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Cardona-García M, Jiménez-Escobar C, Ferrer MS, Maldonado-Estrada JG. Follicular Dynamics and Pregnancy Rates during Foal Heat in Colombian Paso Fino Mares Bred under Permanent Grazing. Animals (Basel) 2024; 14:760. [PMID: 38473144 DOI: 10.3390/ani14050760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 01/19/2024] [Accepted: 01/24/2024] [Indexed: 03/14/2024] Open
Abstract
No studies have evaluated the peripartum follicular dynamics resulting in foal heat under tropical environments. We aimed to assess retrospectively the peripartum follicular dynamics in Colombian Paso Fino mares that were inseminated at the foal heat, becoming pregnant or not. Records including follicular dynamics of pregnant mares prepartum and from foaling until foal heat ovulation were assessed in Colombian Paso Fino mares (CPF, n = 24) bred under permanent grazing in a tropical herd in Colombia. The number of ovarian follicles >10 mm before foaling and the largest follicle (F1) growth rate (mm/day) from foaling until the F1 reached the largest diameter (pre-ovulatory size) at the foal heat were assessed. Mares were inseminated at foal heat with 20 mL of semen (at least 500 million live spermatozoa) with >75% motility and 80% viability from a stallion of proven fertility. Ovulation was confirmed the day after follicles had reached the largest diameter. Quantitative data from follicular growth, the day at ovulation, from mares that became pregnant (PM) or not (NPM) at 16 days post-insemination were compared by one-way ANOVA, repeated measures ANOVA (follicle growth rate data) or Chi-square test (edema and cytology scores data). Epidemiological data, gestation length, and the number of follicles on third prepartum days did not significantly differ between PM and NPM (p > 0.05). Seventy-one percent of mares (17/24) got pregnant. Ovulatory follicles grew faster in the NPM group (n = 7), which ovulated between the seventh and ninth postpartum days, compared to PM (n = 17), which ovulated between the 11th and 13th postpartum days. Pre-ovulatory follicle diameter in PM (48.57 ± 0.8 mm) was significantly larger than in NPM (42.99 ± 1.0 mm) (p < 0.05). In addition, the PM edema score (2.93 ± 0.32 mm) on ovulation day was significantly lower (p < 0.05) than NPM (4.47 ± 0.05 mm). First postpartum ovulation occurred at 12.6 ± 0.3 and 8.5 ± 0.4 days (p < 0.05) in PM and NPM, respectively. Colombian Paso Fino mares bred under permanent grazing under tropical rainforest conditions with no foaling or postpartum complications showed a 71% gestation rate when inseminated at foal heat when ovulation occurs between the second and third postpartum week.
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Affiliation(s)
- Mauricio Cardona-García
- OHVRI-Research Group, Faculty of Agrarian Sciences, College of Veterinary Medicine, University of Antioquia, Medellín 050034, Colombia
| | - Claudia Jiménez-Escobar
- Grupo de Investigación en Reproducción Animal y Salud de Hato, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional de Colombia, Bogotá 111321, Colombia
| | - María S Ferrer
- College of Veterinary Medicine, The University of Georgia, Athens, GA 30602, USA
| | - Juan G Maldonado-Estrada
- OHVRI-Research Group, Faculty of Agrarian Sciences, College of Veterinary Medicine, University of Antioquia, Medellín 050034, Colombia
