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Effect of age and season on semen quality parameters in Sahiwal bulls

机译：年龄和季节对Sahiwal公牛精液质量参数的影响

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摘要

The objective of the study was to determine the effect of season, period, age, bull, and ejaculate on semen quality in Sahiwal bulls. Semen production records from 1996 to 2006 of 5,483 ejaculates from 46 Sahiwal bulls maintained at Artificial Breeding Complex, NDRI, Karnal, India were analyzed using least square analysis of variance by LSML software package. The overall least squares means of ejaculate volume (VOL), total volume per day (VOLD), mass activity (MA), initial motility (IM), sperm concentration per ml (SPC), and sperm concentration per ejaculate (SPCE) were 3.79 ± 0.02 ml, 5.81 ± 0.06 ml, 2.32 ± 0.01, 55.47 ± 0.001%, 766.69 ± 5.50 × 106/ml and 3023.25 ± 30.15 × 106, respectively. All semen traits (VOL, VOLD, MA, IM and SPCE) were significantly (P < 0.01) affected by age groups, season and period, whereas season had significant effect on VOL at 5% level. During hot-humid season, highest value of VOL, VOLD, MA, IM, SPC, and SPCE were observed followed by summer and cold season. Highest value of VOL, VOLD, IM, and SPCE were observed during period-3 (2004–2006), whereas highest value of MA and SPC were observed during period-1 (1996–1999). However, lowest magnitude of MA, IM, SPC, and SPCE during period-2 (2000–2003) was observed. Ejaculate characteristics like VOL, VOLD, and SPCE increased with the increasing age of bull up to 5 years and then decreased. Significant (P < 0.01) bull to bull variation was found in VOL, VOLD, MA, IM, SPC, and SPCE traits. First ejaculate had significantly (P < 0.01) higher MA, IM, SPC, and SPCE. Hence, it could be concluded that during rainy season and period-1 and period-3 the quality of semen is quantitatively and qualitatively good. Better quality semen was obtained up to 5 years of age in Sahiwal bulls.
机译：该研究的目的是确定季节，时期，年龄，公牛和射精对萨希瓦尔公牛精液质量的影响。通过最小二乘方差分析，通过LSML软件包分析了1996年至2006年来自印度NDRI人工繁育中心维护的46头Sahiwal公牛的5,483头精液的精液生产记录。射精量（VOL），每日总体积（VOLD），质量活动（MA），初始运动力（IM），每毫升精子浓度（SPC）和每个射精的精子浓度（SPCE）的总体最小二乘均值为3.79分别为±0.02 ml，5.81±0.06 ml，2.32±0.01、55.47±0.001％，766.69±5.50×106 / ml和3023.25±30.15×106 。所有精液特征（VOL，VOLD，MA，IM和SPCE）均受年龄，季节和时期的影响显着（P <0.01），而季节对VOL的影响显着（5％）。在湿热季节，观察到最高的VOL，VOLD，MA，IM，SPC和SPCE值，其次是夏季和寒冷的季节。在第三阶段（2004-2006年）观察到最高的VOL，VOLD，IM和SPCE值，而在第一阶段（1996-1999年）观察到MA和SPC的最高值。但是，在第二阶段（2000-2003年）观察到MA，IM，SPC和SPCE的最低值。 VOL，VOLD和SPCE等射精特征随公牛年龄的增加而增加，直至5岁，然后下降。在VOL，VOLD，MA，IM，SPC和SPCE性状中发现了显着（P <0.01）的牛到牛变异。第一次射精的MA，IM，SPC和SPCE显着（P <0.01）。因此，可以得出结论，在雨季以及第一期和第三期期间，精液的质量在数量和质量上都很好。在萨希瓦尔（Sahiwal）公牛中，直到5岁时才能获得质量更高的精液。

著录项

  • 来源
    《Tropical Animal Health and Production》 |2011年第6期|1161-1168|共8页
  • 作者

    Mukesh Bhakat; T. K. Mohanty; V. S. Raina; A. K. Gupta; H. M. Khan; R. K. Mahapatra; M. Sarkar;

  • 作者单位

    Department of Livestock Production and Management College of Veterinary Science and Animal Husbandry Uttar Pradesh Pandit Deen Dayal Upadhyaya Pashu Chikitsa Vigyan Vishwavidyalya Evam Go-Anusandhan Sansthan Mathura 281 001 Uttar Pradesh India;

    Artificial Breeding Complex Dairy Cattle Breeding Division National Dairy Research Institute Karnal 132001 Haryana India;

    Artificial Breeding Complex Dairy Cattle Breeding Division National Dairy Research Institute Karnal 132001 Haryana India;

    Artificial Breeding Complex Dairy Cattle Breeding Division National Dairy Research Institute Karnal 132001 Haryana India;

    Division of Livestock Production and Management Faculty of Veterinary Science and Animal Husbandry Sher-e-Kashmir University of Agricultural Sciences and Technology—Kashmir Shuhama Alusteng Srinagar 190006 Kashmir (JampampK) India;

    Physiology and Climatology Division Indian Veterinary Research Institute Izatnagar Bareilly 243 122 U.P. India;

    Physiology and Climatology Division Indian Veterinary Research Institute Izatnagar Bareilly 243 122 U.P. India;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Semen quality; Season; Period; Age; Sahiwal;

    机译：精液质量;季节;时期;年龄;Sahiwal;

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