Browsing Artículos Científicos by Subject "TORO"
Now showing items 1-7 of 7
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Breeding soundness evaluation of extensively managed bulls in Costa Rica
(Elsevier, 1999-02-17)This paper describes the results of single breeding soundness evaluations (BSE) in 898 Bos indicus, Bos taurus and B. indicus x B. taurus bulls, 1 to 12 yr. old, extensively reared in different climatic regions of Costa ... -
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 ... -
Morphological features of the seminiferous and cauda Epididymides epithelia of breeding zebu bulls with normal and decreased testicular consistency
(The Society for Reproduction and Development, 1999)The fine morphology of the testes and epididymes collected from breeding Zebu (Bos indicus) bulls with normal or decreased testicular consistency (TC) at clinical palpation was studied. The ultrastructure of testicles with ... -
Prevalence and risk factors for Trichomonas foetus infection in cattle in northeastern Costa Rica
(Elsevier, 1992-05-27)Two studies (one pilot and one cross-sectional) were conducted in the two main livestock-rearing areas of Costa Rica using an improved method (In-Pouch TF) for the detection of Trichomonas foetus infection in bulls. Herd ... -
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 ...