, respectively) evaluated in... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brachiaria decumbens; Nutritional parameters; Supplementation. |
Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000400020 |
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Landarin,Carolini Machado; Lobato,José Fernando Piva; Tarouco,Adriana Kroef; Tarouco,Jaime Urdapilleta; Eloy,Lidiane Raquel; Pötter,Luciana; Rosa,Antônio Augusto Galarza. |
ABSTRACT Aiming at breeding heifers with 14-15 months of age, 100 Hereford calves were subjected to different feeding systems. Heifers grazed on a natural pasture in early winter, fed or not a supplement (14% crude protein; 72% total digestible nutrients), were transferred to a ryegrass pasture for 73 days, and then returned to a natural pasture for 15 days until the beginning of the breeding season. During the last 15 days on ryegrass pasture and the 15 days of the return to the natural pasture, half of the heifers of the two previous systems were offered the supplement, thereby establishing four feeding treatments. Heifers supplemented during the second period, independently of supplementation during the first grazing period, presented higher average... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Backfat thickness; Natural pasture; Pelvic area; Reproductive tract score; Rib eye area; Supplementation. |
Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016001100667 |
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Registros recuperados: 60 | |
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