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Segabinazzi LGTM, Gilbert RO, Ambrosia RL, Bergfelt DR, Samper JC, Peterson EW, French HM. Structural and Functional Dynamics of the Ovary and Uterus during the Estrous Cycle in Donkeys in the Eastern Caribbean. Animals (Basel) 2022; 13:ani13010074. [PMID: 36611684 PMCID: PMC9817998 DOI: 10.3390/ani13010074] [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: 11/24/2022] [Revised: 12/11/2022] [Accepted: 12/21/2022] [Indexed: 12/28/2022] Open
Abstract
Eight non-bred, non-pregnant, regularly cycling Caribbean jennies were examined daily via transrectal ultrasound to define the ovarian and uterine dynamics during four consecutive estrous cycles. Blood samples were collected every other day for progesterone analysis. The mean (±SD) overall inter-ovulatory interval across all donkeys and cycles was 22.93 ± 1.99 days. The maximum follicular diameter was 34.6 ± 2.9 mm. A two-wave pattern was evident in 97% (30/31) of the cycles. The emergence of the future dominant follicle and the largest subordinate follicle of the major primary wave coincided on Day 5.7 ± 3.6 post-ovulation, whereas the secondary wave emerged on Day 19.8 ± 2.9 during estrus of the previous cycle or early diestrus. The secondary wave was often minor (93%, 28/30 cycles). Follicular deviation occurred 8.2 ± 1.4 days before the subsequent ovulation. Luteal volume increased for the first four days after ovulation and reached a maximum volume of 8.5 ± 2.7 mm3 at Day 5.4 ± 0.4, before gradually regressing after Day 15. Serum progesterone concentration increased from Day 1 after ovulation, peaking at 27.0 ± 9.6 ng/mL between 7 and 10 days after ovulation. Progesterone concentration dropped precipitously around Day 15 after ovulation and was below 2 ng/mL around Day 17 ± 2. A day effect (p < 0.0001) was observed for corpus luteum’s volume, progesterone concentration, and uterine tone, but not for endometrial edema (p > 0.05). This study helps to clarify and define normal estrous characteristics of jennies in the Eastern Caribbean.
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Quaresma M, Ramalheira-Martins S, Nóvoa M, Camillo F, Payan-Carreira R. Follicular dynamics during the non-reproductive season in Miranda jennies. Reprod Domest Anim 2022; 57:616-624. [PMID: 35191106 DOI: 10.1111/rda.14102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 02/20/2022] [Indexed: 11/29/2022]
Abstract
Jennies' follicular wave patterns have not yet been addressed during the non-breeding and transition seasons in anestrus jennies. Twelve non-pregnant females of the Miranda donkey breed were followed to describe follicular waves characteristics during the non-reproductive season and determine the anestrous effect in follicular wave patterns. Five jennies enrolled in this study experienced anestrus during the non-breeding season, but all retained the continuous emergence of follicular waves. The average duration of the waves from emergence to peak was 11.2±0.021 days (3-29 days). The duration of the different type of waves was 9.91±0.034 days for minor waves,12.5±0.232 days for major secondary waves and 12.5±0.057 for major primary waves. The major waves were significantly longer than the minor waves (P<0.001). Older jennies presented longer waves (P=0.021). In the jennies presenting anestrus, the wave duration during anestrus (11.2±0.125 days, n=31) was not different from the waves detected in the preceding and subsequent ovulatory cycles (11.3±0.084 days, n=43) (P=0.978). The number of follicular waves emerging in each ovulatory cycle (n=59) was 2.36±0.011 , varied from 1 to 4. Only in a small proportion of cycles one wave (0.8%) was recorded, with 41 cycles (67.2%) presenting two waves; fourteen cycles presenting three waves (24.6%) and three cycles (6.6%) showing 4 waves.
