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一、湖羊生产的现状我省的湖羊生产在连续九年下降的情况下,因市场的变异和产品结构调整而趋向稳定。其主要变化是: 1.存栏数趋向稳定。湖羊存栏数从1979年的129万头降到1988年的60.2万头,下降53.3%,其中前六年平均减少10.28万头,下降幅度8%;后三年平均减少0.57万头,下降1%左右。从出栏数看,近几年已不断上升,1980年出栏率只有10%左右,大部分是老弱病等淘汰羊,1986年出栏8.4万头, 相似文献
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湖羊为中国特有,分布于太湖流域,全国80%的湖羊和小湖羊皮产在浙江,主产于杭嘉湖,1987年,嘉兴市存栏湖羊39.02万头,占全省64.39%,桐乡县占全市的70.4%,随着生态环境的变化,饲养区域渐趋缩小,目前产区相当集中。笔者在参加地方专业志编写中经查阅、访问征集到历史档案、故籍中有关记述,写点《探 相似文献
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<正> 近几年湖羊生产连续下降,1981年湖羊总数150万余头,较1979年减少9%。主要产区的浙江省1979年129.08万头(历史最高年份是1965年169.94万头),到1984年仅87.86万头,截止今年10月份统计只75万头,减少54.08万头,下降72.11%。到春节期间还会有较大幅度的下降。羔皮收购数1980年浙江全省154万张,1983年为126.67万张,减少27.3万张,下降17.73%。 相似文献
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<正> 前几年,由于产区生态环境和饲料结构的变化,养湖羊的农民很少注意良种选育,使湖羊的优良特性得不到充分发挥。再加上部分农民着眼于现得利益“卖好留次”,造成小湖羊商品皮品质下降,养羊经济效益不高,致使湖羊生产连续7年下降。据浙苏沪湖羊育种委员会统计:1986年全国存栏85万头,比1985年同期减少 相似文献
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推广综合利用促进湖羊生产嘉兴市郊区农林局郑登蒿,王妙长嘉兴市郊区是湖羊主要产区之一,长期以来产品单纯依赖小湖羊皮,养羊经济效益下降,存栏头数急剧减少。全区1979年末,存栏湖羊14.29万头,1986年末仅5.3万头。为稳定湖羊生产,我们根据小湖羊皮... 相似文献
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《上海畜牧兽医通讯》2017,(1)
正湖州是湖羊原产地,也是全国湖羊主产区。湖州立足产业实际,将振兴湖羊作为"治水倒逼促转型"的重大举措之一,于2013年启动实施了《湖羊产业振兴三年行动计划》。历经近3年努力,目前全市湖羊存栏达到36.77万头,比振兴计划实施前增长41%。省、市领导先后对湖州湖羊产业发展情况作了重要批示,对湖州湖羊产业发展给予肯定并寄予厚望。 相似文献
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海盐地处杭嘉湖平原,为全国商品瘦肉型猪基地县和浙江省特色优势农产品(优质猪)布局规划区域。畜牧业是该县农村经济的一项传统产业,母猪存栏量一直保持在5万头左右。2004年前,90%以上为地方品种嘉兴黑猪,农户习惯采用人工授精技术,人工授精覆盖面在70%以上。2004年后,随着生猪 相似文献
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Evidence for the non-involvement of the uterus in the lifespan of the corpus luteum in the cyclic dog 总被引:1,自引:0,他引:1
Progesterone levels in peripheral blood of dogs were analysed during the cycle in which hysterectomy (n = 5) or sham surgery (n = 3) was performed as well as during the cycle of dogs (n = 5) hysterectomized at least one year prior to this study; the data were compared with the findings in control dogs (n = 3). The averages of the duration of the luteal period observed in the three experimental groups were not significantly different from those of control dogs. Immediately after surgery, the progesterone level decreased from 25 to 50% of the presurgical level, but returned to presurgical level in about four days. Prolactin levels were elevated for about 30 h after surgery. Nevertheless, the averages of the mean prolactin levels for each animal during the luteal period of the experimental groups were not significantly different from those of control dogs. It is concluded that in the dog, the uterus is not involved in the lifespan of the cyclic corpus luteum. 相似文献
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嗅源是军犬嗅觉作业训练的依据.军犬鉴别中嗅源能力的培养在整个鉴别训练中占有重要地位,关系到鉴别训练的成败和鉴别能力的提高.所以,军犬在嗅认嗅源时必须按照训犬员的指令充分、细致地感受嗅源气味,并且对嗅源气味产生兴奋反应.如何培养军犬充分嗅认嗅源以及及时解决嗅认过程中出现的问题,成为我们进行鉴别训练的关键.…… 相似文献
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Meschan EM Peham C Schobesberger H Licka TF 《Veterinary journal (London, England : 1997)》2007,173(3):578-584
