Publications by authors named "Camila De Miranda E Silva-Chaves"

"Exploring AMH Levels, Homeostasis and Primordial Follicle Activation in Pubertal Infected Sheep on a High Protein Diet ". The first activation wave of ovarian primordial follicles is part of the onset of puberty and fertility. Abomasal helminth infection may cause an undesirable delay in puberty manifestation.

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Article Synopsis
  • The nutritional and physiological state of ewe lambs can affect ovarian health and fertility, particularly during the critical peripubertal growth phase.
  • A study fed ewe lambs different protein levels, then infected them with a specific parasite, to see if higher protein would improve ovarian function.
  • Results showed that protein supplementation in infected lambs enhanced genetic activation related to follicle development, while non-supplemented lambs had negative effects on reproductive processes, instead showing elevated inflammation and immune responses.
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The early pregnancy diagnosis allows optimizing production and timely management correction, with a greater reproductive output of livestock. The Idexx Rapid Visual Pregnancy Test® consists of an ELISA for visual reading which does not require the use of readers in the laboratory, with satisfactory pregnancy diagnoses at 28 days of pregnancy in cattle. Therefore, the aim of this study was to evaluate this rapid test and to verify the most appropriate day for the diagnosis of pregnancy in the ovine species.

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The aim of the present study was to evaluate the efficiency of visual ELISA-PAG for early pregnancy diagnosis based on the presence of PAG (pregnancy-associated glycoprotein) using sheep blood serum. Experiment 1: 140 ewes were divided into three groups with different stages of pregnancy. In the first group, 41 pregnant ewes were sampled at 26, 28, 30, and 32 days of pregnancy; in the second group, 65 ewes (49 pregnant with 30 days and 16 non-pregnant) were sampled; in the third group, 34 non-pregnant ewes were sampled.

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