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Affiliation(s)
- M Quaresma
- Center of Animal and Veterinary Science (CECAV), University of Trás-os-Montes e Alto Douro (UTAD), Quinta de Prados, 5000-801, Vila Real, Portugal.,UTAD, Quinta de Prados, 5000-801, Vila Real, Portugal
| | | | - Miguel Nóvoa
- Association for the Study and Protection of Donkeys (AEPGA), Largo da Igreja, 5225 - 011, Atenor, Portugal
| | | | - Rita Payan-Carreira
- CHRC - Comprehensive Health Research Centre & Dept. of Veterinary Medicine, ECT, Universidade de Évora (Mitra Centre), Évora, Portugal
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Hormonal Management for the Induction of Luteolysis and Ovulation in Andalusian Jennies: Effect on Reproductive Performance, Embryo Quality and Recovery Rate. Animals (Basel) 2022; 12:ani12020143. [PMID: 35049767 PMCID: PMC8772578 DOI: 10.3390/ani12020143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 01/04/2022] [Accepted: 01/06/2022] [Indexed: 11/17/2022] Open
Abstract
Two prostanglandins (luprostiol, LUP, and dinoprost, DIN) and two ovulation-inducing agents (human Chorionic Gonadotropin, hCG, and deslorelin, DES) were evaluated for luteolysis and estrus induction, and for ovulation induction, respectively, in embryo donor jennies. Twenty-six fertile Andalusian jennies were used. In Experiment 1, jennies (n = 112 cycles) were randomly treated with either LUP or DIN after embryo flushing. In Experiment 2, donors (n = 84 cycles) were randomly treated with either hCG or DES to induce ovulation. No differences were found between prostaglandins for all variables studied (prostaglandin–ovulation interval (POI), interovulatory interval (IOI), embryo recovery rate (ERR), positive flushing rate (PFR) and embryo grade (EG)). The ovulation rate was similar for hCG and DES (60.9% vs. 78.7%). However, the interval to ovulation (ITO) was affected (62.61 ± 7.20 vs. 48.79 ± 2.69 h). None of the other variables studied (ERR, PFR and EG) were affected (p > 0.05), except for embryo quality (p = 0.009). In short, both prostaglandins evaluated are adequate to induce luteolysis and estrus. Both ovulation-inducing agents hastened ovulation, but DES seems to be more effective than hCG. Follicular diameter affected the interval from treatment to ovulation, and high uterine edema was related to low embryo quality.
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Song JL, Sun YJ, Liu GQ, Zhang GL. Deoxynivalenol and zearalenone: Different mycotoxins with different toxic effects in donkey (Equus asinus) endometrial epithelial cells. Theriogenology 2021; 179:162-176. [PMID: 34879314 DOI: 10.1016/j.theriogenology.2021.11.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 11/03/2021] [Accepted: 11/28/2021] [Indexed: 11/18/2022]
Abstract
Deoxynivalenol (DON) and zearalenone (ZEA), which are commonly found in feed products, exhibit serious negative effects on the reproductive systems of domestic animals. However, the toxicity of mycotoxins on the uterine function of donkey (Equus asinus) remains unclear. This study investigated the biological effects of DON and ZEA exposure on donkey endometrial epithelial cells (EECs). It was administered 10 μM and 30 μM DON and ZEA to cells cultured in vitro. The results showed that 10 μM DON exposure markedly changed the expression levels of pyroptosis-associated genes and that 30 μM ZEA exposure changed the expression levels of inflammation-associated genes in EECs. The mRNA expression of cancer-promoting genes was markedly upregulated in cells exposed to DON and 30 μM ZEA; in particular, 10 μM and 30 μM DON and ZEA markedly disturbed the expression of androgen and estrogen secretion-related genes. Furthermore, Q-PCR, Western blot, and immunofluorescence analyses verified the different expression patterns of related genes in DON- and ZEA-exposed EECs. Collectively, these results illustrated the impact of exposure to different toxins and concrete toxicity on the mRNA expression of EECs from donkey in vitro.
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Affiliation(s)
- Jun-Lin Song
- Qingdao Agricultural University, Qingdao, Shandong, 266109, China
| | - Yu-Jiang Sun
- Qingdao Agricultural University, Qingdao, Shandong, 266109, China
| | - Gui-Qin Liu
- College of Agronomy, Liaocheng University, Liaocheng, Shandong, 252059, China; Shandong Donkey Industry Technology Collaborative Innovation Center, Liaocheng, Shandong, 252059, China
| | - Guo-Liang Zhang
- Qingdao Agricultural University, Qingdao, Shandong, 266109, China.
