小尾寒羊羔羊死亡原因的调查

小尾寒羊羔羊死亡原因的调查陈立斌王庆义马清贤鞠春伟（七台河市畜牧局·１５４６００）我市１９９３年春从山东省引进小尾寒羊３００只，现已发展到１０００多只，１９９６年入冬以来，羔羊陆续发病死亡，有３处养羊户，羔羊９８只，发病死亡４４只，损失严重。我们对这...     

小尾寒羊羔羊最佳育肥期

为了探讨小尾寒羊羔羊的最佳育肥期，我们对３至８月龄的羔羊，在舍饲，中等营养水平下，进行了肥育性能的测定。试验结果是；３月龄盖羊，经６０天育肥，其日增重和饲料报酬较高。平均日增重达到１９４．５５ｇ，每增重１ｋｇ体重耗饲草４．３６ｋｇ，精料２．９ｋｇ，经济效益明显。     

小尾寒羊羔羊肉品质的研究

小尾寒羊羔羊肉品质的研究李玉阁（山东省济宁市畜牧工作站２７２１３７）前言＊羔羊肉生产是小尾寒羊开发利用的一条重要途＊径。近年来，对小尾寒羊羔羊的育肥性能已有一些研＊究，但对羔羊肉品质尚无报道。为此，笔者对６月龄的＊羔羊肉进行了综合品质分析，以提供其营...     

小尾寒羊羔羊快速育肥法

1.杂交改良:以多胎高产的小尾寒羊为母本,以国外引进的优良公羊为父本生产肥羔,屠宰率可达54％。 2.及时去势:用于育肥的羔羊应在出生后3周内去势,有利于提高羔羊的肉质,减少膻味。还可使羊性情温顺,便于管理,容易育肥。 3.早期断奶:在生产中,羔羊可在2月龄断奶育肥,以利于母羊提前配种,使种羊繁殖由2年3胎提高到1年2胎,从而提高小尾寒羊的繁殖率和产肉量。 4.定时驱虫:育肥的羔羊断奶后和入秋时分别驱虫1次,常用的驱虫药有:硝氯酚、硫双二氯酚、     

如何提高小尾寒羊羔羊成活率

小尾寒羊具有繁殖快、早熟、多胎、多羔等特点,抓好羔羊的孕、接、保工作是提高羔羊成活率,发展养羊业的关键。1 禁止近亲繁殖     

小尾寒羊羔羊培育的措施

调查分析发现，引入小尾寒羊的养殖户仍按当地传统的养羊方式进行饲养。母羊妊娠期体况差，尤其是妊娠后期膘情差；母羊产后精料过丰，而患乳房炎较多，影响了羔羊的哺乳，羔羊没有及时足量哺喂初乳，而造成对疾病抵抗能力差，下痢和肺炎发病率高，羔羊没有尽早训练采食精料和干划，而出现营养不足；养羊的设施条件差，冬季保温舍少；羔羊哺乳时间     

浅谈小尾寒羊杂交羔羊的饲养

小尾寒羊是我国优良的肉裘兼用地方绵羊品种之一，性成熟早，生长发育快，四季发情配种，尤为多胎多产。此外，小尾寒羊有体大、耐粗饲、抗病力强等优点。目前青海省广为引进以改良地方品种，提高产羔率和商品率，增强产肉性能。但养殖户缺乏科学饲养管理技术和方法，使羔羊死亡率较高而影响到发展前景，笔者认为应抓好如下环节。     

青海省小尾寒羊羔羊心电图的研究

对青海省繁殖的25只小尾寒羊羔羊的心电图进行了分析和研究。结果发现,被检小尾寒羊皆为窦性心律;平均R-R间期的时限为(0.399±0.120)s;心电轴显著右偏(+184.2±80.9°);在Ⅰ,Ⅱ,aVL,aVF,C1和A-B导联心电图上,QRS综合波以QS,rS或Qr为主要波型;在Ⅲ,aVR,C2和C3导联心电图上以qR或R为主要波型;Ⅱ导联心电图上各波和间期的时限(s)为:P波(0.031±0.007);QRS综合波(0.039±0.005);T波(0.047±0.014);P-Q间期(0.089±0.016);Q-T间期(0.226±0.040);Q-Tc间期(0.312±0.031);Q-Tr(0.937±0.092)。在被检小尾寒羊中发现窦性心律不齐(20.0%)、二度房室传导阻滞(4%)、室性期前收缩(4.0%)、双峰P波(8.0%)以及R或S波波峰分叉(12.0%)5种异常心电图。     

The effect of albendazole on nematode parasites in experimentally infected lambs.

