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1.
本研究对济南郊区卫生和管理条件较好的大型奶牛场临床型奶牛乳房炎和隐性奶牛乳房炎与胎次之间的关系进行了调查。结果表明,该奶牛场1～5胎次奶牛隐性乳房炎发病率高于临床型奶牛乳房炎发病率,而两种不同型的奶牛乳房炎发病率在6～9胎次奶牛表现相同,均为28.00%。临床型乳房炎除第3胎次稍有降低外,其余随胎次增多,发病率呈上升趋势。1胎、2胎、3胎、4胎、6～9胎的临床型乳房炎发病率分别为3.86%、8.04%、5.26%、9.00%、10.00%、28.00%,不同胎次间存在显著差异(P<0.05);不同胎次奶牛隐性乳房炎的发病率依次为16.49%、29.15%、31.58%、20.07%、22.22%、28.00%,其中第3胎次奶牛隐性乳房炎发病率显著高于其它胎次发病率,且各组间也具有差异显著性(P<0.05)。总之,该奶牛场随奶牛胎次的增加,乳房炎总发病率呈上升的趋势,6～9胎次奶牛乳房炎发病率最高,其次为2、3胎次。 相似文献
2.
乳房炎是世界奶牛业的主要危害因素之一,是奶牛发病率较高、造成损失较大的疾病。三峡库区奶牛现多以私营个体养殖为主。奶牛卫生较差,加之库区的高湿性气候,临床乳房炎发病率在15%～58%左右,隐性乳房炎发病率在30%～80%。 相似文献
3.
乳房炎是奶牛泌乳期发病率最高的一种疾病,奶牛乳房炎是一种世界性疾病,据统计,全世界奶牛乳房炎的发病率在48%,我国奶牛乳房炎的发病率较高,在50%～70%,美国奶牛乳房炎的发病率在16%～27%。奶牛临床型乳房炎主要的几种类型:1坏疽性乳房炎1.1临床症状乳房出现紫斑、肿胀、发热现象,触摸乳房有痛感,乳上淋巴结肿胀,产奶量急剧下降,严重者停 相似文献
4.
[目的]为分析昆明地区规模化奶牛场临床乳腺炎的发病情况及流行规律,从2003年6月至2006年5月,对昆明某奶牛场饲养的342～426头奶牛乳腺炎的发病情况进行为期3年的跟踪调查.[方法]应用奶牛临床乳腺炎诊断方法进行判定.[结果]表明:牛场奶牛临床乳腺炎平均发病率为8.35%,各年之间平均发病率(8.17%～8.63%)差异不显著(P＞0.05);月份之间最高和最低发病率相差5.22个百分点(6.57%～11.79%),差异显著(P＜0.05),不同胎次奶牛发病率差异较大(6.32%～16.67%),1～3胎次与4～7胎次奶牛发病率差异极显著(P＜0.01);日均产奶量分别为0～10 kg、10～20 kg、20～30 kg和30 kg以上的奶牛临床乳腺炎发病率(3.33%～11.88%)差异极显著(P＜0.01).乳区的平均发病率为9.35%(8.99%～9.80%),各乳区之间差异不显著(P＞0.05),乳区平均瞎奶头率为3.21%(1.60%～4.45%),后乳区的瞎奶头率极显著(P＜0.01)高于前乳区.[结论]昆明地区的奶牛乳房炎发病率无明显季节性差异. 相似文献
5.
乳房炎又名乳腺炎,是乳腺受到物理、化学、微生物刺激所发生的一种炎性变化,它是奶牛常见多发病之一。据报道,目前世界奶牛中有1/3患有该病,发病率在20%～60%,最高达80%。我国奶牛发病率一般在15%～40%,隐性的占到46%～85%。 相似文献
6.