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Li N, Yang F, Yu J, Yang W, Wu S, Ma J, Liu B, Zhang R, Zhou X, Losinno L, Miragaya MH, Zeng S. Characteristics of follicular dynamics and reproductive hormone profiles during oestrous cycles of jennies over an entire year. Reprod Domest Anim 2021; 56:448-458. [PMID: 33368622 DOI: 10.1111/rda.13883] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 12/22/2020] [Indexed: 11/29/2022]
Abstract
Although donkeys have been domesticated for over 6,000 years, limited information is available concerning their reproductive physiology, especially under intensive rearing conditions. The aims of this experiment were to study follicular dynamics and reproductive hormone variation in jennies during the inter-ovulatory interval in different seasons. A total of 12 continuous cycles of six Dezhou Black (DB) donkey jennies were examined in four different seasons. The diameters of the six largest follicles of each jenny were measured daily by ultrasonography, and blood samples were collected at fixed times for reproductive hormone assays. The results demonstrated that most jennies displayed regular oestrous cycles in all seasons. The follicular dynamics were similar in Spring, Summer and Winter, while the jennies had longer oestrous cycles with delayed follicular deviation and dominant selection in Autumn. At least two follicular waves were observed in each oestrous cycle, throughout the study, but two jennies presented oestrous cycles with three follicular waves in the Autumn. The numbers of follicular waves were consistent with the numbers of FSH surges. Oestrous characteristics of the jennies in a large herd were also analysed. The results showed that the rates of regular oestrous cycles were 83.1% (265/319), 89.6% (215/240), 80.2% (235/293) and 77.1% (178/231), with 26.4% (70/265), 19.5% (42/215), 22.1% (52/235) and 23.0% (41/178) double ovulation rates in Spring, Summer, Autumn and Winter, respectively. The results presented may be useful for donkey farms in the design of breeding strategies.
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Affiliation(s)
- Nan Li
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Feng Yang
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Jie Yu
- National Engineering Research Center for Gelatin-based Traditional Chinese Medicine, Dong-E-E-Jiao Co. Ltd., Done-E Country, China
| | - Weigang Yang
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Shuaishuai Wu
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China.,National Engineering Research Center for Gelatin-based Traditional Chinese Medicine, Dong-E-E-Jiao Co. Ltd., Done-E Country, China
| | - Jinliang Ma
- College of Animal Science and Technology, Yang Zhou University, Jiangsu, China
| | - Bing Liu
- National Engineering Research Center for Gelatin-based Traditional Chinese Medicine, Dong-E-E-Jiao Co. Ltd., Done-E Country, China
| | - Ruitao Zhang
- National Engineering Research Center for Gelatin-based Traditional Chinese Medicine, Dong-E-E-Jiao Co. Ltd., Done-E Country, China
| | - Xiangshan Zhou
- National Engineering Research Center for Gelatin-based Traditional Chinese Medicine, Dong-E-E-Jiao Co. Ltd., Done-E Country, China
| | - Luis Losinno
- Laboratory of equine Production, Faculty of Agriculture and Veterinary Medicine, National University of Rio Cuarto, Rio Cuarto, Argentina
| | - Marcelo H Miragaya
- Institute of Research and Technology in animal reproduction, Faculty of Veterinary Science, University of Buenos Aires, Buenos Aires, Argentina
| | - Shenming Zeng
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
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Dorado J, Bottrel M, Ortiz I, Díaz-Jiménez M, Pereira B, Consuegra C, Carrasco JJ, Gómez-Arrones V, Domingo A, Hidalgo M. Factors Affecting Embryo Recovery Rate, Quality, and Diameter in Andalusian Donkey Jennies. Animals (Basel) 2020; 10:ani10111967. [PMID: 33114673 PMCID: PMC7693601 DOI: 10.3390/ani10111967] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 10/22/2020] [Accepted: 10/25/2020] [Indexed: 11/16/2022] Open
Abstract
Simple Summary Embryo transfer has been successfully used for the conservation of equine endangered species, but a number of factors may affect the outcome of these techniques in mares. However, only a few studies have evaluated these factors in donkeys. The present study was conducted to determine which factors affect the recovery rate, morphological quality, and diameter in embryos from Andalusian donkey jennies. According to our results, the factors affecting embryo recovery rate were donor jenny, donor age, successive cycle within donor, number of flushings, and jack. Day of flushing and number of flushings had an effect on embryo diameter, whereas donor jenny and day of flushing had an effect on embryo quality. The knowledge of these factors is crucial to achieve a higher efficiency of embryo transfer in endangered donkey breeds. Abstract Embryo transfer and the vitrification of embryos could be used for the conservation and recovery of endangered donkey breeds. It is important to develop techniques that optimize recovery rates and the cryotolerance of donkey embryos. This study evaluates factors affecting the recovery rate, quality, and diameter of embryos obtained from donor jennies as a starting point for the use of vitrification and embryo transfer in the conservation of the Andalusian donkey. A total of 100 embryos were recovered out of 124 estrous cycles (80.6%). The donor jenny affected the rates of positive flushings (PFR; p = 0.040) and embryo recovery (ERR; p < 0.05) as well as embryo quality (p = 0.004). ERR was also affected by the number of flushings (p < 0.001), donor age (p < 0.05), successive cycle within donor (p < 0.001), and jacks (p < 0.05). Number of flushings (p < 0.001) and jack (p < 0.05) had a significant effect on PFR, whereas the day of flushing influenced the developmental stage (p < 0.001), embryo quality (p < 0.05), and diameter of embryos (p < 0.001). The number of flushings significantly influenced the diameter (p = 0.038) and embryo developmental stage (p = 0.001), whereas the developmental stage was statistically different between herds (p = 0.020). The factors influencing the success of this assisted reproductive technique were donor jenny, donor age, successive cycle within donor, day of flushing, number of flushings, and jack. The identification of these key points is crucial to achieve a higher efficiency of embryo transfer and vitrification processes, before considering their application in the conservation of endangered donkey breeds.
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Affiliation(s)
- J. Dorado
- Veterinary Reproduction Group, Department of Medicine and Animal Surgery, Faculty of Veterinary Medicine, University of Cordoba, 14071 Cordoba, Spain; (M.B.); (I.O.); (M.D.-J.); (B.P.); (C.C.); (M.H.)
- Correspondence: ; Tel.: +34-957-212-136
| | - M. Bottrel
- Veterinary Reproduction Group, Department of Medicine and Animal Surgery, Faculty of Veterinary Medicine, University of Cordoba, 14071 Cordoba, Spain; (M.B.); (I.O.); (M.D.-J.); (B.P.); (C.C.); (M.H.)
| | - I. Ortiz
- Veterinary Reproduction Group, Department of Medicine and Animal Surgery, Faculty of Veterinary Medicine, University of Cordoba, 14071 Cordoba, Spain; (M.B.); (I.O.); (M.D.-J.); (B.P.); (C.C.); (M.H.)
| | - M. Díaz-Jiménez
- Veterinary Reproduction Group, Department of Medicine and Animal Surgery, Faculty of Veterinary Medicine, University of Cordoba, 14071 Cordoba, Spain; (M.B.); (I.O.); (M.D.-J.); (B.P.); (C.C.); (M.H.)
| | - B. Pereira
- Veterinary Reproduction Group, Department of Medicine and Animal Surgery, Faculty of Veterinary Medicine, University of Cordoba, 14071 Cordoba, Spain; (M.B.); (I.O.); (M.D.-J.); (B.P.); (C.C.); (M.H.)
| | - C. Consuegra
- Veterinary Reproduction Group, Department of Medicine and Animal Surgery, Faculty of Veterinary Medicine, University of Cordoba, 14071 Cordoba, Spain; (M.B.); (I.O.); (M.D.-J.); (B.P.); (C.C.); (M.H.)
| | - J. J. Carrasco
- Equine Reproduction Center, Centro de Selección y Reproducción Animal, (CENSYRA-Extremadura Government), 06007 Badajoz, Spain; (J.J.C.); (V.G.-A.); (A.D.)
| | - V. Gómez-Arrones
- Equine Reproduction Center, Centro de Selección y Reproducción Animal, (CENSYRA-Extremadura Government), 06007 Badajoz, Spain; (J.J.C.); (V.G.-A.); (A.D.)
| | - A. Domingo
- Equine Reproduction Center, Centro de Selección y Reproducción Animal, (CENSYRA-Extremadura Government), 06007 Badajoz, Spain; (J.J.C.); (V.G.-A.); (A.D.)
| | - M. Hidalgo
- Veterinary Reproduction Group, Department of Medicine and Animal Surgery, Faculty of Veterinary Medicine, University of Cordoba, 14071 Cordoba, Spain; (M.B.); (I.O.); (M.D.-J.); (B.P.); (C.C.); (M.H.)
