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Periovulatory Hormonal Profiles after Estrus Induction and Conception Rate by Fixed-Time AI in Payoya Goats during the Anestrous Season. Animals (Basel) 2022; 12:ani12202853. [PMID: 36290241 PMCID: PMC9597795 DOI: 10.3390/ani12202853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 10/12/2022] [Accepted: 10/19/2022] [Indexed: 11/20/2022] Open
Abstract
Simple Summary Standardized induction and synchronization treatments and AI timing are used in goats, despite the fact that physiological differences can be linked to the breed, which could compromise the achievement of the AI programs in autochthonous breeds. However, few, if any, studies have been carried out to explore the reproductive physiology in the autochthonous breeds, in contrast to the commercial breeds. We studied the periovulatory hormone-release in Payoya goats, an autochthonous, endangered Spanish breed, and some differences were detected between the pregnant and non-pregnant goats. We observed a lower LH peak in those goats that failed to get pregnant, whilst other periovulatory hormones showed a similar release pattern in both groups. The results suggest that the LH peak should be favored to increase the success of fixed-time artificial insemination programs, and further studies should be conducted to understand the cause of this diminished LH release during the preovulatory surge. Abstract Sexual activity in domestic goats is positively influenced by reducing the photoperiod. Various protocols have therefore been developed in goats for the induction and synchronization of estrus during those months in which their sexual activity is reduced. The present observational study evaluates the periovulatory hormonal profile in Payoya goats (n = 24), during a non-favorable photoperiod (i.e., spring), being treated for estrus induction. The treatment comprised the vaginal insertion of sponges impregnated with progestogen (fluorogestone acetate, FGA), together with cloprostenol and equine chorionic gonadotrophin (eCG), 48 h before the end of the treatment. When the treatment ended, the plasma concentrations of the LH, FSH, progesterone and estradiol were determined. The goats were inseminated 46 h after the sponge withdrawal, and a pregnancy diagnosis was carried out 40–45 days after the insemination. Various parameters were monitored, such as the peaks of luteinizing hormone (LH), follicle-stimulating hormone (FSH) and estradiol, and their respective intervals, in reference to the time of the sponge withdrawal. The conception rate was 62.5%, and the kidding rate was 50%. The results record the hormonal release pattern after the estrus synchronization treatment based on the FGA, and the differences between the pregnant and non-pregnant goats. The findings suggest that the LH peak produced after the estrus synchronization treatment, both in terms of the amplitude and the time of increment, is involved in the reproductive failure detected.
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Zarazaga L, Gatica M, Delgado-Pertíñez M, Hernández H, Guzmán J, Delgadillo J. Efficacy of long day photoperiod treatment with respect to age of bucks for stimulation of the “male effect” on does at Mediterranean latitudes. Small Rumin Res 2022. [DOI: 10.1016/j.smallrumres.2022.106712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Gore D, Okeno T, Muasya T, Mburu J. Improved response to selection in dairy goat breeding programme through reproductive technology and genomic selection in the tropics. Small Rumin Res 2021. [DOI: 10.1016/j.smallrumres.2021.106397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Effect of Sperm Concentration and Storage Temperature on Goat Spermatozoa during Liquid Storage. BIOLOGY 2020; 9:biology9090300. [PMID: 32961716 PMCID: PMC7564667 DOI: 10.3390/biology9090300] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/14/2020] [Accepted: 09/17/2020] [Indexed: 12/31/2022]
Abstract
The use of cooled semen is relatively common in goats. There are a number of advantages of cooled semen doses, including easier handling of artificial insemination (AI) doses, transport, more AI doses per ejaculate, and higher fertility rates in comparison with frozen AI doses. However, cooled semen has a short shelf life. The objective of this study was to examine the effect of temperature and sperm concentration on the in vitro sperm quality during liquid storage for 48 h, including sperm motility and kinetics, response to oxidation, mitochondrial membrane potential (MMP) and DNA fragmentation in goats. Three experiments were performed. In the first, the effects of liquid preservation of semen at different temperatures (5 °C or 17 °C), durations (0, 24 and 48 h) and sperm concentrations (250 × 106 sperm/mL (1:2 dilution rate), 166.7 × 106 sperm/mL (1:3 dilution rate) or 50 × 106 sperm/mL (1:10 dilution rate)) on sperm motility and kinetics were studied. In the second experiment, the effect of temperature, sperm washing and concentration on sperm motility and DNA fragmentation was studied. Finally, the effect of sperm concentration and duration of storage at 5 °C on sperm motility, response to oxidative stress and MMP was examined. We found that refrigerated liquid storage of goat sperm impaired sperm quality, such as motility, MMP and response to oxidation, as storage time increased; however, sperm DNA fragmentation index was not significantly affected. Liquid storage at 5 °C preserved higher total motility than at 17 °C. Moreover, we observed that the reduction of sperm concentration below 500 × 106 sperm/mL did not seem to improve the quality of spermatozoa conserved in milk-based extender in the conditions tested.
