Superovulation traits

Association of a hypoxia-inducible factor-3α gene polymorphism with superovulation traits in Changbaishan black cattle

Q. Deng, Gao, Y., Jiang, H., Chen, C. Z., Li, C. H., Yu, W. L., Chen, X., and Zhang, J. B., Association of a hypoxia-inducible factor-3α gene polymorphism with superovulation traits in Changbaishan black cattle, vol. 14, pp. 14539-14547, 2015.

This study was designed to examine a single nucleotide polymorphism (SNP) in the HIF-3α gene in three hundred Changbaishan black cattle using PCR-restriction fragment length polymorphism to determine whether there is an association between this SNP and superovulation. The cloning and sequencing results indicate that the polymorphism is due to a point mutation at the 278-bp position in the HIF-3α gene, resulting in 3 genotypes (AA, AB, and BB).

Effects of choice of month of treatment and parity order on bovine superovulation traits

Q. Deng, Gao, Y., Li, C. H., Yu, X. F., Ren, J. S., Li, S. J., Chen, C. Z., Yuan, B., Ding, Y., Jiang, H., and Zhang, J. B., Effects of choice of month of treatment and parity order on bovine superovulation traits, vol. 14, pp. 15062-15072, 2015.

In this study, the performance of 300 Changbaishan Black cattle treated for superovulation from June to September was evaluated to determine the optimal conditions and herds for bovine embryo production. Data analysis revealed that cattle treated in July and August had higher numbers of available embryos (NAE), M1 embryos (NM1), and total embryos (NTE), as well as a higher percentage of M1 embryos (PM1).

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