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Sorkh SDG, Mirzaei A, Zeyghami A. The effect of human menopausal gonadotropin and equine chorionic gonadotropin on the reproductive performance of treated ewes with short-term progesterone injections and sponge during the non-breeding season. Reprod Domest Anim 2024; 59:e14544. [PMID: 38426383 DOI: 10.1111/rda.14544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Revised: 01/23/2024] [Accepted: 02/10/2024] [Indexed: 03/02/2024]
Abstract
This study investigated the effect of human menopausal gonadotropin (hMG) on reproductive efficiency of synchronized ewes with the sponge and progesterone (P4) injection-based protocols. In study 1, anoestrous ewes (n = 120) were used. Sixty ewes were treated with sponge (S) for 12 days. The injection of eCG (SeCG group, n = 30) or hMG (ShMG, n = 30) was given at the time of sponge removal. Thirty ewes received IM injection of P4, three times every 48 h and the injection of hMG was given 24 h after the third P4 injection (3PhMG group, n = 30), and 30 ewes were used as control group. Pregnancy was diagnosed on day 50 after the release of ram. In study 2, 60 ewes were randomly divided into two equal groups. In the treated group with antibiotics (n = 30), before inserting, the sponges were impregnated with the antibiotic penicillin G sodium (5,000,000 IU) and in the control group (n = 30), there was no added antibiotics. Before inserting and after removing sponges, a vaginal cytology sample was taken with a sterile cotton swab. The number of neutrophils in each sample was counted and analysed. The rate of oestrus and total pregnancy was greater in SeCG (96.7, 93.3%), ShMG (82.8, 93.1%) and 3PhMG (67.9, 89.3%) groups compared with the control group (13.8, 41.4%) (p < .05). No significant difference was found in single, twin and total lambing and pregnancy rates after injection of eCG and hMG during the non-breeding season (p > .05). A higher percentage of control ewes had the vaginal smear with neutrophils more than 50% (96.7% vs. 76.7%; p < .05). In conclusion, a single dose of hMG can induce fertile oestrus in synchronized ewes with P4 administered by either injection or intravaginally. Purulent discharge and percentage of neutrophils were significantly reduced in the synchronized ewes by the impregnated sponges with the antibiotic penicillin.
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Affiliation(s)
| | - Abdolah Mirzaei
- Department of Clinical Sciences, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
| | - Abbas Zeyghami
- Veterinarian and Management of Arian Veterinary Hospital, Gonbad-e Qabus, Iran
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Samir H, Swelum AA, Abdelnaby EA, El-Sherbiny HR. Incorporation of L-Carnitine in the OvSynch protocol enhances the morphometrical and hemodynamic parameters of the ovarian structures and uterus in ewes under summer climatic conditions. BMC Vet Res 2023; 19:246. [PMID: 37996926 PMCID: PMC10668402 DOI: 10.1186/s12917-023-03814-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 11/10/2023] [Indexed: 11/25/2023] Open
Abstract
Heat stress negatively impacts the reproductive performance of sheep including the efficiency of estrous synchronization regimens. This study aimed to investigate the potential effects of L-Carnitine (LC) administration on the efficacy of the OvSynch protocol in ewes under summer climatic conditions. Ewes were synchronized for estrus using the OvSynch protocol and a dose of LC (20 mg/kg body weight) was intravenously (IV) administered on the same day of PGF2α injection to one group (n = 8; LC group), while other ewes (n = 8; control group) received the same protocol without LC. Ultrasonographic evaluation (including B-mode, color, and pulsed Doppler) was used to assess the morphometrical and hemodynamic parameters of ovarian structures [number, size, and blood flow of follicles (GFs) and corpora lutea (CLs)] and uterus during the estrous phase (Day 0), and on Day 8 post ovulation (luteal phase). Uterine artery blood flow (MUA) was assessed by measuring the resistive index (RI) and pulsatility index (PI) at both stages. The serum samples were collected to measure the concentrations of estradiol (E2), progesterone (P4), and total antioxidant capacity (TAC) using commercial kits. Results revealed a significant (P<0.05) increase in the colored pixel area of GFs and uterus in the LC group (392.84 ± 31.86 and 712.50 ± 46.88, respectively) compared to the control one (226.25 ± 17.74 and 322 ± 18.78, respectively) during Day 0. Circulating E2 and TAC levels were significantly (P<0.05) higher in the LC-treated ewes (31.45 ± 1.53 pg/ml and 1.80 ± 0.13 mM/L, respectively) compared to those in the control ewes (21.20 ± 1.30 pg/ml and 0.98 ± 0.09 mM/L, respectively) during Day 0. Moreover, LC improved the colored pixel area of CLs (2038.14 ± 102.94 versus 1098 ± 82.39) and uterus (256.38 ± 39.28 versus 121.75 ± 11.36) and circulating P4 (2.99 ± 0.26 ng/ml versus1.67 ± 0.15 ng/ml) on Day 8. Values of RI of MUA were significantly lower in the LC group compared to the control one on Day 0 and Day 8 (0.48 ± 0.03 versus 0.72 ± 0.03 and 0.58 ± 0.03 versus 0.78 ± 0.02, respectively). In conclusion, LC incorporation in the OvSynch protocol enhanced the morphometrical and hemodynamic parameters of the ovarian structures and the uterus concomitantly with improvements in the TAC, E2, and P4 concentrations in ewes under hot summer conditions.