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Murtaza A, Khan MIUR, Abbas M, Hameed N, Ahmad W, Mohsin I, Tahir MZ. Optimal timing of artificial insemination and changes in vaginal mucous characteristics relative to the onset of standing estrus in Beetal goats. Anim Reprod Sci 2019; 213:106249. [PMID: 31987315 DOI: 10.1016/j.anireprosci.2019.106249] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Revised: 10/01/2019] [Accepted: 11/21/2019] [Indexed: 11/25/2022]
Abstract
The current study was conducted to determine the optimal timing of artificial insemination and vaginal mucous characteristics relative to the onset of estrus in goats. Does (n = 257) were estrous synchronized using hormonal treatments. Intracervical inseminations with fresh semen were performed at 0, 12, 24 and 36 h after the onset of estrus. Characteristics of vaginal mucus (i.e., color, consistency, and volume) were observed and graded at the time of AI to calculate cumulative mucous score. The vaginal electrical resistance (VER) was recorded (Draminski® detector) at the time of AI. Pregnancy rate was less (P < 0.05) when inseminations occurred at 0 h (28.6%) compared with 12 (58.3%) and 24 h (56.4%) after the onset of estrus; however, pregnancy rate at 36 h (54.5%) did not differ (P> 0.05) compared with inseminations at 0, 12 or 24 h after estrous onset. Relative odds for pregnancy rate at 12, 24 and 36 h were 5.24, 5.20 and 3.29 times greater compared with 0 h. Cumulative mucous score varied (P < 0.05) relative to the onset of estrus and correlated well (P < 0.05) with the color and consistency than volume of the mucus. The VER was less (P < 0.05) at 12 than 0 and 36 h after estrous onset. In conclusion, goats can be inseminated between 12-36 h after the onset of estrus; however, the chances of pregnancy are greater with inseminations at the 12 or 24 h time periods.
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Affiliation(s)
- Ali Murtaza
- Department of Theriogenology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | | | - Mustansar Abbas
- Department of Theriogenology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Nasir Hameed
- Department of Theriogenology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Waqas Ahmad
- Department of Theriogenology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Imran Mohsin
- Department of Livestock Production, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Muhammad Zahid Tahir
- Department of Theriogenology, University of Veterinary and Animal Sciences, Lahore, Pakistan
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Agossou D, Koluman N. The effects of natural mating and artificial insemination using cryopreserved buck semen on reproductive performance in Alpine goats. Arch Anim Breed 2018; 61:459-461. [PMID: 32175453 PMCID: PMC7065385 DOI: 10.5194/aab-61-459-2018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Accepted: 11/20/2018] [Indexed: 11/23/2022] Open
Abstract
This study compared the effects of natural mating and artificial insemination using frozen buck semen on reproductive performance in Alpine goats. Sixty reproductive Alpine goats were grouped according to natural mating ( n = 30 ) and artificial insemination ( n = 30 ) breeding methods. Oestrus was synchronised in experimental goats using a vaginal sponge impregnated with 20 mg of progestogen FGA (fluorogestone acetate) for 11 days. At the time of sponge insertion, 150 µ g of prostaglandin F2 α (PGF2 α ) analogue was injected intramuscularly. Forty-eight hours prior to vaginal sponge withdrawal, 500 IU equine chorionic gonadotropin (eCG) was injected into the animals. At the end of synchronisation protocol, goats were fertilised using frozen semen or mated with a well-performing buck (ratio: 1 male to 5 females). The pregnancy (pregnant/synchronised goats) and mortality rates ( P < 0.05 ) were higher (93 % vs. 70 %; 2 % vs. 4 %) in the naturally mated goats than the artificially inseminated group. Kids' live weight at birth was similar ( 3.83 ± 0.23 and 3.15 ± 0.11 kg) in both groups. The oestrus synchronisation followed by natural mating achieved better reproductive performance than the goats artificially inseminated using frozen semen. However, the artificially inseminated animals displayed an acceptable twinning rate.
