2026-04-18T02:13:44Zhttps://recercat.cat/oai/request
oai:recercat.cat:10256/137202024-06-18T13:35:45Zcom_2072_452955com_2072_2054col_2072_452958
RECERCAT author Pinart Nadal, Elisabeth author Domènech, Esther author Bussalleu Muntada, Eva author Yeste Oliveras, Marc author Bonet, Sergi 2024-06-18T13:35:45Z 2024-06-18T13:35:45Z info:eu-repo/date/embargoEnd/2026-01-012017-02-01 http://hdl.handle.net/10256/13720 The present study compares the sperm quality of boar seminal doses artificially inoculated with Escherichia coli and Clostridium perfringens, and maintained in liquid storage at 15 °C for a 9-day period. Seminal doses from 10 sexually mature Piétrain boars were diluted in a Beltsville Thawing Solution (BTS)-based extender and infected either with E. coli or C. perfringens, with bacterial loads ranging from 101 to 107 cfu mL−1. During storage, the changes in sperm quality were determined by assessing pH, sperm viability, sperm motiliy, sperm morphology, sperm agglutination degree, and sperm-bacteria interaction. The infection of seminal doses led to an alkalinization of the medium, which was of higher extend in doses infected with C. perfringens. The effect of contamination on sperm viability and motility relied on bacterial type and load. Therefore, while E. coli was more harmful than C. perfringens in bacterial loads ranging from 101 to 106 cfu mL−1, the detrimental impact of C. perfringens was more apparent than that of E. coli at a bacterial load of 107 cfu mL−1. Despite sperm morphology not being affected by either bacterial type or load, sperm agglutination and sperm-bacteria interaction were characteristic of doses infected with E. coli, and increased concomintantly with bacterial load and along storage period. In conclusion, the effects of infection by E. coli on sperm quality were dependent of both bacterial load and storage period, whereas the effects of C. perfringens were mainly dependent on the bacterial load, with a threshold at 107 cfu mL−1 from which the sperm quality of seminal doses was greatly impairedThe present research was supported by Ministry of Economy and Competitiveness, Spain (Grant code: AGL2013-47798-P) Tots els drets reservats info:eu-repo/semantics/embargoedAccess Porcs -- Espermatozoides Swine -- Spermatozoa Clostridium perfringens Escheríchia coli Semen Porcs -- Inseminació artificial Swine -- Artificial insemination A comparative study of the effects of Escherichia coli and Clostridium perfringens upon boar semen preserved in liquid storage info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion