Animal Reproduction (AR)
https://www.animal-reproduction.org/article/doi/10.1590/1984-3143-AR2020-0037
Animal Reproduction (AR)
Original Article

Estimated date of delivery in Chihuahua breed bitches, based on embryo-fetal biometry, assessed by ultrasonography

Catharina de Albuquerque Vieira; Rodrigo Freitas Bittencourt; Carmo Emanuel Almeida Biscarde; Maíra Planzo Fernandes; Alessandro Bitencourt Nascimento; Elton Amorim Romão; Isabella de Matos Brandão Carneiro; Mariana Alves de Andrade Silva; Renata Oliveira Barreto; Marcus Vinícius Galvão Loiola

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Abstract

Abstract: Due to the peculiarities of the reproductive cycle of the female dog, which makes it difficult to accurately ascertain the date of conception, it may be challenging to precisely estimate the gestational age in bitches. Using fetal measurements obtained by ultrasound, it is possible to estimate the gestational age in dogs; however, due to the differences in size of the various breeds, such estimates may have a significant standard deviation, which represents less accuracy when specifying the date of birth. The purpose of this study was to evaluate pregnant female Chihuahuas, establishing relations between the fetal dimensions measured by ultrasound and the remaining time until delivery. Using 13 pregnant female Chihuahuas, weekly ultrasound assessments and measurements were performed, of the inner chorionic cavity, cranial-caudal length, biparietal diameter, abdominal diameter and thoracic diameter. Such parameters were retroactively correlated to the date of delivery, and linear regressions were established between the gestational measurements and remaining days until delivery. The fetal measurement presenting the highest correlation (r = 0.99; P<0.0001) and reliability (R2 = 0.98, P<0.0001) with the probable date of delivery was the biparietal diameter, a measurement that can be easily and safely obtained and, when applying a specific formula (Y = -15.46X1 + 38.72), can accurately predict the date of delivery in Chihuahua female dogs.

Keywords

canine, gestational age, pregnancy, ultrasound

References

Beccaglia M, Alonge S, Trovo C, Luvoni GC. Determination of gestational time and prediction of parturition in dogs and cats: an update. Reprod Domest Anim. 2016;51(Suppl 1):12-7. http://dx.doi.org/10.1111/rda.12782. PMid:27670935.

Beccaglia M, Luvoni GC. Comparison of the accuracy of two ultrasonographic measurements in predicting the parturition date in the bitch. J Small Anim Pract. 2006;47(11):670-3. http://dx.doi.org/10.1111/j.1748-5827.2006.00108.x. PMid:17076791.

Bergström A, Nødtvedt ANE, Lagerstedt AS, Egenvall A. Incidence and breed predilection for dystocia and risk factors for cesarean section in a Swedish population of insured dogs. Vet Surg. 2006;35(8):786-91. http://dx.doi.org/10.1111/j.1532-950X.2006.00223.x. PMid:17187641.

Camargo NI, Berlim AT, Magalhães FJR, Manso Filho HC, Wischral A. Fetal biometry in Shih-Tzu female dogs by ultrasound. Vet Med [serial on the Internet]. 2011 [cited 2019 May 10];5:1-6. Available from: http://www.journals.ufrpe.br/index.php/medicinaveterinaria/article/view/643/522

Cecchetto M, Milani C, Vencato J, Sontas H, Mollo A, Contiero B, Romagnoli S. Clinical use of fetal measurements to determine the whelping day in German shepherd breed bitches. Anim Reprod Sci. 2017;184:110-9. http://dx.doi.org/10.1016/j.anireprosci.2017.07.005. PMid:28732669.

Concannon PW, Lein DH. Hormonal and clinical correlates of ovarian cycles, ovulation, pseudopregnancy, and pregnancy in dogs. In: Kirk R, editor. Current veterinary therapy small animal practice. 10th ed. Philadelphia: Saunders; 1989. p. 1269-82.

Concannon PW, Whaley S, Lein D, Wissler R. Canine gestation length: variation related to time of mating and fertile life of sperm. Am J Vet Res. 1983;44(10):1819-21. PMid:6685444.

Federation Cynologique Internationale – FCI. FCI-Standard N° 218: Chihuahua [Internet]. Belgique: FCI; 2010 [cited 2019 May 10]. Available from: http://www.fci.be/Nomenclature/Standards/218g09-en.pdf

Gaudet AD. Retrospective study of 128 cases of canine dystocia. J Am Anim Hosp Assoc. 1985;21:813-8.

Giannico AT, Gil EMU, Garcia DAA, Froes TR. The use of Doppler evaluation of the canine umbilical artery in prediction of delivery time and fetal distress. Anim Reprod Sci. 2015;154:105-12. http://dx.doi.org/10.1016/j.anireprosci.2014.12.018. PMid:25596637.

