Genomic and phenotypic analyses of antral follicle count in Aberdeen Angus cows

Júnior, Gerson A. Oliveira; Pinheiro, V. G.; Fonseca, Pablo Augusto de Souza; Costa, Ciniro; Pioltine, Elisa Mariano; Botigelli, Ramon César; Razza, E. M.; Ereno, R. L.; Ferraz, José Bento Sterman; Seneda, Marcelo Marcondes; Nogueira, Marcelo Fábio Gouveia

doi:10.1016/j.livsci.2021.104534

Cited by 2 publications

(2 citation statements)

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“…SNPs identified in this region include FAM110B, UBXN2B, LOC101116841, SDCBP, and NSMAF. It has been reported that these SNPs are associated with meat and carcass traits such as adiposity, sensory and anatomical characteristics (Lee et al 2013;Li & Kim 2015;Li et al 2017;Hay & Roberts 2018;de las Heras-Saldana et al 2020;Naserkheil et al 2020;Srikanth et al 2020;Srivastava et al 2020;Takeda et al 2020;Naserkheil et al 2021;Xu et al 2021;Fonseca et al 2022); health traits such as resistance to temperature stress, mastitis, and diseases (Kommadath et al 2014;Chen et al 2015;Minuti et al 2015;Smith et al 2019;Deng et al 2020;Li et al 2020;Naserkheil et al 2020;Brunes et al 2021;Londoño-Gil et al 2021;Ruan et al 2021;Haire et al 2022); production traits such as growth, feed intake, and feed conversion (Weng et al 2016;Seabury et al 2017); reproductive traits such as female fertility and age at calving (Fortes et al 2012;Gaddis et al 2017;Mota et al 2017;Silva et al 2020;Oliveira et al 2021;Fonseca et al 2022) and appearance traits such as coat color (Senczuk et al 2020;Chhotaray et al 2021). Genomic regions and genes identified as under selection using iHS and ROH approaches have been associated with various ecological and economic traits in studies conducted on livestock.…”

Section: Discussionmentioning

confidence: 99%

Identification of Selection Signatures and Genetic Diversity in the Sheep

KARABAŞ,

YILMAZ

2024

Preprint

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The study utilized genome-wide data from the Illumina OvineSNP50K platform and specifically targeted the Eşme sheep population. The integrated haplotype score (iHS) and runs of homozygosity (ROH) statistical approaches were used to identify selection signatures. Using the iHS analysis, it was discovered that there are 10 genomic regions and 51 genes on chromosomes 1, 9, 11, and 12 that are under selection. Three genomic regions and 97 genes on chromosomes 6 and 11 were found to be under selection using the ROH analysis. Candidate genes associated with economic and ecological traits were detected using both approaches. Among the genetic diversity parameters considered in the study, the minor allele frequency (MAF), genetic distance between individuals (D), observed heterozygosity (Ho), and expected heterozygosity (He) values were found to be 0.300, 0.309, 0.388, and 0.390, respectively. The ratio of polymorphic SNPs (PN) was 0.947, and the average values of FROH and FHOM were 0.030 and 0.029, respectively. The study demonstrates that selection signature approaches can define the economic and ecological characteristics of farm animals using phenotypic information. The information obtained through these approaches can be utilized in breeding and conservation programs for the genetic resources of farm animals.

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Section: Discussionmentioning

confidence: 99%

Identification of Selection Signatures and Genetic Diversity in the Sheep

KARABAŞ,

YILMAZ

2024

Preprint

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“…At least 5 additional genes linked to expression of reproductive traits were also found to be related to AFC. A second study on 257 Angus cows evaluated AFC and associated SNPs and identified genes involved with protein encoding, regulation of primordial germ cells, and cellular maintenance, as well as those linked with body weight and height in cattle as different by AFC group ( Oliveira Júnior et al, 2021 ). These studies indicate that several downstream genes and processes are linked with a cow's AFC.…”

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Associations of antral follicle count with fertility in cattle: A review

2023

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Graphical Abstract Summary: Ultrasonic determination of antral follicle count (AFC) is used to classify animals into high or low AFC categories. These categories have a wide range and animals classified as low on one study may be considered high by another study based on the population. Associations with high AFC cows include greater follicular vasculature, blastocyst rates, hatched blastocyst rates, 12-d embryonic cell growth and cleavage rates, along with a lower number of embryonic apoptotic cells. More high AFC cows cycled as heifers at 15 months, had a greater pregnancy rate and conception rate and progesterone concentration after breeding, and fewer days to conception. However, other studies have found that low AFC animals had greater pregnancy and conception rates and progesterone concentration after breeding compared with high AFC cows. Low AFC cows also showed greater preovulatory follicle blood flow, greater blastocyst cell number, and greater area of the corpus luteum.

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Genomic and phenotypic analyses of antral follicle count in Aberdeen Angus cows

Cited by 2 publications

References 58 publications

Identification of Selection Signatures and Genetic Diversity in the Sheep

Identification of Selection Signatures and Genetic Diversity in the Sheep

Associations of antral follicle count with fertility in cattle: A review

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