采集100头商丘市成年中国荷斯坦奶牛的乳样300份,根据奶牛的年龄胎次等情况将之分成3组.利用酸度计、光学显微镜并辅以计数板辅助测定牛乳的pH值及体细胞的含量,分析奶牛隐性乳房炎与牛乳pH值的相关关系.结果表明当牛乳的体细胞在20万/毫升时,奶牛乳房炎发病率为0,3%,其乳汁的pH值在6.4～6.6之间:体细胞在20万～50万/毫升区间时,奶牛乳房炎发病率为11.2%,奶牛乳汁pH值在6.6～6.8之间:体细胞在50万～150万/毫升区间时,奶牛乳房炎发病率为26.1%,奶牛乳汁pH值在6.8～7.0之间;体细胞在150万～500 万/毫升区间时,奶牛乳房炎发病率为45.3%,奶牛乳汁pH值在7.0～7.2之间;体细胞大于500万/毫升时,奶牛乳房炎发病率为68.7%,奶牛乳汁pH值在7.2以上.牛乳pH值的变化与体细胞和炎性细胞的含量呈显著的正相关,相关系数r=0.387. 相似文献
7.
隐性乳房炎是奶牛最常见的疾病之一,不仅严重影响奶牛的产奶量和牛奶质量,还易转变为临床型乳房炎,影响奶牛的利用年限,给养牛业造成严重的经济损失.据有关资料报道,奶牛隐性乳房炎发病率极高,随着气候条件、饲养管理措施、泌乳月份的改变而改变.据资料介绍,黑龙江省安达市奶牛隐性乳房炎发病率为52.3%,苏州市牛奶公司一牧场奶牛隐性乳房炎发病率为54.06%,北京、上海、广州、哈尔滨等地的调查结果表明奶牛隐性乳房炎发病率为10%～40%,西欧发达国家奶牛隐性乳房炎发病率也高达25%. 相似文献
8.
据笔者多年来深入福建省宁德市奶牛养殖场、养殖户调查发现,奶牛不孕症是奶牛饲养中不可忽视的问题,发病率一般为30%～40%,因此要防止奶牛不孕症发生,降低发病率,必须注意以下几项综合防治措施. 相似文献
9.
乳房(乳腺)炎是奶牛的多发疾病。有资料显示,目前,世界各国奶牛乳房炎的发病率为20%～60%,最高可达80%左右。我国奶牛乳房炎的发病率也居高不下,一般在15%～40%左右,其中,隐性乳房炎阳性率也在46%～85%左右。据调查,呼和浩特地区养殖户奶牛乳房炎的发病率为36%,其中隐性乳房炎的发病率也在73%左右。乳房炎看似一般性奶牛疾病,但其危害是很严重的,不仅可使患牛出现局部病理变化,严重的会出现全身性病理反应,影响采食和膘情。更严重的是奶牛泌乳机能不同程度地下降,乳量减少,质量受损,最终饲养者因失去牛奶销售市场和淘汰奶牛而造成巨大的经济… 相似文献
10.
奶牛产后瘫痪是母牛分娩前后突然发生的一种严重的代谢性疾病。本文统计了伊犁某荷斯坦奶牛场2015年4月至2018年3月1 200头分娩奶牛生产瘫痪发病情况,分娩奶牛发生产后瘫痪104头,产后瘫痪平均发病率为8.65%,以1月、12月、2月发病率较高,为11.11%～13.89%;而4月、9月、10月发病率低,为6.61%～6.71%。高产奶牛在5胎以上产后瘫痪发病率达10.30%～11.79%,而第2胎发病率很低,在3.59%。本文着重对1例典型病例发病原因、临床症状及发病特点进行详细论述,采取补钙、补糖及结合乳房送风治疗效果明显,从而得出了一些治疗预防的方法,为减少养殖场奶牛产后瘫痪发病率提供了参考。 相似文献
11.
In late December 1983, 2 800 veterinarians across Canada were sent a questionnaire in order to assess the status of heartworm disease in Canada in 1983 and 26% of them responded. Veterinarians reported that 59 504 dogs were blood-tested to check for microfilariae and 771 dogs (1.30% of those tested) were found with Dirofilaria immitis. Heartworm disease was diagnosed in all provinces except New Brunswick and Newfoundland but most (733) of the cases were in Ontario. Heartworm disease was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 31% of the cases were observed with clinical signs of heartworm disease and 64% had a history of not having left Canada. Southwestern Ontario continues to be the focus of the infection and most of the dogs there had not left the province previously. 相似文献
13.
