The introduction of sexually active bucks at different moments of the oestrous cycle does not modify the NEFAs or the IGF-1 concentrations
Non-esterified fatty acids (NEFAs) and Insulin-like growth factor-I (IGF-1) concentrations are modified after the induction of a "male effect". The present study examined the effect of the introduction of males into a group of females that were previously isolated from males, during differ...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2021-01-01
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| Series: | Italian Journal of Animal Science |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/1828051X.2021.1908182 |
| _version_ | 1811225584400859136 |
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| author | Luis Ángel Zarazaga María Carolina Gatica José Luis Guzmán |
| author_facet | Luis Ángel Zarazaga María Carolina Gatica José Luis Guzmán |
| author_sort | Luis Ángel Zarazaga |
| collection | DOAJ |
| description | Non-esterified fatty acids (NEFAs) and Insulin-like growth factor-I (IGF-1) concentrations are modified after the induction of a "male effect". The present study examined the effect of the introduction of males into a group of females that were previously isolated from males, during different phases of the sexual cycle, to determine the changes to the NEFAs and IGF-1 concentrations. Sixty-four does were divided into six groups. The males were introduced with the females at different points after sponge removal. Introduction was carried out 48 h (n = 10, Group 48H), 72 h (n = 12, Group 72H), 4 days (n = 10, Group 4 D), 13 days (n = 10, Group 13 D) or 18 days after sponge removal (n = 10, Group 18 D), and a control group was implemented that had no contact with males (n = 12, Control Group). Plasma samples were taken every day to determine daily progesterone (P4) and NEFAs concentrations, and every second day for IGF-1 determination. No effects from the experimental groups were observed on the mean NEFAs or IGF-1 concentrations (p > .05). No differences between the time before male introduction and after male introduction were observed on the NEFAs concentrations (p > .05) or IGF-1 concentrations (p > .05). On the whole, only differences were observed in the NEFAs concentrations between the follicular and the luteal phases (9.48 ± 0.38 vs 8.15 ± 0.15 mg/dL for follicular and luteal phases, respectively, p < .01). The results of the present experiment demonstrated that the introduction of sexually active males at different moments of the oestrous cycle does not modify the NEFAs or the IGF-1 concentrations.Highlights Results shows that NEFAs or IGF-1 concentrations did not vary after the introduction of males. Results shows that NEFAs concentrations increases during the follicular phase. Results shows that IGF-1 concentrations did not vary during the oestrous cycle. |
| first_indexed | 2024-04-12T09:08:36Z |
| format | Article |
| id | doaj.art-d93640234c954dcd8a7d2ac52ff44a03 |
| institution | Directory Open Access Journal |
| issn | 1594-4077 1828-051X |
| language | English |
| last_indexed | 2024-04-12T09:08:36Z |
| publishDate | 2021-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Italian Journal of Animal Science |
| spelling | doaj.art-d93640234c954dcd8a7d2ac52ff44a032022-12-22T03:39:01ZengTaylor & Francis GroupItalian Journal of Animal Science1594-40771828-051X2021-01-0120170771610.1080/1828051X.2021.19081821908182The introduction of sexually active bucks at different moments of the oestrous cycle does not modify the NEFAs or the IGF-1 concentrationsLuis Ángel Zarazaga0María Carolina Gatica1José Luis Guzmán2Departamento de Ciencias Agroforestales, University of Huelva, ‘Campus de Excelencia Internacional Agroalimentario, ceiA3’Faculty of Natural Resources, University Arturo PratDepartamento de Ciencias Agroforestales, University of Huelva, ‘Campus de Excelencia Internacional Agroalimentario, ceiA3’Non-esterified fatty acids (NEFAs) and Insulin-like growth factor-I (IGF-1) concentrations are modified after the induction of a "male effect". The present study examined the effect of the introduction of males into a group of females that were previously isolated from males, during different phases of the sexual cycle, to determine the changes to the NEFAs and IGF-1 concentrations. Sixty-four does were divided into six groups. The males were introduced with the females at different points after sponge removal. Introduction was carried out 48 h (n = 10, Group 48H), 72 h (n = 12, Group 72H), 4 days (n = 10, Group 4 D), 13 days (n = 10, Group 13 D) or 18 days after sponge removal (n = 10, Group 18 D), and a control group was implemented that had no contact with males (n = 12, Control Group). Plasma samples were taken every day to determine daily progesterone (P4) and NEFAs concentrations, and every second day for IGF-1 determination. No effects from the experimental groups were observed on the mean NEFAs or IGF-1 concentrations (p > .05). No differences between the time before male introduction and after male introduction were observed on the NEFAs concentrations (p > .05) or IGF-1 concentrations (p > .05). On the whole, only differences were observed in the NEFAs concentrations between the follicular and the luteal phases (9.48 ± 0.38 vs 8.15 ± 0.15 mg/dL for follicular and luteal phases, respectively, p < .01). The results of the present experiment demonstrated that the introduction of sexually active males at different moments of the oestrous cycle does not modify the NEFAs or the IGF-1 concentrations.Highlights Results shows that NEFAs or IGF-1 concentrations did not vary after the introduction of males. Results shows that NEFAs concentrations increases during the follicular phase. Results shows that IGF-1 concentrations did not vary during the oestrous cycle.http://dx.doi.org/10.1080/1828051X.2021.1908182goat“male effect”oestrous cyclenefaigf-1 |
| spellingShingle | Luis Ángel Zarazaga María Carolina Gatica José Luis Guzmán The introduction of sexually active bucks at different moments of the oestrous cycle does not modify the NEFAs or the IGF-1 concentrations Italian Journal of Animal Science goat “male effect” oestrous cycle nefa igf-1 |
| title | The introduction of sexually active bucks at different moments of the oestrous cycle does not modify the NEFAs or the IGF-1 concentrations |
| title_full | The introduction of sexually active bucks at different moments of the oestrous cycle does not modify the NEFAs or the IGF-1 concentrations |
| title_fullStr | The introduction of sexually active bucks at different moments of the oestrous cycle does not modify the NEFAs or the IGF-1 concentrations |
| title_full_unstemmed | The introduction of sexually active bucks at different moments of the oestrous cycle does not modify the NEFAs or the IGF-1 concentrations |
| title_short | The introduction of sexually active bucks at different moments of the oestrous cycle does not modify the NEFAs or the IGF-1 concentrations |
| title_sort | introduction of sexually active bucks at different moments of the oestrous cycle does not modify the nefas or the igf 1 concentrations |
| topic | goat “male effect” oestrous cycle nefa igf-1 |
| url | http://dx.doi.org/10.1080/1828051X.2021.1908182 |
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