Effects of oestrous synchronization with altrenogest in gilts on endometrial and embryonic characteristics
| Autor: | B. B. D. Muro, Maitê Vidal Mendonça, Denis Hideki Nakasone, Ana Paula Pinoti Pavaneli, Rafaella Fernandes Carnevale, André Furugen Cesar de Andrade, Cristian Hernando Garcia Martinez, Gisele Mouro Ravagnani, M.S. Passareli, Simone Maria Massami Kitamura Martins, Ricardo de Francisco Strefezzi |
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| Rok vydání: | 2020 |
| Předmět: |
Ovulation
Altrenogest Swine 040301 veterinary sciences media_common.quotation_subject Statistical difference altrenogest Biology Endometrium SF1-1100 0403 veterinary science Andrology chemistry.chemical_compound Estrus Pregnancy medicine Animals media_common Embryogenesis 0402 animal and dairy science Embryo gilts 04 agricultural and veterinary sciences medicine.disease 040201 dairy & animal science Embryonic stem cell Animal culture Trenbolone Acetate/analogs & derivatives SINCRONIZAÇÃO DO CIO medicine.anatomical_structure chemistry embryonic development Female Animal Science and Zoology Trenbolone Acetate |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP Ravagnani, G M, Martinez, C H G, Carnevale, R F, Muro, B B D, Mendonça, M V, Pavaneli, A P P, Passareli, M S, Nakasone, D H, Strefezzi, R F, Martins, S M M K & Andrade, A F C 2020, ' Effects of oestrous synchronization with altrenogest in gilts on endometrial and embryonic characteristics ', Animal, vol. 14, no. 9, pp. 1899-1905 . https://doi.org/10.1017/S1751731120000658 Animal, Vol 14, Iss 9, Pp 1899-1905 (2020) |
| ISSN: | 1751-7311 |
| Popis: | The use of altrenogest (ALT) supplementation for oestrous synchronization improves subsequent reproductive performance of gilts and sows. However, the causes of this improvement in reproductive performance after ALT treatment are not fully/clearly understood. The objective of this study was to evaluate the effects of ALT supplementation for oestrous synchronization in gilts on the endometrial glands and embryonic development characteristics at 28 days of pregnancy. Pregnant gilts were divided into two experimental treatments: Control (did not receive ALT; n = 9 gilts) and ALT (ALT feeding at 20 mg/day for 18 days; n = 9 gilts). At 28 days of pregnancy, six gilts from each treatment were slaughtered, and reproductive tracts were immediately evaluated. There was no statistical difference (P > 0.05) between treatments regarding ovulation rate, number of embryos, number of vital embryos and number of non-vital embryos. Embryo weight, length and embryonic vesicle weight were lower in ALT treatment compared with Control (P < 0.01), and it was lower in the cervical uterine region compared with apex uterine region, respectively (P < 0.05). Higher values of gland duct area, gland duct perimeter, percentage of the glandular area and total endometrial area were observed in ALT treatment compared with Control (P < 0.05). The use of ALT during 18 days for oestrous synchronization in gilts increased the gland duct area, perimeter and total endometrial area but did not increase the embryo number and embryo size at day 28 of pregnancy. |
| Databáze: | OpenAIRE |
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