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Affiliation(s)
| | - Nazan Koluman
- Department of Animal Science, Çukurova University, Adana, 01330, Turkey
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Abecia JA, Arrébola F, Macías A, Laviña A, González-Casquet O, Benítez F, Palacios C. Temperature and rainfall are related to fertility rate after spring artificial insemination in small ruminants. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 2016; 60:1603-1609. [PMID: 26951115 DOI: 10.1007/s00484-016-1150-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Revised: 01/20/2016] [Accepted: 02/23/2016] [Indexed: 06/05/2023]
Abstract
A total number of 1092 artificial inseminations (AIs) performed from March to May were documented over four consecutive years on 10 Payoya goat farms (36° N) and 19,392 AIs on 102 Rasa Aragonesa sheep farms (41° N) over 10 years. Mean, maximum, and minimum ambient temperatures, mean relative humidity, mean solar radiation, and total rainfall on each insemination day were recorded. Overall, fertility rates were 58 % in goats and 45 % in sheep. The fertility rates of the highest and lowest deciles of each of the meteorological variables indicated that temperature and rainfall had a significant effect on fertility in goats. Specifically, inseminations that were performed when mean (68 %), maximum (68 %), and minimum (66 %) temperatures were in the highest decile, and rainfall was in the lowest decile (59 %), had a significantly (P < 0.0001) higher proportion of does that became pregnant than did the ewes in the lowest decile (56, 54, 58, and 49 %, respectively). In sheep, the fertility rates of the highest decile of mean (62 %), maximum (62 %), and minimum (52 %) temperature, RH (52 %), THI (53 %), and rainfall (45 %) were significantly higher (P < 0.0001) than were the fertility rates among ewes in the lowest decile (46, 45, 45, 45, 46, and 43 %, respectively). In conclusion, weather was related to fertility in small ruminants after AI in spring. It remains to be determined whether scheduling the dates of insemination based on forecasted temperatures can improve the success of AI in goats and sheep.
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Affiliation(s)
- J A Abecia
- IUCA. Departmento Producción Animal y Ciencia de los Alimentos, Facultad de Veterinaria, Miguel Servet, 177, 50013, Zaragoza, Spain.
