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Níveis de Proteína Bruta para Leitoas dos 30 aos 60 kg Mantidas em Ambiente de Conforto Térmico (21oC)  [cached]
Orlando Uislei Antonio Dias,Oliveira Rita Flávia Miranda de,Donzele Juarez Lopes,Ferreira Aloízio Soares
Revista Brasileira de Zootecnia , 2001,
Abstract: O experimento foi conduzido para avaliar níveis de proteína bruta (PB) para leitoas em crescimento, mantidas em conforto térmico. A temperatura interna da sala manteve-se durante o período experimental em 21,3 ± 0,53°C, a umidade relativa em 70,5 ± 5,11% e o índice de Temperatura de Globo e Umidade (ITGU) calculado no período em 68,7 ± 0,93. Foram utilizadas 40 leitoas mesti as, com peso inicial médio de 29,4 ± 1,42 kg, em delineamento de blocos ao acaso com cinco tratamentos (16, 17, 18, 19 e 20% de PB), quatro repeti es e dois animais por unidade experimental. As ra es experimentais foram isoenergéticas, com 3400 kcal de ED/kg de ra o, e formuladas para satisfazerem às exigências dos animais, exceto em PB. A ra o e a água foram fornecidas à vontade até o final do experimento, quando os animais atingiram peso médio de 60,6 ± 1,76 kg. O nível de PB da ra o influenciou o ganho de peso diário (GPD), que aumentou, e a convers o alimentar (CA), que melhorou linearmente. Apesar do efeito linear dos níveis de PB sobre o GPD e CA, o modelo "Linear Response Plat " (LRP) foi o que melhor se ajustou aos dados, estimando em 18,78 e 19,15%, os níveis de PB a partir do qual o GPD e a CA, permaneceram em um plat . Os consumos diários de proteína e lisina aumentaram linearmente em raz o do nível de PB da ra o, porém n o se observou efeito dos tratamentos sobre os consumos de ra o e de energia digestível diários. Concluiu-se que leitoas em crescimento, mantidas em ambiente de conforto térmico, exigem 19,15% de PB na ra o, correspondendo a um consumo de 343 e 19,08 g/dia de proteína e lisina total, respectivamente.
Níveis de Proteína Bruta para Leitoas dos 30 aos 60 kg Mantidas em Ambiente de Conforto Térmico (21oC)
Orlando, Uislei Antonio Dias;Oliveira, Rita Flávia Miranda de;Donzele, Juarez Lopes;Ferreira, Aloízio Soares;Resende, Wilkson de Oliveira;Freitas, Letícia Silva de;
Revista Brasileira de Zootecnia , 2001, DOI: 10.1590/S1516-35982001000700014
Abstract: this experiment was conducted to evaluate levels of crude protein (cp) for gilts in growing phase, maintained under thermal comfort. the internal temperature at room was kept during the experimental period in 21.3 ± 0.53°c with relative humidity of 70.5 ± 5.11%. the calculated black globe humidity index (bghi) in this period was 68.7 ± 0.93. forty crossbred gilts with average initial weight of 29.4 ± 1.42 kg were used in an experimental design of randomized blocks with five treatments (16, 17, 18, 19 e 20% de cp), four replicates and two animals per experimental unit. the experimental isoenergetics rations with 3,400 kcal of de/kg, were formulated to meet the requirements of animals, except to cp. the rations and water were feeding ad libitum to animals, until the final of experimental period when gilts reached the average weight of 60.6 ± 1.76 kg. the cp level of ration influenced the average daily weight gain (adwg) that increases and the feed:gain (f:g) ratio that improved linearly. in spite of linear effect of cp levels on adwg and f:g ratio the model of "linear response plateau" (lrp) was one that better adjusted to the data estimating respectively in 18.78 and 19.15% the levels of cp occurred a plateau. the daily intakes of protein and lysine increase linearly with crescent level of cp on ration. however it did not observe effect of cp levels on daily intakes of ration and digestible energy. it was concluded that gilts from 30 to 60 kg kept under thermoneutral environment require 19.15% of cp on ration associated with the intakes of 343 e 19.08 g/day of crude protein and lysine, respectively for better performance.
Níveis de proteína bruta para leitoas dos 30 aos 60 kg mantidas em ambiente de alta temperatura (31oC)  [cached]
Orlando Uislei Antonio Dias,Oliveira Rita Flávia Miranda de,Donzele Juarez Lopes,Lopes Darci Clementino
Revista Brasileira de Zootecnia , 2001,
Abstract: O experimento foi conduzido para avaliar níveis de proteína bruta (PB) para leitoas em crescimento, mantidas em ambiente de alta temperatura. A temperatura interna da sala foi mantida em 30,7 ± 0,61°C; a umidade relativa, em 66,4 ± 7,7%; e o índice de temperatura de globo e umidade (ITGU) foi calculado em 81,1 ± 1,36. Foram utilizadas 40 leitoas mesti as, com peso inicial médio de 29,7 ± 1,60 kg, em delineamento de blocos ao acaso com cinco tratamentos (16, 17, 18, 19 e 20% de PB), quatro repeti es e dois animais por unidade experimental. As ra es experimentais isoenergéticas (3400 kcal de ED/kg de ra o) foram formuladas para satisfazer as exigências dos animais, exceto em PB. Ra o e água foram fornecidas à vontade até o final do experimento, quando os animais atingiram peso médio de 60,0 ± 1,93 kg. Os tratamentos n o influenciaram o ganho de peso. Entretanto, a convers o alimentar melhorou de forma quadrática até o nível de 18,26%. Os consumos diários de proteína e lisina aumentaram linearmente em raz o do nível de PB da ra o, porém n o se observou efeito dos tratamentos sobre os consumos de ra o e de energia digestível diários. A taxa de deposi o diária de gordura (TDG) na carca a variou de forma quadrática, reduzindo até o nível de 19,48% de PB, enquanto a de proteína (TDP) aumentou de forma linear. Apesar dos efeitos quadrático e linear dos tratamentos sobre a TDG e a TDP, respectivamente, o modelo "Linear Response Plateau" (LRP) foi o que melhor se ajustou aos dados, estimando-se em 18,38 e 18,12% os níveis de PB, a partir dos quais a TDG e a TDP permaneceram em um plat . Leitoas em crescimento, mantidas em ambiente de alta temperatura, exigem 18,26% de PB na ra o para melhor desempenho e composi o de carca a.
Níveis de proteína bruta para leitoas dos 30 aos 60 kg mantidas em ambiente de alta temperatura (31oC)
Orlando, Uislei Antonio Dias;Oliveira, Rita Flávia Miranda de;Donzele, Juarez Lopes;Lopes, Darci Clementino;Silva, Francisco Carlos de Oliveira;Generoso, Rafaela Antonia Ramos;
Revista Brasileira de Zootecnia , 2001, DOI: 10.1590/S1516-35982001000600022
Abstract: this experiment was conducted to evaluate levels of crude protein (cp) for growing gilts, under high temperature environment. the internal temperature at room was maintained at 30.7 ± 0.61°c, with relative humidity of 66.4 ± 7.7%, and the calculated black globe humidity index (bghi) in period was of 81.1 ± 1.36. forty crossbred gilts, with average initial weight of 29.7 ± 1.60 kg, were allotted to an experimental design of randomized blocks with five treatments (16, 17, 18, 19 and 20% cp), four replicates and two animals per experimental unit. the experimental diets were isoenergetics (3400 kcal of de/kg) and were formulated to meet the animals requirements, except for cp. diet and water were fed ad libitum to animals, until the end of the experimental period, when the gilts reached the average weight of 60.0 ± 1.93 kg. average daily weight gain was not affected by the treatments. however the feed:gain ratio quadraticly improved up to level of 18.26% cp. the protein and lysine intakes increased linearly with dietary cp levels . however the lysine levels of diet did not influence the diet and digestible energy intakes. fat deposition rate (fdr) in carcass quadractly changed and decreased up to 19.48% of cp in diet, while the protein deposition rate (pdr) linearly increased. despite of quadract and linear effects of treatments, respectively, on fdr and pdr, the "linear response plateau" (lrp) model was the one that better fitted to the data and the levels of protein were estimated in 18.38 and 18.12% , the plato point for fdr and pdr. gilts in the growing phase, under heat stress environment, require 18.26% cp in the diet for better performance and carcass composition.
Níveis de proteína bruta e suplementa??o de aminoácidos em dietas para leitoas mantidas em ambiente de alta temperatura dos 60 aos 100 kg
Orlando, Uislei Antonio Dias;Oliveira, Rita Flávia Miranda de;Donzele, Juarez Lopes;Ferreira, Rony Antonio;Vaz, Roberta Gomes Mar?al Vieira;
Revista Brasileira de Zootecnia , 2007, DOI: 10.1590/S1516-35982007000500012
Abstract: this experiment was conduced to determine the level of cp with amino acid supplementation in diets to gilts under high environmental temperature in finishing phase. thirty-five crossbreed gilts (landrace x large white) with an average initial weight of 60.3 kg were allotted in a randomized experimental design with five diets (17.3, 16, 14.7, 13.4, and 12.1% cp) seven replications and one animal by experimental unity. the experimental diets were supplied ad libitum until the end of the experiment when the animals reached the average weight of 100.3 kg. the average temperature inside the room was kept in 30.6oc and the relative humidity in 71%. the black globe humidity index calculated in the period was 81. not effect was observed for the reduction of cp level of the diet on the studied performance characteristics (feed intake, weight gain and feed gain ratio). the carcass characteristics (carcass length; loin eye area; backfat thickness and yield of carcass, lean meat, fat and ham) also were not influenced by the cp reduction in the diets. the cp levels and supplementation of amino acids in the dieta influenced the relative and absolute weight of intestine. smaller values were observed in animals fed diet with smaller level of cp (12.1%). the reduction of cp level in the diet from 17.3 to 12.1% did not harms the performance of gilts maintained in a high environmental temperature from 60 to 100 kg since the diets are properly supplemented with limiting essential amino acids.
Níveis de proteína bruta e suplementa??o de aminoácidos em ra??es para leitoas dos 30 aos 60 kg mantidas em ambiente de alta temperatura
Orlando, Uislei Antonio Dias;Oliveira, Rita Flávia Miranda de;Donzele, Juarez Lopes;Silva, Francisco Carlos de Oliveira;Generoso, Rafaela Antonia Ramos;Siqueira, Jefferson Costa de;
Revista Brasileira de Zootecnia , 2007, DOI: 10.1590/S1516-35982007000700016
Abstract: an experiment was conduced to evaluate crude protein (cp) levels and amino acid supplementation for gilts from 30 to 60 kg maintained in a high environmental temperature (air temperature of 30oc; relative humidity of 66.1% and bghi of 79.7). fifty crossbreed gilts (landrace x large white) with an average initial weight of 30.2 kg were allotted to a randomized experimental design with five treatments and five replications and two animals per experimental unity. the treatment consisted of five levels o cp (19, 18, 17, 16, and 15%) in the ration and of the supplementation with lysine, methionine, tryptophan, threonine and valine to maintain the same protein quality of the ration. the experimental diets were given ad libitum until the end of the experiment when the animals reached the average weight of 60.1 kg. no effect of dietary level of crude protein was observed on pig performance (feed intake, weight gain and feed:gain ratio). neither carcass protein deposition was influenced by reduction of dietary of dietary level of cp. animals fed 18% cp showed the best carcass protein deposition. the protein levels did not influence the absolute and relative weights of the pig organs. dietary cp level can be reduced by 4% (from 19 to 15% of cp) without any effect on performance of gilts from 30 to 60 kg maintained in a high environmental temperature since that the rations be adequately supplemented with all essential limiting amino acids.
Níveis de proteína bruta e suplementa??o de aminoácidos em ra??es para leitoas mantidas em ambiente termoneutro dos 60 aos 100 kg
Orlando, Uislei Antonio Dias;Oliveira, Rita Flávia Miranda de;Donzele, Juarez Lopes;Ferreira, Rony Antonio;Silva, Francisco Carlos de Oliveira;Vaz, Roberta Gomes Mar?al Vieira;Siqueira, Jefferson Costa de;
Revista Brasileira de Zootecnia , 2006, DOI: 10.1590/S1516-35982006000200020
Abstract: a trial was conduced to evaluate decreasing levels of cp with amino acid supplementation on performance of gilts on thermoneutral environment. thirty-five crossbreed gilts (landrace x large white) averaging initial weight of 60.5 kg were allotted to a complete randomized design with five treatments (17.3, 16, 14.7, 13.4 and 12.1% of cp) of seven replications (one animal per experimental unit). the experimental diets were fed ad libitum until the end of the experiment when the animals reached the average weight of 100.6 kg. no effect of decreasing dietary levels of crude protein on performance (feed intake, weight gain and feed gain ratio) was observed. decreasing dietary cp levels did not affect the carcass characteristics (carcass length, loin eye area, backfat thickness and carcass, lean growth, fat and ham yield), but affected the relative and absolute weights of liver and the greatest value was observed in animals fed diet with 16.0% of cp. decreasing dietary cp levels from 17.3 to 12.1% for gilts from 60 to 100 kg on thermoneutral environment did not affect performance, since diets are supplemented with limiting essential amino acids.
Proteína bruta para suínos machos castrados mantidos em ambiente de conforto térmico dos 15 aos 30 kg
Hannas Melissa Izabel,Oliveira Rita Flávia Miranda de,Donzele Juarez Lopes,Ferreira Aloízio Soares
Revista Brasileira de Zootecnia , 2000,
Abstract: RESUMO - Este experimento foi realizado para determinar a exigência de proteína bruta para suínos mesti os (Landrace x Large White), machos, castrados dos 15 aos 30 kg, mantidos em ambiente de conforto térmico. Durante o período experimental, a temperatura da sala manteve-se em 23,1±1,19°C, com umidade relativa de 80,6±4,59% e índice de temperatura do globo e umidade de 69,85±1,38. Foi usado um total de 60 leit es mesti os, machos castrados, com peso médio inicial de 14,8±0,85kg e final de 29,3±2,42 kg. Foi usado delineamento de blocos ao acaso, com cinco tratamentos (17,0; 18,0; 19,0; 20,0; e 21,0% de proteína bruta), seis repeti es e dois animais por unidade experimental. O nível de proteína bruta na ra o influenciou o ganho de peso diário e os consumos de proteína e lisina diários, que aumentaram linearmente. Entretanto, a convers o alimentar diminuiu linearmente. N o houve efeito do nível de proteína sobre os consumos de ra o e energia diários. A taxa de deposi o de gordura n o foi influenciada, enquanto a taxa de deposi o de proteína aumentou quadraticamente até o nível de 20,0% de proteína bruta. Os pesos absolutos do fígado e do intestino e o peso relativo do fígado aumentaram linearmente com o crescente nível de proteína bruta da ra o. A concentra o de uréia plasmática n o foi influenciada pelos níveis de proteína bruta da ra o. Suínos mesti os, machos, castrados de 15 a 30 kg, mantidos em ambiente de conforto térmico exigem 20,0% de proteína bruta na ra o, correspondente a 0,90% de lisina total ou 57 g de proteína/Mcal ED. O nível de uréia no plasma sangüíneo n o foi um parametro adequado para estimar a exigência de proteína bruta.
Exigências de treonina digestível para leitoas mantidas em ambiente termoneutro dos 30 aos 60 kg
Saraiva, Edilson Paes;Oliveira, Rita Flávia Miranda de;Donzele, Juarez Lopes;Ferreira, Aloízio Soares;Vaz, Roberta Gomes Mar?al Vieira;Oliveira, Will Pereira de;
Revista Brasileira de Zootecnia , 2007, DOI: 10.1590/S1516-35982007000800020
Abstract: this study was carried out to evaluate the requirement of digestible threonine in diets of gilts from 30 to 60 kg, maintained thermoneutral environment. seventy crossbreed gilts with an initial weight of de 30.0 ± 0.61 kg were used in a randomized blocks design, with five treatments (levels of digestible threonine), seven replicates and two animals per experimental unity. the treatments corresponded of the levels of 0.50; 0.53; 0.56; 0.60; and 0.63% of digestible threonine. no effect was observed of digestible threonine level on daily weight gain of animals. feed:gain ratio improved in a quadratic way with the digestible threonine level, and the linear response plateau model estimated in 0.52% the level of amino acid, from which the feed conversion did not change. daily feed intake was reduced with the increase of digestible threonine intake. fat deposition linearly reduced, while protein deposition did not change with the increase of digestible threonine. the absolute and relative weight of kidneys and the absolute of intestine increased in a quadratic way with the digestible threonine levels, however, the relative weight of intestine increased in a linear way. it was concluded that the calculated level of 0.52% of digestible threonine, corresponding to a daily intake of 9.18 g and a relation with the digestible lysine of 63% provided better feed:gain ratio for gilts maintained in a thermoneutral environment from 30 to 60 kg.
Proteína bruta para suínos machos castrados mantidos em ambiente de conforto térmico dos 15 aos 30 kg
Hannas, Melissa Izabel;Oliveira, Rita Flávia Miranda de;Donzele, Juarez Lopes;Ferreira, Aloízio Soares;Lopes, Darci Clementino;Soares, José Luiz;Moretti, Andréa Monica;
Revista Brasileira de Zootecnia , 2000, DOI: 10.1590/S1516-35982000000200022
Abstract: abstract - this experiment was carried out to evaluate the requirement of crude protein for initial growing crossbred barrows (landrace x large white), from 15 to 30 kg, maintained in thermal comfort. during the experimental period, the room temperature was maintained at 23.1±1.19°c, with relative humidity at 80.6±4.59% and black globe index humidity at 69.8±1.38. sixty crossbred barrows with initial average weight of 14.8±0.85 kg and final weight of 29.3±2.4 2kg, were used. a completely randomized blocks design, with five treatments (17.0, 18.0, 19.0, 20.0 and 21.0% of crude protein), six replicates and two animal per experimental unit was used. the dietary crude protein level influenced the daily weight gain and protein and lysine daily intakes that linearly increased. however, the feed:gain ratio linearly decreased. there was no effect of crude protein level on diet and digestible energy daily intakes. the fat deposition rate was not affected, while the protein deposition rate in a quadratic way increased up to the crude protein level of 20.0%. the absolute and relative weight of liver linearly increased as dietary crude protein level increased. the urea plasma concentration was not affected by the dietary crude protein level. crossbred barrows pigs, from 15 to 30 kg, maintained under thermal comfort, require 20.0% of dietary crude protein, corresponding to 0.901% of total lysine or 57 g of protein/mcal de. the plasma urea concentration did not constitute to be an adequate parameter to estimate the crude protein requirement.
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