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Search Results: 1 - 10 of 157957 matches for " Bastos Jo?o Francisco Pereira "
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Diferentes Níveis de Gr?o de Milheto (Pennisetum glaucum (L.) R. Brown) na Alimenta??o de Suínos
Bastos, Alexandre Orio;Landell Filho, Luiz de Carvalho;Passipieri, Milton;Bastos, Joo Francisco Pereira;
Revista Brasileira de Zootecnia , 2002, DOI: 10.1590/S1516-35982002000700018
Abstract: a trial was carried out to determine the viability of pearl millet inclusion (pennisetum glaucum (l.)r. brown) on pigs feeding, in the growing and finishing phases, considering their effects on daily feed intake, average daily gain and feed conversion. the effect of increasing dietary pearl millet levels on the carcass characteristics was also observed. sixty barrows, comercial hybrids, averaging 22.7kg were used. a completely randomized experimental design, with five treatments (0, 15, 30, 45 and 60% pearl millet in the diets), six replicates and two animals per unit experimental, was used. the values were fitted to polynomial regression. in the growing, finishing phase and in total period, average daily gain and feed conversion were not affected of using pearl millet on feeding. no effect of increasing dietary pearl millet levels on performance in the growing and finishing phases, nor on the carcass characteristics, was observed. it was concluded that peal millet addition in the pig diets is viable. considering the ingredient prices during this trial, the addition of 45% pearl millet was the most economically efficient.
Diferentes Níveis de Gr o de Milheto (Pennisetum glaucum (L.) R. Brown) na Alimenta o de Suínos
Bastos Alexandre Orio,Landell Filho Luiz de Carvalho,Passipieri Milton,Bastos Joo Francisco Pereira
Revista Brasileira de Zootecnia , 2002,
Abstract: Foi desenvolvido um experimento com a finalidade de determinar a viabilidade da inclus o do milheto (Pennisetum glaucum (L.) R. Brown) em ra es de suínos em fases de crescimento e termina o, observando seu efeito sobre o consumo diário de ra o, ganho diário de peso e convers o alimentar. Foi observado também o efeito da adi o de milheto sobre as características de carca a, sendo utilizados 60 leit es machos, híbridos de linhagem comercial, com peso médio inicial de 22,7 kg. Os tratamentos foram 0, 15, 30, 45 e 60% de inclus o de milheto nas ra es de suínos. O delineamento utilizado foi o inteiramente casualizado, com cinco tratamentos e seis repeti es, sendo utilizados dois animais por unidade experimental. Utilizou-se, ainda, os desdobramentos dos graus de liberdade de tratamentos, para a realiza o da regress o polinomial. N o houve efeito dos níveis de inclus o de milheto sobre o desempenho, nas fases de crescimento e termina o, nem sobre as características de carca a. Concluiu-se que a adi o de milheto em ra es de suínos é viável. Considerando-se os pre os dos ingredientes durante este experimento, a adi o de 45% de milheto mostrou-se mais eficiente economicamente.
Características de carca a e composi o corporal de touros jovens da ra a Nelore terminados em diferentes sistemas
Macedo Marcelo Pereira,Bastos Joo Francisco Pereira,Bianchini Sobrinho Evaristo,Resende Flávio Dutra de
Revista Brasileira de Zootecnia , 2001,
Abstract: O objetivo do trabalho foi avaliar comparativamente as características de carca a e a composi o corporal de machos jovens da ra a Nelore n o-castrados, filhos de touros com diferencial positivo (Linhagem Sele o) ou nulo (Linhagem Controle) para ganho de peso aos 378 dias de idade. Utilizaram-se informa es de 92 zebuínos Nelore, com peso de abate médio de 456,00 kg, sendo 51 animais pertencentes à Linhagem Sele o e 41 animais da Linhagem Controle, foram criados em pastagens cultivadas até os 18 meses, quando foram alocados nos dois sistemas de termina o, de forma a compor grupos homogêneos quanto ao peso e filia o. Os animais de confinamento receberam, em baias individuais, ra o para possibilitar ganhos de 1,0 kg/cab/dia. Antes do abate, os animais foram submetidos a jejum e pesados, quando se obteve o peso de abate. Após o armazenamento das carca as em camara fria, obteve-se a se o da 9a-10a-11a costelas. N o houve efeito significativo de linhagem para nenhuma das características analisadas, exceto para a porcentagem de ossos, sendo que os animais da Linhagem Sele o superaram os animais da Linhagem Controle. O regime de termina o apresentou efeito significativo para a quase totalidade das características estudadas, com exce o para as características de composi o corporal. N o houve efeito significativo de intera o entre linhagem e termina o. As classes de idade apresentaram efeito significativo para as características peso de abate, peso de carca a quente, peso da gordura renal-pélvica-ingüinal, porcentagem de músculo, gordura e osso.
Características de carca?a e composi??o corporal de touros jovens da ra?a Nelore terminados em diferentes sistemas
Macedo, Marcelo Pereira;Bastos, Joo Francisco Pereira;Bianchini Sobrinho, Evaristo;Resende, Flávio Dutra de;Figueiredo, Leopoldo Andrade de;Rodrigues Neto, Ant?nio José;
Revista Brasileira de Zootecnia , 2001, DOI: 10.1590/S1516-35982001000600031
Abstract: the objective of this work was to evaluate comparatively the carcass traits and body composition of young nellore breed intact male, sons of bulls with differentials positive (selection lineage) or null (control lineage) at weight gain at 378 days of age. data from 92 nellore cattle, with 456.00 kg of slaughter weight, being 51 animals of selection lineage and 41 animals of control lineage. they were raised in cultivated pastures until 18 months of age, when were designated in two finishing systems, to arrange homogeneous groups to weight and filiation. the animals were fed, in individual pens, with ration for gains of 1.0 kg/day. before slaughter, the animals were fasted and weighed, when the slaughter weight was obtained. after carcass storage in cold chamber, the section of 9th-10th-11th ribs was obtained. there were no significant effects of lineage were for neither traits studied, except for the bone percentage, and the animals of selection lineage were superior than the animals of control lineage. the finishing system showed significant effects for all traits studied, except for the body composition. there were no significant effects of interaction between lineage and finishing system. the classes of age showed significant effects for the traits slaughter weight, hot carcass weight, kidney fat weight, muscle, fat and bone percentage.
Substitui??o do milho e farelo de algod?o pelo milheto no concentrado da dieta de novilhos em confinamento
Bergamaschine, Antonio Fernando;Freitas, Rosana Vieira Le?o;Valério Filho, Walter Veriano;Bastos, Joo Francisco Pereira;Mello, Susana Queiroz Santos;Campos, Zeneide Ribeiro;
Revista Brasileira de Zootecnia , 2011, DOI: 10.1590/S1516-35982011000100022
Abstract: the objective of the present study was to identify possible effects of replacing corn and cottonseed meal by pearl millet on digestibility of nutrients in diets and on performance of cattle in feedlots. diets with a 65:35 roughage:concentrate ratios were composed of corn and pearl millet silages as roughage (50:50, based on natural matter) and five levels of pearl millet replacing corn and cottonseed meal (0; 23; 49; 80 and 96% natural matter) in the concentrate. it was used random block designs in both experiments. five replicates were used to evaluate performance and four replicates for evaluating intake and in vivo digestibility. dry matter (dm) intake, expressed in body weight (bw) percentage and g/kg bw0.75 linearly decreased when pearl millet was introduced into the diet, thus 2.91% and 108.5g and, 2.5% and 92.53 g were registered for diet exclusively with corn and pearl millet, respectively. digestibility of dry matter, crude protein, and total carbohydrates were not affected, whereas digestibility of ether extract reduced and fiber digestibility linearly increased without affecting contents of total digestible nutrients. daily body weight gain, dry matter intake and feed conversion were not affected by adition of pearl millet, either, therefore, it is possible to replace corn and cottonseed meal by pearl millet in rations for cattle in feedlot.
Uso de produto à base de enzima e levedura na dieta de bovinos: digestibilidade dos nutrientes e desempenho em confinamento
Queiroz, Ralf Cezar de;Bergamaschine, Ant?nio Fernando;Bastos, Joo Francisco Pereira;Santos, Pedro César dos;Lemos, Guilherme Corbucci;
Revista Brasileira de Zootecnia , 2004, DOI: 10.1590/S1516-35982004000600022
Abstract: the objetive of this work was to evaluate the effect of the addition of different enzyme levels plus yeast in the cattle diet on apparent nutrient digestibility and cattle performance in feedlot. is was used 18 crossbred bulls (taurino x zebuino) of milk dairy origin with average lw of 190±10 kg and age of 12 months and 27 steer of the guzerá breed with lw and age of 325 kg and 27 months. the levels of enzyme plus yeast were zero (control), 5 g of enzyme (e) plus 5 g of yeast (y) and 10 g e plus 5 g y for animal day. all animals received the identical diet with 65% silage (50% corn:50% sorghum) and 35% of concentrate composed of corn (24.6%), cottonseed meal (7.4%), urea (1.2%), mineralized salt (.54%) and limestone (.86%). this diet showed 12.4% cp, 10.1 mj me/kg dm and 41.1% ndf. the enzyme plus yeast did not affected dm intake (3.3% lw or 126.6 g/kg lw.75) and acd of dm (63.3%), cp (68.2%), ee (83.3%), tcho (61.3%), ndf (47.2%), adf (43.8%), and tdn value (62.8%). the adg and dmi decreased of quadratic form and feed:gain ratio worsed linearly, in function of feedlot days. the feeding of enzyme plus yeast for beef cattle did not bring nutritional and performance benefits.
Indu??o hormonal da ovula??o e desmame precoce na fertilidade pós-parto de vacas de corte homozigotas e heterozigotas para o microssatélite BMS3004
Bastos, Guilherme de Medeiros;Gon?alves, Paulo Bayard Dias;Machado, Márcia Silveira Netto;Restle, Joo;Neves, Jairo Pereira;Oliveira, Joo Francisco Coelho de;Farias, Alexandre Morales;Siqueira, Lucas;Faturi, Cristian;
Revista Brasileira de Zootecnia , 2003, DOI: 10.1590/S1516-35982003000500009
Abstract: the aim of this experiment was to compare the efficiency of a hormonal protocol, associated to the temporary weaning for 96 hours, with the definitive weaning at 60 days in beef cows, for the induction of estrus and ovulation. one hundred and eighty-three suckled beef cows were used. the breeds of the cows were charolais (c) and nellore (n) and their crosses. the animals were genotyped as homozygous (hom) and heterozigous (het) for the microsatellite bms3004, that is localized in the same chromossome of the lh b chain gene. the cows were distributed in two groups between 60 and 80 days postpartum (day 0). in the hormonal induction group (hi), the cows (n=87) received (day 0) 250 mg of medroxiprogesteron acetate for 8 days, 2.5 mg of estradiol benzoate (day 1) and 500 ui of ecg (day 7). on day 8, the calves were weaned for 96 hours. in the same day (day 8), the cows (n=96) of the other group were just submitted to early weaning (group ew). twelve hours after weaning, artificial insemination (ai) was done during four days. after this period, they were mated. the first diagnosis of pregnancy (dp) was performed 60 days after the ai period and, the second, 60 days after the end of mating. the estrus rates were higher in cows from hi group than in those of ew group. in the hi group, the cows with body condition 2.5 and 3.0 presented lower pregnancy rates at the 1st dp (29.6 and 46.4%) than in the ew group (56.0 and 72.2%). the rates of pregnancy in cows with body index 65-73 did not differ between the hi and ew groups. the n cows of hi group presented lower pregnancy rate at 1st dp than the f1 (27.7 vs. 64.2%), but was not different than the c cows (40.0%). in the hi group, the pregnancy rate at the 2nd dp was lower in hom cows than in the het ones. the cows in the early definitive weaning group showed to be more efficient than in the hormonal induction group to improve the pregnancy rate.
Medidas de ocorrência: conhecendo a distribui o de agravos, doen as e condi es de saúde em uma popula o
Duquia, Rodrigo Pereira,Bastos, Joo Luiz Dornelles
Scientia Medica , 2007,
Abstract: N o possui resumo
Medidas de tendência central: onde a maior parte dos indivíduos se encontra?
Duquia, Rodrigo Pereira,Bastos, Joo Luiz Dornelles
Scientia Medica , 2006,
Abstract: N o possui resumo
Um dos delineamentos mais empregados em epidemiologia: estudo transversal
Bastos, Joo Luiz Dornelles,Duquia, Rodrigo Pereira
Scientia Medica , 2007,
Abstract: Um dos delineamentos mais empregados na pesquisa epidemiológica consiste no estudo transversal. Barros & Hirakata,(1) em artigo sobre alternativas de análise para estudos deste tipo, consultaram todos os manuscritos publicados nos periódicos International Journal of Epidemiology e Revista de Saúde Pública no ano de 1998 e constataram que 50% deles foram estudos transversais. Assim, identifica-se uma considerável propor o de trabalhos adotando este desenho, o que refor a a necessidade de conhecermos suas principais características, vantagens e desvantagens. O objetivo da presente nota é discorrer brevemente sobre os estudos transversais, fornecendo aos leitores um conjunto básico de informa es, de modo a contribuir para a realiza o de pesquisas semelhantes e a leitura crítica de publica es com estas características metodológicas.
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