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Oliveira SN, Segabinazzi LGTM, Canuto L, Lisboa FP, Medrado FE, Dell'Aqua JA, Aguiar AJA, Papa FO. Comparative Efficacy of Histrelin Acetate and hCG for Inducing Ovulation in Brazilian Northeastern Jennies (Equus africanus asinus). J Equine Vet Sci 2020; 92:103146. [PMID: 32797776 DOI: 10.1016/j.jevs.2020.103146] [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: 03/30/2020] [Revised: 05/12/2020] [Accepted: 05/25/2020] [Indexed: 10/24/2022]
Abstract
The goal of this study was to compare the efficiency of histrelin acetate (GnRH analog) and human chorionic gonadotropin (hCG) to hasten ovulation in Brazilian Northeastern jennies (Equus africanus asinus). Thirty cycles of ten jennies were randomly assigned in one of the three groups: G0 (control group), saline; G1, 250 μg of histrelin acetate; G2, 2500 IU of hCG. Jennies were evaluated by transrectal palpation and ultrasonography, and had the administration of an ovulation-inducing agent when a follicle measuring between 29 and 32 mm of diameter was diagnosed. Jennies were monitored every 6 hours by transrectal ultrasonography until ovulation. The interval between prostaglandin administration and ovulation was lower (P < .05) in jennies from the G1 (145.2 ± 34.6 hours) and G2 (147.4 ± 27.3 hours) groups compared with the control cycle (220.0 ± 41.8 hours). Both treatments (G1, 41.15 ± 3.5 hours; G2, 37.8 ± 2.5 hours) also reduced (P < .05) the interval that jennies took to ovulate after the administration of the ovulation-inducing agent compared with the control (81.8 ± 28.8 hours). All jennies from G1 and G2 ovulated up to 48 hours after ovulation induction, whereas 100% of jennies in the control cycle ovulated later (>48 hours from the administration of saline). In conclusion, both histrelin acetate and hCG at the used dose are efficient ovulation-inducing agents in jennies promoting ovulation up to 48 hours after administration.
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Affiliation(s)
- Sidnei N Oliveira
- Sao Paulo State University (Unesp), School of Veterinary Medicine and Animal Science, Botucatu, Brazil.
| | - Lorenzo G T M Segabinazzi
- Sao Paulo State University (Unesp), School of Veterinary Medicine and Animal Science, Botucatu, Brazil
| | - Lucas Canuto
- Sao Paulo State University (Unesp), School of Veterinary Medicine and Animal Science, Botucatu, Brazil
| | | | - Felipe E Medrado
- Sao Paulo State University (Unesp), School of Veterinary Medicine and Animal Science, Botucatu, Brazil
| | - Jose A Dell'Aqua
- Sao Paulo State University (Unesp), School of Veterinary Medicine and Animal Science, Botucatu, Brazil
| | - Antonio J A Aguiar
- Sao Paulo State University (Unesp), School of Veterinary Medicine and Animal Science, Botucatu, Brazil
| | - Frederico O Papa
- Sao Paulo State University (Unesp), School of Veterinary Medicine and Animal Science, Botucatu, Brazil
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Canisso IF, Panzani D, Miró J, Ellerbrock RE. Key Aspects of Donkey and Mule Reproduction. Vet Clin North Am Equine Pract 2019; 35:607-642. [PMID: 31672204 DOI: 10.1016/j.cveq.2019.08.014] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Donkeys are nonseasonal, polyestrous, territorial, and nonharem breeders. Although there are many similarities between horses and donkeys, there are also reproductive features that differ, from the longer cervix in the jenny to spermatogenic efficiency in the jack. Mules display reproductive cyclic activity but are rarely fertile. Frozen donkey semen has high pregnancy rates in mares, but lower rates in jennies. This article reviews key aspects of donkey and mule reproductive physiology, reproductive medicine, and assisted reproductive techniques that are useful for practitioners offering assisted reproductive techniques, and also for practitioners with the occasional client with a basic reproductive question.
