Structure of the sheep epidermis.     

D H Lloyd  S F Amakiri  D M Jenkinson 《Research in veterinary science》1979,26(2):180-182

The stratum corneum measured on fresh frozen sections was found to be considerably thicker than previously reported. It was uniformly permeated with sebum, which also formed an intact film over the skin surface and it could readily be divided into two zones. The living epidermis was approximately half as thick as the stratum corneum.  相似文献   

Reserves of efficiency and quality]     

V S Krivonosov  A M Kravets  R R E?mats 《Veterinariia》1979,(8):17-20

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The blood volumes and erythrokinetics of Ndama and Zebu cattle experimentally infected with Trypanosoma brucei.     

J D Dargie  P K Murray  M Murray  W I McIntyre 《Research in veterinary science》1979,26(2):245-247

The responses of susceptible Ndama and Zebu cattle to experimental infection with Trypanosoma brucei were compared using haematological, parasitological and radioisotopic methods. Animals of both breeds became anaemic, but this was more severe in the Zebu cattle, one of which died. Although the prepatent period was the same in animals of both breeds, the levels of the first and subsequent peaks of parasitaemia were higher in the Zebu. The anaemia was due to an accelerated rate of red cell break-down which was more marked in the Zebu cattle. Haemodilution was not a feature. There was no evidence of dyshaemopoiesis but iron reutilisation from degraded erythrocytes was impaired. The greater resistance of the Ndama to T brucei infection could not be attributed to the capacity of this breed to mount a more effective erythropoietic response than the Zebu.  相似文献   

The effect of in vitro antibacterial properties of bovine milk diets on the natural colonisation of newborn piglets with coliform bacteria.     

S Stephens  M John  J E Cooper 《Research in veterinary science》1979,26(1):21-24

The diets suitable for the hand rearing of piglets in incubators were examined. Diet A was based on cows' milk heated to 56 degrees C and had bacteriostatic and antiadhesive properties against Escherichia coli. Diet B was based on evaporated cows' milk and did not have these properties. The numbers of coliform bacteria naturally colonising the small intestines of newborn piglets fed entirely on these diets for one week did not differ significantly, however both were significantly higher than in control piglets suckled from birth. Faecal counts of coliforms were similar in all three groups. Examination of the bacteriostatic sensitivity of the isolated strains to sows' milk indicated a predominance of milk-sensitive strains colonising the suckled piglets and a predominance of milk-resistant strains in the piglets fed diet B. This diet-dependent colonisation could not be explained by the in vitro bacteriostatic properties of the diets alone.  相似文献   

Serological study on the occurrence of bovine leukosis in Switzerland]     

F Steck  H Kupferschmied  W Leemann  R Kaderli  W Bommeli  P Gafner  H K Sp?rri 《Schweizer Archiv für Tierheilkunde》1979,121(9):439-450

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An in vitro study of the replication of Mycoplasma ovipneumoniae.     

R M Major  J K Clarke  M R Alley 《New Zealand veterinary journal》1979,27(4):58-61

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Leptospirosis in pigs: the effectiveness of streptomycin in stopping leptospiruria.     

R T Hodges  J Thomson  K G Townsend 《New Zealand veterinary journal》1979,27(6):124-126

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Herpesvirus of orang-utan (H. pongo) and search for retrovirus in nonhuman primates.     

S Rasheed  M B Gardner 《Comparative immunology, microbiology and infectious diseases》1979,2(2-3):265-274

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The influence of temperature on the development of Moniezia expansa (Rudolphi, 1810) in oribatid mites     

V S Narsapur  J Prokopic 《Folia parasitologica》1979,26(3):239-243

The life cycle of Moniezia expansa was studied experimentally using 10 species of oribatid mites as intermediate hosts. Four of them became infected, namely Scheloribates laevigatus (76.2%), Sch. latipes (70.8%), Liacarus coracinus (20%) and Platynothrus peltifer (1.1%). The last was found for the first time to serve as intermediate host of M. expansa in Czechoslovakia. The development of the cysticercoid of M. expansa in the oribatid mites at 28 degrees C and 85% relative humidity is completed within 27 days. At 18-20 degrees C and the same relative humidity the development lasts even 97 days.  相似文献   

Scanning electron microscopic studies on males of trichinella species     

V Barus  F Tenora  R Wiger  T Genov  S Komandarev 《Folia parasitologica》1979,26(2):97-101

Ultrastructure of the cuticle and pseudobursa of adult males of four species of Trichinella has been studied by SEM. T. nativa differs markedly from T. spiralis, T. nelsoni and Trichinella sp. in the form of the pseudobursa. Trichinella sp. differs only slightly from T. spiralis and T. nelsoni. The ultrastructure of the cuticle revealed no characters suitable for the differentiation of the taxons under study.  相似文献