7 documents found, page 1 of 1
Reference gene selection for quantitative PCR in liver, skeletal muscle, and je...
Coelho,Tamara Cristina; Chalfun-Junior,Antonio; Barreto,Horllys Gomes; Duarte,Marcio de Souza; Garcia,Bruno de Oliveira; Teixeira,Priscilla DutraABSTRACT The objective of the present study was to evaluate the stability of candidate reference genes and select the genes that can be used for normalizing real-time polymerase chain reaction (PCR) in the liver, skeletal muscle, and jejunum tissues of Nellore or Nellore × Angus steers fed different diets. Fourteen purebred and 14 crossbred steers were used, in which half of the animals of each genetic group re...
Prenatal origins of productivity and quality of beef
Santos,Marta Maria dos; Costa,Thaís Correia; Ramírez-Zamudio,Germán Darío; Nascimento,Karolina Batista; Gionbelli,Mateus Pies; Duarte,Marcio de SouzaABSTRACT The productive traits of beef cattle are orchestrated by their genetics, post-natal environmental conditions, and also by the intrauterine background. Both under- or overnutrition, as specific dietary components, are able to promote persistent effects on the offspring. This occurs because dietary factors act not only affecting the availability of substrates for fetal anabolism and oxidative metabolism,...
Guanidinoacetic acid supplementation on growth performance and molecular mechan...
Valini,Graziela Alves da Cunha; Duarte,Marcio de Souza; Rodrigues,Gustavo de Amorim; Veroneze,Renata; Saraiva,Alysson; Hausman,GaryABSTRACT: The objective with the present study was to evaluate the effect of guanidinoacetic acid (GAA) on the growth performance of nursery piglets as well as a possible molecular mechanism of action on lean mass gain. Seventy-two pigs, weaned at 21 d, weighing 6.80 ± 1.2 kg were distributed in a completely randomized design into one of three dietary treatments (control, control + 1.2 g/kg GAA or control + 2.4...
The optimal number of partial least squares components in genomic selection for...
Silveira,Fernanda Gomes da; Duarte,Darlene Ana Souza; Chaves,Lucas Monteiro; Silva,Fabyano Fonseca e; Filho,Ivan Carvalho; Duarte,Marcio de SouzaABSTRACT: The main application of genomic selection (GS) is the early identification of genetically superior animals for traits difficult-to-measure or lately evaluated, such as meat pH (measured after slaughter). Because the number of markers in GS is generally larger than the number of genotyped animals and these markers are highly correlated owing to linkage disequilibrium, statistical methods based on dimen...
Pattern of tissue deposition, gain and body composition of Nellore, F1 Simmenta...
Oliveira,Ivanna Moraes de; Paulino,Pedro Veiga Rodrigues; Marcondes,Marcos Inácio; Valadares Filho,Sebastião de Campos; Detmann,Edenio; Cavali,JucileneSixty 18-month-old steers (20 Nellore, 20 F1 Simmental × Nellore and 20 F1 Angus × Nellore with average body weight of 265.6±6.4 kg; 325.3±4.7 kg and 324.6±6.0 kg, respectively) were used. The effects of feeding regime and genetic group on physical carcass composition, empty body composition, composition of the gain, as well as the pattern of tissue deposition were evaluated in this trial. The interaction betwe...
Beef quality traits of Nellore, F1 Simmental × Nellore and F1 Angus × Nellore s...
Oliveira,Ivanna Moraes de; Paulino,Pedro Veiga Rodrigues; Marcondes,Marcos Inácio; Valadares Filho,Sebastião de Campos; Cavali,JucileneThis trial was conducted to evaluate some beef quality attributes of Nellore, F1 Simmental × Nellore and F1 Angus × Nellore steers finished on feedlot. The effects of feeding regime and genetic group on shear force, thawing losses, cooking (leak + evaporation) losses, total losses and muscle fiber type, as well as carcass pH and temperature during 24 h of chilling were evaluated. There was a genetic group effec...
Carcass traits of Nellore, F1 Simmental × Nellore and F1 Angus × Nellore steers...
Oliveira,Ivanna Moraes de; Paulino,Pedro Veiga Rodrigues; Valadares Filho,Sebastião de Campos; Detmann,Edenio; Paulino,Mário FonsecaThis trial was conducted to evaluate the quantitative carcass traits of Nellore, F1 Simmental × Nellore and F1 Angus × Nellore steers fed at maintenance level or ad libitum with 1% and 2% of the body weight in concentrate. The animals were allotted to the treatments in a completely randomized experimental design, in a 3 × 3 factorial arrangement. The animals fed the ad libitum diet with more concentrate had gre...