Autoclaved, previously used intravaginal progesterone devices induces estrus and ovulation in anestrous Toggenburg goats

Souza, Juliana; Torres, C. A. A.; Maia, A. L. R. S.; Brandão, F. Z.; Bruschi, J. H.; Viana, J. H. M.; Oba, Eunice; Fonseca, J. F.

doi:10.1016/j.anireprosci.2011.09.012

Cited by 37 publications

(36 citation statements)

References 27 publications

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“…A similar percentage (80%) was reported in the Alpine breed (Fonseca et al, 2010). The number of ovulations averaged 1.8, similar to that reported by our group in Saanen goats in Alpine (1.7; Fonseca et al, 2010) or Toggenburg breed (1.7; Souza et al, 2011).…”

Section: Discussionsupporting

confidence: 77%

“…In Southeastern Brazil, commercial dairy systems using specialized dairy breed regularly must induce or synchronize estrus in order to obtain a good amount of milk throughout the year. In anestrous goats, a combination of progestagens, gonadotropins and prostaglandins is the most used program to induce estrus (Souza et al, 2011). However, the use of progestagens is under review in some countries, due to issues related to public health (output of chemical residues in food, which has led to them being banned in the United States and has caused the enforcement of the regulation in maximum residue limits in the European Union) and animal welfare (causes of potential problems, such as vaginitis and/or sponge retention; Martins et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Reproductive parameters of dairy goats submitted to estrus synchronization with prostaglandin F2α associated or not to hCG at estrous onset

Esteves

Brandão

Cruz

et al. 2013

Arq. Bras. Med. Vet. Zootec.

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The objective of this study was to evaluate the efficiency of two doses of PGF associated or not to hCG on the associated reproductive parameters in dairy goats. A total of 29 goats received two doses of 30μg d-cloprostenol latero-vulvar at a 10 day intervals (Day 1 and Day 10). The does were allocated according to body weight and body condition score into two treatments, to receive hCG (250IU) or saline at estrus onset. After the second dose of PGF, estrus was monitored and ultrasound exams were performed twice daily. All does were inseminated 16h after estrus onset. Blood collection was performed every day for progesterone assay. The use of hCG at estrus onset did not affect any studied parameter and therefore the data were pooled.

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Section: Discussionsupporting

confidence: 77%

Section: Introductionmentioning

confidence: 99%

Reproductive parameters of dairy goats submitted to estrus synchronization with prostaglandin F2α associated or not to hCG at estrous onset

Esteves

Brandão

Cruz

et al. 2013

Arq. Bras. Med. Vet. Zootec.

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“…This fact was not observed in the current study perhaps because the long-term treatment used herein was not as extended as in other studies. A total of 83% of goats ovulated; similar to the 96% previously described (Souza et al, 2011). One female ovulated before demonstrating estrus signs, perhaps by function of dominant-subordinate relationships (Orihuela, 2000).…”

Section: Discussionsupporting

confidence: 52%

“…This difference was greater in previous reports when 85% and 73% of Toggenburg goats showed estrus in the morning using similar protocols with MAP or CIDR, respectively (Souza et al, 2011). These reports suggest that the onset of estrus in goats is a phenomenon that occurs predominantly at night.…”

Section: Discussioncontrasting

confidence: 36%

“…Longterm treatment with intravaginal progestagen (10 to 18 days) has been shown to be associated with falling fertility (Viñoles et al, 2001;Diskin et al, 2002). A reduction in time of treatment with progestagens may facilitate handling and minimize the loss of implants, vaginal discharge and infection, without compromising fertility Souza et al, 2011). However, this subject still remains contradictory among researchers and more studies should be performed in order to investigate possible differences among treatments and also breeds.…”

