饲喂秸秆微贮饲料对育肥南阳牛的增重效果试验

选用１８￣２４月龄南阳公牛２０头，随机分为试验和对照组，在精料水平相同情况下，分别喂以微贮和普通麦秸，观测微贮饲料对供试牛的增重效果。经过９０天饲养试验，试验组牛与对照组牛平均头总增重分别为７６．７ｋｇ和６１．２ｋｇ；平均头日增重分别为０．８５２ｋｇ和０．６８０ｋｇ。屠宰结果，试验组牛和对照组牛屠宰率分别为５５．６％和５３．２％；净肉率分别为４５．５％和４２．４％。试验组牛比对照组平均每头多产净肉     

补料对哺乳犊牛生长性能的影响

选用泌乳性能中等的当地母牛１５头和其平均出生日龄１１５天的利木赞杂一代哺乳公犊１５头。母，子牛自由采食青贮玉米结，犊牛补料配方为两种全价饲料，经７３天，补料试验，两个补料的试验组的平均日增重均显著高于不补料的对照组，其中试验１组平均日增重０．８２３ｋｇ，试验２组０．７９２ｋｇ。试验１组的平均总增重比对照组多２４．６５ｋｇ，试验２组则多２２．４５ｋｇ；试验１组的平均每ｋｇ额外增重所耗饲料２．７７ｋｇ     

天农肥育牛用添加剂饲喂肉牛试验

选择年龄２～３岁，体重３００～４００千克的夏洛来杂公牛，西门塔尔杂交牛及黑白花公牛等品种牛共２０头，用天津农学院研制的“天农肥育牛用添加剂”进行了肥育试验，结果表明：试验组牛平均日增重１．２８２千克，对照组牛为１．０１２千克，试验组比对照组牛平均头日增重多０．２７千克，经ｔ经验两组牛日增重差异显著（Ｐ〈０．０５），经济收益比对照组头日净协１．９３元。     

EM发酵饲料对育肥牛的增重效果

选择８头育肥牛随机分为两组，第组４头（３♀，１♂），试验组日粮中添加５０％的ＥＭ发酵饲料，对照组饲喂基础日粮。经５０ｄ试验，结果表明：试验组和对照组牛平均每头增重分别为３８．６３ｋｇ和３２．８１ｋｇ，试验组比对照组头均多增重５．８２ｋｇ，差异显著（Ｐ〈０．０５）。     

断奶过渡料对早期断奶仔猪生长性能影响试验

选用７６头２８日龄早期断奶公仔猪进行饲喂早期断奶过渡料和“３１１Ｓ”为的对比试验。表明试验组比对照组平均日增重提高２６．９６％，饲料转化率提高２．６３％，试验猪均无出现腹泻现象 。     

荷斯坦育肥牛饮喂甲醛液的增重效益试验

选用西宁市奶牛场荷斯衣肥牛１６头，随机分为试验组和对照组，每组为８头。试验组饮喂１５０ｐｐｍ甲醛液，对照组饮自来水，试验期５０天，结果表明：试验组和对照组平均增重分别为５１．００千克和２８．５０千克，日增重分别为１０２０克和５７０克，差异极显著（Ｐ〈０．０１）。     

牛羊浓缩饲料饲喂效果的研究

本试验选择60只羊、60头牛作为试验对象，分为羔羊试验组、育肥羊试验组、犊牛试验组和育肥牛试验组及其对照组，各试验组20头（只），对照组10头（只）。试验组牛羊用牛羊浓缩饲料饲喂，对照组用传统精饲料（玉米）饲喂，其它饲料和饲养条件一致。试验总天数为90d。试验结果表明：试验羊和牛日平均增重较对照组显著提高，说明能在生产中大面积推广应用。     

复合尿素添加剂代替豆饼饲喂小肥牛试验研究

作者对利用复合尿素添加剂代替豆饼饲喂小肥牛的增重效果进行比较试验，结果表明，试验组头均总增重１３６．０ｋｇ，日均增重１．１３ｋｇ，比对照组头均总增重１０９．０ｋｇ，日均增重０．９１ｋｇ分别提高２４．８％和２４．２％，组间增重差异显著。试验缓头均收益比对照组多２３５元。     

"母犊素"产母犊试验

一、材料与方法 1．试验牛的选择与分组。参加试验的牛有：新疆生产建设兵团122团的荷斯坦母牛370头，其中试验组牛160头，其余的210头为对照组；哈巴河县的80头杂种母牛全部为试验组；温宿县的640头母牛，品种分别为荷斯坦牛、西门塔尔牛、杂种牛和土种牛，分别设试验组和对照组，共有8个组，每组80头牛。     

秸秆的微贮及哺牛试验

为充分利用当地秸秆资料，１９９５～１９９６年作者在山西吕梁地区用微贮饲料（黄干玉米秸）饲喂６０头试验牛，对照组６０头牛所喂黄干玉米秸未作任何处理，育肥９０天，精料由玉米粉５６．１％，麸皮２１．４％，棉籽饼２０％，食盐０．５％，矿物质及其它添加剂０．３％组成，两组牛精日喂量均按平均体重的１％分两次饲喂，试验结果表明：试验组日增重为０．８９３ｋｇ，对照组为０．６５ｋｇ，试验组增重提高７２．８％，两组牛     

Scrapie in goats in Cyprus

Ovine scrapie was first recorded in Cyprus in 1985. Subsequently four dairy goats kept in two mixed flocks with affected sheep developed characteristic clinical signs similar to those seen in sheep. Fifteen goats from the two flocks were examined histologically and neurological lesions consistent with a diagnosis of scrapie were found in the four animals and in three others which had subsequently developed early neurological signs. These lesions were similar to those of naturally-affected sheep although neuronal degeneration and vacuolation were more severe in some cases.     

Heartworm in dogs in Canada in 1984

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.

     

Heartworm in dogs in Canada in 1983

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.

     

Heartworm in dogs in Canada in 1991

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.     

Heartworm in dogs in Canada in 1985

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.

     

Heartworm in dogs in Canada in 1988

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%).     

Heartworm in dogs in Canada in 1989

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.