Effects of scrotal insulation on sperm production, semen quality, and testicular echotexture in Bos indicus and Bos indicus x Bos taurus bulls

The objectives of the present study were to evaluate the effects of scrotal insulation on sperm production, semen quality, and testicular echotexture in Bos indicus and Bos indicus x Bos taurus crossbred bulls. In one experiment, B. indicus bulls (n=12) were allocated to control and whole-scrotum in...

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Bibliographic Details
Published in:Animal reproduction science 2003-11, Vol.79 (1-2), p.1-15
Main Authors: Brito, Leonardo F C, Silva, Antonio E D F, Barbosa, Rogerio T, Unanian, Maria M, Kastelic, John P
Format: Article
Language:English
Subjects:
Animals
Body Temperature
Cattle - physiology
Crosses, Genetic
Cytoplasm - ultrastructure
Male
Scrotum - physiology
Sperm Count
Sperm Motility
Spermatogenesis
Spermatozoa - physiology
Spermatozoa - ultrastructure
Testis - diagnostic imaging
Ultrasonography
Vacuoles - ultrastructure
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Summary:The objectives of the present study were to evaluate the effects of scrotal insulation on sperm production, semen quality, and testicular echotexture in Bos indicus and Bos indicus x Bos taurus crossbred bulls. In one experiment, B. indicus bulls (n=12) were allocated to control and whole-scrotum insulation groups, while in a second experiment, crossbred bulls (n=21) were allocated into control, whole-scrotum, and scrotal-neck insulation groups. Insulation was applied for 4 days (start of insulation = Day 0) and semen collection and testicular ultrasonographic examinations were performed twice weekly until Day 35. Sperm concentration and total sperm output during the post-insulation period were greater in control groups, but significant differences were observed only in B. indicus bulls. Overall, sperm motility in scrotal-insulated B. indicus bulls was lower (P
ISSN:0378-4320
1873-2232
DOI:10.1016/S0378-4320(03)00082-4