Malformações congênitas e abortos induzidos experimentalmente pela ingestão de Poincianella pyramidalis (Tul.) L.P. Queiroz (catingueira) em ovelhas

Abstract

Poincianella pyramidalis (catingueira) is a toxic plant associated with abortions, embryonic losses and malformations in goats and laboratory animals. Outbreaks and sporadic cases of spontaneous intoxication in sheep have been reported in the last five years in the agreste of Pernambuco. Due to the occurrence of these spontaneous cases and the lack of researches in sheep, an experimental study was carried out to evaluate the teratogenic effects of P. pyramidalis on sheep. In the experiment, 16 female and three male sheeps, mixed breed, were used. Females were divided in four groups, with four animals per group and maintained in individual stalls, underwent estrus synchronization and mating by natural mating and after 30 days the diagnosis was made to confirm gestation. Groups were named group 1 (G1), group 2 (G2), group 3 (G3), and group 4 (G4). In G1 (control) the ewes were fed with 1% of concentrate supplementation (CS) based on live weight (LW) and 2% of maize silage (MS) with a daily intake of 3% dry matter (DM) based on LW. In G2 feeding was constituted of 1% of CS based on LW and 2% of forage, including 2% of roughage, 50% was hay of P. pyramidalis and the other 50% of DM. In G3 feed was constituted of 1% of CS based on LW and 2% of roughage. Among these 2% of roughage, 80% was hay of P. pyramidalis and the other 20% of DM. In G4 the sheep were fed with 1% CS based on the LW and the roughage consisting of 100% P. pyramidalis hay.

Poisonous plants for ruminants in the dairy region of Pernambuco, Northeastern Brazil

“…Recent data about raised ruminants in this dairy region pointed to a total of 838.487 bovines, 313.072 sheep and 135.385 goats (IBGE 2017). In this region, poisoning by plants in livestock remains a relevant cause of economic losses and several manuscripts reporting outbreaks of poisonings in ruminants have been published (Guaraná et al 2011, Souza et al 2012, Lima et al 2013, Olinda et al 2015, Andrade Neto et al 2016, Brito et al 2016, Almeida et al 2017, Correia et al 2017, Mendonça et al 2018, Silva Filho et al 2020.…”