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Affiliation(s)
- Igor Federico Canisso
- Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois Urbana-Champaign, Urbana, IL 61802, USA.
| | - Duccio Panzani
- Department of Veterinary Science, University of Pisa, Pisa 56122, Italy
| | - Jordi Miró
- Department of Animal Medicine and Surgery, Faculty of Veterinary Medicine, Autonomous University of Barcelona, 08193 Bellaterra, Barcelona, Spain
| | - Robyn E Ellerbrock
- Department of Large Animal Medicine, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USA
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10
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Mazzatenta A, Veronesi MC, Vignola G, Ponzio P, Carluccio A, De Amicis I. Behavior of Martina Franca donkey breed jenny-and-foal dyad in the neonatal period. J Vet Behav 2019. [DOI: 10.1016/j.jveb.2019.07.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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11
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Histrelin acetate-induced ovulation in Brazilian Northeastern jennies (Equus asinus) with different follicle diameters. Theriogenology 2019; 136:95-100. [PMID: 31254727 DOI: 10.1016/j.theriogenology.2019.06.037] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 06/12/2019] [Accepted: 06/19/2019] [Indexed: 12/17/2022]
Abstract
The aim of the present study was to evaluate the efficacy of a GnRH analog for induction of ovulation in Brazilian Northeastern jennies (Equus asinus) with different follicle diameters. Four consecutive estrus of 10 jennies were used in a crossover study; C (Control, n = 10) jennies were evaluated by transrectal palpation and ultrasonography until a spontaneous ovulation and the intervals between the predetermined follicular size (25-28 mm [C1], 29-32 mm [C2] and 33-36 mm [C3] follicle) and ovulation were registered. In treated cycle, jennies had the ovulation induced by 250 μg of Histrelin acetate (Strelin®, Botupharma, Botucatu, Brazil) when respective follicle diameters 25-28 mm (T1), 29-32 mm (T2) and 33-36 mm (T3) were diagnosed. Ovulation was monitored by transrectal palpation and ultrasonography. Different follicle diameters significantly affected (P < 0.05) the interval until ovulation between control and matched treated cycles. Interval between prostaglandin administration and ovulation diagnosis was lower in jennies from T2 group (145.2 ± 34.6 h) compared with the control cycle (220.0 ± 41.8 h) and also with other treated cycles (T1 - 209.8 ± 48.0 h; T3 - 183.3 ± 33.9 h). Histrelin acetate treatment also reduces the interval between detection of predetermined follicular size and ovulation (P < 0.05) in all treated cycles groups compared with matched control group. Higher percentage (P < 0.05) of jennies had success of ovulation induction (36-48 h after Histrelin acetate injection) in all treated cycles in contrast with the matched control group. In addition, in comparison among treated cycle groups, more (P < 0.05) jennies (100%) in T2 ovulated between 36 and 48 h after ovulation induction, compared with T1 and T3, which did not differ (P > 0.05) from each other. Edema scoring and ovulation were not associated events (r = 0.0219). In conclusion, jennies with 29-32 mm follicles satisfactory responded to ovulation induction with Histrelin acetate, which allowed the shortening of interovulatory interval in all groups evaluated.
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Effect of the administration of alfaprostol 3 or 6 days after ovulation in jennies: ultrasonographic characteristic of corpora lutea and serum progesterone concentration. Theriogenology 2018; 121:175-180. [DOI: 10.1016/j.theriogenology.2018.08.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 08/04/2018] [Accepted: 08/07/2018] [Indexed: 11/18/2022]
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Yang F, Wu S, Zhou J, Yang W, Liu B, Zhang R, Ma J, Yu J, Ji C, Zeng S. The Proportion of Multiple-ovulation Changes Among Different Months in Dezhou Black Jennies. J Equine Vet Sci 2018. [DOI: 10.1016/j.jevs.2018.05.192] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Ovarian dynamics and estrous cycle length in the donkey (Equus asinus). Theriogenology 2017; 103:1-8. [DOI: 10.1016/j.theriogenology.2017.07.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 06/26/2017] [Accepted: 07/09/2017] [Indexed: 11/20/2022]
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