Section: Introductionmentioning

confidence: 98%

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Short, medium or long-term hormonal treatments for induction of synchronized estrus and ovulation in Saanen goats during the nonbreeding season

et al. 2013

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-The objective of this study was to compare the effect of hormonal treatment duration through the use of intravaginal sponges impregnated with 60 mg MAP for 6 (G6; n = 10), 9 (G9; n = 10) or 12 (G12; n = 10) days. All nulliparous (n = 15) and lactating (n = 15) Saanen goats received 37.5 µg d-cloprostenol and 200 IU eCG 24 hours before sponge removal during the nonbreeding season. After sponge removal, estrus was monitored twice a day (06h00 and 18h00) by the use of fertile bucks. Transrectal ovarian ultrasonography was performed after device removal until ovulation detection. All goats were bred by artificial insemination (AI) or natural breeding (NB). All females received 250 IU hCG 5 d after AI or NB. No difference was observed among groups G6, G9 and G12 for: estrous response (90.0, 100.0 and 100.0%, respectively); interval from sponge removal to estrus (26.7±5.6, 25.2±2.8 and 25.2±3.3 hours), duration of estrus (28.5±7.1; 21.6±3.0 and 25.2±6.1 hours); ovulation rate (80.0, 100.0 and 70.0%); number of ovulations (1.9±0.2, 1.5±0.2 and 1.4±0.2); and pregnancy rate (60.0, 80.0 and 50.0%). Interval from sponge removal to ovulation was shorter in animals from G6 (44.6±2.2 hours) than for animals from G9 (52.8±2.7 hours) and G12 (60.0±4.5 hours). All treatments were effective in the induction of synchronized estrus in Saanen goats during the nonbreeding season, but ovulation occurred earlier when goats received sponges for 6 days.

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Estrous and ovulatory responses following cervical artificial insemination in Thai-native goats given a new or once-used controlled internal drug release with human chorionic gonadotropin

Navanukraw

Khanthusaeng

Kraisoon

et al. 2014

Trop Anim Health Prod

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The study was conducted to compare estrous rate, ovulatory response, plasma progesterone concentrations, and conception rate following cervical artificial insemination in goats given a new or once-used controlled internal drug release (CIDR) device with human chorionic gonadotropin (hCG). Fifty-six Thai-native goats with the average age and body weight of 11 months and 17.3 kg received a 14-day treatment with a new CIDR device (Eazi-Breed(TM)CIDR®, Pfizer, NY, USA) or a once-used CIDR device. All goats received a 300-IU injection of hCG (Chorulon®, Intervet International B.V., New Zealand) at the day of CIDR removal to induce ovulation. All goats displaying signs of Estrous behavior were artificially inseminated at 12 h after the onset of estrus with frozen semen. No differences in percentage of estrus and ovulation rates were observed; however, goats that received once-used CIDR devices exhibited shorter (P < 0.05) duration of estrus in comparison with new devices (21.4 ± 1.4 h vs. 26.1 ± 1.1 h) and delayed the onset of estrus (47.0 ± 3.6 h vs. 36.5 ± 1.9 h) and the time of ovulation (74.9 ± 3.9 h vs. 64.5 ± 1.3 h), respectively. Progesterone (P4) concentrations were not significantly different (P > 0.05) between treatments during CIDR device insertion and at the time of CIDR removal except on day 4. No significant differences were found in overall conception rates between the treatments. This study indicates that the once-used CIDR device with hCG could be applied to synchronize the estrus and ovulation in small-size Thai-native goats without negative effects on Estrous behavior, ovulatory response, and plasma P4 concentration.

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Autoclaved, previously used intravaginal progesterone devices induces estrus and ovulation in anestrous Toggenburg goats

Cited by 37 publications

References 27 publications

Reproductive parameters of dairy goats submitted to estrus synchronization with prostaglandin F2α associated or not to hCG at estrous onset

Reproductive parameters of dairy goats submitted to estrus synchronization with prostaglandin F2α associated or not to hCG at estrous onset

Short, medium or long-term hormonal treatments for induction of synchronized estrus and ovulation in Saanen goats during the nonbreeding season

Estrous and ovulatory responses following cervical artificial insemination in Thai-native goats given a new or once-used controlled internal drug release with human chorionic gonadotropin

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