Investigating genetic gain resulted from using sexed sorted semen in embryo transfer program using simulation in dairy cattle

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SATTARVAND J.; SEYED SHARIFI R.; BOUSTAN A.; HEDAYAT EVRIGH N.; SEIFDAVATI J.

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Journal: JOURNAL OF RUMINANT RESEARCH Year:2018 | Volume:6 | Issue:3 Page(s): 1-11

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Title

Investigating genetic gain resulted from using sexed sorted semen in embryo transfer program using simulation in dairy cattle

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Keywords

Dairy cattleQ2

sexed semenQ2

Embryo transferQ1

Genetic gainQ1

Abstract

Background and objectives: In Dairy cattle industry, there is a great interest in pre-selecting sex of offspring. Use of sex-sorted sperm is instrumental method for production of female offspring. This reproductive technique could result in more genetic progress and more economic profitability. On the other hand, the use of sex-sorted sperm in multiple ovulation and Embryo transfer (MOET) programs is considered because of its potential for producing more female progeny from superior dams. The aim of this study was to investigate the effect of using sexed semen in MOET program on the Genetic gain in Holstein Dairy cattle. Materials and methods: True breeding values and estimated breeding values of a herd with 30, 000 heifers, 24, 900 cows in parity 1 and 19, 671 cows in parity 2 were simulated in Visual Basic 6. The traditional evaluation and genomic evaluation methods were considered for genetic evaluation. Four strategies were assumed. In the first strategy, 750 heifers were considered as donors and sexed semen was used to inseminate these donors. In the second strategy, 750 superior heifers, 622 superior cows in parity 1 and 492 superior cows in parity 2 were donors and conventional semen was used to inseminate these donors. In the third strategy, number of donors was the same as those described for strategy 2 but in this strategy, conventional semen was used to inseminate all donors. In strategy 4, sexed semen was considered for insemination of heifer donors and conventional semen was used for other donors. Results: The Genetic gain of strategy 4 was more than other strategies. For example, using traditional evaluation, Genetic gain of strategies 1 to 4 in new-born calves were 51. 7, 75. 6, 102. 4 and 110. 5 Kg per year, respectively. Using sexed semen for insemination of heifer donors had positive effect on Genetic gain, but when cows in parity 1 and 2 were donors, using conventional semen had more potential to increase the Genetic gain. Results also showed that the improved Genetic gain obtained from reproductive techniques was lower than the Genetic gain of sire selection in dairy herds. Conclusion: In conclusion, use of sexed sorted semen in combination with MOET for donor heifers improved the Genetic gain of the herd but for donor cows in the first and second parities using sexed semen was not profitable.

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APA: Copy

SATTARVAND, J., SEYED SHARIFI, R., BOUSTAN, A., HEDAYAT EVRIGH, N., & SEIFDAVATI, J.. (2018). Investigating genetic gain resulted from using sexed sorted semen in embryo transfer program using simulation in dairy cattle. JOURNAL OF RUMINANT RESEARCH, 6(3 ), 1-11. SID. https://sid.ir/paper/244022/en

Vancouver: Copy

SATTARVAND J., SEYED SHARIFI R., BOUSTAN A., HEDAYAT EVRIGH N., SEIFDAVATI J.. Investigating genetic gain resulted from using sexed sorted semen in embryo transfer program using simulation in dairy cattle. JOURNAL OF RUMINANT RESEARCH[Internet]. 2018;6(3 ):1-11. Available from: https://sid.ir/paper/244022/en

IEEE: Copy

J. SATTARVAND, R. SEYED SHARIFI, A. BOUSTAN, N. HEDAYAT EVRIGH, and J. SEIFDAVATI, “Investigating genetic gain resulted from using sexed sorted semen in embryo transfer program using simulation in dairy cattle,” JOURNAL OF RUMINANT RESEARCH, vol. 6, no. 3 , pp. 1–11, 2018, [Online]. Available: https://sid.ir/paper/244022/en

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