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为了提高种公羊的精液品质和繁殖性能,给养羊业的健康、稳产、高产、持续发展奠定坚实基础,本文从种公羊的选育原则、种公羊的日粮特点、种公羊的饲养管理、种公羊疫病防控等方面,介绍了种公羊饲养管理要点,以期对种公羊的饲养管理有所帮助。 相似文献
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1种公羊
种公羊体型外貌符合种用要求,体质强壮,睾丸发育良好,雄性特征明显。尤其要优先利用体型高大、睾丸大的种公羊。经常检查种公羊的精液品质,及时发现和剔除不符合要求的公羊。注重从繁殖力高的母羊后代中选择、培育公羊。 相似文献
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正"公羊好、好一坡,母羊好、好一窝",这句谚语告诉我们:"种公羊是培育优质羊群的关键,是羊群发展的基础"。所以,养殖场必须掌握如何选择种公羊,如何养好种公羊,才能充分发挥种公羊优势,提升种公羊配种效率,提高养殖经济效益。1种公羊的选择选择种公羊要做到"三看",即一看系谱,二看本身、三看后代。一是系谱详细记录了祖代的体貌特征和生产性能,种公羊可能遗传了祖先的优秀基因,代表其也将具有较高的生产性能。 相似文献
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试验选取饲养管理水平、年龄、采精频率、季节等条件一致的无角道塞特、萨福克、夏洛莱、特克塞尔四个品种种公羊,采集相应精液进行品质比较。试验结果表明,。四个品种中萨福克种公羊的精子密度最高,其次为特克塞尔和夏洛莱种公羊,最低的为无角道塞特种公羊,其中萨福克种公羊的精子密度显著高于特克塞尔、夏洛莱和无角道塞特种公羊（P〈0.05）。四个品种中无角道塞特种公羊的精子顶体完整率最高,其次为特克塞尔和萨福克种公羊,最低的为夏洛莱种公羊,其中无角道塞特种公羊的精子顶体完整率显著高于夏洛莱种公羊（P〈0.05）。试验结果的差异性可能是由于品种间本身的差异性,至于其它的原因,尚待进一步研究。 相似文献
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1 做好种公羊培育工作
种公羊质量高低直接决定着种羊繁殖能力,在种公羊培育过程中,首先需要加强对种公羊的管理,公羊配种工作实施之前,要仔细检查公羊的生殖器官是否发育健全,配种期间还需要给其提供营养均衡的全价饲料,注意控制好种公羊的体重,如果种公羊过于肥胖,可能会降低繁殖效果.同时据相关研究表明,公羊在经过运输之后,生活环境发生变化,其容易出现应激反应,发生短暂不育的现象,因此,如果准备进行配置,在配种之前就不要对公羊进行运输. 相似文献
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哈萨克羊种公羊和特克塞尔羊种公羊精液品质差异研究 总被引：1，自引：0，他引：1
为探讨哈萨克羊种公羊和特克塞尔羊种公羊精液品质的差异,试验选用两品种种公羊各4只,对两个品种种公羊的精液量、精液活力、畸形率等进行了测定,并对其之间的差异进行了分析。结果表明:哈萨克羊种公羊的精液量极显著高于特克塞尔羊种公羊(P0.01),射精精液活率显著高于特克塞尔羊种公羊(P0.05),畸形率极显著低于特克塞尔羊种公羊(P0.01);稀释后两品种羊精液活率之间差异不显著(P0.05)。由此可知,哈萨克羊种公羊的精液品质优于特克塞尔羊种公羊。 相似文献
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1 种公羊的饲养管理技术 小尾寒羊种公羊在整个羊群中具有重要的地位,种公羊的饲养管理是否正确,对整个羊群的繁殖发展和生产的提高有直接影响.因此,必须将种公羊单独喂养,适当调剂,以保证其发挥良好的种用性能.种公羊应全年保持均衡的营养状况,不肥不瘦,精力充沛,即所谓种用体况.养种公羊的根本目的就是要得到它优质的精液,用于配种,因此,种公羊配种能力的大小、好坏是检查种用公羊饲养管理水平的标准. 相似文献
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<正>羊的人工授精技术是利用工具采集种公羊的精液,经过质量检查、稀释、冷藏、运输等处理后,再通过输精设备将精液输入发情母羊的子宫内,以达到配种的目的。和传统的自然交配相比,羊人工授精技术的优势更明显,该技术可以大大减少公羊使用数量,实现异地配种,还具有显著提高母羊受胎率等优点。本文重点从种公羊的选育和调教、母羊的准备和发情鉴定、人工采精和输精等关键要点来深入地理解羊人工授精技术。1种公羊的选育和调教1.1种公羊的选择种公羊引进要优先选择具有资质的种公羊繁殖场,选择种公羊时,首先要认真核对种公羊的系谱,对种公羊前几代的生产性能,比如繁殖数量、产肉量、泌乳量、日增重和料肉比等进行系统综合的考察。其次,选育种公羊时,要根据不同品种的特点和育种要求来选留,选择身体健壮、适应性强、发育良好、年龄在2～6岁的公羊作为种公羊。1.2种公羊的饲养管理种公羊的饲养管理主要体现在两个方面,一是为种公羊提供一个舒适的生活环境,二是为种公羊提供充足的营养。只有提高了饲养管理水平,种公羊才能生产出合格的、高品质的精液。 相似文献
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通过对引入青海的萨福克羊在不同的地域与青海半细毛羊、青海藏羊杂交试验效果的测定与调研,总结性地对萨福克羊适应性作以评价,给青海省种畜管理部门、养殖企业(场)和利用单位(户)提供一些参考性资料,为肉羊业发展打下理论基础。 相似文献
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针对我国缺乏自主高产品种、品种资源利用缺乏有效指导导致肉羊单产能力低、羊肉品质差的肉羊种业现状,本文从地方品种保护和利用并重、本品种选育和引入品种相结合、坚持和完善品种登记制度等方面提出加强品种资源利用和管理对策,结合育种投入、育种规划、育种管理、育种技术4方面提出我国新品种培育工作建议,目的是加快推进我国肉羊种业科技创新,构建我国肉羊种业体系。 相似文献
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Sheep farming intensification and utilization of natural resources in a Mediterranean pastoral agro-ecosystem 总被引：1，自引：0，他引：1
The research was carried out in the “Sierra y Cañones de Guara” Natural Park, a protected mountain area located in the Central Pyrenees (Huesca, Spain). In this territory, a notorious recession of agricultural activities has been observed in recent decades, which has originated changes in the type and intensity of land utilization and, simultaneously, led to environmental and landscape degradation.The main goal of this research was to analyse what characteristics of the current sheep farming systems could explain different patterns of utilization of the grazing resources. Information was obtained through direct interviews with all sheep farmers that used the grazing resources of the Park in 2000 (n = 53). Specific information on grazing management (grazing areas, grazing periods, number and type of grazing animals) was collected together with data on family characteristics, labour, flock management, land use, continuity, recent changes in farming and farmers opinions. Principal Components Analysis was used to examine relationships among original variables. Farming systems were then characterized in four homogeneous