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| Registros recuperados: 32 | |
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| Pinto, Adriana; Passetti, Rodrigo Augusto Cortêz; Guerrero, Ana; Rivaroli, Dayane Cristina; Perotto, Daniel; Prado, Ivanor Nunes do. |
| This study was performed to assess the animal performance of 97 bulls, ½ Purunã vs. ½ Canchim, that were slaughtered at 16 (16M) or 22 (22M) months with three concentrate levels (0.8, 1.2, and 1.6%) of body weight (BW). The initial body weight was lower for the 16M bulls. The final body weight and hot carcass weights were similar between the two slaughter ages. The hot carcass dressing was higher for 22M bulls. The average daily gain was higher for 16M bulls. The feed intake and dry matter feed conversion were similar between 16 and 22M bulls. The carcass length, marbling, and bone percentage were lower for 16M bulls. However, the Longissimus dorsi muscle area was higher for 16M bulls. The leg length, cushion thickness, fat thickness, conformation, colour,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zootecnia; Produção animal; Qualidade de carne bovine; Feed intake; Crossbreeding; Longissimus.. |
| Ano: 2015 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/25116 |
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| Santos,S.A.; Valadares Filho,S.C.; Detmann,E.; Ruas,J.R.M.; Prados,L.F.; Mariz,L.D.S.. |
| The purpose of this study was to evaluate feed intake and develop lactation and weight change curves for Holstein x zebu cows under grazing. Eighteen F1 cows were used, divided into three treatments; 6 were Holstein x Gir (HGI), 6 were Holstein x Guzerat (HGU), and another 6 were Holstein x Nelore (HNE), under the feeding conditions of pasture plus concentrate with 22% of crude protein (CP). To estimate individual feed intake at pasture, 2 markers were used: titanium dioxide to estimate fecal dry matter (DM) excretion, and the indigestible acid detergent fiber (iADF) to estimate individual pasture intake. The Wood (1967) model was used to evaluate milk yield and the parameters were estimated for each genetic group, as follows: HGI =... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crossbreeding; F1; Lactation; Tropical grasses. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352014000300827 |
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| VELOSO,Rogério de Carvalho; DUARTE,Márcio de Souza; SILVA,Fabyano Fonseca e; SARAIVA,Alysson; GUIMARÃES,Simone Eliza Facioni; CHIZZOTTI,Mário Luiz; CAMARGO,Ederson Gomes; LOPES,Paulo Sávio. |
| Abstract We aimed to evaluate the effects of paternal genotypes (Piau, Duroc-based, and Pietrain) and nutritional plans with different digestible lysine contents (Low, Medium, and High) on performance, carcass, and meat quality traits of pigs. Pietrain and Duroc crossbred barrows and gilts were similar in performance and carcass traits and had the greatest values when compared to Piau crossbred pigs. Regarding meat quality, drip loss was greater in pork from Pietrain crossbred barrows and gilts compared to Duroc and Piau crossbred pigs. The High nutritional plan had the greatest daily digestible lysine intake value, followed by the Medium and Low nutritional plans. Most of the performance, carcass, and meat quality traits that were evaluated in barrows and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crossbreeding; Digestible lysine; Duroc; Piau; Pietrain. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019000300538 |
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| SILVA, F. L. R. da; ARAÚJO, A. M. de. |
| Resumo: Avaliou-se a producao media diaria de leite de cabras do grupo genetico tricross da Embrapa Caprinos, durante quatro anos, num total de 680 lactacoes. O rebanho foi mantido em pastagem nativa com suplementacao mineral durante o ano, porem na epoca seca, o rebanho recebeu volumoso de silagem de sorgo, e concentrado a base de milho com farelo de soja. O rebanho tricross foi submetido a tres estacoes de monta por ano. O controle leiteiro foi feito uma vez por semana, de manha e a tarde. O trabalho teve como objetivo determinar as caracteristicas produtivas de leite de cabras Tricross(F1) e suas bimesticas(F2). As matrizes tricross(F2) foram 40% e 23% inferiores as tricross(F1), para a producao total de leite e producao media diaria, respectivamente, e... |
| Tipo: Folhetos |
Palavras-chave: Brasil; Ceará; Hybrid vigour; Crossbreeding; Caprino; Cabra; Melhoramento genético animal; Cruzamento; Produção leiteira; Vigor híbrido; Goats; Genetic improvement; Milk production; Heterosis. |
| Ano: 1999 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/515303 |
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| EUCLIDES FILHO, K.. |
| Entre as grandes mudanças que vem ocorrendo no mundo nos últimos anos destaca-se o estabelecimento de um mercado onde as demandas não são mais estabelecidas por diferenças de renda entre os diversos segmentos da sociedade, mas sim por exigências quando a qualidade de vida e bem-estar, associado a qualidade de produto e baixo custo. Esta transformação no mercado deve-se a onda de globalização que vem varrendo o mundo, e que não so agita a economia, mas modifica padrões e conhecimentos, estabelecendo, com isto, um novo status de cultura global. Neste contexto, todo e qualquer setor produtivo necessita adequar-se para sobreviver. Dentro da cadeia produtiva da carne destaca-se a necessidade de ajustes nos sistemas de produção. Neste particular, o cruzamento... |
| Tipo: Folhetos |
Palavras-chave: Bovino de corte; Melhoramento genético; Brasil; Crossbreeding; Selection; Bos Indicus; Bos Taurus; Cruzamento; Seleção; Beef cattle; Breeding; Brazil. |
| Ano: 1997 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/322461 |
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| de la Barra,R; Martínez,M. E; Carvajal,A. |
