Anti-Müllerian hormone and antral follicle count are more effective for selecting ewes with good potential for in vivo embryo production than the presence of FecG mutation or eCG pre-selection tests

Pinto, Pedro Henrique Nicolau; Balaro, M. F. A.; Souza-Fabjan, J. M. G.; Ribeiro, Lilian dos Santos; Bragança, G. M.; Leite, Ceci Ribeiro; Arashiro, E. K. N.; Silva, Kleibe de Moraes; Fonseca, J. F. da; Brandão, Felipe Zandonadi

doi:10.1016/j.theriogenology.2018.02.018

Cited by 23 publications

(9 citation statements)

References 28 publications

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“…It was observed that buffalo with a higher plasma average of AMH concentration present superior IVEP efficiency. These animals presented a greater number of visualized follicles at the time of the OPU, a greater number of oocytes recovered/cultivated and a greater production of embryos, confirm previous studies in cattle (MOSSA et al, 2017) and sheep (LAHOZ et al, 2014;PINTO et al, 2018). These data support the use of AMH like useful tool for improving embryo production in buffalo.…”

Section: Resultssupporting

confidence: 86%

>b<Factors that affect the embryo production and fertility of buffalo donors and recipientes>/b<

Chello¹

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Ringrazio Gianluca per aver sempre creduto in me e per non avermi mai fatto mancare il suo sostegno e supporto. Ringrazio i miei genitori Rosario e Lucia e mio fratello Fabrizio per aver saputo starmi accanto nonostante la distanza. Ringrazio il Professor Pietro per avermi dato quest' occasione unica per poter imparare e crescere, per me è stato come un sogno che si avvera. Grazie! Ringrazio le mie amiche Laisa, Flavia, Lais, Monica e Bruna e i miei colleghi Badà,

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Section: Resultssupporting

confidence: 86%

>b<Factors that affect the embryo production and fertility of buffalo donors and recipientes>/b<

Chello¹

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“…A positive correlation between plasma AMH concentrations during the prepubertal period and occurrence of ovulation in response to eCG was also reported [6]. A higher number of embryos were found in synchronized ewes with higher plasma AMH concentrations [14]. Ewes with a high plasma AMH (>97 pg/ml) had a higher number of lambs born per ewe per year until 3.5 years of age compared with low (<97 pg/ml) plasma AMH concentrations measured at 3.5 months of age [7].…”

Section: Discussionmentioning

confidence: 66%

Relationship of Anti-Mullerian Hormone to Reproductive Traits in Katahdin Ewes Bred in Late Spring or Fall

Acharya¹,

Burke²,

Ashworth³

et al. 2020

ARSci

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Anti-Mullerian hormone (AMH) is an endocrine marker for fertility in many species. This study investigated possible correlations between serum AMH concentrations, mean number of lambs born (out-of-season in spring or fall), and estimated breeding values (EBVs) for number of lambs born (NLB), number of lambs weaned (NLW), maternal weaning weight (MWWT), weaning weight (WWT), and maternal index (determined by Sheep Genetics Australia). Blood was collected at breeding from Katahdin ewes between 0.7 and 7 years of age in 2015 (n = 163) for the analysis of serum concentrations of AMH. Anti-Mullerian hormone concentration was either expressed quantitatively or divided into quartiles (AMH Q1 through Q4, with Q1 the lowest and Q4 the highest, pg/ml). Data were analyzed by PROC CORR, GLM or chi-squared using SAS. Mean serum AMH was 182 ± 11 pg/ml and ranged from 0 to 1112 pg/ml. There was no correlation between serum AMH and EBVs for NLB, NLW, MWWT, WWT and the maternal index. Serum AMH concentration was similar in ewes in different age categories (P = 0.157). There was a correlation between EBV for NLB (0.29; P = 0.0002) and NLW (0.19; P = 0.013) with average number of lambs born. Ewes in the lowest AMH quartile (Q1) had a lower mean number of offspring born from spring breeding compared with ewes in other AMH quartiles (Q2, Q3, and Q4; P < 0.05). Further study is needed to determine the effectiveness of using serum AMH for selecting ewes for out-of-season (spring) breeding.

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“…However, ewes heterozygous for an inactivating mutation in GDF9 did not have increased responsiveness to MOET (Pinto et al, 2018). Furthermore, subgroups of animals homozygous for the Booroola mutation have a suppressed responsiveness to FSH-based superovulation procedures potentially through interactions with other, currently unidentified, genetic mutations (Juengel et al, 2013a).…”

Section: Using Knowledge Of Local Regulation Of Folliculogenesis To Imentioning

confidence: 93%

The local regulation of folliculogenesis by members of the transforming growth factor superfamily and its relevance for advanced breeding programmes

et al. 2018

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Regulation of the growth and maturation of the ovarian follicle is critical for normal reproductive function. Alterations in this growth can lead to pathological conditions, such as cystic follicles, reduced oocyte quality, or an abnormal endocrine environment leading to poor fertility. Alterations in follicular growth also influence the number of follicles ovulating and thus can change litter size. Both endocrine factors, such as follicle stimulating hormone and luteinizing hormone, as well as local factors, are known to regulate follicular growth and development. This review will focus on the role of local factors in regulation of ovarian follicular growth in ruminants, with a focus on members of the transforming growth factor superfamily. The potential role of these factors in regulating proliferation, apoptosis, steroidogenesis and responsiveness to gonadotrophins will be considered.

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Anti-Müllerian hormone and antral follicle count are more effective for selecting ewes with good potential for in vivo embryo production than the presence of FecG mutation or eCG pre-selection tests

Cited by 23 publications

References 28 publications

>b<Factors that affect the embryo production and fertility of buffalo donors and recipientes>/b<

>b<Factors that affect the embryo production and fertility of buffalo donors and recipientes>/b<

Relationship of Anti-Mullerian Hormone to Reproductive Traits in Katahdin Ewes Bred in Late Spring or Fall

The local regulation of folliculogenesis by members of the transforming growth factor superfamily and its relevance for advanced breeding programmes

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