02741naa a2200433 a 450000100080000000500110000800800410001902400520006010000180011224501460013026000090027652014860028565000240177165000200179565000130181565000100182865000190183865000200185765000210187765000120189865000110191065000100192165000240193165000200195565300190197565300220199470000170201670000210203370000260205470000170208070000160209770000180211370000250213170000230215670000220217970000260220170000190222777300610224621463752022-12-12       2022    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.1007/s11250-022-03310-82DOI1 aCHAVES, M. S.  aUse of logistic models to evaluate the response of superovulation treatment and embryo production in Santa Inês ewes.h[electronic resource]  c2022  aThe study aimed to verify the infuence of the FecGE mutation in superovulated ewes and to evaluate the probability of logistic models to determine the response capacity of these ewes to superovulatory treatment. Santa Inês ewes (n =29) were genotyped for the FecGE mutation and separated for their genotype group in carriers of the mutant E allele (FecGE/E, FecG+/E) and non-carrier (FecG+/+) alleles. The ewes underwent hormonal treatment for superovulation. Aside from the genotypes, variables included in the statistical model were reproductive status (empty, early lactation, or late lactation), age (&gtor&lt6 years), and number of births (nulliparous, primiparous, multiparous). The carriers of the mutation could be discriminated from the non-carriers based on the number of corpora lutea, rate of frozen embryos, and fecundity. Recovery rate was signifcantly higher (P&lt0.05) in FecGE/E (94.31%) compared to FecG+/E (63.15%) and FecG+/+ (61.90%) (P&lt0.05), whereas fecundity rate of FecG+/+ ewes (50.76%) was signifcantly higher than FecG+/E (18.96%) and FecGE/E (32.53%) (P&lt0.05). We determined in this study that the response to superovulation and embryo production can be discriminated between FecGE/E and FecG+/E ewes in relation to the FecG+/+ genotype. Logistic models that included reproductive status and mutation, or reproductive status and age, or reproductive status and number of births were efective in predicting the response to superovulatory treatment.  aAnimal reproduction  aEmbryo (animal)  aHormones  aSheep  aSuperovulation  aEmbrião Animal  aHormônio Animal  aOvário  aOvelha  aOvino  aReprodução Animal  aSuperovulação  aFertilização  aModelo logístico1 aRAMOS, A. F.1 aBRASIL, N. H. M.1 aFERREIRA-SILVA, J. C.1 aPAIVA, S. R.1 aMELO, E. O.1 aBARROS, I. de1 aFREITAS, V. J. de F.1 aRIBEIRO JUNIOR, V.1 aBARTOLOMEU, C. C.1 aOLIVEIRA, M. A. L. de1 aAZEVEDO, H. C.  tTropical Animal Health and Productiongv. 54, 276, 2022.