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Search Results: 1 - 10 of 200670 matches for " Oliveira Alexandre Luiz Siqueira de "
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Digestible lysine requirements for barrows with high genetic potential for lean Exigência de lisina digestível para suínos machos castrados, dos 30 aos 60 kg, de alto potencial genético para deposi o de carne magra na carca a
Alexandre Luiz Siqueira de Oliveira,Juarez Lopes Donzele,Márvio Lob?o Teixeira de Abreu,Francisco Carlos Oliveira Silva
Revista Brasileira de Saúde e Produ??o Animal , 2009,
Abstract: Fifty barrows with high genetic potential for lean gain in the carcass and initial body weight of 29.9 1.57 kg were used to evaluate the effect of feeding different lysine levels on performance and carcass protein deposition rate. A randomized block experimental design, with five treatments, five replicates and two animals per replicate was used. Treatments corresponded to five digestible lysine levels (0.70, 0.80, 0.90, 1.00, and 1.10%) with variable proportions of corn and soybean meal. Animals were kept in the experiment until they reached the final body weight of 60.5 1.74 kg. Linear (P<0.01) increasing effect was observed for the daily weight gain (DWG), but the linear response plateau model was that better fitted to the DWG data, that stabilized in a plateau starting from the level of 1.02% of digestible lysine. Significant linear effects were observed for the feed conversion, daily lysine intake and daily protein deposition by increasing dietary lysine levels but no diet effect was found for the daily feed intake. Digestible lysine level of 1.02%, corresponding to a digestible lysine intake of 19.50g/day, provides the best results of performance and protein deposition in barrows with high genetic potential for lean meat deposition in the carcass in the phase from 30 to 60 kg. Foram utilizados 50 suínos machos castrados de alto potencial genético para deposi o de carne magra na carca a e peso inicial de 29,9 1,57 kg, para avaliar diferentes níveis de lisina sobre o desempenho e as características de carca a. Foi usado delineamento de blocos ao acaso, com cinco tratamentos, cinco repeti es e dois animais por repeti o. Os tratamentos consistiram de cinco níveis de lisina digestível (0,70; 0,80; 0,90; 1,00 e 1,10%), obtidos variando-se a propor o de milho e farelo de soja nas ra es. Os animais permaneceram no experimento até atingirem o peso final de 60,5 1,74 kg. Os níveis de lisina influenciaram de forma linear (P<0,01) crescente o ganho de peso diário (GPD), mas o modelo “Linear Response Plateau” (LRP) foi o que melhor se ajustou aos dados do GPD, estimando em 1,02% o nível a partir do qual ocorreu um plat . A convers o alimentar, o consumo de lisina diário e a deposi o de proteína diária aumentaram de forma linear em raz o dos níveis de lisina da ra o, que, no entanto, n o influenciaram o consumo de ra o diário. Concluiu-se que o nível de 1,02% de lisina digestível, correspondente a um consumo de 19,50 g/dia de lisina digestível (0,29%/Mcal de ED), proporciona os melhores resultados de desempenho e deposi o protéica em suínos mac
Lisina em ra es para suínos machos castrados selecionados para deposi o de carne magra na carca a dos 110 aos 125 kg
Oliveira Alexandre Luiz Siqueira de,Donzele Juarez Lopes,Oliveira Rita Flávia Miranda de,Ferreira Aloízio Soares
Revista Brasileira de Zootecnia , 2003,
Abstract:
Lisina em ra es para suínos machos castrados selecionados para deposi o de carne magra na carca a dos 95 aos 110 kg
Oliveira Alexandre Luiz Siqueira de,Donzele Juarez Lopes,Oliveira Rita Flávia Miranda de,Lopes Darci Clementino
Revista Brasileira de Zootecnia , 2003,
Abstract: Foram utilizados 60 suínos machos castrados, provenientes de cruzamento entre híbridos comerciais, com peso inicial médio de 95,7 ± 0,8 kg e final de 109,8 ± 1,1 kg para avaliar diferentes níveis de lisina sobre o desempenho e as características de carca a. Foi usado o delineamento de blocos ao acaso, com cinco tratamentos, seis repeti es e dois animais por repeti o. Os tratamentos corresponderam a uma ra o basal com 13,7% de proteína bruta, 3367 kcal de ED/kg e suplementada com cinco níveis de L-lisina-HCl, resultando em ra es com 0,50; 0,60; 0,70; 0,80 e 0,90% de lisina total. O consumo de ra o diário reduziu de forma linear. Entretanto, ficou caracterizada maior ingest o de lisina com o aumento da concentra o dietética do aminoácido. Verificou-se efeito quadrático do nível de lisina sobre a convers o alimentar, que melhorou até o nível de 0,76% de lisina, e sobre a convers o alimentar em músculo, que reduziu de forma linear. No entanto, os dados ajustados pelo modelo "Linear Response Plateau" indicaram o nível de 0,79% para a melhor convers o alimentar em músculo. O ganho de peso, comprimento de carca a, espessura de toucinho, rendimento de pernil, rendimento de carne magra e a área de olho de lombo n o foram influenciados pelos tratamentos. Para o genótipo estudado, o nível de 0,76% de lisina total na ra o foi o indicado para machos castrados, dos 95 aos 110 kg, correspondendo à ingest o diária estimada de 23,8 g de lisina.
Níveis de lisina digestível em ra??es, utilizando-se o conceito de proteína ideal, para suínos machos castrados de alto potencial genético, dos 30 aos 60 kg
Abreu, Márvio Lob?o Teixeira de;Donzele, Juarez Lopes;Oliveira, Rita Flávia Miranda de;Oliveira, Alexandre Luiz Siqueira de;Haese, Douglas;Pereira, Adriana Aparecida;
Revista Brasileira de Zootecnia , 2007, DOI: 10.1590/S1516-35982007000100008
Abstract: the effect of increasing dietary digestible lysine levels, based on the ideal protein concept, on performance and carcass characteristics of forty barrows with high genetic potential for lean gain averaging initial and final body weights of 30.02 ± 1.38 kg and 60.44 ± 1.81 kg, respectively, was evaluated in this experiment. the animals were assigned to a randomized blocks design, with four treatments, five replicates and two animals per experimental unit. the treatments consisted of a basal diet (18.08% of cp and 3,250 kcal of me/kg) supplemented with increasing levels of hcl-l-lysine (0.80, 0.90, 1.00, and 1.10% of digestible lysine). the diets were supplemented with constant synthetic amino acids:lysine ratios based on the true digestibility. no treatment effects on feed intake, daily weight gain and plasma urea concentration were observed. feed:gain ratio and digestible lysine intake increased linearly as the dietary digestible lysine levels increased. no significant treatment effects on percentages of water, protein and fat and carcass fat deposition were observed. it was observed increasing linear effect of treatments on carcass protein deposition. the 1.10% digestible lysine level, that corresponds to a digestible lysine intake of 21.94 g/day (3.43 g of lys/mcal of me), resulted in the best performance and carcass characteristics of barrows with high genetic potential from 30 to 60 kg.
Lisina em ra??es para suínos machos castrados selecionados para deposi??o de carne magra na carca?a dos 110 aos 125 kg
Oliveira, Alexandre Luiz Siqueira de;Donzele, Juarez Lopes;Oliveira, Rita Flávia Miranda de;Ferreira, Aloízio Soares;Moita, Antonio Marcos Souto;Generoso, Rafaela Ant?nia Ramos;
Revista Brasileira de Zootecnia , 2003, DOI: 10.1590/S1516-35982003000100019
Abstract: fourty-eight barrows proceeding from crossing between commercial hybrids were used in a study to evaluate the different lysine levels on the performance and the carcass characteristics. the swines average initial and final weight was 110.1 ± 0.72 kg and 125.3 ± 1.23 kg, respectively. the animals were distributed in an experimental design of randomized blocks with four treatments, six replicates and two animals per replicate. the treatments corresponded to a basal diet with 13.7% of crude protein and 3367 kcal de/kg supplemented with four levels of l-lysine-hcl resulting in diets with 0.50, 0.60, 0.70 e 0.80% of total lysine. the lysine levels influenced the feed:gain ratio and the muscle efficiency conversion that were reduced by linear form. the daily lysine intake increased with the elevation of diet lysine levels. there was no effect of the treatments on weight gain, carcass characteristics, carcass yield, lean yield, fat yield, and ham yield. for the studied genotype it was concluded that barrows from 110 to 125 kg require 0.80% of total lysine corresponding to a daily lysine intake of 23.9 g.
Exigência de lisina digestível para suínos machos castrados de alto potencial genético para deposi??o de carne magra na carca?a dos 15 aos 30 kg
Oliveira, Alexandre Luiz Siqueira de;Donzele, Juarez Lopes;Oliveira, Rita Flávia Miranda de;Abreu, Márvio Lob?o Teixeira de;Ferreira, Aloízio Soares;Silva, Francisco Carlos de Oliveira;Haese, Douglas;
Revista Brasileira de Zootecnia , 2006, DOI: 10.1590/S1516-35982006000800020
Abstract: fifty barrows with high genetic potential for lean gain averaging initial body weight (bw) of 15.4 ± 1.02 kg were used to determine the digestible lysine requirements, considering performance and carcass protein deposition rate. the experiment was analyzed as a complete block design with five treatments, five replicates and two animals per replicate. treatments consisted of five digestible lysine levels (0.80, 0.90, 1.00, 1.10, and 1.20%) obtained with different dietary amounts of corn and soybean meal. animals were kept in the experiment until they reached final bw of 30.0 ± 1.93 kg. it was observed quadratic effect of treatments on daily weight gain, that increased until the 1.10% estimated level. linear effect of dietary digestible lysine levels on feed:gain, protein deposition and daily lysine intake was observed. no treatment effect on daily feed intake was noticed. barrows with high genetic potential for lean gain in the carcass from 15 to 30 kg require 1.10% of dietary digestible lysine that is correspondent to a 12.05 g/day digestible lysine intake.
Lisina em ra??es para suínos machos castrados selecionados para deposi??o de carne magra na carca?a dos 95 aos 110 kg
Oliveira, Alexandre Luiz Siqueira de;Donzele, Juarez Lopes;Oliveira, Rita Flávia Miranda de;Lopes, Darci Clementino;Moita, Antonio Marcos Souto;Silva, Francisco Carlos de Oliveira;Freitas, Letícia Silva de;
Revista Brasileira de Zootecnia , 2003, DOI: 10.1590/S1516-35982003000200012
Abstract: sixty barrows from crossing between commercial hybrids with an average initial weight of 95.7 ± 0.80 kg and an average final weight of 109.8 ± 1.13 kg were used to evaluate different dietary lysine levels on performance and on carcass characteristics. the experimental design used was a randomized blocks with five treatments, six replicates and two animals per replicate. the treatments corresponded to a basal diet with 13.7% of crude protein, 3367 kcal de/kg supplemented with five l-lysine-hcl levels, resulting in diets with 0.50; 0.60; 0.70; 0.80 and 0.90% of total lysine. the daily feed intake reduced by linear way with the increase of lysine level in diet. however, it was showed highest lysine consumption with increase of dietary aminoacid concentration. it was verified quadratic effect of treatments on the feed:gain ratio which improved until the level of 0.76% of lysine level and on feed:lean gain that reduced by linear way. however the adjusted data by linear response plateau indicated the level of 0.79% to the best feed:lean gain. the weight gain, carcass lenght, backfat thickness, ham yield, lean growth yield and loin eye area were not influenced by treatments. for the genotype studied, it was concluded that barrows from 95 to 110 kg require 0.76% of total lysine in diet, corresponding to a daily lysine intake of 23.8 g.
Níveis de lisina digestível em ra??es, utilizando-se o conceito de proteína ideal, para suínos machos castrados de alto potencial genético para deposi??o de carne magra na carca?a dos 60 aos 95 kg
Abreu, Márvio Lob?o Teixeira de;Donzele, Juarez Lopes;Oliveira, Rita Flávia Miranda de;Oliveira, Alexandre Luiz Siqueira de;Santos, Fabrício de Almeida;Pereira, Adriana Aparecida;
Revista Brasileira de Zootecnia , 2007, DOI: 10.1590/S1516-35982007000100007
Abstract: forty barrows with high genetic potential for lean gain in the carcass averaging initial and final body weights of 60.43 ± 1.56 kg and 96.66 ± 3.22 kg, respectively, were used to evaluate the effect of dietary digestible lysine levels based on the ideal protein concept, on performance and carcasss characteristics. the animals were assigned to a randomized blocks design, with four treatments, five replicates and two animals per experimental unit. the treatments consisted of a basal diet formulated to contain 16.48% of cp, that was supplemented with increasing levels of hcl-l-lysine (0.70, 0.80, 0.90, and 1.00% of digestible lysine). the diets were supplemented with constant synthetic amino acids: lysine ratios based on the true digestibility. no treatment effect on feed intake was observed. it was observed quadratic treatment effects on daily weight gain and feed:gain ratio, that increased up to the estimated levels of 0.87 and 0.93% of digestible lysine, respectively, and also on plasma urea concentration, that decreased up to the estimated level of 0.83% of digestible lysine. linear increasing treatment effect on daily lysine intake was observed, but no treatment effect on carcass length by brazilian method, longissimus dorsi muscle area, fat depth (10th rib), and yields of lean meat, fat, ham, and loin was observed. carcass yield decreased as the dietary lysine levels increased. it was observed quadratic treatment effect on muscle feed:gain ratio, that increased up to the level of 0.94% of digestible lysine. the 0.94% true digestible lysine level, that corresponds to a digestible lysine intake of 26.22 g/day (2.83 g of lys/mcal of me), resulted in better performance and carcass characteristics of barrows from 60 to 95 kg.
Determina??o do valor nutritivo de alimentos energéticos e protéicos utilizados em ra??es para c?es adultos
Cavalari, Ana Paula de Melo;Donzele, Juarez Lopes;Viana, José Ant?nio;Abreu, Márvio Lob?o Teixeira de;Oliveira, Alexandre Luiz Siqueira de;Freitas, Letícia Silva de;Pereira, Adriana Aparecida;Carciofi, Aulus Cavalieri;
Revista Brasileira de Zootecnia , 2006, DOI: 10.1590/S1516-35982006000700015
Abstract: two trials were conducted to evaluate the apparent digestibility of ge, dm and cp in energy and high protein feedstuffs for adult dogs. four adult mongrel dogs (two males and two females) averaging of 13.1 ± 2.0 kg were used in both trials, to evaluate each feedstuff. the animals were fed the same amount of food per metabolic weight. the nutritive value of energy feedstuffs was evaluated in the trial 1. in the trial 2, the digestibility coefficients of protein feedstuffs were evaluated. the digestibility coefficients of ge in extruded corn (ec), gelatinized corn (gc), coconut oil, and soybean oil, in two levels of inclusion (5%-os1 and 12%-os2) and swine fat were respectively of 85.1, 84.4, 92.5, 92.1, 96.2, and 98.6%. the digestibility coefficients of dm and cp of ec and gc were, respectively, of 84.2 and 65.3 and 84.5 and 65.0%. the digestibility coefficients of extruded whole soybean, meat meal, extruded meat meal, poultry by-product meal, extruded poultry by-product meal, extruded fish meal, and extruded feather meal were, respectively, of 80.0, 73.3, 80.7, 87.6, 91.2, 91.1, and 79.8% for ge, of 80.0, 68.4, 87.8, 86.7, 88.1, 85.2, and 76.0 for dm and of 83.7, 74.7, 82.3, 88.0, 88.9, 91.9, and 82.3% for cp.
Embryo development and follicular status of Toggenburg does fed urea diet
Amorim, Lincoln da Silva;Torres, Ciro Alexandre Alves;Siqueira, Luiz Gustavo Bruno;Fonseca, Jeferson Ferreira da;Guimar?es, José Domingos;Carvalho, Giovanni Ribeiro de;Alves, Nadja Gomes;Oliveira, Margarida Maria Nascimento Figueiredo de;
Revista Brasileira de Zootecnia , 2011, DOI: 10.1590/S1516-35982011000200007
Abstract: the effects of feeding urea on embryo production, quality and developmental stages and follicular status at the beginning of a superovulatory treatment of toggenburg does fed urea diet were investigated in this study. eighteen females were randomly allocated to receive diets with: no urea (control, n=8), and 2.4% urea dietary dry matter (n=10) udm. the embryo recovery was performed at day 7 or 8 of estrus cycle by transcervical technique and classified according to quality and developmental stage. the follicular status was determined by transrectal ultrasonography at the first day of fsh injection. the number and quality of embryos were not affected by dietary urea concentration. embryos from does treated with 2.4% udm were recovered at advanced stage. urea concentration (2.4%) decreases the number of follicles with less than 5 mm diameter. this follicle class is positively correlated to the number of recovered embryos and to the number and percentage of excellent and good embryos.
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