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良好的饲养管理条件,是保证种鹅遗传潜力充分发挥的必要条件。在养鹅热与日俱增的今天,许多饲养场(户)仍需提高对鹅的生活习性和科学饲养管理的认识,否则易导致饲养失败,造成严重的经济损失。下面我将吉林正方农牧股份有限公司多年来饲养种鹅的经验推荐给读者,希望对大家能有所帮助。1雏鹅的饲养管理育雏是种鹅饲养的关键环节,成功的育雏将为种鹅以后的生长、繁殖打下良好的基础。1.1育雏前的准备育雏前一周要准备好育雏舍,对门、窗、地面、墙壁、天棚、水、电等设施进行检查和维修,并对育雏舍进行彻底清扫、洗刷、消毒(3%火碱),育雏用具用1… 相似文献
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陈光明 《畜牧兽医科技信息》2009,(11):72-73
目前,农区养鹅正从传统养殖方式向规模化、集约化方向转变,为了提高养鹅的生产水平和经济效益,需着重推广种草养鹅和秸秆饲料养鹅技术、加温育雏和网上育雏技术、配合饲料技术、种鹅高效繁殖技术、活拔鹅毛技术和鹅病综合防治技术. 相似文献
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肉用种鹅的价值取决于其生产性能的高低,而生产性能的高低取决于遗传育种和饲养管理两个基本因素。正确的饲养管理能使种鹅充分发挥其遗传潜力,获得最佳的生产性能。种鹅的育雏应比肉用商品鹅更加精心仔细,育雏季节最好在春季,而且其育雏舍应独立隔开。种鹅的育成期是指70～80日龄至开始产蛋这段时间,也称后备期,育成鹅也 相似文献
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肉州种鹅的价值在于其生产性能的高低，而生产性能的高低取决于遗传育种和饲养管理两个基本因素．正确的饲养管理能使种鹅充分发挥其遗传潜力，获得最佳的生产性能。种鹅的育雏应比肉用商品鹅更加精心仔细．最好育雏季节仡存季，而且其育雏舍应单独隔离。 相似文献
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笔者在种鹅场从事养鹅工作多年,近年应用的鹅网上育雏方法具有省工节料、保温成本低、易管理、鹅成活率高等优点。1.1选舍建网育雏舍宜建在地势干燥、安静、通风、温暖和采光条件较好的地方,舍内网床下面设有半倾斜水泥地面,利于冲洗和清扫粪便。每间育雏舍面积约60平方米、育雏500只鹅。可根据舍内空间,育雏网床的网架用角铁焊成,架高70厘米,长和宽分别为5.5米和1.5米,网床用铁网制成,周围用高约45厘米的铁网围栏,每张网床再用铁网分成5～6小格,每小格可养雏鹅15～20只,以防雏鹅互相挤压致死致残,影响育雏率。每间育雏舍可放置5张这样的育… 相似文献
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魏静 《四川畜牧兽医学院学报》2009,(4):28-32
在现代法律秩序中,商会自治规范是制定法的基础和必要的补充,甚至在某些方面替代了制定法;商会自治规范主要包括商会组织规范、行为规范、惩罚规范以及争端解决规范等;其效力仅及于其内部成员;商会自治规范和制定法之间存在冲突,但也存在整合的基础。 相似文献
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以国际标准强毒Ｒ株人工感染非免疫产蛋鸡,定时扑杀,分别从鼻窦、眶下孔、气管、肺、气囊、卵巢和输卵管分离ＭＧ,并收集感染鸡所产蛋分离ＭＧ。结果表明,人工感染４８小时后上、下呼吸道及肺已被全面感染,９６小时气囊已被感染,１２０小时输卵管已能分离到ＭＧ,卵巢始终分离不到ＭＧ。人工感染鸡自１４４小时便能在其所产蛋中分离出ＭＧ。药物治疗能在７２小时内消除感染,油乳剂苗则需２４天后逐渐降低蛋内ＭＧ分离率,药物卵内注射、种蛋药浴、高温处理均能杀死卵内ＭＧ,但以研制的种蛋浸泡剂药浴效果为最好。 相似文献
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本文概述了猪的毛色类型、猪的毛色遗传模式,着重综述了猪毛色基因分子基础的研究进展,指出存在问题并就未来发展方向做了思考。 相似文献
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REASONS FOR PERFORMING STUDY: Centesis of the bicipital bursa using an 8.9 cm long spinal needle has been reported but the alternative of employing a 3.8 cm long hypodermic needle requires validation. OBJECTIVE: To compare the efficacy of 2 different methods of centesis of the bicipital bursa and to evaluate the usefulness of ultrasonographic imaging to determine the location of solution administered when centesis of the bursa is attempted. METHODS: For Trial 1, 6 clinicians, who had no previous experience of centesis of the bicipital bursa, attempted to inject a solution composed of an aqueous radiopaque contrast medium and physiological saline solution (PSS) into the bicipital bursae of 2/12 horses using the previously described distal approach to inject one bursa and a proximal approach to inject the contralateral bursa. The bicipital tendon and bursa were examined ultrasonographically before and after injection; and both shoulders were examined radiographically to identify the location of the medium. In Trial 2, another 6 clinicians, also with no previous experience of centesis, repeated Trial 1, using 6 horses, but the radiopaque contrast medium was mixed with air instead of PSS. RESULTS: Accuracy of centesis using the proximal approach was 39% and that of the distal approach 28%. Ultrasonographic examination of the shoulder allowed the location of solution and air to be accurately predicted in all 12 shoulders examined. CONCLUSIONS: Clinicians who have had no previous experience performing centesis of the bicipital bursa are unlikely to be successful in centesis using either approach. Radiographic examination after injecting a radiopaque contrast medium may be necessary to assess the success of centesis especially if bursal fluid is not obtained during centesis. Injecting air along with the radiopaque contrast medium provides more accurate ultrasonographic confirmation of centesis and better radiographic definition than does injection without air. 相似文献
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