Effect of Monthly Variations on the Plasma Membrane, Acrosome and DNA Integrities of Spermatozoa in Friesian Holstein Bulls Born in Iraq

Q. Aboud, S. Hatif
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Abstract

This study was aimed to evaluate the influence of months of the year on the quality of semen in Holstein bulls. A study carried out at artificial insemination centre/ Abou-Ghareeb/ western of Baghdad. A total of 160 ejaculates were collected from 15 bulls born in Iraq via the artificial vagina. The age of the bulls ranged between 4 to 5 years and the study period were December to March and September. The semen samples were diluted with Tris base extender. The semen was packed in a straw according to the program of artificial insemination centre. Semen characteristics (plasma membrane, acrosome, and DNA integrities) were evaluated. The results revealed a significant decrease (P≤0.01) in the plasma membrane and acrosome integrity in September as compared with December, January, February, and March. There was a significant decline (P≤0.05) in DNA integrity in September as compared with December, January, February, and March in fresh and frozen semen. In conclusion, the September month had a negative effect on the plasma membrane, acrosome, and DNA percentage in all bulls.
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伊拉克出生的弗里斯-荷斯坦公牛精子膜、顶体和DNA完整性的月变化影响
本研究旨在评估一年中几个月对荷斯坦公牛精液质量的影响。在巴格达西部阿布·加雷布人工授精中心进行的一项研究。通过人工阴道从伊拉克出生的15头公牛身上总共采集了160个精液。公牛的年龄在4至5岁之间,研究期为12月至3月和9月。精液样品用Tris碱增量剂稀释。精液按照人工授精中心的程序装在吸管里。评估精液特征(质膜、顶体和DNA完整性)。结果显示,与12月、1月、2月和3月相比,9月的质膜和顶体完整性显著降低(P≤0.01)。与12月、1月、2月和3月相比,9月新鲜精液和冷冻精液的DNA完整性显著下降(P≤0.05)。总之,九月对所有公牛的质膜、顶体和DNA百分比都有负面影响。
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发文量
11
审稿时长
18 weeks
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