首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献，搜索用时 31 毫秒
1.
Abstract

Extract

Laryngospasm and bronchospasm add to the hazards associated with anaesthesia in both man and animals. Of one thousand anaesthetic deaths in Great Britain and Ireland reported to the Association of Anaesthetists between 1949 and 1955, it was found that fifty deaths were due to respiratory obstruction of one sort or another (Edwards et al., 1956 Adrian, E. D. and Bronk, D. W. 1929. The discharge of impulses in motor nerve fibres: Part II. J. hysiol. (Lond.), 67: 119–151.  [Google Scholar]). It has been stated that laryngeal spasm is perhaps potentially the most frequent source of respiratory obstruction during general anaesthesia in man (Gillespie, 1963 Allen, W. F. 1929. Effect on respiration, blood pressure and carotid pulse of various inhaled and insufflated vapors when stimulating one cranial nerve and various combinations of cranial nerves. III. Olfactory and trigeminals stimulated. Am. J. Physiol., 88: 117–129.  [Google Scholar]).  相似文献   

2.
Abstract

Extract

Muscular dystrophies (white muscle disease) do not appear tot be commonly encountered in the dog. Elvehjem et al. (1944) Cocks, L. V. and van Rede, C. 1966. Laboratory Handbook for Oil and Fat Analysts, 109–109. New York: Academic Press.  [Google Scholar] described the occurrence of a vitamin E-responsive muscular dystrophy in pups born to, bitches fed evaporated milk fortified with iron, copper manganese and cold liver oil. In New Zealand Money et al. (1971) Elvehjem, C. A., Gonce, J. E. and Newell, G. W. 1944. The effect of vitamin E on reproduction in dogs on milk diets. J. Pediatrics, 24: 436–441.  [Google Scholar] recorded an, advanced cardiac myopathy in a 2-week-old pup from a litter of three all of which had died after exhibiting signs of respiratory distress. Response to vitamin E treatment in a subsequently similar clinical disorder suggests that the pathological condition was probably due to a vitamin E deficiency Manktelow (1963) Hartley, W. J. 1967. Symposium: Selenium in Biomedicine, Westport, Conn.: O. H. Muth, Avi. Chapter 5 [Google Scholar], however, suggested that the disorders he had seen were possibly selenium-respoasive myopathies since they occurred in an area where ovine selenium-responsive disorders also occurred. His cases included an adult working dog that had lost the use of its hindquarters and two litters of young pups in which myocardial necrosis was the main lesion. This note is to record the occurrence of muscular dystrophy in a litter of four crossbred pups born to a bitch with a previously good breeding history.  相似文献   

3.
Abstract

Madam:— In October 1984 the Ministry of Agriculture and Fisheries (MAF) opened a voluntary scheme to accredit flocks free from caprine arthritis encephalitis (CAE). (1) Animal Health Division. 1984. A voluntary scheme to accredit flocks and herds free from caprine arthritis encephalitis infection (CAE). N.Z. vet. J., 32: 166–171.  [Google Scholar] The scheme was designed in consultation with the New Zealand Goat Council and the Council of the New Zealand Veterinary Association.  相似文献   

