PLURIPARITY IN MARES: RELATIONSHIP WITH MATERNAL, PLACENTAL, AND NEONATAL CHARACTERISTICS

Authors

  • Elena Carolina Serrano-Recalde Universidade de São Paulo
  • Juliana Cristina Queiroz-Silva Universidade de São Paulo
  • Carina de Fatima Guimarães Universidade de São Paulo
  • Mariana Matera Veras Universidade de São Paulo
  • Roberta Galvano Barbosa Medica Veterinaria Autônoma
  • Maria Augusta Alonso Universidade de São Paulo
  • Claudia Barbosa Fernandes Universidade de São Paulo

DOI:

https://doi.org/10.1590/cab18033567

Keywords:

Animal Reproduction

Abstract

The placenta connects the mare and the foal and it is one of the main organs responsible for fetal development and newborn’s morphometric characteristics. This function becomes even more important because a number of studies indicates that foals physical characteristics are able to predict their development in adult life. Therefore, the aim of this study was to correlate mares parity (1-5) and maternal characteristics with placental characteristics as well as foals size. Mares were categorized according to parity in G1: 1 parturation (n=4); G2: 2 parturations (n=6); G3: 3 parturations (n=7); G4: 4 parturations (n=5); and G5: 5 parturations (n=3). Results indicate that the mares pre- and post-parturition thoracic perimeter and weight had a positive correlation on foals weight (p=0.004/ R= 0.51; p=0.002/ R= 0.55; p=0.01/ R= 0.43), height (p=0.0005/ R= 0.60; p=0.001/ R= 0.57; p=0.005/ R= 0,50), and thoracic perimeter (p=0.0001/ R= 0.65; p?0.0001/ R= 0.71; p=0.0002/ R= 0.64) at birth. Mares that were heavier at pre-partum had greater placental weight (p=0.01/R= 0.45) and delivered heavier foals (p=0.003/ R= 0.52) with greater thoracic perimeter (p=0.01/ R= 0.45). Foals of mares in G4 were heavier, probably indicating that the greater uterine size in multiparous mares allows greater placental coverage, greater fetomaternal surface contact and probably greater supply of nutrient to the fetus.
Keywords: chorioallantoic membrane; equine; parturition; pregnancy.

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Author Biographies

Elena Carolina Serrano-Recalde, Universidade de São Paulo

Departamento de Reprodução Animal
Faculdade de Medicina Veterinária e Zootecnia

Juliana Cristina Queiroz-Silva, Universidade de São Paulo

Departamento de Reprodução Animal
Faculdade de Medicina Veterinária e Zootecnia

Carina de Fatima Guimarães, Universidade de São Paulo

Departamento de Reprodução Animal

Faculdade de Medicina Veterinária e Zootecnia

Mariana Matera Veras, Universidade de São Paulo

Departamento de Reprodução Animal
Faculdade de Medicina Veterinária e Zootecnia

Maria Augusta Alonso, Universidade de São Paulo

Departamento de Reprodução Animal
Faculdade de Medicina Veterinária e Zootecnia

Claudia Barbosa Fernandes, Universidade de São Paulo

Departamento de Reprodução Animal
Faculdade de Medicina Veterinária e Zootecnia

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Published

2017-06-23

How to Cite

SERRANO-RECALDE, E. C.; QUEIROZ-SILVA, J. C.; GUIMARÃES, C. de F.; VERAS, M. M.; BARBOSA, R. G.; ALONSO, M. A.; FERNANDES, C. B. PLURIPARITY IN MARES: RELATIONSHIP WITH MATERNAL, PLACENTAL, AND NEONATAL CHARACTERISTICS. Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 18, 2017. DOI: 10.1590/cab18033567. Disponível em: https://revistas.ufg.br/vet/article/view/e-33567. Acesso em: 16 aug. 2024.

Issue

Vol. 18 (2017): Continuous publication

Section

MEDICINA VETERINÁRIA

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