The Use of Vagina–Cervix Length Measurement in Evaluation of Future Reproductive Performance of Sows: A Preliminary Study under Commercial Conditions

Tuz, R.; Schwarz, Thomas; Małopolska, Martyna; Nowicki, J

doi:10.3390/ani9040158

Cited by 4 publications

(5 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although choline is known for its health benefits in adults, fetal development and other aspects of fertility [29], its specific role in the female reproductive tract and ovarian development has not yet been explored. Our findings demonstrate that choline increases reproductive tract development, which could increase future litter size, the number of live fetuses and the lifetime piglet production of female pigs [25,30]. In humans, the cervical length is inversely proportional to the risk of spontaneous preterm births in which those with the shortest cervical length have the highest risk of prematurity [31].…”

Section: Discussionmentioning

confidence: 69%

“…Oviduct length and ovary weight had no significant differences among treatment groups (Table 4, Ref. [25]). Overall backfat gain was lowest in the control group, with the Omega-3 group having significantly higher backfat gain compared to the control group (p < 0.05, Table 4), while the other groups had intermediate backfat gain.…”

Section: Resultsmentioning

confidence: 95%

“…After sacrifice, the whole reproductive tract was removed from the carcass and ovarian weight, oviduct length, and vagina-cervix length were measured. Vagina-cervix length was measured from the vulva to the uterine body, including the length of vagina and cervix (method described by Tuz R et al) [25]. The corpus luteum on both sides of the ovaries were counted.…”

Section: Animal Trialmentioning

confidence: 99%

See 2 more Smart Citations

Choline supplementation influences ovarian follicular development

Zhan¹,

Fletcher²,

Dingle³

et al. 2021

Front. Biosci. (Landmark Ed)

View full text Add to dashboard Cite

Introduction 3. Methods and materials 3.1 Animal trial 3.2 Histological analysis of ovarian tissues 3.3 Total RNA isolation and qRT-PCR 3.4 Reverse transcription and miRNA expression quantification 3.5 Hydrophilic interaction chromatography analysis of serum 3.6 Statistical analysis 4. Results 5. Discussion 6. Conclusions 7. Author contributions 8. Ethics approval and consent to participate 9. Acknowledgment 10. Funding 11. Conflict of interest 12. References

show abstract

Section: Discussionmentioning

confidence: 69%

Section: Resultsmentioning

confidence: 95%

Section: Animal Trialmentioning

confidence: 99%

See 1 more Smart Citation

Choline supplementation influences ovarian follicular development

Zhan¹,

Fletcher²,

Dingle³

et al. 2021

Front. Biosci. (Landmark Ed)

View full text Add to dashboard Cite

show abstract

“…The cervix of the first parity size is small [38], and whilst birthweight is often reduced also [39], foetal pelvic disproportion is the likely explanation for birth trauma in piglets born to sows of this youngest age. Even within parity, cervical size appears to be important [40]. In old sows however, birth trauma is due to reduced oxytocin levels and myometrial tone as discussed with reference to stillbirths in earlier paragraphs.…”

Section: Risk Factors For Birth Traumamentioning

confidence: 99%

Parturition and Its Relationship with Stillbirths and Asphyxiated Piglets

Langendijk¹,

Plush²

2019

Animals

View full text Add to dashboard Cite

Simple SummaryPiglets that experience a long labour are more likely to die during birth or immediately following birth, or to grow slowly during life. This is because the longer the piglet experiences contractions during labour, blood supply and oxygen delivery to the brain will be impaired. Even before the first piglet in the litter is born, sows that will have a delayed labour can be identified. This means that the key to saving piglets that are at risk of death because of long labours lies in managing the sow before she gives birth.AbstractThe transition from an intra- to extrauterine existence is extremely challenging for the pig. This is evidenced by the fact that conservative estimates place intrapartum piglet death at between 5% and 10%. The main cause of this loss is the parturition process itself, with a long farrowing duration resulting in reduced oxygenation to the piglet via uterine contractions stretching, and in some cases, causing rupture of the umbilical cord. Sows that experience a long expulsive stage of parturition are likely compromised before the birth of the first piglet, and so any strategy to reduce stillbirth should be applied before this. Even in piglets born alive, 15% to 20% will have suffered asphyxiation because of a long cumulative farrowing duration. These individuals are significantly disadvantaged with regards to behavioural progression, colostrum intake, growth and survival extending past the lactation phase, and so require more labour and resources than littermates in order to make them viable. Given these immediate and longer-term impacts, identifying ways to correctly manage the sow before parturition leading to a reduction in farrowing duration should be a priority in order to maximise piglet performance.

