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Search Results: 1 - 10 of 41838 matches for " Paulo Fernando;Demétrio "
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Contagem de células somáticas e produ o de leite em vacas holandesas de alta produ o
Coldebella Arlei,Machado Paulo Fernando,Demétrio Clarice Garcia Borges,Ribeiro Júnior Paulo Justiniano
Pesquisa Agropecuária Brasileira , 2003,
Abstract: A mastite bovina pode ser clínica, com sinais visíveis, e subclínica, diagnosticada pela contagem das células somáticas. As perdas econ micas causadas pela mastite subclínica devem ser quantificadas para atender à demanda nacional de produtos lácteos. O objetivo deste trabalho foi verificar se as perdas na produ o de leite, pelo aumento do número de células somáticas, s o proporcionais ou independentes do nível de produ o. Foram utilizadas 7.756 observa es, colhidas mensalmente de um único rebanho, de setembro de 2000 a junho de 2002. A curva de lacta o foi modelada pela fun o gama incompleta, e os efeitos de ordem de lacta o, época do parto, ocorrência de doen as no periparto e escore de condi o corporal ao parto também foram considerados. A contagem de células somáticas foi incluída nesse modelo como fator multiplicativo, representando perdas relativas, e como fator aditivo, representando perdas absolutas. A escolha do melhor modelo foi baseada no critério de informa o de Schwarz (BIC). As perdas s o absolutas, evidentes a partir de 14.270 células/mL e para cada aumento de uma unidade na escala do logaritmo natural a partir desse valor, estimam-se perdas de 184 e 869 g/dia para vacas primíparas e multíparas, respectivamente.
Local and regional richness and rarity of leaf-litter ants: An overview from spacial scale in neotropical region  [PDF]
Manoel Fernando Demétrio, Rogério Silvestre
Open Journal of Animal Sciences (OJAS) , 2013, DOI: 10.4236/ojas.2013.32A002
Abstract: An unusual approach about richness and rarity of leaf-litter ant species is presented here from a dry forest reminiscent in Pantanal province (Chacoan subregion) suggesting the boundaries that defining local and regional scales for this particular ant community. We analysed the frequency of distribution of 170 ant species collected on 262 Winkler’s samples along Serra da Bodoquena National Park, Mato Grosso do Sul state, Brazil and described some ecological mechanisms that made the species richness estimates be highly influenced by species with low frequencies of records in an extent regional of a pristine dry forest. Bayesian inference was conducted to provide if the probability of latitudinal gradient was correlated with the species richness to define alpha diversity.
Local and regional richness and rarity of leaf-litter ants: An overview from spacial scale in neotropical region  [PDF]
Manoel Fernando Demétrio, Rogério Silvestre
Open Journal of Animal Sciences (OJAS) , 2013, DOI: 10.4236/ojas.2013.32A002
Abstract:

An unusual approach about richness and rarity of leaf-litter ant species is presented here from a dry forest reminiscent in Pantanal province (Chacoan subregion) suggesting the boundaries that defining local and regional scales for this particular ant community. We analysed the frequency of distribution of 170 ant species collected on 262 Winkler’s samples along Serra da Bodoquena National Park, Mato Grosso do Sul state, Brazil and described some ecological mechanisms that made the species richness estimates be highly influenced by species with low frequencies of records in an extent regional of a pristine dry forest. Bayesian inference was conducted to provide if the probability of latitudinal gradient was correlated with the species richness to define alpha diversity.

