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Angus sire field fertility and in vitro sperm characteristics following use of different sperm insemination doses in Brazilian beef cattle
(2020-04-15)
The primary objective was to determine if Angus bull fertility varied by number of sperm inseminated. A secondary objective was to characterize the potential impact of random variation on fertility using two identical sperm ...
Effect of sperm dose on pregnancy per timed AI in Brazilian beef cattle.
(Amer Soc Animal Science, 2017-08-01)
Effect of age and genetic group on characteristics of the scrotum, testes and testicular vascular cones, and on sperm production and semen quality in AI bulls in Brazil
(Elsevier B.V., 2002-10-01)
The objectives were to determine the effects of age and genetic group on characteristics of the scrotum, testes and testicular vascular cones (TVC), and on sperm production and semen quality in 107 Bos indicus, B, taurus ...
Effect of age and genetic group on characteristics of the scrotum, testes and testicular vascular cones, and on sperm production and semen quality in AI bulls in Brazil
(Elsevier B.V., 2002-10-01)
The objectives were to determine the effects of age and genetic group on characteristics of the scrotum, testes and testicular vascular cones (TVC), and on sperm production and semen quality in 107 Bos indicus, B, taurus ...
Different extenders in the cryopreservation of bovine epididymal spermatozoa
(Elsevier B. V., 2015)
The objective of this study was to evaluate the effects of two different egg yolk extenders incubated with or without Sperm Talp on the motility and plasma membrane integrity of cryopreserved bovine epididymal spermatozoa ...
Integrity of the plasma membrane, the acrosomal membrane, and the mitochondrial membrane potential of sperm in Nelore bulls from puberty to sexual maturity
(2016-01-01)
This study evaluated the plasma membrane integrity, acrosomal membrane integrity, and mitochondrial membrane potential of Nelore bull sperm from early puberty to early sexual maturity and their associations with sperm ...
Tritrichomonas fetus extracellular products decrease progressive motility of bull sperm
(Elsevier B.V., 2010-01-01)
Tritrichomonas fetus causes infertility and abortion in cattle; however, there is scarce information regarding the susceptibility of bovine sperm to this parasite. The objective of this study was to analyze in vitro the ...
Does sperm quality and DNA integrity differ in cryopreserved semen samples from young, adult, and aged Nellore bulls?
(2017-06-21)
Background: In humans, it is now well documented that rising paternal age is correlated with decreased sperm DNA integrity and embryonic developmental failures. On the other side of the coin, it is also reported that very ...
Cryopreservation of bovine spermatozoa from the epididymal tail using conventional and automated methods
(Univ Austral Chile, Fac Ciencias Veterinarias, 2014-01-01)
Cryopreservation of sperm is important to preserve the gerrnplasm from animals of genetic value, which can die unexpectedly. This study compares conventional and automated methods of cryopreservation of spermatozoa obtained ...