Article (Scientific journals)
Diagnosing american bison pregnancy during its two last trimesters: Comparison between rectal palpation associated with ultrasonography and hormonal assays in serum or in feces.
Frisee, Vincent; Rigaux, Goulven; Dufour, Patrice et al.
2025In Animal Reproduction Science, 272, p. 107660
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Keywords :
Bison bison; Estrogens; Feces; Liquid-chromatography and mass spectrometry; Placenta; Pregnancy associated glycoproteins; Pregnancy diagnosis; Progesterone; Estrone; Animals; Female; Pregnancy; Pregnancy Tests/veterinary; Pregnancy Tests/methods; Ultrasonography, Prenatal/veterinary; Palpation/veterinary; Estrone/analogs & derivatives; Ultrasonography/veterinary; Ultrasonography/methods; Feces/chemistry; Bison/blood; Pregnancy, Animal/blood; Bison; Palpation; Pregnancy Tests; Pregnancy, Animal; Ultrasonography; Ultrasonography, Prenatal; Food Animals; Animal Science and Zoology; Endocrinology
Abstract :
[en] The study aimed to propose sensitive, specific and easy pregnancy diagnosis for American Bison. Trans-rectal Palpation and Ultrasonography (TRPUS), concentration of Pregnancy Associated Glycoproteins (PAG), Progesterone (P4), Estrone (E1), Estrone-Sulfate (E1S) in serum and P4 and E1S in feces were compared. Immunoassay was used for PAG, whereas steroids were assayed using Liquid Chromatography coupled to Mass Spectrometry. Pregnancy and its period were retrospectively assessed after calving. Animals included were distributed as follows: 40 were non-pregnant, 27 were in their second and 15 in their third trimester of gestation. Fisher's test was used to determine sensitivity and specificity of TRPUS. Thresholds leading to best sensitivities and specificities for hormonal assays were determined using Receiver Operating Characteristic Curves. Although TRPUS requires contention, palpation skills, it was conclusive in 70.63 % of cases and good sensitivity (97.50 %) and decent specificity (83.33 %) were observed. Concentrations of PAG, P4, E1S and E1 in serum were higher in Pregnant animals (P), with thresholds giving decent specificity and sensitivity (lower sensitivity for E1 and E1S: 92.11 %; lower specificity for P4: 93.48 %). In feces, P4 and E1S were higher in P: pregnancy diagnosis using E1S assay in feces showed 100 % of sensitivity and specificity. In conclusion, assaying E1S in feces during the two last trimesters of American Bisons pregnancy is a sensitive and specific gestation diagnosis. Pregnancy diagnosis using TRPUS can be useful in ranches but requires contention and skill adaptation. Serum hormonal assays can help evaluating the pregnancy period but also require contention.
Disciplines :
Veterinary medicine & animal health
Animal production & animal husbandry
Zoology
Author, co-author :
Frisee, Vincent  ;  Université de Liège - ULiège > Département d'Enseignement et de Clinique des animaux de Production (DCP) ; Production Animals Department, FARAH Sustainable Livestock Production, Liège University, Belgium
Rigaux, Goulven;  Pan Anima, Tournai, Belgium
Dufour, Patrice  ;  Centre Hospitalier Universitaire de Liège - CHU > > Service de toxicologie clinique, médicolégale, environnementale et en entreprise
Brutinel, Flore ;  Université de Liège - ULiège > Fundamental and Applied Research for Animals and Health (FARAH) > FARAH: Médecine vétérinaire comparée ; Theriogenology unit, FARAH Comparative Veterinary Medicine, Liège University, Belgium
Bossaert, Philippe ;  Université de Liège - ULiège > Fundamental and Applied Research for Animals and Health (FARAH) > FARAH: Productions animales durables ; Production Animals Department, FARAH Sustainable Livestock Production, Liège University, Belgium
Egyptien, Sophie  ;  Université de Liège - ULiège > Fundamental and Applied Research for Animals and Health (FARAH) ; Theriogenology unit, FARAH Comparative Veterinary Medicine, Liège University, Belgium
Barbato, Olimpia;  Veterinary Medicine Department, Perugia University, Perugia, Italy
Farnir, Frédéric  ;  Université de Liège - ULiège > Département de gestion vétérinaire des Ressources Animales (DRA) ; Biostatistics and bioinformatics applied to Veterinary Sciences, FARAH Sustainable Livestock Production, Liège University, Belgium
Le Goff, Caroline  ;  Université de Liège - ULiège > Département de pharmacie > Chimie médicale
Deleuze, Stefan  ;  Université de Liège - ULiège > Fundamental and Applied Research for Animals and Health (FARAH) > FARAH: Médecine vétérinaire comparée ; Theriogenology unit, FARAH Comparative Veterinary Medicine, Liège University, Belgium
Cavalier, Etienne  ;  Université de Liège - ULiège > Département de pharmacie > Chimie médicale
Ponthier, Jérôme  ;  Université de Liège - ULiège > Fundamental and Applied Research for Animals and Health (FARAH) > FARAH: Médecine vétérinaire comparée
Language :
English
Title :
Diagnosing american bison pregnancy during its two last trimesters: Comparison between rectal palpation associated with ultrasonography and hormonal assays in serum or in feces.
Publication date :
January 2025
Journal title :
Animal Reproduction Science
ISSN :
0378-4320
eISSN :
1873-2232
Publisher :
Elsevier, Netherlands
Volume :
272
Pages :
107660
Peer reviewed :
Peer Reviewed verified by ORBi
Funding text :
Clinical incomes of the Theriogenology unit of the Veterinary Medicine Faculty of Li\u00E8ge University financed this research.
Available on ORBi :
since 27 February 2025

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