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首页> 外文期刊>Tropical Animal Health and Production >Sperm Motion Characteristics of Garole Rams Raised for a Prolonged Period in a Semi-arid Tropical Environment
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Sperm Motion Characteristics of Garole Rams Raised for a Prolonged Period in a Semi-arid Tropical Environment

机译:半干旱热带环境中长期饲养的Garole公羊的精子运动特征

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摘要

The Garole is a prolific but less well known and rare breed of small sheep found in the hot and humid Sunderban region of West Bengal. An ability to breed throughout the year and to graze in knee-deep water, resistance to foot rot and a strong mothering instinct are some of the special features of this breed. Garole rams could provide germplasm to incorporate prolificacy traits by artificial insemination of the nonprolific sheep breeds found in abundance in the semi-arid and arid tropical climates of India. The aim of the present study was to evaluate the semen production by Garole rams maintained in a semi-arid climate for three years and to objectively assess their semen quality by a computer-assisted sperm analysis technique. The donor rams were randomly selected each year from the original flock procured from their natural habitat or from the offspring born at the Institute farm. Semen was collected weekly for three weeks each autumn for three consecutive years from 8 rams each year. The overall means (SD) of the traits that did not differ significantly with age or year were volume, concentration, curvilinear velocity, average path velocity, amplitude of lateral head displacement, beat frequency, motility and the percentages of rapid motile sperms and of slow motile sperms. The age of the rams had a significant effect (p<0.05) on the straight-line velocity but this was not significantly affected by the length of exposure to the semi-arid climate. However, the age and year had significant effects (p<0.05) on linearity, straightness and the percentage of medium motile sperms. It was concluded that Garole rams are capable of producing good-quality semen even after a prolonged period of exposure to a semi-arid tropical climate.
机译:Garole是在西孟加拉邦湿热的桑德班地区发现的多产但鲜为人知的稀有小绵羊品种。该品种全年都有繁殖能力,可以在膝盖深的水中放牧,抵抗脚腐病和强大的母性,这是该品种的一些特殊特征。 garole公羊可以通过人工授精印度半干旱和干旱热带气候中大量发现的非多产绵羊品种来提供种质,从而融合多产性状。本研究的目的是评估在半干旱气候下维持了三年的Garole公羊的精液产量,并通过计算机辅助的精子分析技术客观地评估其精液质量。每年从其自然栖息地或研究所农场的后代采购的原始羊群中随机选择供体公羊。每年秋天从三个公羊每年连续三个星期每周三次收集精液。与年龄或年份无显着差异的特征的总体平均值(SD)为体积,浓度,曲线速度,平均路径速度,侧向头部移位幅度,搏动频率,运动性以及快速运动精子和慢速精子的百分比运动精子。公羊的年龄对直线速度有显着影响(p <0.05),但是受半干旱气候的暴露时间没有明显影响。但是,年龄和年份对线性,笔直度和中游动精子的百分比有显着影响(p <0.05)。结论是,即使长时间暴露于半干旱的热带气候下,加洛尔公羊也能够生产出高质量的精液。

著录项

  • 来源
    《Tropical Animal Health and Production》 |2003年第3期|249-257|共9页
  • 作者单位

    Semenology Laboratory Division of Physiology Central Sheep and Wool Research Institute;

    Semenology Laboratory Division of Physiology Central Sheep and Wool Research Institute;

    Semenology Laboratory Division of Physiology Central Sheep and Wool Research Institute;

    Semenology Laboratory Division of Physiology Central Sheep and Wool Research Institute;

    Semenology Laboratory Division of Physiology Central Sheep and Wool Research Institute;

    Semenology Laboratory Division of Physiology Central Sheep and Wool Research Institute;

    Semenology Laboratory Division of Physiology Central Sheep and Wool Research Institute;

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

    age; climate; computer-assisted sperm analysis; prolificacy; semen; sheep; spermatozoa;

    机译:年龄;气候;计算机辅助精子分析;高产;精液;绵羊;精子;

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