The Level of Prolactin, Serum Amyloid A, and Selected Biochemical Markers in Mares Before and After Parturition and Foal Heat

Follicular Dynamics and Pregnancy Rates during Foal Heat in Colombian Paso Fino Mares Bred under Permanent Grazing

“…Thoroughbred mares in which the embryo was implanted in the non-pregnant or pregnant horn of the previous gestation showed gestation rates of 79.2% and 20.8%, respectively, suggesting that uterine involution plays a critical role in early embryo implantation and development, as reported by Davies et al [ 17 ]. The pregnancy rate in our study is similar to the report of a 66.7% gestation rate in Arabian mares in Algeria [ 44 ]. In a study conducted in Japan through a survey of 292 producers, the authors evaluated the foal heat performance of 1432 mares.…”

“…Our study showed no evidence of postpartum alterations, so it is assumed that the mares could have had normal uterine involution. In a study conducted in Cold-Blood Polish Mares, in which prolactin, serum amyloid A, and biochemical analytes –(A.S.T., Ca 2+ , Mg 2+ , P+, T-Chol, and TP)- were measured during the peripartum, the authors found no significant statistical differences in the analytes evaluated between foaling and the foal heat [ 44 ].…”

Assessment of serum amyloid A concentrations and biochemical profiles in lactating jennies and newborn Ragusano donkey foals around parturition and one month after foaling in Sicily

“…Recently, a certain interest has been directed at SAA modifications in mares affected by reproductive diseases (Coutinho da Silva et al., 2013 ). Studies have also been performed in healthy horses during different type of exercise (Piccione et al., 2016 ; Witkowska‐Piłaszewicz, Bąska, et al., 2019 ) or specific physiological state like peripartum in broodmares and neonatal foals (Chavatte et al., 1992 ; Krakowski et al., 2020 ; Stoneham et al., 2001 ). On the contrary, SAA concentrations have been scarcely investigated in domestic donkeys (Kay et al., 2019 ; McLean et al., 2016 ) and only one report exists on feral donkeys (Jerele et al., 2020 ).…”

Interrelationship between reproductive hormones and acute phase proteins during estrous cycle and pregnancy in Spanish purebred broodmares

“…In mares, the profile of APPs has been analyzed in various pathological conditions such as endometritis ( Canisso et al., 2014 ; Christoffersen et al., 2012 ; Coutinho da Silva et al., 2013 ; Sikora et al., 2015 ; Wolf, Maslchitzky, Gregory, Jobim & Mattos, 2012 ), placentitis ( Coutinho da Silva et al., 2013 ), early embryonic mortality ( Krakowski et al., 2011 ) and foal heat ( Krakowski et al., 2017 , 2020 ). Therefore, the assessment of APP levels is useful as an additional tool for clinical reproductive performance.…”