groups using Cluster Analysis. Finally, a Logistic Regression allowed determining relationships between the level of intensification of management and several social and technical features.Intensification of farm management was linked to the type and intensity of land utilization: the higher the intensification of the reproduction system the shorter the grazing period and the lower number of grazing animals. Besides, chances of continuity were critical in some groups of farms, especially in some of the most extensive ones, while many farms with good chances of permanence showed more intensive management strategies but lower utilization of grazing resources. In this type of agro-ecosystems, rural development policies with conservation purposes should focus on farming systems with more environmentally desirable management strategies, and consequently enhance their chances of continuity. 相似文献
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W. Drobik E. Martyniuk 《Acta Agriculturae Scandinavica, Section A - Animal Sciences》2014,64(1):36-48
AbstractThe study aimed to identify important factors threatening genetic diversity within small sheep populations, and to propose sustainable management strategies. Demographic evolution, genetic diversity and current genetic management practices were analyzed in a population of Polish Olkuska sheep. Unbalanced contributions of individual rams to the next generation were observed due to differences in the period of their utilization, the number of progeny and the number of daughters used in reproduction. Matings between closely related animals were common. Pedigree completeness was satisfactory and inbreeding coefficient was high, 11.71% for lambs born in 2012. Relatively high values of potential and realized coancestries within flocks showed the importance of keeping more than one ram. The genetic conservation index and average relatedness coefficient, and their comparison between regions was helpful in considering management options. The information on genetic relationships and genetic conservation parameters of rams should be provided to breeders with simple interpretations. 相似文献
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生长绵羊的营养物质转化规律研究 总被引：1，自引：0，他引：1
本文以毛用型中国美利奴、毛肉兼用型东北细毛羊和肉毛兼用型长毛半血羊育成公羔为对象,运用消化代谢试验、间接测热和同位素稀释技术等手段,探讨营养物质在体内的转化规律,着重研究了养分消化、代谢、分配和沉积率及其受遗传和营养的影响。 相似文献
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常祺 《青海畜牧兽医杂志》2000,30(6):6-8
青海省饲养有大量的牦牛、藏羊。为了充分利用牛羊蹄资源,开发牛羊蹄食品,提高牛羊的综合利用价值,１９９９年１１月至２０００年１０月进行了“牛羊蹄食品生产工艺技术开发研究”。主 做了牛羊蹄营养成份分析,牛羊蹄碱法脱毛工艺研究,蹄筋涨发工艺研究,牛羊蹄及蹄筋软包装食品生产工艺研究等,取得了较为满意的成果。 相似文献
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Sithembele O. Qwabe Este van Marle-Köster Carina Visser 《Tropical animal health and production》2013,45(2):511-516
The Namaqua Afrikaner is an endangered sheep breed indigenous to South Africa, primarily used in smallholder farming systems. Genetic characterization is essential for the breed’s conservation and utilization. In this study, a genetic characterization was performed on 144 Namaqua Afrikaner sheep kept at the Karakul Experimental Station (KES), Carnarvon Experimental Station (CES), and a private farm Welgeluk (WGK) using 22 microsatellite markers. The mean number of alleles observed was low (3.7 for KES, 3.9 for CES, and 4.2 for WGK). Expected heterozygosity values across loci ranged between 46 % for WGK, 48 % for KES, and 55 % for CES, indicating low to moderate genetic variation. The analysis of molecular variance revealed that 89.5 % of the genetic variation was due to differences within populations. The population structure confirmed the differentiation of three clusters with high relationships between the CES and WGK populations. In the population structure comparison with Pedi and South African Mutton Merino sheep, limited hybridization between the Namaqua Afrikaner sheep and both of these breeds was observed. The results of this study will serve as a reference for genetic management and conservation of Namaqua Afrikaner sheep. 相似文献