show abstract

“…The study of the reproductive tract of the gilt from birth to puberty showed important changes in the weight and length of the oviducts and the uterus when puberty was reached [20]. Recently, the length of vagina-cervix has been related to length and capacity of uterine horns [21,22]. A certain level of body condition would be needed for puberty onset in gilts [23]; also, fat mass was associated with puberty in female mammals [24].…”

mentioning

confidence: 99%

Determination of puberty in gilts: contrast of diagnostic methods

Vela

Suárez-Usbeck

Lafoz³

et al. 2022

Porc Health Manag

View full text Add to dashboard Cite

Background Early onset of a gilt´s puberty is needed for adequate economic performance in farms, because it indicates her reproductive performance and longevity. Therefore, an effective diagnosis is needed. Our purpose was to compare different procedures (external characteristics, blood progesterone analysis and ultrasonography diagnosis) to detect puberty in 70 gilts (Topigs TN70; 240 days old) on farm conditions. Postmortem examination was the standard reference. Multiple logistic regression analysis was used to identify which combination of independent variables (predictors) best predicts the status of gilts. Results Puberty (46/70 gilts; 65.71%) was characterized by the presence of follicles larger than 6 mm, corpus albicans, corpus rubrum, and corpus luteum (postmortem examination). Vaginal length, body condition, backfat, carcass weight and progesterone blood concentration were significantly higher in pubertal than prepubertal gilts (P < 0.05). Two types of ultrasonography equipment (DELTA and W3) were compared and performed by the same senior technician (V1). The results obtained by two technicians with different levels of experience (V1 and V2, a junior technician) using W3 were also compared. Ultrasonography provided better results than other diagnostic techniques, although the effectiveness of the ultrasonography changed with technological improvements and with increased expertise of technicians. The most accurate results were found by V1/DELTA (Nagelkerke´s R2 = 0.846; Sensitivity = 0.956; Specificity = 0.958; Positive predictive value = 0.978; Negative predictive value = 0.920; Area under ROC curve = 0.957). Results using the W3 equipment could be improved when used in conjunction with vaginal length (V1; Nagelkerke´s R2 = 0.834; Sensitivity = 0.933; Specificity = 0.958; Positive predictive value = 0.977; Negative predictive value = 0.885; Area under ROC curve = 0.972) or progesterone concentration (V2; Nagelkerke´s R2 = 0.780; Sensitivity = 0.955; Specificity = 0.826; Positive predictive value = 0.915; Negative predictive value = 0.905; Area under ROC curve = 0.970). Conclusions Ultrasonography provided better results than other diagnostic techniques. The effectiveness of the ultrasonography changes with technological improvements and with increased expertise of technicians. Results using the W3 equipment could be improved when used along with vaginal length (V1) or progesterone concentration (V2). Accuracy parameters are a guide to choose puberty diagnosis, but the farms must also evaluate effect on gilts, ease and cost of administration.

show abstract

The Use of Vagina–Cervix Length Measurement in Evaluation of Future Reproductive Performance of Sows: A Preliminary Study under Commercial Conditions

Cited by 4 publications

References 24 publications

Choline supplementation influences ovarian follicular development

Choline supplementation influences ovarian follicular development

Parturition and Its Relationship with Stillbirths and Asphyxiated Piglets

Determination of puberty in gilts: contrast of diagnostic methods

Contact Info

Product

Resources

About