Banca de QUALIFICAÇÃO: IGOR MASTERSON DE FARIAS

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : IGOR MASTERSON DE FARIAS
DATE: 06/02/2026
TIME: 09:00
LOCAL: https://meet.google.com/rfp-ftrc-buu
TITLE:

Influence of parity on gestational and neonatal parameters in female donkeys of the Northeastern ecotype

KEY WORDS:

Donkey; Newborns; Multiparous; Primiparous

PAGES: 54
BIG AREA: Ciências Agrárias
AREA: Zootecnia
SUBÁREA: Produção Animal
SPECIALTY: Manejo de Animais
SUMMARY:

The Northeastern donkey is an ecotype adapted to the Brazilian Semi-arid region, which has developed adaptive, reproductive, and behavioral characteristics distinct from other donkey breeds, due to natural selection imposed by the Caatinga biome. In this context, the evaluation of reproductive and neonatal behavioral parameters is fundamental, as it allows us to understand reproductive efficiency, neonatal viability, and the animals' adaptation to the environment, supporting management strategies, genetic conservation, and improvement of animal production systems. This study investigated the influence of parity on gestational, placental, and neonatal parameters of 29 female donkeys and their foals, divided into primiparous and multiparous females, monitored from gestation to the immediate postpartum period. The statistical design used was completely randomized, divided into two treatments: primiparous and multiparous females. The females were subjected to controlled reproductive and nutritional management, associated with daily monitoring of mammary secretion pH, as an auxiliary tool for predicting parturition. During parturition and in the first hours of the foals' lives, the following parameters were recorded using an ethogram: female weight, gestation duration, parturition time, time to placental delivery, placental weight, placenta/mother weight, neonate weight, neonate/mother weight, and placenta/neonate weight; and neonatal variables: time to sternal recumbency, time to standing, suckling reflex, first suckling, first urination, and meconium passage. The data were subjected to ANOVA, and specifically, mammary pH data were subjected to Pearson correlation. The progressive reduction in mammary pH was similar between the groups, reaching a value of 6.4 close to parturition, which occurred approximately 39 hours after this value. The foals of multiparous mares were born heavier (18.92 ± 1.99) than those of primiparous mares (16.35 ± 2.27), a fact that was reflected in neonatal vigor, as they were quicker to stand (primiparous 46.25 ± 29.80 and multiparous: 22.90 ± 11.63), as well as to perform the first suckling (primiparous 93.50 ± 28.20 and multiparous 57.00 ± 21.62) faster. Although the foals of primiparous jennies were slower in the three aforementioned parameters, there was no difference between treatments for the other neonatal parameters evaluated. It is concluded that although parity does not alter gestational or placental parameters, it does have an impact on the development and initial agility of donkey neonates of the Northeastern ecotype.

COMMITTEE MEMBERS:
Presidente - ***.913.906-** - JULIANO MARTINS SANTIAGO - UFRPE
Externo ao Programa - 1046818 - LUIZ CARLOS FONTES BAPTISTA FILHO - UFAPEExterna à Instituição - FERNANDA MELO PEREIRA TARAN - UNIVASF