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Information Journal Paper

Title

PHOTOPERIOD AS A FACTOR FOR STUDYING FLUCTUATIONS OF SEMINAL TRAITS DURING BREEDING AND NON‐BREEDING SEASON

Pages

  313-321

Abstract

 The main purpose of this study was to evaluate the influence of the PHOTOPERIOD on the seminal traits of crossbreed wool-producing RAMs throughout on year period. For the effect of PHOTOPERIOD two periods were considered: decreasing daylight length (summer and autumn) and increasing daylight length (winter and spring). For the study 5 Baluchi × Moghani (BL×MG) and 5 Arkharmerino × Moghani (AM×MG) RAMs were used. Semen collection started from first of October 2010 to end of September 2011. After a training period of 2 weeks semen ejaculates were evaluated for volume, total sperm count per ejaculate (TSE), SPERMATOZOA concentration, semen color, wave motion, percentage of progressive motility, percentage of live and abnormal SPERMATOZOA, semen pH, methylene blue reduction time (MBRT) and semen index (se-men volume × SPERMATOZOA concentration/mL × live SPERMATOZOA % × progressive motility %). Analysis of the yearlong data showed that semen samples with the best quality were collected in September to Novem-ber (P<0.05). Significant SEASONAL VARIATIONs of semen traits were observed for all of seminal traits except for progressive motility, percentage of live SPERMATOZOA and MBRT. Yet, no statistical differences were found between the two genetic groups (P>0.05). Although there were significant seasonal changes in semen characteristics of the crosses, the fresh semen showed adequate quality to be used for artificial or natural insemination all around the year. PHOTOPERIOD was found to influence semen production in two genetic groups at 38 o02’ N, 46 o27’ E at an altitude of 1567 m above sea level of Iran. However, these effects should are not detrimental to the use of RAMs for breeding purposes throughout the year.

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    APA: Copy

    POURSEIF, M.M., MOGHADDAM, G.H., RAFAT, S.A., DAGHIGH KIA, H., & POURSEIF, A.. (2013). PHOTOPERIOD AS A FACTOR FOR STUDYING FLUCTUATIONS OF SEMINAL TRAITS DURING BREEDING AND NON‐BREEDING SEASON. IRANIAN JOURNAL OF APPLIED ANIMAL SCIENCE, 3(2), 313-321. SID. https://sid.ir/paper/614759/en

    Vancouver: Copy

    POURSEIF M.M., MOGHADDAM G.H., RAFAT S.A., DAGHIGH KIA H., POURSEIF A.. PHOTOPERIOD AS A FACTOR FOR STUDYING FLUCTUATIONS OF SEMINAL TRAITS DURING BREEDING AND NON‐BREEDING SEASON. IRANIAN JOURNAL OF APPLIED ANIMAL SCIENCE[Internet]. 2013;3(2):313-321. Available from: https://sid.ir/paper/614759/en

    IEEE: Copy

    M.M. POURSEIF, G.H. MOGHADDAM, S.A. RAFAT, H. DAGHIGH KIA, and A. POURSEIF, “PHOTOPERIOD AS A FACTOR FOR STUDYING FLUCTUATIONS OF SEMINAL TRAITS DURING BREEDING AND NON‐BREEDING SEASON,” IRANIAN JOURNAL OF APPLIED ANIMAL SCIENCE, vol. 3, no. 2, pp. 313–321, 2013, [Online]. Available: https://sid.ir/paper/614759/en

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