4.
Abstract

Extract

Neospora caninum is an apicomplexan protozoan parasite first reported in dogs (Bjerkås et al., 1984 Bjerkås, I, Mohn, SF and Presthus, J. 1984. Unidentified cyst-forming sporozoan causing encephalomyelitis and myositis in dogs. Zeitschrift für Parasitenk, 70: 271–274. [Crossref], [PubMed], [Web of Science ®] , [Google Scholar]; Dubey et al., 1988a Dubey, JP, Carpenter, JL, Speer, CA, Topper, MJ and Uggla, A. 1988a. Newly recognized fatal protozoan disease of dogs. Journal of the American Veterinary Medical Association, 192: 1269–1285. [PubMed], [Web of Science ®] , [Google Scholar], Dubey et al., 1988b Dubey, JP, Hattel, AL, Lindsay, DS and Topper, MJ. 1988b. Neonatal Neospora caninum infection in dogs: Isolation of the causative agent and experimental transmission. Journal of the American Veterinary Medical Association, 193: 1259–1263.  [Google Scholar]) and subsequently recognised as a cause of bovine abortion (Dubey and Lindsay, 1993 Dubey, JP and Lindsay, DS. 1993. Neosporosis. Parasitology Today, 9: 452–458.  [Google Scholar]). Natural N. caninum infections have been reported in other animal species including the goat, sheep, horse and deer (Dubey and Lindsay, 1996 Dubey, JP and Lindsay, DS. 1996. A review of Neospora caninum and neosporosis. Veterinary Parasitology, 67: 1–59. [Crossref], [PubMed], [Web of Science ®] , [Google Scholar]). The dog was recently identified as definitive host of the parasite (McAllister et al., 1998 McAllister, MM, Dubey, JP, Lindsay, DS, Jolley, WR, Wills, RA and McGuire, AM. 1998. Dogs are definitive hosts of Neosporu caninum. International Journal for Parasitology, 28: 1473–1478. [Crossref], [PubMed], [Web of Science ®] , [Google Scholar]). Neospora caninum has a worldwide distribution (Barber et al., 1995 Barber, JS, Holmdahl, OJM, Owen, MR, Uggla, A and Trees, AJ. 1995. Characterization of the first European isolate of Neosporu caninum (Dubey, Carpenter,Speer, Topper and Uggla). Parasitology, 111: 563–568.  [Google Scholar]; Duivenvoorden, 1995 Duivenvoorden, J. 1995. Neospora abortions in eastern Ontario dairy herds. Canadian Veterinary Journal, 36: 623–623.  [Google Scholar]; Jardine and Wells, 1995 Jardine, JE and Wells, BH. 1995. Bovine neosporosis in Zimbabwe. Veterinary Record, 137: 223–223.  [Google Scholar]; Stenlund et al., 1997 Stenlund, S, Bjorkman, C, Holmdahl, OJM, Kindahl, H and Uggla, A. 1997. Characterization of a Swedish bovine isolate of Neospora caninum. Parasitology Research, 83: 214–219.  [Google Scholar]; Thornton et al., 1991 Thornton, RN, Thompson, EJ and Dubey, JP. 1991. Neospora abortion in New Zealand cattle. New Zealand Veterinary Journal, 39: 129–133. [Taylor &; Francis Online], [Web of Science ®] , [Google Scholar]; Umemura et al., 1992 Umemura, T, Shiraki, K, Morita, T, Shimada, A, Haritani, M, Kobayashi, M and Yamagata, S. 1992. Neosporosis in a dog: The first case report in Japan. Journal of the Veterinary Medical Science, 54: 157–159.  [Google Scholar]) but the presence of N. caninum in Brazil has not been confirmed.  相似文献   

5.
Abstract

Extract

Arsenic poisoning of man and animals has been a problem since earliest times. That it is still a problem in livestock husbandry in New Zealand was shown by Staples (1964) Staples, E. L. J. 1964. Veterinary toxicology in New Zealand: A review of 1236 cases of poisoning. J. Sci. Technol. (Aberdeen), 10: 129–154.  [Google Scholar], who reported on 345 cases of poisoning diagnosed at Wallaceville Animal Research Centre over the period 1951 to 1960.  相似文献   

6.
Abstract

Extract

Sir,—Following letters of Mayhew and Stewart 1969) Mayhew, I. G. and Stewart, J. M. 1969. Nervous syndrome in dogs possibly associated with a thiamine deficiency. N.Z. vet. J., 17: 91–92. [Taylor &; Francis Online] , [Google Scholar]and Stirling (1969) Stirling, T. 1969. Possible thiamine deficiency in dogs. N.Z. vet. J., 11: 160–160.  [Google Scholar], I feel that the following case report may be of interest.  相似文献   

7.
Abstract

Extract

Michael (1889 Michael, A. D. 1889. On some unrecorded parasitic Acari found in Great Britain. J. Linn. Soc. London, 20(123): 400–406.  [Google Scholar]) recorded that while in Derbyshire, England, he found very active mites “running up and down the spines of hedgehogs with great rapidity” and described these as Symbiotes ( = Caparinia) tripilis, their most distinctive feature being three long hairs borne on the third and fourth pairs of legs. Michael figured the female mite but could find no males among his specimens. The mite is still found on British hedgehogs but as a rare; or occasional parasite (Morris and English, 1973 Morris, P. and English, M. P. 1973. Transmission and course of Trichophyton erinacei infections in British hedgehogs. Sabouraudia, 11: 42–47. [Taylor &; Francis Online] , [Google Scholar]). German hedgehogs, however, have been reported as dying from Caparinia infestations (Krumbiegel, 1930–1 Krumbiegel, I. 1930–1. Mammalia in Biologie der Tiere Deutschlands, 52: 324–324. Berlin [Google Scholar]) and no fewer than 72% of the hedgehog Erinaceus albiventris examined at Nairobi, Kenya, were infested with Caparinia erinacei (Gregory, 1974a Gregory, M. N. 1974a. Caparinia erinacei in Erinaceus albiventris, in press [Google Scholar], b Gregory, M. N. 1974b. Notoedric mange in African hedgehogs, in press [Google Scholar]). These African Caparinia were of low pathogenicity, feeding on exuded body fluids without burrowing into the skin. Another mite, Notoedres cati, often occurs in conjunction with C. erinacei and sometimes disables the hosts.  相似文献   

8.
Abstract

Extract

Sudden death after routine dosing of dogs with the anthelmintic, bunamidine, is probably due to the onset of ventricular fibrillation (Fastier et al., 1968 Fastier, F. N., Menrath, R. L. E., Ng, J. and Sharard, A. 1968. Induction of ventricular fibrillation with adrenaline in dogs pretreated with bunamidine hydrochloride. Proc. Univ. Otago med. Sch., 46: 64–66.  [Google Scholar]). However, it has not proved possible to discover conditions under which ventricular fibrillation can be obtained consistently in dogs by treatment with bunamidine and adrenaline. This makes it difficult to test in dogs what was thought would be a reasonable prophylactic measure, namely, administration of a beta-blocker. Treatment with such beta-blockers as propranolol has been found to reduce substantially the occurrence of ventricular arrhythmias in circumstances where sympathetic activity plays an important part in the initiation of the disorder (Lucchesi and Whitsitt, 1969 Lucchesi, B. R. and Whitsitt, L. S. 1969. The pharmacology of beta-adrenergic blocking agents. Prog. cardiovasc. Dis., 11: 410–430.  [Google Scholar]; Dollery et al, 1969 Dollery, C. T., Paterson, J. W. and Conolly, M. E. 1969. Clinical pharmacology of beta-receptor-blocking drugs. Clin. Pharmacol. Therap., 10: 765–799.  [Google Scholar]).  相似文献   

9.
Abstract

Extract

Sir:— In the 12 months since the completion of the trials reported in this Journal(1) Mackintosh, C.G. and van Reenen, G. 1984. Comparison of yohimbine, 4-aminopyridine and doxapram antagonism of xylazine sedation in deer (Cervtis elaphus). N.Z. vet. J., 32: 217–217. [Taylor &; Francis Online], [Web of Science ®] , [Google Scholar] over 3000 doses of yohimbine have been used to reverse xylazine sedation in deer at Invermay and in field trials throughout New Zealand. During this time four deer have suffered transient convulsions characterised by tetanic spasms, paddling of the limbs, inability to stand and rapid nodding of the head. This was accompanied by rapid blinking of the eyelids and grinding of the teeth. These signs abated in 5 to 10 minutes after which time the deer relaxed and regained its ftet in 10 to 20 minutes. In the 30 minutes prior to yohimbine administration these deer had received a single injection of xylazine (0.5 to 1.0 mg/kg) and on one occasion the xylazine was given in conjunction with Img of fentanyl and 8 mg azaperone (0.1 ml Fentaz). On each occasion the intention was to inject yohimbine at the recommended dose rate (1) Mackintosh, C.G. and van Reenen, G. 1984. Comparison of yohimbine, 4-aminopyridine and doxapram antagonism of xylazine sedation in deer (Cervtis elaphus). N.Z. vet. J., 32: 217–217. [Taylor &; Francis Online], [Web of Science ®] , [Google Scholar] (0.2 to 0.25 mg/kg) into the jugular vein and the convulsions commenced within five seconds of this injection. Normally it takes one to three minutes for reversal ofxylazine sedation to occur. Thus it is highly likely that these injections were intra- carotid, thereby resulting in a very high concentration of yohimbine in the cranial arteries. All four animals recovered and there were no apparent after effects. These convulsions occured more rapidly hut were less severe than those expcrienced with the combination of yohimbine and 4-aminopyridine reported in the earlier trail.(1) Mackintosh, C.G. and van Reenen, G. 1984. Comparison of yohimbine, 4-aminopyridine and doxapram antagonism of xylazine sedation in deer (Cervtis elaphus). N.Z. vet. J., 32: 217–217. [Taylor &; Francis Online], [Web of Science ®] , [Google Scholar]  相似文献   

10.
Abstract

Extract

Trimethoprim became generally available 3 years ago, following its original discovery as a unique antibacterial agent for combating diseases of both man and animals (Hitchings and Bushby, 1961 Hitchings, G. H. and Bushby, S. R. M. 5-Benzyl-2, 4-diaminopyrimidines a new class of systemic anti-bacterial agents. 5th Int. Congr. Biochem. Moscow. pp.165–165.  [Google Scholar]; Pugsley et al., 1969 Pugsley, D. G., Mwanje, L., Pearson, C and Blowers, R. 1969. Use of trimethoprim and sulphamethoxazole in tropical Africa: Typhoid fever; Salmonella typhi carriage and Staphylococcus aureus sepsis. Postgrad, med. J., 45: 95–99. Nov. 1969, Suppl. [Google Scholar]; McGuinness, 1969 McGuinness, B. W. 1969. A combination of trimethoprim and sulphamethoxazole in upper respiratory infection. Postgrad, med. J., 45: 99–101. Nov. 1969, Suppl. [Google Scholar]; McCaig, 1970 McCaig, J. 1970. A clinical trial using trimethoprim-sulphadiazine in dogs and cats. Vet. Rec., 87: 265–265.  [Google Scholar]; Barnett and Bushby, 1970 Barnett, Margaret and Bushby, S. R. M. 1970. Trimethoprim and the sulphonamides. Vet. Rec., 87: 43–51.  [Google Scholar]; Rehm and White, 1970 Rehm, W. F. and White, G. 1970. A field trial with trimethoprim and sulphadoxine in bacterial diseases of cattle and pigs. Vet. Rec., 87: 39–42.  [Google Scholar]; Craig 1972 Craig, G. R. 1972. The place of potentiated trimethoprim in the therapy of diseases of the skin in dogs and cats. J. small Anim. Pract., 13: 65–70.  [Google Scholar]).  相似文献   

11.
Abstract

Extract

Sir:— In the recent letter from N. Inglis,(1) Inglis, N. 1984. Leptospira icterohaemorrhagia infection in deer. N.Z. vet. J., 32: 179–179. [Taylor &; Francis Online], [Web of Science ®] , [Google Scholar] an infection by Leptospira icterohaemorrhagiae in deer is postulated on the basis of serological evidence. Results of antibody testing with other serovars of Leptospira would be most informative and would reveal cross-reactions, which are known to occur freyuently. Further, the strain of L. icterohaemorrhagiae antigen and the type of test used would be of great interest to readers. Seroconversion to L. icterohaemorrhagiae serovar copenhageni, has been well documented since 1951.(2) Kirschner, L. and Gray, W.G. 1951. Leptospirosis in New Zealand. Infection with Spirochaela in animals and man. N.Z. med. J. L. No. 278, : 342–342.  [Google Scholar]  相似文献   

12.
Abstract

Extract

Neospora caninum is a major cause of disease in cattle and dogs, manifesting with abortions in cattle, and hind limb paresis in mostly young dogs (1) Dubey, JP and Lindsay, DS. 1996. A review of Neospora caninum and neosporosis. Veterinary Parasitology, 67: 1–59. [Crossref], [PubMed], [Web of Science ®] , [Google Scholar]. Previous reports from New Zealand suggest that around 30% of bovine abortions may be due to Neospora (2) Thornton, RN, Thompson, EJ and Dubey, JP. 1991. Neospora abortion in New Zealand cattle. New Zealand Veterinary Journal, 39: 129–133. [Taylor &; Francis Online], [Web of Science ®] , [Google Scholar] (3) Thornton, R. 1992. Bovine abortions — Laboratory diagnosis 1991. Surveillance, 19: 24–24.  [Google Scholar] and that about 40% of recently aborted dairy cows have antibodies against Neospora (4) Reichel, MP and Drake, JM. 1996. The diagnosis of Neospora abortions in cattle. New Zealand Veterinary Journal, 44: 151–154. [Taylor &; Francis Online], [Web of Science ®] , [Google Scholar].  相似文献   