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Affiliation(s)
- Haney Samir
- Department of Theriogenology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
| | - Ayman A Swelum
- Department of Theriogenology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Elshymaa A Abdelnaby
- Department of Theriogenology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
| | - Hossam R El-Sherbiny
- Department of Theriogenology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt.
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Yu X, Bai Y, Yang J, Zhao X, Zhang L, Wang J. Comparison of Five Protocols of Estrous Synchronization on Reproductive Performance of Hu Sheep. Front Vet Sci 2022; 9:843514. [PMID: 35464353 PMCID: PMC9019657 DOI: 10.3389/fvets.2022.843514] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Accepted: 02/17/2022] [Indexed: 11/16/2022] Open
Abstract
The purpose of this study is to compare five protocols of estrous synchronization for Hu ewes to obtain the most effective and economical protocol, to apply the advantageous scheme in large-scale sheep farming. Healthy multiparous Hu ewes (n = 150) were randomly divided into five groups, and all ewes were administered fluorogestone acetate (FGA, 45 mg) vaginal sponge. The sponges of the first three groups (Groups I, II, and III) were removed on the 11th day, and 0.1 mg of PGF2α was injected intramuscularly on the ninth day. Group I received 6 μg of gonadotropin-releasing hormone (GnRH) by intramuscular injection at 36th h after withdrawal of the sponge. Group II was injected 330 IU of pregnant mare serum gonadotropin (PMSG) on the ninth day. The combination of 6 μg of GnRH and 330 IU of PMSG was treated in Group III at the same time as Group I and Group II. The sponges of the latter two groups (Groups IV and V) were removed on the 13th day, and 330 IU of PMSG was injected intramuscularly simultaneously. PGF2α (0.1 mg) was administered on the 12th day in Group IV. All ewes were detected for estrus at 24, 36, 48, 60, and 72 h after the sponge removal. The loss of sponge and vaginitis was recorded when the sponge was withdrawn. Cervical artificial insemination (AI) was performed with fresh semen of Dorper rams diluted with skimmed milk. After 30 days of insemination, the conception was detected with a veterinary B-ultrasound scanner. The lambing status of all ewes and the cost of drugs for estrous synchronization in each group were recorded. The results showed the following: (1) on the whole, the average percentage of estrous ewes in the period of 24–36 h and 36–48 h after removal was significantly higher than other three periods and that of the period of 60–72 h was significantly lower than the first three periods after removal; (2) there was no significant difference in percentages of estrous ewes in any of the five time periods, sponge loss rate, vaginitis rate, total percentage of estrous ewes, conception rate, single lambing rate, twinning rate, and multiple lambing rate of ewes among five protocols; (3) total percentage of estrous ewes and conception rate were more than or equal to 80% in the Groups II and III, and the twinning lamb rate of the Group II protocol was 70%; (4) there was no difference in lambing rate of ewes among Groups II, III, IV, and V; (5) the Group III had the highest drug cost of 22.5 CNY. In conclusion, considering the lambing rate, twinning lamb rate, and drug cost for estrous synchronization, Group II was the most advisable for application and promotion in large-scale sheep farms among these five protocols of estrus synchronization.
