Abstract:
:The aim of this study was to investigate the effects of several dietary fatty acids (FAs) on semen quality and blood parameters in rams. We gave diet-supplemented treatments (35 g day(-1) ram(-1)) by C16:0 (palm oil), C18:2 [sunflower oil (SO)] and an n-3 source [fish oil (FO)] to 12 rams, who were fed for 15 weeks during their breeding season. Semen was collected once per week. Semen samples were extended with Tris-based cryoprotective diluents, then cooled to 5 °C and stored in liquid nitrogen. Positive responses were seen with FO after 4 weeks. The mean prefreezing semen characteristics improved with the intake of FO (P < 0.05). Interestingly, maximum sperm output in FO was achieved 7.5 × 10(9) when compared to palm oil 5.3 × 10(9). Rams that received FO had the highest total testosterone concentrations (11.3 ng ml(-1) for FO, 10.8 ng ml(-1) for SO and 10.2 ng ml(-1) for palm oil) during the experiment (P < 0.05). FO also improved the rams' sperm characteristics after thawing (P < 0.05). Although C16:0 is a major saturated FA in ram sperm and all rams have been fed isoenergetic rations, the unique FAs of FO improved fresh semen quality and freezing ability compared to other oils.
journal_name
Andrologiajournal_title
Andrologiaauthors
Esmaeili V,Shahverdi AH,Alizadeh AR,Alipour H,Chehrazi Mdoi
10.1111/and.12040subject
Has Abstractpub_date
2014-02-01 00:00:00pages
42-9issue
1eissn
0303-4569issn
1439-0272journal_volume
46pub_type
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