Influence of time of insemination relative to ovulation and frequency of insemination on gilt fertility

Bortolozzo, Fernando Pandolfo; Uemoto, Daniela Aparecida; Bennemann, Paulo Eduardo; Pozzobon, Mauro C.; Castagna, C.; Peixoto, Carlos H.; Barioni, W.; Wentz, Ivo

doi:10.1016/j.theriogenology.2005.04.023

Cited by 27 publications

(17 citation statements)

References 9 publications

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“…In domestic sows, these external changes occur as a response to the high concentrations of estradiol that promotes increased vascularization and blood flow, increased uterine tone and mucus secretion (Bortolozzo et al, 2005). Moreover, the predominance of superficial cells (52.2%) during the estrogen peak was observed in the present synchronized females, as also reported for females under natural estrous (Mayor et al, 2007b).…”

Section: Discussionsupporting

confidence: 80%

“…The body weight of female sows (> 100 kg) is, in general, larger than the females collared peccary (~20 kg) (Bortolozzo et al, 2005), the prostaglandin dose for peccaries was drastically reduced for 60 μg in double administration. However, it is necessary to emphasize that there are marked differences in reproductive physiology between swine and peccary.…”

Section: Discussionmentioning

confidence: 94%

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Estrous Synchronization in Captive Collared Peccaries (Pecari tajacu) using a Prostaglandin F2α Analog

et al. 2014

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We verify the efficiency of a protocol for estrus synchronization in captive female collared peccaries (Pecaricari tajacu) using the prostaglandin analog D-cloprostenol. Five adult female collared peccaries received an intramuscular administration of 60 µg D-cloprostenol, which procedure was repeated after a 9-day interval. For 10 days after second the D-cloprostenol administration, females were monitored for changes in external genitalia, ovarian ultrasonography, vaginal cytology and reproductive hormonal dosage. As a result, four females synchronized their estrous at 9.5 ± 0.5 days after the second administration of the prostaglandin analog. Such females showed external signs of estrus, including vulvar opening, hyperemic vaginal mucosa, and vaginal mucus, concomitant with an increase in the proportion of superficial cells (52.2 ± 9.9%) verified through vaginal cytology. An estrogen peak of 22.7 ± 3.4 pg/ml was detected by hormonal dosage, and the presence of anechoic follicles measuring 0.29 ± 0.05 × 0.32 ± 0.07 mm were detected in the ovary by ultrasonography. Given these findings, we suggest that D-cloprostenol may be effective for use in estrus synchronization in collared peccaries.

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Section: Discussionsupporting

confidence: 80%

Section: Discussionmentioning

confidence: 94%

Estrous Synchronization in Captive Collared Peccaries (Pecari tajacu) using a Prostaglandin F2α Analog

et al. 2014

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“…The interval from insemination to ovulation can influence the function of the sperm reservoir [99], egg fertilization, and embryo survival [100][101][102][103]. Optimal fertility is reported with insemination occurring 12 hours before ovulation in competitive fertilization tests [104], and within 24 hours before ovulation with a single AI for fertilization rate and numbers of embryos [99], and farrowing rate and litter size [105,106]. Inseminations occurring too early or too late during estrus and in relation to ovulation can reduce fertility [92], and occurring too late in estrus can even increase embryo loss and cause endometritis [107].…”

Section: Estrus Detection and Inseminationmentioning

confidence: 99%

Artificial insemination in pigs today

2016

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“…Interestingly, the optimal interval in gilts has been reported as 16 h (Bortolozzo et al. ). Regardless, sperm lifespan is also dependant on sperm age, it being shorter when time from collection exceeded 48 h and longer when the time was less than 48 h (Waberski et al.…”

Section: Breeding Managementmentioning

confidence: 99%

Advances in Breeding Management and Use of Ovulation Induction for Fixed‐time AI

Kirkwood

Kauffold²

2015

Reprod Domestic Animals

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ContentsThe objective of the breeding herd is the predictable and consistent production of high quality pigs. To achieve this objective, an appropriate number of females need to be mated in each breeding week and they should maintain their pregnancy and deliver large litters. Many factors can impact achievement of optimal sow productivity, particularly breeding management. Most matings will involve artificial insemination (AI), and successful AI requires deposition into the cervix (or beyond) of sufficient viable high quality sperm at an appropriate time relative to ovulation. This is facilitated by improved knowledge of the sow's ovarian function prior to and during her oestrous period. Realization of the importance of establishing an adequate sperm reservoir in the oviduct at an appropriate time relative to ovulation has led to advances in the management of AI. The future of AI will likely involve insemination of single doses of high genetic merit semen, potentially having a reduced sperm concentration which is made possible by knowledge of the effect of site of sperm deposition on sow fertility. In particular, knowledge of when a sow is likely to ovulate during a natural or induced oestrous period will prove invaluable in the maintenance of herd productivity. This review will examine options for breeding management, including the control of oestrus and ovulation, on sow herd reproductive performance.

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Influence of time of insemination relative to ovulation and frequency of insemination on gilt fertility

Cited by 27 publications

References 9 publications

Estrous Synchronization in Captive Collared Peccaries (Pecari tajacu) using a Prostaglandin F2α Analog

Estrous Synchronization in Captive Collared Peccaries (Pecari tajacu) using a Prostaglandin F2α Analog

Artificial insemination in pigs today

Advances in Breeding Management and Use of Ovulation Induction for Fixed‐time AI

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