摘要:

Veterinary practice today relies heavily on the many sophisticated products of the pharmaceutical industry. A wide generic range of chemicals is produced and their numbers are compounded by a proliferation of brand name products, some with only subtle differences in formulation or therapeutic claims, and often tagged with illusory price advantages over other similar products. How simple it was in the past!

ISSN:0048-0169    

DOI:10.1080/00480169.1981.34844

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

The 8 species of baleen whale in New Zealand waters range in length from 6 to 30+ metres, and the 25 species of toothed whale range up to 18 metres. A single porpoise species is known in New Zealand sub-Antarctic waters.

ISSN:0048-0169    

DOI:10.1080/00480169.1981.34845

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

Some clinical features of laryngeal hemlplegia in 127 horses arc described. Possible aetiologic factors were found in only 11% of affected animals. The onset of clinical signs was either sudden or insidious. The majority of cases were presented because of an abnkmal respiratory noise made at exercise. Other clinical signs, particularly those usually attributed to laryngopalatal dislocation, were observed in a substantial proportion of affected animals. In all cases surveyed the left arytenoid was affected, although in 3 animals a bilateral laryngeal dysfunction was noted. Thirty of 65 animals examined with a fibreoptic endoscope had other upper respiratory tract abnormalities in addition to abnormal arytenoid movements. Electrocardiographic examination of 45 affected horses did not reveal a significantly higher incidence ot abnormalltles than that observed in the racing population. The majority of haemograms taken from affected animals were also within normal limits.

ISSN:0048-0169    

DOI:10.1080/00480169.1981.34846

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

In this investigation electrical conductivity (EC) and somatic cell concentration (SCC) were compared in 3 herds for their ability to correctly identify the infection status of quarters. For EC, thresholds of 6.0 and 6.8 mS/cm were used and comparisons were made between quarters within each cow. The method of comparison between quarters was the same as that described by the manufacturers of the AHI Mastitis Detector. For SCC a threshold of 500 × 103cells/ml was used.

ISSN:0048-0169    

DOI:10.1080/00480169.1981.34847

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

Two hundred and ninety two dairy cows received a subcutaneous injection of a 25ml solution containing 10𝛍g GnRH-analogue (Receptal, Hoechst A.G.) O-6 hours before insemination, while 284 cows acting as controls were injected with 2.5ml of sterile pyrogen-free water at the same time. The two groups, the treated and the control, were formed by matching (pairing) each oestrous coti with another on the basis of interval from calving to first mating, condition score, and age on the day of first mating after calving. The cows were in 3 factory supply dairy herds, which were visited daily during the first 3 weeks of the mating season. All the cows presented for mating each day were inseminated by the same technician using 0.5ml of ambient-temperature semen containing 2 million spermatozoa per insemination. The semen used on any particular day originated from one ejaculate of one bull (same batch number). The cows were manually examined for pregnancy 2 to 3 months after their first insemination.

ISSN:0048-0169    

DOI:10.1080/00480169.1981.34848

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

Pneumonia of pigs is one of the more important disease factors limiting pig production. Of the varieties of pneumonia affecting this species enzootic pneumonia caused byMycoplasmaspp. is the most common and most important. The major effects of this disease are lowered food conversion ratio and poor weight gain. Deaths are usually the result of secondary infection by necrotising, pus-forming bacteria. Eradication of the disease is expensive and requires depopulation and restocking. Control and treatment by antimicrobial agents is most effective if the drug combination used takes regard of the bacteria complicating the disease on any particular property. Other forms of pneumonia such as those caused byHaemophilus pleuropneumoniae, Salmonella cholerae-suisand Aujeszky’s disease virus can be important on individual farms. The role of other agents such asBordetella bronchisepticaand adenoviruses in respiratory disease of pigs remain to be clarified.

ISSN:0048-0169    

DOI:10.1080/00480169.1981.34849

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor