Exigências de proteína de animais Nelore puros e cruzados com as raças Angus e Simental

Marcondes, Marcos Inácio; Filho, Sebastião de Campos Valadares; Oliveira, Ivanna Moraes de; Valadares, Rilene Ferreira Diniz; Paulino, Mário Fonseca; Prados, Laura Franco

doi:10.1590/s1516-35982011001000025

Cited by 10 publications

(8 citation statements)

References 15 publications

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Section: Resultscontrasting

confidence: 62%

“…The value obtained is lower than the value reported by Marcondes et al (2011b), i.e., 37.51%; Souza et al (2012b), i.e., 37.04%; AFRC (1993), i.e., 59%; and NRC (2000), i.e., 49.2%, for cattle that weigh more than 300 kg. The efficiency of use of MP for gain is influenced by the quality of the RDP source and the biological value of the microbial protein, which depend on the amino acid composition and quality of the components of the feeds (MARCONDES et al 2011b;SOUZA et al, 2012b). According to Souza et al (2012b), the higher efficiency of use of MP for gain value suggested by NRC (2000) and AFRC (1993) is due to the quality of the food indicated by those committees in the elaboration of feeds, which are different from the ones used in the tropics in addition to the use of anabolic agents (NRC, 2000), which enhance muscle tissue growth.…”

Section: Resultscontrasting

confidence: 62%

“…Most of the beef cattle population in Brazil comprises Zebu breeds, which is why most studies evaluate the nutritional requirements of this species (ALMEIDA et al, 2009;BACKES et al, 2005BACKES et al, , 2010COSTA E SILVA et al, 2012;FREITAS et al, 2006;MARCONDES et al, 2011aMARCONDES et al, , 2011bSOUZA et al, 2012aSOUZA et al, , 2012b. However, male cattle raised in dairy farms are also used for meat production; however, their performance is poorer compared with that of Zebu, and thus, many producers prefer to slaughter them as calves.…”

Section: Introductionmentioning

confidence: 99%

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Energy and protein requirements of crossbred cattle in feedlot

et al. 2016

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The objective of this study is to predict the energy and protein requirements of crossbred dairy cattle in feedlot. The study was conducted at the Unidade Acadêmica de Serra Talhada, Universidade Federal Rural de Pernambuco, Brazil with 30 bulls with a body weight of 339.1 ± 35.4 kg. Five animals were slaughtered at the end of the adaptation period to serve as the reference group; the remainder of the animals was slaughtered after 112 days. The latter group was randomly allocated to receive five treatments: 0, 17, 34, 51 and 68% of concentrate in the feed using a completely randomized design. The dietary intake of the animals that were not given concentrate was restricted to 1.5% of their body weight; these animals composed the group fed for maintenance. The body composition and empty body weight (EBW) were estimated by means of the comparative slaughter method and full dissection of a half-carcass. The results showed that for crossbred dairy bulls in confinement, the net and metabolizable energy requirements were 86.49 and 138 kcal EBW -0.75 day -1 , respectively, and the efficiency of use of metabolizable energy for maintenance and gain were 62.67% and 31.67%, respectively. The net energy (NE g ) and net protein (NP g ) requirements for gain can be estimated using the following equations, respectively: NE g = 0.0392*EBW e PLg = 242,34 × GPCVZ -23,09 × ER, respectivamente. A eficiência do uso da proteína metabolizável para ganho foi de 25,8% enquanto que as exigências de proteína para mantença foram 2,96 g PCVZ -0,75 dia -1 . A proteína degradável no rúmen pode suprir 62,44% das exigências em proteína bruta de bovinos mestiços leiteiros, machos não castrados, em confinamento, com peso corporal de 450 kg e ganho de 1 kg dia -1 . Palavras-chave: Composição corporal. Ganho de peso. Mantença.

