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| Fernandes,André Rabelo; Faro,Lenira El; Vercesi Filho,Anibal Eugênio; Machado,Carlos Henrique Cavallari; Barbero,Leandro Martins; Bittar,Eustáquio Resende; Igarasi,Mauricio Scoton. |
| ABSTRACT The objective of this study was to analyze the genetic evolution of milk production, udder morphology, and animal behavior of Gir dairy cattle. Data were obtained on the predicted breeding values for milk yield of 60,226 cows born from 1968 to 2015 and standardized predicted breeding values for udder conformation and milking behavior of 7,635 cows born from 1987 to 2015. The influence of tested bulls on genetic trends was discussed, with special focus on the period after 1993, the year when the predicted breeding values of the first group of tested bulls were released. The traits of interest were 305-d milk yield, fore udder attachment, rear udder height, rear udder width, teat length, teat thickness, ease of milking, and reactivity. Significant... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Linear traits; Mammary system; Reactivity; Teat morphology; Udder attachment. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100304 |
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| Santos,Alexandre Martins Costa; Oliveira,Jamil Silvano de; Bittar,Eustáquio Resende; Silva,Anderson Lourenço da; Guia,Marcos Luiz dos Mares; Bemquerer,Marcelo Porto; Santoro,Marcelo Matos. |
| The purpose of this work was to improve the separation and yield of pure β- and α-trypsin isoforms by ion-exchange chromatography and to characterize some physical-chemical properties of these isoforms. Purification of trypsin isoforms was performed by ion-exchange chromatography in 0.1 mol/L tris-HC buffer, pH 7.10 at 4ºC. The sample loading, salt concentration, flow rate and pH of mobile phase were varied to determine their effects on the resolution of the separation. The resolution was optimized mainly between β- and α-trypsin. Pure isoforms were obtained by chromatographying 100 mg of commercial trypsin during seven days, yielding 51 mg of high purity β-trypsin and 13 mg of α-trypsin partially pure, with small amounts of contaminating of ψ-trypsin.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Trypsin isoforms; Resolution; Ion-exchange chromatography; Purification; Specific activity; Mass spectrometry. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000400009 |
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| Paneto,João Cláudio do Carmo; Bittar,Eustáquio Resende; Barbosa,Eugênio Faria; Rocha,Carina Diniz; Val,José Eduardo do; Ferraudo,Antônio Sergio; Lôbo,Raysildo Barbosa. |
| Este trabalho teve por objetivo estudar as causas de variação nos preços de bovinos da raça nelore pertencentes a rebanhos de seleção, os quais foram comercializados em leilões, para verificar as influências das avaliações genéticas e dos julgamentos de exterior sobre esses preços. Para tanto, foram computados os preços de venda de 426 bovinos da referida raça em 12 leilões ocorridos em diversas localidades brasileiras (regiões Centro-Oeste, Norte e Sudeste), entre os anos de 2002 e 2005. O valor médio foi de R$ 3.325,49, sendo o mínimo de R$ 1.400,00 e o máximo de R$ 10.500,00. Esses dados foram digitados juntamente com outras informações que eram apresentadas nos catálogos dos leilões. As informações registradas incluíram o sexo de cada animal, o nome do... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bovinocultura de corte; Preços; Leilões; DEP; Julgamento. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782009000100033 |
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