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1.
本试验旨在研究不同不同育肥方式对天祝白牦牛效益的影响,试验结果表明：在暖季,利用丰盛的牧草对天祝白牦牛在草原上放牧抓膘,育肥效果好,效益非常显著;而在冷季,通过舍饲育肥的牦牛产肉量高,效益好。因此建议养殖户在暖季可以对天祝白牦牛进行放牧育肥,取得较高的经济效益,而在冷季利用养殖暖棚提高舍内温度的同时,对牦牛进行舍饲育肥,不但可以取得较高的经济效益,而且还可以错开牦牛上市高峰,调整出栏时间,缓解草场放牧压力。 相似文献
2.
正天祝白牦牛大都在枯草期到来之前集中出栏(9月中旬~11月中旬),造成短时间内市场供大于求,出售价格偏低。而春节期间市场需求旺盛,白牦牛肉供不应求,且供应的大都是箱装的冷冻肉,无新鲜牦牛肉供给。为了解决这一弊端,让白牦牛错开高峰期出栏,实现白牦牛肉四季均衡供给,延长市场供应新鲜肉的时间,提高出栏率,增加农牧民收入,在牧区开展了白牦牛冷季短期全舍饲育肥试验。1材料与方法1.1试验地点 相似文献
3.
为查清白牦牛生产力低的原因,对本地自然放牧的10群牦牛跟踪调查了3年,基本弄清了白牦牛牛群结构不合理,产犊率低是最基本的问题,在此基础上,提出了几项改进措施：公牛提前到2.5周岁出栏;基础牛群冷季采用放牧＋暖棚＋补饲的饲养方式;冷季出栏牛采用暖棚育肥待机出栏的方式。这些措施具有可行性并显示出明显的经济效益。 相似文献
4.
为研究冷季不同的育肥模式对天祝白牦牛育肥效益的影响,试验将20头3岁天祝白牦牛公牛随机分成AB两组育肥组,A组为暖棚栓系式育肥组,B组为敞篷自由采食型育肥组,以三个月为期,并对育肥前牦牛体重和育肥后牦牛体重平均日增重进行了测定,试验结果显示,在同样饲料饲喂的条件下,B组的育肥效果A育肥组,试验效果差异显著(P0.01)。 相似文献
5.
在大通县逊让乡逊布村华鑫肉牛养殖场选择育肥的100头高原牦牛作为试验牛群,冬春季利用暖棚对刚察牧区的牦牛进行短期育肥,采用一定混合精料加小麦秸秆,育肥4个月。结果表明,经冷季育肥后的大通县牦牛反季节出栏后经济效益显著,利用暖棚季节出栏是提升大通县高原牦牛经济效益的良好方法之一。 相似文献
6.
探索解决冷季枯草期天祝白牦牛掉膘问题,提高农牧民牦牛养殖经济效益。试验在天祝县"青黄交接"季10月下旬开始,试验组采用全舍饲方式保膘育肥;对照组选择在当地牦牛养殖大户中进行,以当地"放牧+补饲"方式养殖,试验期为120 d。试验组经过120 d全舍饲保膘育肥,绝对活增重达73.6 kg,日增重达0.61 kg,平均增重率为38.82%,试验组与对照组绝对活增重及日增重差异极显著(P0.01)。试验结果表明,冷季天祝白牦牛全舍饲方式牦牛保膘育肥,不仅可以实现牦牛保膘,还可实现育肥增重和牦牛错峰销售,产生较高经济效益。 相似文献
7.
[目的]为掌握高寒牧区冷季补饲青贮玉米秸秆对天祝白牦牛体重变化的影响。[方法]通过对天祝白牦牛采用燕麦青干草加不同比例青贮玉米秸秆分组补饲研究。[结果]表明,与传统补饲方式相对比,在同样放牧加补饲的条件下,试验组效果显著。[结论]试验组天祝牦牛体重前四月体重呈上升趋势,后两月才开始缓慢下降,具有显著的保镖效果,对照组体重冷季六个月一直呈下降趋势,保膘效果较差。 相似文献
8.
试验对用娟姗牛冻精杂交甘南牦牛所产的杂交一代娟犏牛公牛进行了育肥,分析其育肥效果和经济效益,为娟犏牛的生产提供基础性资料。将甘肃省夏河县牧区阿纳扎西等牦牛养殖专业合作社自然放牧的6月龄、18月龄和30月龄的38头娟犏牛,出售到本县的半农半牧区暖棚舍饲育肥90 d。结果表明:6月龄组娟犏牛净增重58.63 kg,平均日增重651.44 g,盈利521.12元/头,投入产出比1∶1.59;18月龄组净增重69.45 kg,平均日增重771.67 g,盈利603.80元/头,投入产出比1∶1.57;30月龄组净增重73.70 kg,平均日增重818.89 g,盈利705.80元/头,投入产出比1∶1.66。经显著性检验,娟犏公牛各年龄组之间育肥末期平均净增重和日增重均差异不显著(P>0.05)。说明采用异地暖棚舍饲育肥,反季节出栏,可取得明显的效果,且6月龄、18月龄、30月龄的育肥效果基本相同。因此,建议将当年产的6月龄娟犏牛公牛经过冬季舍饲暖棚育肥后当年反季节出栏,以减轻草场压力和增加牧民收入。 相似文献
9.
正牦牛具有耐高寒、适于粗牧、抗病力强等适应高原高寒生活条件的优点。随者草原载畜量过大,草原不同程度退化等条件制约,靠天放牧的牦牛养殖经济效益相对不高。为充分利用牦牛肉质细腻、营养价值高和纯天然绿色健康的绝对优势,不断提高牦牛养殖经济效益。近几年来,天祝县大力发展暖棚建设和牦牛舍饲育肥技术,牦牛育肥数量和规模逐年增加。肺热咳喘症在草原放牧牦牛兽医临床中比较少见,因饲料管理不当如棚舍空气环境、通风不 相似文献
10.
[目的]为研究繁殖母牦牛配种期营养对连产率的影响,并为实现天祝白牦牛"一年一胎"高效繁殖提供技术初探,在祁连山生态保护政策大环境下,传统畜牧业生产方式如何实现减畜增效提供参考。[方法]以天祝白牦牛繁殖母牛连产率为研究对象,通过相同草原环境下2个村组同一年产犊母牦牛中连胎母牛数所占比例进行对比,分析不同的饲养放牧方式对天祝白牦牛连产率的影响。[结果]结果表明:同等放牧环境下,以草定畜自然放牧方式,牛群数量相对减少,但比起传统扩群饲养环境下母牛连胎率提高了30%～40%,效果明显。 相似文献
11.
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
13.
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
15.
In late November 1991, 1883 clinics in Canada were sent a questionnaire to assess the status of Dirofilaria immitis in dogs in 1991 and there was a 60.0% response. There were 344,031 dogs tested for heart-worm (HW), 627 were found infected and the prevalence of HW infection was 0.18%. There were 417 dogs with HW in Ontario, 116 in Manitoba, 38 in Quebec, 53 in British Columbia, three in Alberta, and one in Nova Scotia. In British Columbia, all of the infected dogs but one were from the Okanagan valley which, as from 1991, is a new focus of infection in Canada. Most dogs with HW had not been on preventive medication in 1990, and the prevalence among dogs tested and unprotected was 0.59%. That prevalence was considerably higher in endemic areas. Companion dogs, over three years of age and maintained primarily outdoors in rural areas, were most frequently infected. One cat was diagnosed with D. immitis and 33 dogs had Dipetalonema reconditium. 相似文献
16.
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
17.
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
18.
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
19.
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
20.
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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