title: Vascularization of broad ligament of uterus and its relationship with fetal and placental development in gilts.
abstract: The objective of this study was to evaluate the influence of vascular architecture of broad ligament of the uterus on fetal and placental development in gilts. Fifteen gilts DB-90 (DanBred) were divided into three groups according to gestational age at slaughter (50, 80, and 106 days). After slaughter, fetuses and placentas were collected, weighed, and measured. The uterine arterial system was detached by latex repletion for quantification of the number and diameter of the terminal vessels in different regions of the uterine horns (apex, middle region, and base). Fetal and placental measurements were statistically analyzed and correlated with the number and diameter of arteries in each uterine segment. No correlation was observed (P > 0.10) between the number and diameter of arteries destined to the uterus with the number or weight of fetuses or placental weight in any gestational group. It was observed (P < 0.05) that more vessels destined to the medium region of the uterine horns, independent of the gestational age or uterus side. At the 80th day of gestation, fetuses located at the base of the uterus have (P < 0.05) smaller cephalic and thoracic perimeters. It was concluded that there were differences in vascularization of broad ligament that irrigates the different uterine segments, but this was not sufficient to influence the development of fetuses in gilts. The middle region of the uterine horns was the segment with a greater number of vessels, regardless of gestational age.
authors.affiliation: Department of Veterinary Medicine, Federal University of Lavras, Lavras, Minas Gerais, Brazil. Electronic address: gregorio@dmv.ufla.br.
authors.forename: Gregório C
authors.initials: GC
authors.lastname: Guimarães
authors.affiliation: Department of Veterinary Medicine, Federal University of Lavras, Lavras, Minas Gerais, Brazil.
authors.forename: Rafael P
authors.initials: RP
authors.lastname: Betarelli
authors.affiliation: Department of Veterinary Medicine, Federal University of Lavras, Lavras, Minas Gerais, Brazil.
authors.forename: Márcio G
authors.initials: MG
authors.lastname: Zangeronimo
authors.affiliation: Department of Animal Science, Federal University of Lavras, Lavras, Minas Gerais, Brazil.
authors.forename: Marvio L T
authors.initials: ML
authors.lastname: Abreu
authors.affiliation: Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
authors.forename: Fernanda R C L
authors.initials: FR
authors.lastname: Almeida
authors.affiliation: Department of Veterinary Medicine, Federal University of Lavras, Lavras, Minas Gerais, Brazil.
authors.forename: Matheus C B
authors.initials: MC
authors.lastname: Rosa
authors.affiliation: Department of Veterinary Medicine, Federal University of Lavras, Lavras, Minas Gerais, Brazil.
authors.forename: Lívia G
authors.initials: LG
authors.lastname: Ferreira
authors.affiliation: Department of Veterinary Medicine, Federal University of Lavras, Lavras, Minas Gerais, Brazil.
authors.forename: Lorena A
authors.initials: LA
authors.lastname: Alves
authors.affiliation: Department of Veterinary Medicine, Federal University of Lavras, Lavras, Minas Gerais, Brazil.
authors.forename: Caio K
authors.initials: CK
authors.lastname: Assis
authors.affiliation: Department of Veterinary Medicine, Federal University of Lavras, Lavras, Minas Gerais, Brazil.
authors.forename: Gabriela C
authors.initials: GC
authors.lastname: Lopes
mesh_terms: D000818:Animals; D001956:Broad Ligament / Q000033:anatomy & histology / Q000098:blood supply*; D005260:Female; D047109:Fetal Development; D018919:Neovascularization, Physiologic; D010920:Placenta / Q000033:anatomy & histology / Q000098:blood supply; D010929:Placentation; D011247:Pregnancy; D013552:Swine / Q000033:anatomy & histology / Q000254:growth & development / Q000502:physiology*
keywords: Anatomy; Fetal position; Gestation; Nonuniform litter; Uterine artery