Ciro Moraes Barros

• Abstract

  The difficulty to detect estrus in zebu (Bos taurus indicus) and buffalos (Bubalus bubalis) has limited the use of artificial insemination in these species. One way to solve this problem is to develop hormonal treatments capable of synchronizing ovulation and allow fixed time artificial insemination, i.e, artificial insemination without need for estrus detection. The purpose of the presen…

  Control of follicular development and ovulation for artifical insemination, superovulation and fixed-time transfer of embryos, AP.TEM
• Resistance of bos indicus to jeat shock, compared to crossbred or bos taurus, at early stages of in vitro embruo development., AR.EXT
• A low cost protocol for synchronizing ovulation in beef cows, which uses estradiol benzoate and prostaglandin., AR.EXT

• Abstract

  Numerous differences in reproductive physiology are known among animals of Zebu (Bos indicus) and European breeds (Bos taurus) such as: the age of puberty, duration of estrus, number of subordinate follicles and the measurement of the dominant follicle at deviation, the ovulatory follicle and the corpus luteum. Reports indicate that female B. indicus cattle have a higher number of follicl…

  Influence of breed (Nellore and Angus) and follicular population on the profile of genes differentially expressed in bovine oviduct, BP.MS

• Abstract

  The wide use of biotechnologies of reproduction provides better use of genetically superior animals, reducing the gap between generations and improving the genetics of their offspring. However, there are indications that follicular population, is associated with female fertility and may be also associated with hormone profiles and expression of genes involved in the follicular recruitment…

  RELATIONSHIP OF ANTI-MULLERIAN AND TESTOSTERONE CONCENTRATION WITH FOLLICULAR POPULATION, FERTILITY AND SUPEROVULATORY RESPONSE IN BOVINE FEMALES., BP.MS

• Abstract

  The folicular development in bovines happens in a wave pattern. Each follicular wave is characterized by a group of small follicles that are recruted and start a growing phase wich is commom to all follicles. There are evidencies that zebu females (Bos indicus) have more follicles per wave than taurine females (Bos taurus). Some authors have described that the follicle population is relat…

  Studies of Single Nucleotide Polymorphisms (SNPs) as Molecular Markers in Bos indicus and Bos taurus Cows, Associated with High and Low Folliccle population Phenotype, BP.DR

(Only some records are available in English at this moment)

• Abstract

  The oviduct plays an key role in the reproduction of mammals, providing a microenvironment for oocyte maturation, sperm capacitation, fertilization, transport of gametes and early embryo development. To develop these functions the contraction and relaxation movements of the oviduct are essential. Two systems are well known for the control of these movements in the oviduct: vascular endoth…

  Protein expression profiles in bovine reproductive tissues, BE.EP.MS