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The Breed and Season Effects on Scrotal Circumference and Semen Characteristics of Hair Sheep Rams Under Tropical Conditions
Author(s) -
CárdenasGallegos MA,
AkéLópez JR,
CenturiónCastro F,
MagañaMonforte JG
Publication year - 2012
Publication title -
reproduction in domestic animals
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.546
H-Index - 66
eISSN - 1439-0531
pISSN - 0936-6768
DOI - 10.1111/j.1439-0531.2012.02001.x
Subject(s) - breed , semen , biology , seasonal breeder , zoology , sperm , winter season , circumference , anatomy , ecology , botany , mathematics , geometry , climatology , geology
Contents The aim of the present work was to evaluate the breed and season effects on scrotal circumference (SC) and semen characteristics of 28 mature hair sheep rams kept under tropical conditions. SCs, sperm concentration (SPC) and abnormal sperm were significantly affected by breed effect (p < 0.001). The season effect was significant in SPC (p < 0.0001) while ejaculate volume, mass motility and SPC were affected by breed × season interaction effect (p < 0.001). It can be concluded that the magnitude of the breed and season effects were not sufficient to affect the reproductive capacity of hair sheep rams throughout the year.