5 documents found, page 1 of 1
EVALUATION OF THE FREEZABILITY OF THE BOVINE EPIDIDYMIS TAIL SPERM WITH THE ADD...
Cruz, Gabriela Passamani da; Zanfrilli dos Santos, Ana Paula; Freitas Guaitolini, Carlos Renato de; Denck Tramontin, Marcio LuizMade available in DSpace on 2021-06-25T15:01:01Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-03-01; BACKGROUND: The cryopreservation and recovery of epididymis tail sperm is an important biotechnology dependent on the composition of the freezing medium. OBJETIVE: To evaluate the effect of melatonin, added to commercial freezing medium extender, on the kinetics and viability of bovine epididymis tail s...
Reproductive efficiency Nellore and crossbred cows submitted to administration ...
Valero, Alan Gabriel; Guaitolini, Carlos Renato de Freitas; Crespilho, Andre Maciel; Cruz, Gabriela Passamani da; Tramontin, Marcio Luiz DenckThis study aimed to evaluate the influence of medroxyprogesterone acetate (MGA) supplementation between the 13th and 20th day after Fixed-Time-Artificial Insemination (FTAI), on the conception and gestation rates of Nellore and crossbred cows (Nellore x Angus), pluriparous and lactating. For the study, 349 Nellore cows and 270 crossbred cows were selected, distributed into 1) group G1 (n=176): Nellore cows subm...
Effects of the addition of oocyte meiosis-inhibiting drugs on the expression of...
Maziero, Rosiara Rosaria Dias [UNESP]; Freitas Guaitolini, Carlos Renato de [UNESP]; Paschoal, Daniela Martins [UNESP]; Crespilho, Andre MacielMade available in DSpace on 2020-12-10T20:07:02Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-03-01; Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); University Paranaense -UNIPAR; The present study evaluated the effects of the blockade of meiosis in bovine oocytes by the cyclin-dependent kinase inhibitors roscovitine (ROS) and butyrolactone-I (BL-I) on nuclear maturation and extracellula...
PARADOXICAL EFFECT OF QUERCETIN ANTIOXIDANT ON GOAT SPERM PARAMETERS AFTER CRYO...
Borges, Marcelo Sant'Ana; Barbosa Born, Joana Larissa; Conti, Leticia Martins; Segabinazzi, Lorenzo Garrido [UNESP]; Nichi, MarcilioMade available in DSpace on 2020-12-10T20:14:02Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-05-01; BACKGROUND: Some antioxidants have been used in semen extenders to reduce adverse effects caused by excessive reactive oxygen species (ROS) production. The study was carried out to assess the effect of quercetin (QC) antioxidant therapy on goat semen submitted to cryopreservation. OBJECTIVE: To evaluate...
Use of cooled bull semen as a strategy to increase the pregnancy rate in fixed-...
Crespilho, Andre Maciel; Papa, Frederico Ozanam [UNESP]; Santos, Marcos de Paula; Sá Filho, Manoel Francisco deSubmitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-27T11:26:27Z No. of bitstreams: 0; Made available in DSpace on 2014-05-27T11:26:27Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-04-07; Semen cryopreservation is still considered suboptimal due to lower fertility when compared to fresh semen. The reasons for the loss of fertility are various and related to irreversible...