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Leal DF, Viana CHC, Almond GW, Monteiro MS, Garbossa CAP, Carnevale RF, Muro BBD, Poor AP, Pugliesi G, Nichi M, Watanabe TTN, Marques MG. Estrus Synchronization of Replacement Gilts Using Estradiol Cipionate and PGF 2α and Its Effects on Reproductive Outcomes. Animals (Basel) 2022; 12:ani12233393. [PMID: 36496915 PMCID: PMC9741136 DOI: 10.3390/ani12233393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 11/15/2022] [Accepted: 11/28/2022] [Indexed: 12/12/2022] Open
Abstract
In this study, we evaluated the effectiveness of using estrogen-induced prolonged luteal function followed by prostaglandin F2 alpha (PGF2α) treatment to synchronize estrus in gilts. On day12 of the estrus cycle (D0 = first day of standing estrus), 52 gilts were assigned at random to two experimental groups: non-treated gilts (CON, n = 22), serving as controls, and prolonged luteal function group (CYP, n = 30), receiving a single treatment with 10 mg of estradiol cypionate intramuscularly Starting on day 12, blood samples were collected for estradiol and progesterone assays. Estrus detection started on day 17. Gilts from the CON group were inseminated at the onset of natural estrus. On day 28 CYP gilts were treated with PGF2α to induce luteolysis and inseminated at the onset of estrus. Gilts were slaughtered 5 d after the last insemination. A single treatment with estradiol cypionate prolonged luteal function in 90% of treated gilts. The duration of the estrous cycle was longer (p < 0.0001) for CYP gilts compared to CON gilts. CYP gilts showed synchronized estrus 3.96 ± 0.19 d after induction of luteolysis. The conception rate was similar (p = 0.10) for CON and CYP gilts. No difference was observed in the embryo recovery rate (p = 0.18) and total number of embryos per female (p = 0.06). The percentage of unfertilized oocytes, fragmented embryos and viable embryos was similar among females from CON and CYP groups (p > 0.05). The treatment of gilts with a single application of 10 mg of estradiol cypionate on day 12 of the estrous cycle was effective in prolonging luteal function and treatment with PGF2α resulted in synchronized estrus. Additionally, the synchronization protocol had no deleterious effect on fertility and embryonic development.
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Affiliation(s)
- Diego Feitosa Leal
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Sciences, University of São Paulo (USP), Pirassununga 13635-900, Brazil
- Correspondence:
| | | | - Glen William Almond
- Department of Population Health & Pathobiology, College of Veterinary Medicine, North Carolina State University (NCSU), Raleigh, NC 27607, USA
| | - Matheus Saliba Monteiro
- Department of Preventive Veterinary Medicine and Animal Health, School of Veterinary Medicine and Animal Sciences, University of São Paulo (USP), São Paulo 05508-270, Brazil
| | - Cesar Augusto Pospissil Garbossa
- Department of Nutrition and Animal Production, School of Veterinary Medicine and Animal Sciences, University of São Paulo (USP), Pirassununga 13635-900, Brazil
| | - Rafaella Fernandes Carnevale
- Department of Nutrition and Animal Production, School of Veterinary Medicine and Animal Sciences, University of São Paulo (USP), Pirassununga 13635-900, Brazil
| | - Bruno Bracco Donatelli Muro
- Department of Nutrition and Animal Production, School of Veterinary Medicine and Animal Sciences, University of São Paulo (USP), Pirassununga 13635-900, Brazil
| | - André Pegoraro Poor
- Department of Preventive Veterinary Medicine and Animal Health, School of Veterinary Medicine and Animal Sciences, University of São Paulo (USP), São Paulo 05508-270, Brazil
| | - Guilherme Pugliesi
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Sciences, University of São Paulo (USP), Pirassununga 13635-900, Brazil
| | - Marcílio Nichi
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Sciences, University of São Paulo (USP), Pirassununga 13635-900, Brazil
| | - Tatiane Terumi Negrão Watanabe
- Department of Population Health & Pathobiology, College of Veterinary Medicine, North Carolina State University (NCSU), Raleigh, NC 27607, USA
| | - Mariana Groke Marques
- Embrapa Suínos e Aves, Concórdia 89715-899, Brazil
- Postgraduate Program in Animal Production and Health, Instituto Federal Catarinense, Concórdia 89703-720, Brazil
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Hirayama Y, Misumi K, Yoshioka K, Noguchi M, Kikuchi K. Induction of short-term pseudopregnancy in gilts by the administration of estradiol benzoate or estradiol dipropionate to achieve ovulatory synchronization for embryo collection. Anim Sci J 2021; 92:e13480. [PMID: 33543586 DOI: 10.1111/asj.13480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 09/16/2020] [Accepted: 09/28/2020] [Indexed: 11/30/2022]
Abstract
A study was conducted to investigate whether ovulation in gilts could be synchronized for embryo collection by the administration of estradiol benzoate (EB) or estradiol dipropionate (EDP) to induce pseudopregnancy, followed by the treatment with prostaglandin F2α (PGF2α ) on 10 days after. Ten gilts each received a total of 20 mg of EB or EDP on Day 10 or EB on Day 10 and 14 to induce pseudopregnancy (Day 0 = onset of estrus). Donors received PGF2α 10 or 15 days (as a control) after the first administration of estrogens and subsequently eCG and hCG, and were then inseminated artificially. The embryos were collected 7 days after the administration of hCG, and assessed for embryo yield and their developmental stages. All protocols resulted in good embryo yield (9.8-13.2 embryos in average), and the embryos showed average ability to develop to the expanded blastocyst stage (3.29-4.03 as developmental scores) without any significant differences among the protocols. These results suggest that the administration of PGF2α 10 days after the treatment of gilts with EB or EDP would allow synchronization of ovulation and embryo collection, as well as shortening the period from estrus detection to embryo collection, thus improving embryo collection efficiency.
