Publications by authors named "Ana Silvia Sardinha Ribeiro"

The aim of the present study was to evaluate the correlation of age and heat cycle to determine reproductive efficiency in young and aged Thoroughbred mares bred on foal heat (FH) or on second heat (SH) after foaling. Embryo mortality (EmbM) was determined every time a mare was found open after a positive pregnancy diagnosis. Parturition to breeding interval, pregnancy rate (PregR) and EmbM rate were the dependent variables and the treatments were breeding on the FH or on SH.

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Article Synopsis
  • Buteogallus schistaceus, a bird of prey native to the Amazon, is experiencing a decline in its population, raising concerns among conservationists.
  • This study focuses on a specific case where an individual bird was treated for parasitic nematodes at the Universidade Federal Rural da Amazônia in Belém after being captured on campus.
  • The bird underwent treatment and was found to have ten nematodes identified as Procyrnea, marking the first documented instance of nematodes in this species.
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This study aimed to identify and characterize genetically species of the genus Hepatozoon detected in Hydrochoerus hydrochaeris (capybaras) and Pecari tajacu (collared peccaries) from two localities from the Eastern Amazon. Blood samples from 196 free-living H. hydrochaeris from Marajó Island and 109 P.

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