| | - F Arrébola
- IFAPA, Ctra El Viso, km 15. 14270 Hinojosa del Duque, Córdoba, Spain
| | - A Macías
- Asociación Nacional de Ganaderos de la Raza Rasa Aragonesa (ANGRA), Cabañera Real, s/n, 50800 Zuera, Zaragoza, Spain
| | - A Laviña
- Asociación Nacional de Ganaderos de la Raza Rasa Aragonesa (ANGRA), Cabañera Real, s/n, 50800 Zuera, Zaragoza, Spain
| | | | - F Benítez
- IFAPA, Ctra El Viso, km 15. 14270 Hinojosa del Duque, Córdoba, Spain
| | - C Palacios
- Departmento Construcción y Agronomía, Facultad de Ciencias Agrarias y Ambientales, Filiberto Villalobos, 37007, Salamanca, Spain
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Yotov SA, Velislavova DV, Dimova LR. Pregnancy rate in Bulgarian White milk goats with natural and synchronized estrus after artificial insemination by frozen semen during breeding season. ASIAN PACIFIC JOURNAL OF REPRODUCTION 2016. [DOI: 10.1016/j.apjr.2016.01.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Arrébola F, Palacios C, Gil MJ, Abecia JA. Management and meteorological factors affect fertility after artificial insemination in Murciano-Granadina goats. ANIMAL PRODUCTION SCIENCE 2016. [DOI: 10.1071/an15176] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Over 6 years, 2004 artificial inseminations (AI) were documented from 13 goat farms. We quantified the effect on fertility rate of management factors (farm, year, month, timing and order of insemination, dose of progestagen, prostaglandin, equine chorionic gonadotrophin and prostaglandin doses, age, technician, problems at AI, body condition and buck) and meteorological conditions at AI (mean, maximum and minimum temperatures, mean relative humidity, mean solar radiation, and total rainfall). Meteorological variables were converted to categorical variables to quartiles and deciles. Overall fertility was 56%. Each of the management factors had a significant (P < 0.05) effect on fertility. Non-pregnant goats differed significantly in most of the meteorological variables. Successful inseminations were associated with significantly (P < 0.001) higher mean, maximum and minimum temperatures, and solar radiation, and lower relative humidity, and rainfall, than were failed inseminations. Fertility rates of the highest and lowest deciles were significantly different for each of the meteorological variables. Inseminations performed when meteorological values were in the highest decile of mean (62%), maximum (61%) and minimum temperature (60%), and solar radiation (59%), and the lowest of relative humidity (61%) and rainfall (57%) had a significantly (P < 0.0001) higher proportion of does that became pregnant than when meteorological values were within the opposite decile (47%; 34%; 55%; 46%; 45%, and 43%, respectively). In conclusion, management and meteorological factors affected the success of AI in goats. Although technical factors can be controlled, it remains to be determined whether scheduling the dates of insemination based on forecasted temperatures can improve the success of AI.
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Palacios C, Abecia JA. Meteorological variables affect fertility rate after intrauterine artificial insemination in sheep in a seasonal-dependent manner: a 7-year study. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 2015; 59:585-592. [PMID: 25056126 DOI: 10.1007/s00484-014-0872-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Revised: 06/24/2014] [Accepted: 07/11/2014] [Indexed: 06/03/2023]
Abstract
A total number of 48,088 artificial inseminations (AIs) have been controlled during seven consecutive years in 79 dairy sheep Spanish farms (41° N). Mean, maximum and minimum ambient temperatures (Ts), temperature amplitude (TA), mean relative humidity (RH), mean solar radiation (SR) and total rainfall of each insemination day and 15 days later were recorded. Temperature-humidity index (THI) and effective temperature (ET) have been calculated. A binary logistic regression model to estimate the risk of not getting pregnant compared to getting pregnant, through the odds ratio (OR), was performed. Successful winter inseminations were carried out under higher SR (P < 0.01) and summer inseminations under lower SR values (P < 0.05). Successful inseminations during the summer were performed under significantly lower maximum T (P < 0.01), while winter inseminations resulted in pregnancy when they were carried out under higher maximum (P < 0.05) and minimum Ts (P < 0.01). Up to five meteorological variables presented OR >1 (maximum T, ET and rainfall on AI day, and ET and rainfall on day 15), and two variables presented OR <1 (SR on AI day and maximum T on day 15). However, the effect of meteorological factors affected fertility in opposite ways, so T becomes a protective or risk factor on fertility depending on season. In conclusion, the percentage of pregnancy after AI in sheep is significantly affected by meteorological variables in a seasonal-dependent manner, so the parameters such as temperature reverse their effects in the hot or cold seasons. A forecast of the meteorological conditions could be a useful tool when AI dates are being scheduled.
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Affiliation(s)
- C Palacios
- Departamento de Construcción y Agronomía, Facultad de Ciencias Agrarias y Ambientales, Filiberto Villalobos, 37007, Salamanca, Spain
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