Mário Luiz Martinez

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The imprints of domestication and breed development on the genomes of livestock likely differ from those of companion animals. A deep draft sequence assembly of shotgun reads from a single Hereford female and comparative sequences sampled from six additional breeds were used to develop probes to interrogate 37,470 single-nucleotide polymorphisms (SNPs) in(More)
F1 offspring of the African cichlid Pseudocrenilabrus multicolor victoriae Seegers, 1990 from swamp (low oxygen) and lake (high oxygen) origin were raised under normoxia and submitted to hypoxia acclimation (0.8 ± 0.4 mg L–1) and normoxia acclimation (7.4 ± 0.3 mg L–1) for 4 weeks. Haematocrit and lactate dehydrogenase (LDH) specific activities in the(More)
Bovine leukocyte adhesion deficiency (BLAD) is a disease known to affect the Holstein cattle breed throughout the world. Eighty-eight Holstein dairy cows and 88 Gir dairy bulls were genotyped by PCR for the CD18 BLAD alelle. The frequency of the BLAD mutant allele and the BLAD-carrier prevalence in Brazilian Holstein cows were 2.8 and 5.7%, respectively. No(More)
Ribavirin, either free in aqueous solution or incorporated into liposomes, was evaluated in 50 specific-pathogen-free kittens after experimental challenge exposure with feline infectious peritonitis virus (FIPV). Ribavirin was administered daily for 10 to 14 days at 16.5 mg kg-1 bodyweight given per os, intramuscularly or intravenously beginning 18 hours(More)
  • Keiko Kusamura de Mattos, Silvia Nassif Del Lama, Mario Luiz Martinez, Ary Ferreira Freitas
  • 2004
The objective of this study was to obtain genetic marker information in the Gyr breed by analyzing bGH and Pit-1 gene polymorphisms and to verify their association with milk production traits. One sample including 40 Gyr bulls were genotyped at two bGH gene restriction sites (bGHAluI and bGH-MspI) and at one restriction site in the Pit-1 gene (Pit-1 HinfI).(More)
The effect of the bovine major histocompatibility complex (BoLA) locus on animal health may be due to a direct action of its alleles on immune functions, whereas its indirect effect on production traits might be explained by the better general health conditions of more productive animals. In the present study, the BoLA-DRB3 gene was investigated in 1058(More)
A simulation study was carried out to investigate the influence of family selection and selective genotyping within selected families on the power and bias of estimation of genetic parameters in an outbred population with a halfsib family structure. Marker genotypes were determined only for sires that had offspring in the high and low phenotypic tails of(More)
Segregation between a genetic marker and a locus influencing a quantitative trait in a well delineated population is the basis for success in mapping quantitative trait loci (QTL). To detect bovine chromosome 5 (BTA5) birth weight QTL we genotyped 294 F2 Gyr (Bos indicus) x Holstein (Bos taurus) crossbreed cattle for five microsatellite markers. A linkage(More)
Four cattle breeds (Gyr, Nellore, Guzerat and Holstein) were analyzed by amplification of genomic DNA using microsatellite loci to evaluate the genetic diversity within and among them. DNA samples of 18 animals from each breed were collected to access the genetic content of them. Allele frequencies were calculated and used to generate a Nei’s genetic(More)
An interval mapping procedure based on the random model approach was applied to investigate its appropriateness and robustness for QTL mapping in populations with prevailing half-sib family structures. Under a random model, QTL location and variance components were estimated using maximum likelihood techniques. The estimation of parameters was based on the(More)