13.
Abstract

Extract

Parainfluenza type 3(Pl3) virus has been associated with upper respiratory disease of cattle in many countries (Hoerlein et al., 1959 Bögel, K. 1961. Virologische Undersuchungsbefunde bei Kalbern mit respiratoris-chem Syndrom unter besonderer Berucksichtigung der Parainfluenza 3 Myxovirus. Mh. Tierheilk, 13: 129–129. 162. [Cited by Jolly, R. D., (1967), N.Z. vet. J., 15: 43–4.] [Google Scholar]; Bögel, 1961 Campbell, R. S. F. 1972. “Virus diseases of cattle. Virology and Virus Disease”. In Proc. No. 16 of Course for Veterinarians, 132–132. University of Sydney.  [Google Scholar]; Reisinger, 1962 Carter, Margery E. and Hunter, R. 1970. Isolation of parainfluenza type 3 virus from sheep in New Zealand. N.Z. vet. J., 18: 226–227. [Taylor &; Francis Online] , [Google Scholar]; Jolly and Ditchfield, 1965 Curtis, R. A. and Sutton, R. H. 1972. Chronic granular rhinitis (nasal catarrh) of cattle. N.Z. vet. J., 20: 125–125. [Taylor &; Francis Online] , [Google Scholar]). However, PI3 virus has not been isolated from cattle with respiratory disease in New Zealand although a serological study found that 89.3% of cows had significant levels of antibody against PI3 virus (Pastier and Hansen, 1966). In most cases infections are subclinical, and there is little evidence to suggest that PI3 virus is an important cause of disease in New Zealand cattle (Jolly, 1967 Fastier, L. B. and Hansen, N. F. 1966. The occurrence of antibodies to bovine virus diarrhoea, infectious bovine rhinotracheitis and parainfluenza 3 viruses in sera from New Zealand cattle. N.Z. vet J., 14: 27–32. [Taylor &; Francis Online] , [Google Scholar]). This communication records an outbreak of upper respiratory disease in cattle from which PI3 virus was isolated.  相似文献   

14.
Abstract

Extract

Increasing references have been made in the recent veterinary literature to malacic diseases of the nervous system in sheep and other animals. Plowright (1954 Cordy, D. R. 19S4. J. Neuropath., 13: 330–330.  [Google Scholar]) and Innes and Plowright (1955 Hartley, W. J. 1956. N.Z.vet.J., 4: 129–129. [Taylor &; Francis Online] , [Google Scholar]) have described a focal symmetrical spinal poliomalacia of unknown aetiology in sheep in Kenya. In the U.S.A., Cordy (1954 Haymaker, W., Ginzler, A. M. and Ferguson, R. L. 1952. Military Surgeon, 111: 231–231.  [Google Scholar]) has described a focal symmetrical encephalomalacia of horses following the ingestion of a species of thistle, and Jensen et al. (1956 Hurst, E. W. 1940. Aust. J. exp. Biol. med. Sci., 18: 201–201.  [Google Scholar]) have described an idiopathic polio-encephalomalacia in cattle and sheep. In New Zealand, Hartley (1956 Innes, J. R. M. and Plowright, W. 1955. J. Neuropath., 14: 185–185.  [Google Scholar]) has described a focal symmetrical encephalomalacia (F.S.E.) of lambs that may be related to the sublethal effects of the toxin of Clostridium perfringens (welchii) Type D. Smith (1957 Jensen, Rue, Griner, L. A. and Adams, O. R. 1956. J. Amer. vet. med. Ass., 129: 311–311. [PubMed] , [Google Scholar]) has described widespread lesions of polio-encephalomalacia together with eosinophilic meningoencephalitis in sodium chloride poisoning of swine.  相似文献   

15.
Abstract

Extract

Theoretically, the life-cycle of the sheep metacestodes with their strobilate phase in dogs permits combinations of at least three methods of control. These are the prevention of dogs gaining access to larval cestodes, the chemical elimination of the strobilate and or the larval stage in the appropiate hosts, and the immunization of either the definitive or intermediate hosts or both. The first approach using arecoline hydrobromide primarilv as a diagnostic agent has reduced the prevalence of Echinococcus granulosus (Gemmell, 1968 Gemmell, M. A. 1968. The Styx field-trial. A study on the application of control measures against hydatid disease caused by Echinococcus granulosus. Bull. Wld Hlth Org., 39: 73–100.  [Google Scholar]). However, it did not markedly reduce the prevalence rate of Taenia hydatigena and may have been indirectly associated with an increase in that of Taenia ovis.  相似文献   

16.
Abstract

Extract

Sir,—Recently Mayhew and Stewart (1969 Mayhew, I. G. and Stewart, J. M. 1969. Nervous syndrome in dogs possibly associated with a thiamine deficiency. N.Z. vet. J., 17: 91–92. [Taylor &; Francis Online] , [Google Scholar]) described a nervous syndrome in dogs which they postulated could have been associated with a deficiency of thiamine.  相似文献   