Thirty-five complete oestrous cycles were studied in five nonpregnant camels (Camelus dromedarius) over a period of 15 months. The oestrous cycle did not have a luteal phase. During the cycle of 28 days the ovarian activity was strictly follicular. Follicles matured in six days, maintained their size for 13 days and regressed in eight days. Ovulation was non-spontaneous and required the stimulus of coitus. Manual stimulation of the cervix for 15 minutes did not induce ovulation. The external manifestations of the oestrous cycle as well as the changes in the ovaries and the genital tract were also studied.     

The effect of fenbendazole on nematode parasites in experimentally infected lambs.

Fenbendazole given orally to experimentally infected lambs at a dose rate of 5 mg per kg was found to be 100 per cent effective against three and 10-day larave and also against 20-day adults of H contortus, O circumcincta, N battus and T colubriformis. The same dose was also 100 per cent effective against 10-day, 17-day larvae and 27-day adult D filaria.     

日粮蛋白水平对小尾寒羊羔羊生长性能、营养物质表观消化率、氮排放和血清生化指标的影响

本试验旨在研究不同蛋白水平日粮对小尾寒羊公羔生长性能、营养物质表观消化率、氮排放和血清生化指标的影响,以期为小尾寒羊羔羊低蛋白科学饲养提供理论依据.试验选取 36只体重相近 [(18.05 ± 1.36) kg]、健康状况良好的3月龄小尾寒羊公羔,随机分为3组,每组12只.Ⅰ组饲喂低蛋白水平日粮(12.00%),Ⅱ组饲...     

放牧羔羊矿物质元素消化代谢变化规律的研究

选择健康、体重相近的20只4月龄哈萨克土种公羔羊进行消化试验,试验期为4个月,在试验开始断奶,20只羔羊分为2组。早晨出牧前给试验动物戴粪尿袋,称重后出牧,晚上归牧后称重,每月进行6 d的消化试验。各月龄矿物质元素消化量:钙、锰、镁、锌、铜、铁等6种矿物质元素的消化量的变化规律与体重的变化规律一致的,在整个试验期5月龄和7月龄显著高于其余月龄(P<0.05),而钴的消化量与体重的变化规律不一致,4月龄最高,与其余月龄间差异显著(P<0.05)。代谢量的变化规律与体重的变化规律是一致的,在整个试验期5月龄和7月龄显著高于其余月龄(P<0.05),以尿的形式排泄体外的矿物质元素含量不多,而以粪的形式排泄体外的含量多。     

Flystrike prevention on Merino lambs with the insect growth regulator dicyclanil

The efficacy of a ready-to-use 5% dicyclanil pour-on formulation as a preventative of natural flystrike on Merino lambs was investigated in a field trial involving 5 sites in the southern Cape Province. A total of 1,804 lambs treated with dicyclanil were compared with 882 untreated control lambs for up to 25 weeks after treatment. Efficacy was assessed by calculating the weekly cumulative strike rate at each site and aggregated for all sites, as well as by calculating the percentage reduction achieved in treated lambs. Cumulative strike rates for the untreated controls aggregated for all sites at Weeks 9,14 and 19 after treatment reached 6.2, 12.8 and 17.8%, respectively, compared with 0.4, 1.7 and 3.6% for the dicyclanil treated lambs. Percentage control aggregated for all sites at Weeks 9,14 and 19 after treatment was 93, 87 and 80%, respectively. Heavy rains during the 1st half of the trial did not substantially reduce the efficacy of the product.