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Affiliation(s)
- Xiaojie Yu
- College of Animal Science and Technology, Hebei North University, Zhangjiakou, China.,Hebei Mutton Sheep Innovation Strategic Alliance, Zhangjiakou, China
| | - Yuanyuan Bai
- College of Animal Science and Technology, Hebei North University, Zhangjiakou, China.,Hebei Mutton Sheep Innovation Strategic Alliance, Zhangjiakou, China
| | - Jiangfeng Yang
- College of Animal Science and Technology, Hebei North University, Zhangjiakou, China.,Hebei Mutton Sheep Innovation Strategic Alliance, Zhangjiakou, China
| | - Xiaokun Zhao
- College of Animal Science and Technology, Hebei North University, Zhangjiakou, China.,Hebei Mutton Sheep Innovation Strategic Alliance, Zhangjiakou, China
| | - Lei Zhang
- College of Animal Science and Technology, Hebei North University, Zhangjiakou, China.,Hebei Mutton Sheep Innovation Strategic Alliance, Zhangjiakou, China
| | - Jing Wang
- College of Animal Science and Technology, Hebei North University, Zhangjiakou, China.,Hebei Mutton Sheep Innovation Strategic Alliance, Zhangjiakou, China
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Silva ROD, Oliveira RPMD, Silva AF, Oliveira FFD, Rufino JPF, Silva MLMD. Effect of different protocols for estrus synchronization on reproductive performance of Santa Inês ewes under Amazon environmental conditions. ACTA SCIENTIARUM: ANIMAL SCIENCES 2020. [DOI: 10.4025/actascianimsci.v43i1.48954] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The objective of this study was to evaluate the effect of different hormonal protocols on the reproductive performance of Santa Inês ewes in Amazon environmental conditions. Twenty-two Santa Inês ewes between 3 and 4 years-old were distributed in a randomized block experimental design, where the treatments consisted of two protocols for estrus synchronization (short and long) with eleven animals each. Data on the occurrence of estrus were described for each protocol. Data of estrus, pregnancy, and prolificity were firstly subjected to ANOVA and a subsequent Tukey’s test. Results were considered significant at p ≤ 0.05. The short-term protocol presented an interesting successful rate, where above 70% ewes tested had estrus. The long-term protocol also achieved a high successful rate, where above 80% ewes tested had estrus. However, comparing the protocols, the long-term protocol presented better results of positive estrus and pregnancy rates in ewes. Thus, it can be concluded that both protocols presented satisfactory results regarding estrus manifestation, and prolificity (lambs produced per ewe). However, under Amazon environmental conditions, the long-term protocol presented better results regarding positive manifestation of estrus and pregnancy rate.
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Yu XJ, Wang J, Bai YY. Estrous synchronization in ewes: The use of progestogens and prostaglandins. ACTA AGR SCAND A-AN 2019. [DOI: 10.1080/09064702.2019.1674373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- X. J. Yu
- College of Animal Science and Technology, Hebei North University, Zhangjiakou, People’s Republic of China
| | - J. Wang
- College of Animal Science and Technology, Hebei North University, Zhangjiakou, People’s Republic of China
| | - Y. Y. Bai
- College of Animal Science and Technology, Hebei North University, Zhangjiakou, People’s Republic of China
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Hasani N, Ebrahimi M, Ghasemi-Panahi B, HosseinKhani A. Evaluating reproductive performance of three estrus synchronization protocols in Ghezel ewes. Theriogenology 2018; 122:9-13. [DOI: 10.1016/j.theriogenology.2018.07.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 06/16/2018] [Accepted: 07/07/2018] [Indexed: 01/07/2023]
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Montes-Quiroz GL, Sánchez-Dávila F, Grizelj J, Bernal-Barragán H, Vazquez-Armijo JF, Bosque-González ASD, Luna-Palomera C, González Gómez A, Ledezma-Torres RA. The reinsertion of controlled internal drug release devices in goats does not increase the pregnancy rate after short oestrus synchronization protocol at the beginning of the breeding season. JOURNAL OF APPLIED ANIMAL RESEARCH 2017. [DOI: 10.1080/09712119.2017.1386109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
| | | | - Juraj Grizelj
- Facultad de Medicina Veterinaria, Universidad de Zagreb, Zagreb, Croatia
| | - Hugo Bernal-Barragán
- Facultad de Agronomía, Universidad Autonoma de Nuevo León, Laboratorio de Nutrición y calidad de los alimentos, Campus de ciencias agropecuarias, General Escobedo, México
| | | | | | - Carlos Luna-Palomera
- División de Ciencias Agropecuarias 86280, Universidad Autónoma de Juárez de Tabasco, Villahermosa, México
| | - Adán González Gómez
- Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, México
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Suocheng W, Zhuandi G, Li S, Haoqin L, Luju L, Yingying D. Maturation rates of oocytes and levels of FSHR, LHR and GnRHR of COCs response to FSH concentrations in IVM media for sheep. J Appl Biomed 2017. [DOI: 10.1016/j.jab.2017.01.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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