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Section: Resultscontrasting

confidence: 62%

Section: Resultscontrasting

confidence: 62%

Section: Introductionmentioning

confidence: 99%

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Energy and protein requirements of crossbred cattle in feedlot

et al. 2016

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“…Nessa edição do BR-CORTE, um banco de dados foi desenvolvido, sendo o mesmo composto por 32 estudos realizados em condições brasileiras de 1991de a 2016de : Galvão (1991, Jorge (1993), , Ferreira (1997), Veras (2000, , , Putrino (2002), , Paulino (2002), Backes (2003), , , Chizzotti (2004), Moraes (2006), , Marcondes (2007), Paixão (2008), , Porto (2009), Machado (2009), Marcondes (2011), Souza (2011, Costa e Silva (2011, Rotta (2012), , Prados (2012), Rodrigues (2014), Costa e Silva (2015), Silva (2015)…”

Section: Banco De Dadosunclassified

Exigências Nutricionais de Zebuínos Puros e Cruzados - BR-CORTE

Filho¹,

Silva²,

Gionbelli³

et al. 2016

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“…Contudo, diferente dos resultados deste trabalho Menezes et al (2014) relataram que ao trabalharem como níveis de suplementação (0; 0,5 e 1% do PV) obtiveram maior rendimento de carcaça para os animais suplementados com o maior nível. Corroborando com os resultados relatados por Marcondes et al (2011) que tiveram rendimentos de carcaças superiores para animais suplementados com 2% do PV em relação aqueles suplementados com 1% do PV.…”

Section: Discussionunclassified

Silagens De Capim-Elefante E Embaúba Aditivada Com Produtos Alternativos Na Amazônia Ocidental

Santos

Gomes

Pinedo

et al. 2019

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Objetivou-se avaliar o padrão fermentativo e a bromatologia da silagem de capim- elefante cultivar Napier com as folhas de Embaúba na proporção de 50:50 aditivada com torta de semente de cupuaçu, cana-de-açúcar e fubá de milho em diferentes níveis. O experimento foi realizado em delineamento inteiramente casualizado, com quatro repetições por tratamento. Foram testados os tratamentos (0%), (5%), (10%) e (15%) dos aditivos citados. O material foi ensilado em mini-silos de tubos de PVC por 45 dias para efetivação do processo fermentativo. Foram avaliados pH, matéria seca (MS), proteína bruta (PB), fibra em detergente neutro e ácido (FDN/FDA), hemicelulose (HEM) e nutrientes digestíveis totais (NDT). O pH da torta de semente de cupuaçu e do fubá de milho estão dentro da amplitude preconizada na literatura. Os aditivos proporcionaram maior percentual de MS e PB em todos os tratamentos, testando estes dentro dos limites considerados aceitáveis para um adequado processo fermentativo. FDN e FDA aumentaram linearmente à medida que aumentou a inclusão de torta de cupuaçu e fubá, porém permaneceram abaixo do limite considerado limitante ao consumo voluntário dos ruminantes e a digestibilidade. Os aditivos adicionados na forragem de capim-elefante com folhas de Embaúba melhoraram o valor nutritivo da silagem.Palavras-chave: composição bromatológica, Cecropia paphytachua, ensilagem, Pennisetum purpureum. ELEPHANT GRASS SILAGE AND EMBAÚBA WITH ADDED ALTERNATIVE PRODUCTS IN THE WESTERN AMAZON ABSTRACT: This study aimed to evaluate the fermentative pattern and the bromatological of the Elephant grass silage cultivar Napier with the Embaúba leaf’s in the proportion of 50:50, added with of cupuassu cake seed, sugarcane and corn meal at different levels. The experiment was carried out in a completely randomized design, with four replications per treatment. The treatments 0%, 5%, 10%) and 15% of the cited additives were tested. The ensiled material was in mini-silos of PVC pipes for 45 days to affect the fermentation process. pH, dry matter (DM), crude protein (CP), neutral detergent fiber and acid (NDF/ FDA), hemicellulose (HEM) and total digestible nutrients (NDT) were evaluated. The pH of the cupuassu and maize meal are within the range recommended in the literature. The additives provided a higher percentage of DM and PB in all treatments, and these were within the limits considered acceptable for an adequate fermentation process. NDF and ADF increased linearly as the inclusion of cupuassu cake and corn meal increased, but remained below the limits considered limiting the voluntary consumption of ruminants and digestibility. The additives added in the elephant grass fodder with Embaúba leaves improved the nutritive value of the silage.Keywords: bromatological composition, Cecropia paphytachua, ensilage, Pennisetum purpureum.

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Exigências de proteína de animais Nelore puros e cruzados com as raças Angus e Simental

Cited by 10 publications

References 15 publications

Energy and protein requirements of crossbred cattle in feedlot

Energy and protein requirements of crossbred cattle in feedlot

Exigências Nutricionais de Zebuínos Puros e Cruzados - BR-CORTE

Silagens De Capim-Elefante E Embaúba Aditivada Com Produtos Alternativos Na Amazônia Ocidental

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