In late December 1985, 1485 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1985 and 44% of them responded. Veterinarians reported that 137,300 dogs were blood-tested to check for microfilariae and 1210 dogs were found with heartworm. Another 36 dogs were amicrofilaremic but diagnosed with heartworm disease to give the total number diagnosed in 1985 as 1247 (0.91%). Heartworm was reported from all provinces except Prince Edward Island, Newfoundland and Saskatchewan but most (1126) of the cases were in Ontario. Southwestern Ontario continued to be the primary focus of the infection in Canada. From Quebec, 91 cases were reported mostly from and around Montreal. From Manitoba, 19 cases were reported from Winnipeg and surrounding areas. Heartworm was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 28% of the cases were observed with clinical signs of heartworm disease and 78% had a history of not having left Canada. 相似文献
14.
In late November 1988, 1581 small and mixed animal clinics and institutional veterinarians across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1988, and 46% of them responded. Veterinarians reported that 181,577 dogs were blood-tested for heartworm disease and 367 dogs were found with D. immitis microfilariae. Another 60 dogs were amicrofilaremic but diagnosed with heartworm disease to give the total number of cases diagnosed in 1988 as 441 (0.24%). 相似文献
15.
In late December 1984, 1853 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1984 and 35% of them responded. Veterinarians reported that 97,794 dogs were blood-tested to check for microfilariae and 1417 dogs (1.45% of those tested) were found with heartworm. Another 34 dogs were amicrofilaremic, but were diagnosed as having heartworm disease, to give the total number diagnosed in 1984 as 1451 (1.48%). Heartworm was reported from all provinces except Prince Edward Island and Newfoundland but most (1310) of the cases were in Ontario. In Quebec, 126 cases were reported mostly from west of Montreal. Heartworm was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 27% of the cases were observed with clinical signs of heartworm disease and 72% had a history of not having left Canada. Southwestern Ontario continued to be the primary focus of the infection. 相似文献
17.
In late November 1989, 1732 clinics and institutional veterinarians were sent a questionnaire to assess the status of Dirofilaria immitis, and 51.7% responded. Of 247,716 dogs tested, 394 had D. immitis microfilariae and 51 were amicrofilaremic for a total of 445 cases and heartworm prevalence of 0.17%. Most (408) of these dogs had no preventive medication and the prevalence among dogs tested and unprotected was 1.01%. That prevalence was considerably higher in endemic areas. Thirty-seven dogs with heartworm had preventive medication. Heartworm was most frequent in companion dogs over three years of age maintained outdoors in rural areas. About 75% of the cases had never left Canada, 26% had clinical signs and 125 were not treated. Heartworm was reported from British Columbia, Manitoba, Ontario, Quebec, Nova Scotia and Newfoundland, but 383 cases were in Ontario. South-western Ontario was the primary focus of infection. There were 33 cases in Quebec and 24 in Manitoba, mainly found in and around Metropolitan Montreal and Winnipeg respectively. 相似文献
18.
In late November 1987, 1246 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1987, and 50% of them responded. Veterinarians reported that 165,428 dogs were blood tested for heartworm disease and 511 dogs were found with D. immitis microfilariae. Another 78 dogs were amicrofilaremic but diagnosed with heartworm disease to give the total number of cases diagnosed in 1987 as 589 (0.35%). 相似文献
19.
In late December 1986, 1224 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1986; 46% of them responded. Veterinarians reported that 150,989 dogs were blood-tested for microfilariae and 869 dogs were found with heartworm. Another 65 dogs were amicrofilaremic but diagnosed with heartworm disease and one was found with heartworm at necropsy to give the total number diagnosed in 1986 as 935 (0.62%). Heartworm was reported from Manitoba, New Brunswick, Ontario and Quebec, but most (810) of the cases were from Ontario. South-western Ontario continued to be the primary focus of the infection in Canada. There were 103 cases reported from Quebec, mostly from and around Montreal, and 21 cases from Manitoba, from Winnipeg and surrounding areas. Heartworm was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 33% of the cases were observed with clinical signs of heartworm disease and 81% had a history of not having left Canada. 相似文献
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