| The body shape of an animal population determines ranges of biological functionality and productive use. In sheep, meat productivity is closely related with the body size of the animal. Some sheep breeds are used in terminal crossbreeding to give the lamb favorable dimensional characteristics, but it is necessary to go deeper on the study of the relationships between morphostructure and productive aptitude of these breeds, since discrepancies could be due to the environmental effects or the degree of differentiation between the original pool of different breeds and the local populations. The study aimed to evaluate the morphostructural characters in four sheep breeds in Chile and discuss their relationship with the productive functionality of the body... |
| Tipo: Journal article |
Palavras-chave: Zoometry; Crossbreeding; Sheep. |
| Ano: 2016 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000300024 |
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| Prestes,Alan Miranda; Oliveira,Mauricio Morgado de; Mello,Fernanda Cristina Breda; Rorato,Paulo Roberto Nogara; Lopes,Jader Silva; Feltes,Giovani Luis; Bravo,André Padilha. |
| Abstract: The objective of this work was to identify the most suitable model for the genetic evaluation of post-weaning weight gain in a multibreed Angus-Nelore population. Three models were tested using the Bayesian inference method: traditional animal model (M1), multibreed animal model without (M2) and with segregation (M3). The choice of the best model followed the criteria: number of parameters (Np), deviance information criterion (DIC), conditional predictive ordinate (CPO), and deviance based on Bayes factors. Spearman’s rank correlations were estimated for the top 10, 20, and 30% sires. M1 presented the highest values for all criteria, except for Np, and the lowest direct heritability estimate of 0.15±0.01. The heritability estimates for M2 and M3... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Animal breeding; Crossbreeding; Dominance; Epistatic losses; Genetic parameters. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000102803 |
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| Costa,Patrícia Monteiro; Barbosa,Fabiano Alvim; Alvarenga,Ramon Costa; Guimarães,Sérgio Teixeira; Lampeão,Ângelo André; Winkelströter,Larissa Kretli; Maciel,Isabella Cristina de Faria. |
| Abstract: The objective of this work was to evaluate the performance of crossbred steers post-weaned in an integrated crop-livestock system (ICL) and finished in a feedlot, fed either a high-level concentrate diet or whole corn with no roughage. Weaned calves of two breed groups - ½ Angus × ½ Nellore, and ½ Charolais × ¼ Angus × ¼ Nellore - were allotted in a completely randomized experimental design (CRD). During the rainy season, the ½ Angus × ½ Nellore animals showed a higher performance than the ½ Charolais × ¼ Angus ×¼ Nellore ones, with 0.748 and 0.490 kg average daily gain, respectively. The productivity in the post-weaning period was 926 kg ha-1 body weight in a 11-month period, in the ICL system. Subsequently, the animals were confined and fed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Beef cattle; Crossbreeding; Feed intake; Integrated systems; Intensification.. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000500355 |
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| Petrini,Juliana; Dias,Raphael Antonio Prado; Pertile,Simone Fernanda Nedel; Eler,Joanir Pereira; Ferraz,José Bento Sterman; Mourão,Gerson Barreto. |
| The objective of this work was to assess the degree of multicollinearity and to identify the variables involved in linear dependence relations in additive-dominant models. Data of birth weight (n=141,567), yearling weight (n=58,124), and scrotal circumference (n=20,371) of Montana Tropical composite cattle were used. Diagnosis of multicollinearity was based on the variance inflation factor (VIF) and on the evaluation of the condition indexes and eigenvalues from the correlation matrix among explanatory variables. The first model studied (RM) included the fixed effect of dam age class at calving and the covariates associated to the direct and maternal additive and non-additive effects. The second model (R) included all the effects of the RM model except the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bos taurus x Bos indicus; Animal breeding; Beef cattle; Correlation matrix; Crossbreeding; Variance inflation factor. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012001200010 |
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| Huang,Ai-xia; Li,Jin-jun; Shen,Jun-da; Tao,Zheng-rong; Ren,Jin-dong; Li,Guo-qing; Wang,De-qian; Tian,Yong; Yang,Fu-sheng; Ding,Wei-ping; Wu,Tian-xing; Lu,Li-zhi. |
| We investigated the effects of crossbreeding on slaughter traits and the chemical composition of chicken breast muscle. Trials were conducted using 120 broilers from four lines: Xiao-Shan chicken (XS), Xian-Ju chicken (XJ), Xiao-Shan chicken♂♂ × Xian-Ju chicken♀♀ (Zhenan 1, ZNY1) and Xiao-Shan chicken♂♂ × (Guang-Xi Yellow chicken♂♂×Xian-Ju chicken♀♀) ♀♀ (Zhenan 2, ZNY2). The birds were slaughtered at 120 days of age and the slaughter traits were measured. Breast muscles were sampled to determine chemical composition. The slaughter traits of hybrid chickens were improved. Both hybrid strains had higher intramuscular fat (IMF) and inosine-5'-monophosphate (inosinic acid, IMP). Concentrations of monounsaturated fatty acids (MUFA) in breast muscles from the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amino acid; Chicken; Crossbreeding; Fatty acid; Inosine-5'-monophosphate; Intramuscular fat; Slaughter traits. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000400005 |
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| Registros recuperados: 32 | |
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