17.
Abstract

Extract

Sir,—This condition has been recorded in Great Britain by Corcoran (1964 Bradley, R. 1964. Pityriasis rosea in pigs. Vet. Rec, 76: 1479–1480.  [Google Scholar]) and many of his observations are supported by Bradley (1964 Corcoran, C. J. 1964. Pityriasis rosea in pigs. Vet. Rec, 76: 1407–1409.  [Google Scholar]) and Done (1964 Done, J. T. 1964. Pityriasis rosea in pigs. Vet. Rec., 76: 1507–1508.  [Google Scholar]). In conversation with veterinarians in this country, it appears that the condition is occasionally seen, but it has not been recorded and this is the purpose of this communication.  相似文献   

18.
Abstract

Extract

Two problems usually emerge when the incidence of bovine tuberculosis is reduced as a result of systematic tuberculin testing and removal of reactors. First, it is clear that certain organisms related to the bovine tubercle bacillus can induce tuberculin hypersensitivity resulting in many nonspecific responses to the tuberculin test. Examples of organisms that can give such reactions are those causing Johne's disease, avian tuberculosis, human tuberculosis, so-called “skin tuberculosis” and anonymous mycobacteria (Paterson, 1956 Paterson, A. B. 1956. The incidence and causes of tuberculin reactions in non-tuberculous cattle. Adv. Tuberc. Res., 7: 101–129.  [Google Scholar]). Secondly, in some herds tuberculosis is not eradicated despite repeated testing.  相似文献   

19.
Extract

Abstract

Avian paramyxoviruses (PMV) and influenza viruses have been readily isolated from free-living birds throughout the world(1) Alexander, DJ. 1980. Avian paramyxoviruses. Veterinary Bulletin, 50: 737–752.  [Google Scholar] (2) Alexander, DJ. 1982. Avian influenza: Recent developments. Veterinary Bulletin, 52: 341–359.  [Google Scholar] and, in New Zealand, both these viruses have been isolated from wild waterfowls, particularly ducks(3) Austin, FJ and Hinshaw, VS. 1984. The isolation of influenza A viruses and paramyxoviruses from ducks in New Zealand. Australian Journal of Experimental Biology and Medical Sciences, 62: 355–360.  [Google Scholar] (4) Stanislawek, W. 1992. Survey of wild ducks for evidence of avian influenza viruses, 1989 and 1990. Surveillance, 19(1): 21–22.  [Google Scholar]. It is widely known that free-living birds could harbour PMV and influenza viruses and could act as natural reservoirs of these viruses. They have occasionally caused Newcastle disease (PMV-1) and influenza outbreaks in commercial poultry farms throughout the world(5) Turner, AJ. 1976. The isolation of fowl plague virus in Victoria. Australian Veterinary Journal, 52: 384–384.  [Google Scholar] (6) Johnson, DC, Maxfield, BG and Moulthroo, JI. 1977. Eoidemioloeic studies of the 1975 avian influenza outbreak in chickens in Alabama. Avian Disease, 21: 161–177.  [Google Scholar] (7) Alexander, DJ, Parsons, G and Marshall, R. 1984. Infection of fowls with a Newcastle disease virus by food contaminated with pigeon faeces. Veterinary Record, 115: 601–602.  [Google Scholar] (8) Forsyth, WM, Grix, DC and Gibson, CA. 1993. Diagnosis of highly pathogenic avian influenza in chickens: Bendigo 1992. Australian Veterinary Journal, 70: 118–119.  [Google Scholar]. However, similar outbreaks have not been reported from New Zealand.  相似文献   

20.
Abstract

Extract

As dairy herds get larger cows have to walk further, and foot care becomes more important. Lameness from bruising of the soles of the feet is a particular hazard (Tranter and Morris 1991 Tranter, W P and Morris, RS. 1991. A case study of lameness in three dairy herds. New Zealand Veterinary Journal, 39: 88–96. [Taylor &; Francis Online], [Web of Science ®] , [Google Scholar], especially on hard tracks with loose angular stones or grit (Clackson and Ward 1991 Clackson, DA and Ward, WR. 1991. Farm tracks, stockman's herding and lameness in dairy cattle. Veterinary Record, 129: 511–512.  [Google Scholar]. One way of reducing this problem might be to provide an overlay of woodchips on top of the normal hard track. This would provide a softer grit-free surface, which could be more comfortable for the cows.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号