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Affiliation(s)
- Yuri Hirayama
- Department of Planning and Coordination, National Livestock Breeding Center, Fukushima, Japan
| | - Koji Misumi
- Department of Planning and Coordination, National Livestock Breeding Center, Fukushima, Japan.,Department of Bioresource Sciences, Nihon University, Fujisawa, Japan
| | - Koji Yoshioka
- Division of Pathology and Pathophysiology, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Ibaraki, Japan
| | - Michiko Noguchi
- Department of Veterinary Medicine, Azabu University, Sagamihara, Japan
| | - Kazuhiro Kikuchi
- Division of Animal Sciences, Institute of Agrobiological Sciences, NARO, Ibaraki, Japan.,The United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
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Hirayama Y, Takishita R, Misawa H, Kikuchi K, Misumi K, Egawa S, Motoyama S, Hasuta Y, Nakamura Y, Hashiyada Y. Non-surgical transfer of vitrified porcine embryos using a catheter designed for a proximal site of the uterus. Anim Sci J 2020; 91:e13457. [PMID: 32959472 PMCID: PMC7757184 DOI: 10.1111/asj.13457] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 07/31/2020] [Accepted: 08/14/2020] [Indexed: 01/02/2023]
Abstract
This study aimed to compare the efficiency of non‐surgical embryo transfer (ET) using a newly developed catheter, which enables transferring embryos into a proximal site of the uterus (mostly uterine body), and surgical ET of vitrified porcine embryos. In Experiment 1, the catheter was inserted into 12 gilts, with each half of the group allocated to skilled or novice operators. The time required for insertion into the uterus did not differ between skilled and novice operators (4 min 9 s and 4 min 6 s, respectively). In Experiment 2, 12 gilts were used as recipients for non‐surgical and surgical ET with vitrified embryos (n = 6, each). There was no significant difference in the rate of piglet production based on the number of transferred embryos between surgical and non‐surgical ET (25.8% vs. 15.4%, p = .098). The results suggest that non‐surgical ET catheter allowed for easy insertion and transfer of embryos without special training. Although the catheter is effective for deposition of embryos into the proximal site of uterus, the efficiency of piglet production is not enhanced compared with surgical ET. The ET method using this catheter, being labor‐saving and less‐invasive, may contribute to the improvement of ET in pigs.
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Affiliation(s)
- Yuri Hirayama
- Department of Planning and Coordination, National Livestock Breeding Center, Fukushima, Japan
| | - Rie Takishita
- National Livestock Breeding Center Miyazaki Station, Miyazaki, Japan
| | - Hiroyasu Misawa
- First development Gr. Section, Misawa Medical Industry Co., Ltd, Ibaraki, Japan
| | - Kazuhiro Kikuchi
- Reproductive Biology Unit, Division of Animal Sciences, Institute of Agrobiological Sciences, NARO (National Agriculture and Food Research Organization), Ibaraki, Japan.,The United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
| | - Koji Misumi
- National Livestock Breeding Center Miyazaki Station, Miyazaki, Japan.,Department of Animal Science and Resources, Nihon University College of Bioresource Sciences, Kanagawa, Japan
| | - Sachiko Egawa
- Department of Planning and Coordination, National Livestock Breeding Center, Fukushima, Japan
| | | | - Yasunobu Hasuta
- Department of Planning and Coordination, National Livestock Breeding Center, Fukushima, Japan
| | | | - Yutaka Hashiyada
- Department of Planning and Coordination, National Livestock Breeding Center, Fukushima, Japan.,Department of Bioproduction Science, Faculty of Bioresources, and Environmental Sciences, Ishikawa Prefectural University, Ishikawa, Japan
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