Contagem de células somáticas e produ??o de leite em vacas holandesas de alta produ??o
Coldebella, Arlei;Machado, Paulo Fernando;Demétrio, Clarice Garcia Borges;Ribeiro Júnior, Paulo Justiniano;Corassin, Carlos Humberto;Meyer, Paula Marques;Cassoli, Laerte Dagher;
Pesquisa Agropecuária Brasileira , 2003, DOI: 10.1590/S0100-204X2003001200012
Abstract: the goal of this paper was to evaluate if losses in milk yield due to increase in somatic cells count are proportional or independent of the level of production. a total of 7,756 observations, monthly collected from a single herd from september/2000 up to june/2002, were used. the lactation curve was modeled by the incomplete gamma function, considering the effects of lactation order, calving season, peripartum disorder incidence and body condition score at calving. somatic cells count was added to the model as a multiplicative factor, representing relative losses, and as an additive factor, representing absolute losses. the best model was chosen based on the information criteria of schwarz (bic). the losses are absolute, becoming evident from 14,270 cells/ml, and they are 184 and 869 g/day for each increase of one unit in the natural logarithm scale, starting from that somatic cells count, for primiparous and multiparous cows, respectively.
Contagem de células somáticas e produ??o de leite em vacas holandesas confinadas
Coldebella, Arlei;Machado, Paulo Fernando;Demétrio, Clarice Garcia Borges;Ribeiro Júnior, Paulo Justiniano;Meyer, Paula Marques;Corassin, Carlos Humberto;Cassoli, Laerte Dagher;
Revista Brasileira de Zootecnia , 2004, DOI: 10.1590/S1516-35982004000300011
Abstract: the relationship between milk somatic cells count (scc) and milk yield has been the aim of countless researches in several countries; however, in brazil, the literature related to this subject is scarce. therefore, the objective of this study is to verify if the losses in milk yield due to scc increase are proportional to the yield, or absolute (independent of it) and starting from which scc, the losses become evident. for this study, 13.725 observations were used, collected monthly from 6 different herds, from january/2001 up to june/2002. the analysis model, for lactation curve, was based upon the incomplete gama function, considering the effects of lactation order, herd and calving season. the scc entered in that model in two ways: as multiplicative factor (representing relative losses) and as addictive factor (representing absolute losses). the best model was chosen based on the information criteria of schwarz (bic). it is concluded that the losses are absolute, becoming evident from 17.000 cells/ml, and they are 238 and 868 ml/day for each increase of one unit in the natural logarithm scale, starting from that scc, respectively, for primiparous and multiparous.
A??o de fitoreguladores no desenvolvimento de Chrysanthemum leucanthemum L.
Castro, Paulo R.C.;Demétrio, Clarice G.B.;Carlucci, Marisa V.;
Anais da Escola Superior de Agricultura Luiz de Queiroz , 1979, DOI: 10.1590/S0071-12761979000100004
Abstract: plants of chrysanthemum leucanthemum grown in pots with soil under greenhouse conditions, were sprayed with growth regulators twice, in may and june, to study the development of the plants in october. succinic acid-2,2-dimethylhydrazide (sadh) at concentrations of 1250, 2500 and 5000 ppm, (2-chloroethyl) trimethylammonium chloride (ccc) 2000 ppm, (2-chloroethyl) phosphonic acid (cepa) 320 ppm, maleic hydrazide (mh;) 1000 ppm, gibberellic acid (ga) 50 and 100 ppm, indolylacetic acid (iaa) 100 ppm, and water as check treatment, were applied. mh 1000 ppm reduced the number of leaves and stems. sadh treatments reduced the shoot growth and the number of stems. applications of iaa 100 ppm promoted the formation of higher number of leaves and stems in chrysanthemum leucanthemum. it was seen that sprays with ga at a concentration of 100 ppm elongated shoots.
Efeitos da vernaliza??o e de fitoreguladores no desenvolvimento de Gladiolus grandiflorus
Castro, Paulo R.C.;Minami, Keigo;Gil, Carolina M.;Demétrio, Clarice G.B.;
Anais da Escola Superior de Agricultura Luiz de Queiroz , 1979, DOI: 10.1590/S0071-12761979000100010
Abstract: gladiolus corms were held at 22°c or vernalized at 4° or 8°c for two weeks and then soaked for 24 hours in 1,000 ppm gibberellic acid (ga) or 1,000 ppm indolylacetic acid (iaa) before being planted in the field. there were no differences in the period of time for shoot emergence among the treatments. treatment of gladiolus corms with 4°c for two weeks increased plant height in relation to storage at 22°c (control). gladiolus corms soaked for 24 hours in 1,000 ppm ga reduced the number of leaves of the plants, and corms vernalization at 4°c for two weeks increased the number of leaves. corms vernalization at 4° or 8°c for two weeks improved plant quality. there were no differences in the dates of anthesis among the treatments. flower quality was improved by corm vernalization at 4° or 8°c for two weeks.
Aplica??o de produtos químicos na repicagem da figueira
Castro, Paulo R.C.;Sampaio, Vladimir R.;Demétrio, Clarice G.B.;
Anais da Escola Superior de Agricultura Luiz de Queiroz , 1981, DOI: 10.1590/S0071-12761981000100014
Abstract: this research deals with the effects of chemicals on, transplantation of ficus carica l. cv. roxo de valinhos. fig plants were sprayed with transplantone (naphthaleneacetamide plusnaphtaleneacetic acid) 10 g/1 , oed green (oxyethylene docosanol) 40 ml/1, good-rite peps (polyethylene polysulfite) 0,6 ml/1, and mobileaf 200 ml/1. a check treatment and aereduction to half of leaf area were also established. reduction of leaf area and application of oxyethylene docosanol promoted higher plant survival. the chemicals did not affect the growth of transplanted plants. auxins constituents of transplantone increased leaf number of fig plants.
Efeitos de reguladores vegetais na germina??o de sementes
Castro, Paulo R.C.;Gon?alves, M. Bernadete;Demétrio, Clarice G.B.;
Anais da Escola Superior de Agricultura Luiz de Queiroz , 1985, DOI: 10.1590/S0071-12761985000200009
Abstract: this research deals with the effects of exogenous growth regulators on germination of seeds of several plants. to study the influence of the chemicals, zea mays, crotalaria juncea, lablab purpurcus, arachis hypogeae, setaria anceps, brachiaria humidicola. stylosanthes sp . , macroptilium a tropurpurcum , tefrosia candida, neonotonia wightti and panicum maximum seeds were immersed during 22 hours in water solutions of (2-chloroethyl ) trimethylammonium chloride (ccc) 2000 ppm, succinic acid - 2,2-dimethylhydrazide (sadh) 4000 ppm, gibberellic acid (ga) 100 ppm, indoiylacetic acid (iaa) 100 ppm, 6-furfurylaminopurine (fap) 100 ppm, and water ascheck treatment. ga increased germination of brachiaria, macroptilium, neonotonia and green panic. ga also promoted a more rapid growth of crotalaria, lablab and stylosanthes seedlings. iaa application increased growth of stylosanthes seedlings; ga and iaa also increased the leaf number of these plants. soaking lablab and peanut seeds in sadh reduced the growth of the seedlings. fap treatment reduced the growth of corn and lablab plants and increased the growth of stylosanthes.
A??o de calciocianamida e alzodef na época de brota??o e produtividade da videira 'Niagara Rosada'
Pires, Erasmo J.P.;Castro, Paulo R.C.;Demétrio, Clarice G.B.;
Anais da Escola Superior de Agricultura Luiz de Queiroz , 1985, DOI: 10.1590/S0071-12761985000200010
Abstract: in an experiment carried out in jundiaí, s?o paulo state, it was studied the possibility of termination of rest in plant buds by treatment with chemicals. the control of bud sprouting in the vineyard is important to pre vent chilling effects and to increase grape harvesting period. at october, 28, two hours after pruning, 'niagara rosada' plants were treated with calcium cyanamide at 20% applied on buds and on cuted region of pruned twig, sprayed with alzodef 2% and 5%. it was observed that alzodef 2% terminated bud rest more rapidly in relation to the control plants. application of calcium cyanamide 20% on buds or on cuted region, and spraying with alzodef 2% or 5% promoted good results on terminate bud rest of 'niagara rosada' plants. the chemiacals did not affect significantly the quantity of bunches and the yield per plant.
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