Research Article

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The Staphylococcus aureus is the most common isolated microorganism in ruminant animal species diagnostic with clinical or subclinical mastitis. Dairy herds with these diseases can transfer S. aureus into the milk supply, which can lead to food poisoning in humans. The objective of this study was to evaluate the profile of antimicrobial susceptibility, the presence of femA gene, the genetic ... more

A.R.E.O. Xavier; A.C. Almeida; C.N. Souza; L.M.V. Silva; A.X.A. Ruas; D.A. Sanglard; A.F.M. Júnior; A.M.E. Oliveira; M.A.S. Xavier
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In order to evaluate the milk yield, milk quality, and health of dairy cows fed a high-concentrate (HC) diet, eight lactating Holstein dairy cattle were randomly assigned to HC or low-concentrate (LC) diet groups and fed for 50 days, and the auto-control studying before and after treatment with the two diets was used. During the experiment, plasma and milk samples were collected and measured. ... more

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Animals; Cattle; Female; Gene expression; In Vitro Techniques; Mammary Glands, Animal; Mastitis, Bovine; Milk; Models, Animal; Perfusion; Real-time polymerase chain reaction; Ubiquitin

Intramammary infections are one of the main causes of productivity loss in dairy cows. To better understand the immune system response and to avoid the use of live animals, we validated the use of isolated bovine udder as an ex situ model. Six mammary glands were collected from cows ready for culling. Three udders were perfused with Tyrode's solution and three were not-perfused. During six ... more

I.S.B. Pinto; I. Fonseca; H.M. Brandão; J.C. Gern; A.S. Guimarães; W.A. Carvalho; M.A.V.P. Brito; L.F. Viccini; M.F. Martins
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Agriculture; Animals; Brazil; Breeding; Cattle; Female; Genetic variation; male; Population Density

The Red Sindhi cattle breed was imported to Brazil in small numbers. Nowadays, the herds of this breed are distributed in the Northeast, Southeast and Midwest regions of the country. In this study, DNA samples of animals originating from 15 herds in the Northeast and Southeast regions have been analyzed to obtain the ancestry proportions, and to gain a better understanding of the current ... more

J.C.C. Panetto; M.V.G.B. Silva; R.M.H. Leite; M.A. Machado; F.A.T. Bruneli; D.R.L. Reis; M.G.C.D. Peixoto; R.S. Verneque
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Animals; Base Sequence; Cattle; Female; Fertility; Genome; male; Polymorphism, Single Nucleotide; Pregnancy; Puberty; RNA; Selection, Genetic; Sequence Analysis, RNA; Sexual Maturation

Fertility traits, such as heifer pregnancy, are economically important in cattle production systems, and are therefore, used in genetic selection programs. The aim of this study was to identify single nucleotide polymorphisms (SNPs) using RNA-sequencing (RNA-Seq) data from ovary, uterus, endometrium, pituitary gland, hypothalamus, liver, longissimus dorsi muscle, and adipose tissue in 62 ... more

M.M. Dias; A. Cánovas; C. Mantilla-Rojas; D.G. Riley; P. Luna-Nevarez; S.J. Coleman; S.E. Speidel; R.M. Enns; A. Islas-Trejo; J.F. Medrano; S.S. Moore; M.R.S. Fortes; L.T. Nguyen; B. Venus; I.S.D.P. Diaz; F.R.P. Souza; L.F.S. Fonseca; F. Baldi; L.G. Albuquerque; M.G. Thomas; H.N. Oliveira
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Animals; Bayes Theorem; Body weight; Cattle; Female; male; maternal inheritance; Quantitative Trait, Heritable; Selective breeding

This study was carried out to investigate (co)variance components and genetic parameters for growth traits in beef cattle using a multi-trait model by Bayesian methods. Genetic and residual (co)variances and parameters were estimated for weights at standard ages of 120 (W120), 210 (W210), 365 (W365), and 450 days (W450), and for pre- and post-weaning daily weight gain (preWWG and postWWG) in ... more

F.B. Lopes; J.L. Ferreira; R.B. Lobo; G.J.M. Rosa
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Animals; Chromosomes; Female; Genotype; Hybridization, Genetic; Karyotype; Liver; male; Microsatellite Repeats; Polymorphism, Genetic; Quantitative Trait, Heritable; Transcriptome; Turtles

Chinese soft-shelled turtle Pelodiscus sinensis has been an important aquaculture species in Southeast Asian countries. To breed a new variety of soft-shelled turtle with excellent properties and to evaluate the effect of hybridization of two turtle strains with a highly different trait phenotype, inheritance, microsatellite loci, and transcriptome analysis were studied in the hybrid turtles ... more

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The objective of the present study was to investigate single nucleotide polymorphisms (SNPs) located in three candidate genes previously reported to have effects on fertility and milk production traits in a population of 123 Holstein cows. The milk production traits evaluated included lifetime averages of milk yield, protein concentration, and fat concentration. Fertility traits ... more

R. Hill; A. Canal; K. Bondioli; R. Morell; M.D. Garcia; R. Hill; A. Canal; K. Bondioli; R. Morell; M.D. Garcia; R. Hill; A. Canal; K. Bondioli; R. Morell; M.D. Garcia
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Hurood cheese (HC) and Jueke (Jk) are 2 traditional fermented dairy products produced from raw milk (RM) in the Inner Mongolia region of China. They have a long history of production and consumption. The microbial compositions of RM, HC, and Jk vary greatly, and are influenced by their geographical origins and unique processing methods. In this study, 2 batches of RM, HC, and Jk samples were ... more

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