The Revista Brasileira de Zootecnia (RBZ) is a publication dedicated to the broad field of Animal Science. We publish high-quality, original scientific research that spans across diverse areas within the discipline. The scope of RBZ encompasses a wide range of topics, including aquaculture, biometeorology and animal welfare, forage crops and grasslands, animal and forage plants breeding and genetics, animal reproduction, ruminant and non-ruminant nutrition, meat science and muscle biology, precision livestock, and animal production systems and agribusiness.
The Revista Brasileira de Zootecnia (RBZ) is a publication dedicated to the broad field of Animal Science. We publish high-quality, original scientific research that spans across diverse areas within the discipline. The scope of RBZ encompasses a wide range of topics, including aquaculture, biometeorology and animal welfare, forage crops and grasslands, animal and forage plants breeding and genetics, animal reproduction, ruminant and non-ruminant nutrition, meat science and muscle biology, precision livestock, and animal production systems and agribusiness.
The Revista Brasileira de Zootecnia (RBZ) is a publication dedicated to the broad field of Animal Science. We publish high-quality, original scientific research that spans across diverse areas within the discipline. The scope of RBZ encompasses a wide range of topics, including aquaculture, biometeorology and animal welfare, forage crops and grasslands, animal and forage plants breeding and genetics, animal reproduction, ruminant and non-ruminant nutrition, meat science and muscle biology, precision livestock, and animal production systems and agribusiness.
01/Jun/2002
Lia de Alencar Coelho, César Roberto Esper, Rafael Herrera Alvarez, Roberta Vantini, Ivo Luis Almeida Junior
DOI: 10.1590/S1516-35982002000500007
This study aimed to evaluate the effect of different gonadotropin sources for in vitro maturation of bovine oocytes fertilized and developed in vitro on cleavage (CR) and blastocysts rates (BLR). The immature oocytes from slaughterhouse cows ovaries were matured in vitro under different conditions: TCM 199 medium with 10% eostrous cow serum (ECS), aditives, hepes, NaHCO3, sodium pyruvate, antibiotics (B-199 medium), 20 UI/mL PMSG and 10 UI/ml hCG (PMSG/hCG) or B-199 medium with 5 mg/mL FSH and 5 mg/mL LH […]
Keywords: bovine; cleavage rate; embryo; gonadotropin; in vitro fertilization; in vitro maturation
01/Apr/2000
Lia de Alencar Coelho, César Roberto Esper, Joaquim Mansano Garcia, Roberta Vantini, Ivo Luis Almeida Junior
DOI: 10.1590/S1516-35982000000200012
This study investigated the effect of semen extender on in vitro development of bovine oocytes after in vitro maturation and fertilization. The ejaculate from one bull was divided in three parts which were diluted with three different extenders: Egg yolk/Lactose (EYL), Egg yolk/Citrate (EYC) and Egg yolk/Tris (EYT). Samples of semen diluted with these extenders were frozen in liquid nitrogen and, after thawing, were filtered by discontinuous Percoll gradient. The sperm concentration was adjusted to 10 x 106 cells/mL and […]
Keywords: bovine; cleavage rate; embryo; in vitro fertilization; semen extender