Gil EMU, Garcia DAA, Giannico AT, Froes TR. Canine fetal heart rate: do accelerations or decelerations predict the parturition day in bitches? Theriogenology. 2014;82(7):933-41. http://dx.doi.org/10.1016/j.theriogenology.2014.04.025. PMid:24888684.

Groppetti D, Vegetti F, Bronzo V, Pecile A. Breed-specific fetal biometry and factors affecting the prediction of whelping date in the German shepherd dog. Anim Reprod Sci. 2015;152:117-22. http://dx.doi.org/10.1016/j.anireprosci.2014.11.018. PMid:25510562.

Hase M, Hori T, Kawakami E, Tsutsui T. Plasma LH and progesterone levels before and after ovulation and observation of ovarian follicles by ultrasonographic diagnosis system in dogs. J Vet Med Sci. 2000;62(3):243-8. http://dx.doi.org/10.1292/jvms.62.243. PMid:10770594.

Jabin VCP, Finardi JC, Mendes FCC, Weiss RR, Kozicki LE, Moraes R. Use of ultrasonography exams to determinate the parturition day by Yorkshire canine breed. Arch Vet Sci. 2007;12:63-70. http://dx.doi.org/10.5380/avs.v12i1.9231.

Luvoni GC, Grioni A. Determination of gestational age in medium and small size bitches using ultrasonographic fetal measurements. J Small Anim Pract. 2000;41(7):292-4. http://dx.doi.org/10.1111/j.1748-5827.2000.tb03204.x. PMid:10976623.

Melo KCM, Souza DMB, Teixeira MLB, Amorim MJAAL, Wischral A. Ultrasonographic foetal measurement to estimate the parturition time in American Cocker Spaniel and Chow-chow bitches. Vet Sci Trop [serial on the Internet]. 2006 [cited 2019 May 10];9(1):23-30. Available from: https://www.bvs-vet.org.br/vetindex/periodicos/ciencia-veterinaria-nos-tropicos/9-(2006)-1/fetometria-ultra-sonografica-na-previsao-da-data-do-parto-em-cadelas-d/

Nyland TJ, Mattoon JS. Small animal diagnostic ultrasound. Philadelphia: WB Saunders; 2002.

O’Neill DG, O’Sullivan AM, Manson EA, Church DB, Boag AK, McGreevy PD, Brodbelt DC. Canine dystocia in 50 UK first-opinion emergency-care veterinary practices: prevalence and risk factors. Vet Rec. 2017;181(4):88-6. http://dx.doi.org/10.1136/vr.104108. PMid:28526775.

Papp Z, Fekete T. The evolving role of ultrasound in obstetrics/gynecology practice. Int J Gynaecol Obstet. 2003;82(3):339-46. http://dx.doi.org/10.1016/S0020-7292(03)00224-8. PMid:14499980.

Pieri NCG, Souza AFD, Casals JB, Roballo KCS, Ambrósio CE, Martins DDS. Comparative development of embryonic age by organogenesis in domestic dogs and cats. Reprod Domest Anim. 2015;50(4):625-31. http://dx.doi.org/10.1111/rda.12539. PMid:25990819.

Silva MRC, Sterman FDA, Almeida AH. Ultrasonographic mensuration of head dimentions in Boxers normal gestations and its correlation with the gestational age. Braz J Vet Res Anim Sci. 2007;44(Suppl.):25-9. http://dx.doi.org/10.11606/issn.1678-4456.bjvras.2007.26586.

Socha P, Janowski T. Comparison of three different fetometric formulas of ICC and BP for calculating the parturition date in a population of German Shepherd. Theriogenology. 2017;95:48-53. http://dx.doi.org/10.1016/j.theriogenology.2017.02.026. PMid:28460679.

Socha P, Janowski T. Specific fetometric formulas of ICC and BP for calculating the parturition date in the miniature breeds of canine. Reprod Domest Anim. 2018;53(2):545-9. http://dx.doi.org/10.1111/rda.13143. PMid:29399892.

Son CH, Jeong KA, Kim JH, Park IC, Kim SH, Lee CS. Establishment of the prediction table of parturition day with ultrasonography in small pet dogs. J Vet Med Sci. 2001;63(7):715-21. http://dx.doi.org/10.1292/jvms.63.715. PMid:11503898.

Teixeira MJ, Souza DMB, Melo KCM, Wischral Á. Estimation of parturition date through ultrasonographic foetal biometry in Rottweiler bitches. Braz Anim Sci [serial on the Internet]. 2009 [cited 2019 May 10];10:853-61. Available from: https://revistas.ufg.br/vet/article/view/1828

Traas AM. Surgical management of canine and feline dystocia. Theriogenology. 2008;70(3):337-42. http://dx.doi.org/10.1016/j.theriogenology.2008.04.014. PMid:18495232.
 


Submitted date:
04/10/2020

Accepted date:
07/06/2020

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