کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8403770 | 1544682 | 2018 | 23 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The tail in tropical hair ewes (Ovis aries) that are in estrus is used as a proceptive signal and favors ram' copulation
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم دامی و جانورشناسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The tail in tropical hair ewes (Ovis aries) that are in estrus is used as a proceptive signal and favors ram' copulation The tail in tropical hair ewes (Ovis aries) that are in estrus is used as a proceptive signal and favors ram' copulation](/preview/png/8403770.png)
چکیده انگلیسی
Two experiments were performed to determine if the tail has a role: 1) in proceptive behavior, and 2) in facilitating copulation in hair sheep. The movements and position of the tail of estrous and non-estrous ewes in response to male courtship were compared in the first study. In the second study, the courtship of rams and mating behavior directed towards tailed or tail-docked, in estrus or diestrus ewes, were compared. Both experiments were conducted with restrained ewes during 3â¯min assessment periods. In Experiment 1, tail movements occurred in short episodes in response to physical contact of the male, but the rest of the time the tail of non-estrous ewes was drawn inward to the body, while in estrous ewes it simply hung naturally straight downward. Ewes in estrus had many tail moving episodes (P <0.001) with more movements per episode (P <0.001), that were of greater amplitude (P <0.001) and greater elevation in angle from the body (P <0.001) than in non-estrus ewes. In Experiment 2, ejaculation latencies with non-estrous ewes were longer than with estrous ewes (P <0.0001), and rams had more attempts to mount (Pâ¯=â¯0.008), and more completed mounts (Pâ¯=â¯0.0003) in non-estrous than estrous ewes. In addition, rams ejaculated more times (P <0.0001), and had a greater ejaculations/(mounts + ejaculations) ratio in estrous than non-estrous ewes (P <0.0001). More rams also had anal intromissions in docked than in intact tail-ewes (Pâ¯=â¯0.0002). In conclusion, movements and position of the tail of estrous ewes is a primary component of the proceptive behavior that facilitates mating and serves as a physical barrier to avoid anal intromissions in hair sheep.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Animal Reproduction Science - Volume 195, August 2018, Pages 65-70
Journal: Animal Reproduction Science - Volume 195, August 2018, Pages 65-70
نویسندگان
Ángel Fierros-GarcÃa, Rodolfo Ungerfeld, Virginio Aguirre, AgustÃn Orihuela,