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Deferred bulls: are cycles per conception and pregnancy rate determined by the type of spermiogramme deviation under natural mating?
(Elsevier, 2016)
Deferred bulls undergo clinical deviations that could
be transitory or have an uncertain potential fertility output. Data in Costa Rica showed no significant differences
in conception rate (CR) between sound vs. deferred ...
Seasonal variations in testicular consistency, scrotal circumference and spermiogramme parameters of extensively reared Brahman (Bos indicus) bulls in the tropics
(Elsevier, 2002-07)
Twenty-five extensively bred mature Brahman (Bos indicus) breeding bulls were clinically examined and electroejaculated at monthly intervals for 13 months to study whether testicular consistency (TC), scrotal circumference ...
Tail stump sperm defect as a cause of sterility in an indobrasil (Bus indicus) bull
(Blackwell Wissenschafts-Verlag, Berlin, 1998)
The first known case of an Indobrasil (BOA indicus) bull, with a
frequency of 100% of the specific sperm abnormality, known
as ‘tail stump sperm defect’ is reported. A 5-year old bull was
located as a breeding sire in ...
Thermographic scrotal pattern in sound for breeding zebu bulls extensively managed in tropical Costa Rica
(Animal Reproduction Science, 2016-06)
Infrared thermography (IR) is relatively a novel proce-
dure in animal andrology for studying bull’s scrotal thermal
pattern. The accuracy of this technique lies onto camera’s
performance and operator skills, and ...
The infrared thermography of the scrotal surface in the long scrotum bull. Preliminary comparisons to normal scrotum sound for breeding bulls
(Universidad Nacional, Costa Rica, 2023)
Long scrotum bulls (LS) (i.e the scrotum apex surpassing the hock joint level) have been
reported with a high culling rate compared to normal scrotum sires (NS) (scrotum apex above
the hock joint), due to seminal and ...