As there is no statistical evidence that saddle fit influences the load exerted on a horse's back, this study was performed to assess the hypothesis that the width of the tree significantly alters the pressure distribution on the back beneath the saddle. Nineteen sound horses were ridden at walk and trot on a treadmill with three saddles differing only in tree width. Kinetic data were recorded by a sensor mat. A minimum of 14 motion cycles were used in each trial. The saddles were classified into four groups depending on fit. For each horse, the saddle with the lowest overall force (LOF) was determined. Saddles were classified as "too-narrow" if they were one size (2 cm) narrower than the LOF saddle, and "too-wide" if they were one size (2 cm) wider than the LOF saddle. Saddles two sizes wider than LOF saddles were classified as "very-wide". In the group of narrow saddles, the pressure in the caudal third (walk 0.63 N/cm(2)+/-0.10; trot 1.08 N/cm(2)+/-0.26) was significantly higher compared to the LOF saddles (walk 0.50 N/cm(2)+/-0.09; trot 0.86 N/cm(2)+/-0.28). In the middle transversal third, the pressure of the wide saddles (walk 0.73 N/cm(2)+/-0.06; trot 1.52 N/cm(2)+/-0.19) and very-wide saddles (walk 0.77 N/cm(2)+/-0.06; trot 1.57 N/cm(2)+/-0.19) was significantly higher compared to LOF saddles (walk 0.65 N/cm(2)+/-0.10/ 0.63 N/cm(2)+/-0.11; trot 1.33 N/cm(2)+/-0.22/1.27 N/cm(2)+/-0.20). This study demonstrates that the load under poorly fitting saddles is distributed over a smaller area than under properly fitting saddles, leading to potentially harmful pressures peaks. 相似文献
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Observations on the Pathology of the Spleen of the Cat 总被引:1,自引:0,他引:1
Abstract— Lesions were found in the spleen of four of sixty-three cats examined post mortem in the department, and comprised two examples of lymphosarcoma, one of chronic fibrinous peritonitis and one of subcapsular haematoma. Abnormalities were found in two cat spleens received from veterinary surgeons in general practice. In one cat the abnormalities were an haemangiosarcoma with secondary deposits in the liver and in the other extensive mast cell infiltration. In addition lesions were detected in the spleen of three of eighty-seven cats examined post mortem in general practice. The lesions were: multiple secondary deposits of adenocarcinoma from a primary tumour of the mammary gland, a ruptured spleen and a foreign body below the splenic capsule. Résumé— L'examen microscopique de soixante-trois chats pratiqué dans le service a permis de rencontrer quatre fois des lésions de la rate, dont deux lymphosarcomes, une péritonite capsulaire fibrineuse et un hématome sous-capsulaire. D'autre part des lésions ont été trouvées dans deux rates de chat expédiées par des vétérinaires exerçant en pratiaue générale. Chez un chat il s'agissait d'un htmangiosarcome avec métastases hépatiques et chex l'autre d'une infilt ation diffuse par des mastocyta. De plus, on a rencontré des llésions dnas la rate de trois chats parmi quatre-vingt sept autopsies effectuées dans le cadre d'une clientèle génárale. Ces iésions étaient dés métastases multiples d'un adénocarcinome dont la tumeur primitive siègeait dam la glande mammaire, une rupture de la rate et un corps érangers sou capsulaire. Zusammenfassung— Läsionen der Milz wurden bei vier von dreiuiidsechzig in dieser hbteilung sezierten Katzen gefunden, und zwar in zwei Fällen ein Lymphosarkom, in einem Falle eine chron-ische fibrinöse Peritonitis und in einem ein subkapsuläres Hématom. Anomalien fanden sich auch in der Milz von zwei Katzen, die aus der tierxrztlichen Praxis eingesandt wurden. Bei der einen Katze war dies ein Hämangiosarkom mit Metastasen in der Leber, bei der anderen eine weitläufige Infiltration der Mastzellen. Außerdem wurden bei drei von siebenundachtzig in der Praxis sezierten Katzen Milzläsionen gefunden. Diese bestanden am multiplen Metastasen eines Adenokarzinoms der Brustdrüse, einer Milzzerreissung und einem Fremdkörper unterhalb der Milzkapsel. 相似文献