摘要:

Cranium and brainstem dimensions were measured in 32 postmortem dog heads. Positive correlations were found between cranium length (CL) and brainstem length (BL) (r=0.87), between cranium width (CW) and brainstem width (BW) (r=0.83), and between cranium distance (CD = CL CW/2) and brainstem distance (BD = BL+BW/2) (r=0.91). Positive correlation coefficients were also found between CL and CW (r=0.90), and between BL and BW (r=0.85). It was concluded that head size accurately reflected brainstem size. A least squares estimation of the brainstem distance (BD) from CL and CW values was BD = 10.9 + 0.16 (CL CW/2) (BD, CL and CW in mm).

ISSN:0165-2176    

DOI:10.1080/01652176.1992.9694347

出版商:Taylor & Francis Group    

年代:1992

数据来源: Taylor

摘要:

The effects of two putative stressors relative to the collection of blood, namely the environment of the treatment room and the pain associated with venepuncture, on plasma levels of luteinising hormone (LH), testosterone and cortisol were examined in six trained male experimental dogs. Blood samples were collected from the dogs in a treatment room as well as in the kennels (control), and by venepuncture as well as via an indwelling’ intravenous catheter (control). No significant influence of either stressor on plasma levels of LH, testosterone or cortisol was found Plasma concentrations of these hormones varied considerably both between and within dogs. Mean (± SEM; n = 6) plasma concentrations were 4.3 ± 1.0 μg/l for LH, 4.6 ± 1.9 nmol/l for testosterone and 68 ± 10 nmol/l for cortisol It was concluded that the putative stressors, the environment of the treatment room and the pain associated with venepuncture, did not significantly influence plasma levels of LH, testosterone or cortisol in trained male experimental dogs.

ISSN:0165-2176    

DOI:10.1080/01652176.1992.9694348

出版商:Taylor & Francis Group    

年代:1992

数据来源: Taylor

摘要:

This article deals with the ethical aspects of companion animal ownership. Research was done by means of interviews (n=40) and questionnaires (n=871). Respondents were randomly chosen from Dutch telephone directories. Euthanasia, docking tails, ear clipping and sterilisation are discussed on the basis of the opinions of respondents.

ISSN:0165-2176    

DOI:10.1080/01652176.1992.9694349

出版商:Taylor & Francis Group    

年代:1992

数据来源: Taylor

摘要:

Since purebred dog populations represent closed gene pools, a relatively high level of consanguinity between individuals, and hence of inbreeding, is common. This case control study was conducted to establish the possible connection between the actual level of homozygosity due to inbreeding and specific diseases (flea allergy, osteochondrosis, laryngeal paralysis, neoplasm, autoimmune disease, hypoplastic trachea, and food allergy) occurring in the Bouvier Belge des Flandres breed.

ISSN:0165-2176    

DOI:10.1080/01652176.1992.9694350

出版商:Taylor & Francis Group    

年代:1992

数据来源: Taylor

摘要:

Transmission ofF.hepaticaunder natural conditions was analysed in a three year programme. The variables used were the indirect haemagglutination (IHA) technique, worm establishment in tracer lambs and the population dynamics, infection rate and shedding pattern ofLymnaea truncatula.

ISSN:0165-2176    

DOI:10.1080/01652176.1992.9694351

出版商:Taylor & Francis Group    

年代:1992

数据来源: Taylor

摘要:

Polyethylene terephtalate‐covered identification transponders were injected in 4 week old piglets to examine clinically and histologically the reaction in the surrounding tissue after 4, 7 and 21 days and 6 months. Inflammatory signs at the injection site were clinically noticed from 2 days onwards and gradually decreased after day 3. A second series of inflammatory events occured in some animals around day 7. Swelling was observed thereafter in a few animals. In the pigs slaughtered at day 4, all samples showed a layer of exudate and debris surrounding the transponder. Afterwards a fibrous capsule developed. The mean thickness of reactive tissue decreased significantly (p<0.01) between days 4 and 7 and days 14 and 21, and remained unchanged between day 21 and 6 months. The mean (± s.e.) capsule thickness was 0.32 ± 0.12 mm after 6 months. It is concluded that PET‐covered transponders are encapsulated in fibrous connective tissue within 3 weeks after injection at the base of the ear. After 6 months the capsule around the transponder revealed no or only minor signs of inflammation.

ISSN:0165-2176    

DOI:10.1080/01652176.1992.9694352

出版商:Taylor & Francis Group    

年代:1992

数据来源: Taylor

摘要:

Inhibin and oxytocin were immunohistochemically demonstrated in all non‐atretic and light‐atretic follicles >2 mm from untreated and pregnant mare's serum gonadotrophin (PMSG)‐treated heifers and cows. Immunostaining for luteinizing hormone (LH) and oestradiol was observed in all non‐atretic follicles >4 mm, but only in follicles from PMSG‐treated cows. Inhibin and oestradiol immunoreactivity was restricted to the granulosa. Oxytocin and LH immunoreactiviity was visualized in both the theca interna and the granulosa. Within the granulosa, LH immunoreactivity was mainly present in cells that were located near the basement membrane. Normal granulosa cells differed from atypical granulosa cells (AGCs) with respect to their ability to bind LH and oestradid It is concluded that immunostaining for α‐inhibin, oxytocin, oestradiol and LH cannot be used as a marker of follicle quality to discriminate between non‐atretic follicles with AGCs and non‐atretic follicles without AGCs in mid‐luteal bovine ovaries.

ISSN:0165-2176    

DOI:10.1080/01652176.1992.9694353

出版商:Taylor & Francis Group    

年代:1992

数据来源: Taylor

摘要:

An enzyme‐linked immunosorbent assay (ELISA) with somatic (S) or excretory‐secretory antigens (ES) was compared with an indirect haemagglutination assay (IHA) for ability to detect antibodies againstFasciola hepaticain sheep. The specificity of both assays was determined by testing sera collected from sheep experimentally or naturally mono‐infected withFasciola hepatica, Haemonchus contortus, Ostertagia circumcincta, Cooperia curticei, Taenia ovis, Eimeriaspp., Trichostrongylus vitrinus, Trichostrongylus colubriformisorNematodirus battusrespectively. With S or ES antigens the specificity of the ELISA was 98% or 95% respectively, whereas the specificity of the IHA was 86%. Antibodies directed againstFasciola hepaticawere detected by the ELISA with S or ES antigens from 2 weeks after infection until the end of the experiment, whereas the IHA detected antibodies from week 3. We conclude that the ELISA with S antigens compares favourably with the IHA and can be used for the serodiagnosis of ovine fasciolosis in the Netherlands.

ISSN:0165-2176    

DOI:10.1080/01652176.1992.9694354

出版商:Taylor & Francis Group    

年代:1992

数据来源: Taylor

ISSN:0165-2176    

DOI:10.1080/01652176.1992.9694356

出版商:Taylor & Francis Group    

年代:1992

数据来源: Taylor

摘要:

A syndrome very similar to hepatic lipidosis is described in dairy cows during the dry period.

ISSN:0165-2176    

DOI:10.1080/01652176.1992.9694357

出版商:Taylor & Francis Group    

年代:1992

数据来源: Taylor