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| Rosa,Alexandre Pires; Pilecco,Márcio; Lucca,Walter; Uttpatel,Rodrigo. |
| O objetivo deste experimento foi avaliar o efeito do nível de cálcio na dieta sobre o peso corporal e as variáveis reprodutivas (volume de sêmen, número de células espermáticas e fertilidade) em reprodutores de corte machos com ou sem crista. Foram utilizados 32 machos Cobb 500, 50% com crista inteira e 50% sem crista. O delineamento experimental utilizado foi o inteiramente casualizado, com esquema fatorial 2x2, duas condições de crista (com e sem) e dois níveis de cálcio (0,90 e 1,35%). O sêmen foi coletado pelo método americano, e o número de células espermáticas foi determinado em câmara de Neubauer. Na 42ª, na 43ª e na 44ª semana de idade dos machos, 48 fêmeas para cada tratamento foram inseminadas artificialmente. As inseminações foram realizadas... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fertilidade; Avicultura; Células espermáticas; Volume de sêmen. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010001000020 |
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| Tabaldi,Luciane Almeri; Vieira,Maria do Carmo; Zárate,Nestor Antonio Heredia; Silva,Luan Ramos da; Gonçalves,Wander Luiz Farias; Pilecco,Márcio; Formagio,Anelise Samara Nazari; Gassi,Rosimeire Pereira; Padovan,Milton Parron. |
| The use of cover crops can reduce or even eliminate the use of nitrogenous fertilizers, contributing to a more sustainable agriculture and ensuring the conservation of natural resources. Thus, the aim of this research was to evaluate the use of cover crops to improve the biomass yield of Serjania marginata plants. The experiment was carried out at the Federal University of Grande Dourados, in Dourados-MS, from December 2009 to February 2011. A split plot design was used in a randomized block design with four replications, being evaluated in plots three species of tropical legumes (Stizolobium aterrimum, Crotalaria spectabilis and Canavalia ensiformes, and one control plot (without cover crops), and in subplots the addition or not of nitrogen (N) (at 150... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sapindaceae; Timbó; Stizolobium aterrimum; Crotalaria spectabilis; Canavalia ensiformes. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782012000400006 |
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| Barbosa,Rogério Hidalgo; Tabaldi,Luciane Almeri; Miyazaki,Fábio Rodrigo; Pilecco,Márcio; Kassab,Samir Oliveira; Bigaton,Daísa. |
| A slight increase in the levels of a certain nutrient can cause a significant increase in crop yield or can cause phytotoxicity symptoms. Thus, the aim of this study was to evaluate the effect of foliar application of copper (Cu) on the growth and yield of DG-501 maize. The experiment was carried out between December 2009 and April 2010 in conventional tillage. When plants were with six to eight leaves, Cu (0, 100, 200, 300, 400, 500 and 600g ha-1) was applied to the leaves. Treatments were arranged in randomized complete block with five replications. When 50% of the plants were in flowering, it was evaluated the plant height, culm diameter, height of the first ear insertion, leaf area, and chlorophyll content. At harvest, it was evaluated diameter and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fertilization; Micronutrient; Toxicity; Zea mays. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782013000900005 |
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