摘要:

The use of a transabdominal or a transrectal scanning technique to visualize the uterus in goats is discussed. The results of sonographic imaging of normal (non‐pregnant, pregnant, postpartum) and abnormal (endometritis, hydrometra, fetal death) uterine structures are reviewed. In the goat, special attention must be paid to distinguishing between the sonographic image of hydrometra and early pregnancy. A case of hydrometra that developed in the presence of three dead fetuses is reported. It is concluded that, under field conditions, transabdominal scanning of goats, performed between days 40 and 70 after mating, yields information about pregnancy, fetal viability, and single or multiple pregnancy, while at the same time making possible a reliable differential diagnosis of pregnancy and hydrometra.

ISSN:0165-2176    

DOI:10.1080/01652176.1994.9694415

出版商:Taylor & Francis Group    

年代:1994

数据来源: Taylor

摘要:

Mammary leucocytes are the major contributors to natural defence against mastitis after a microorganism has entered the gland. This paper reviews the role of the neutrophil granulocyte during acute coliform mastitis in cows in the periparturient period. Qualitative and quantitative aspects of several neutrophil cell functions before and during experimentally induced infections are briefly discussed.

ISSN:0165-2176    

DOI:10.1080/01652176.1994.9694416

出版商:Taylor & Francis Group    

年代:1994

数据来源: Taylor

摘要:

Longitudinal growth of the appendicular skeleton in the growth plates and the adjacent metaphyseal area includes chondrocyte differentiation, proliferation, maturation, and hypertrophy in the physis and bone (re‐)modelling in the metaphysis. The rate and extent of longitudinal growth are regulated by interactions between biomechanical factors and endogenous growth regulators, i.e., systemic endocrine factors, and local paraor autocrine factors, that act on the growth plate chondrocytes. The most important endogenous regulators of growth and skeletal development are growth hormone (GH) and insulin‐like growth factors (IGFs), and calciotropic hormones, i.e., parathyroid hormone (PTH), vitamin D (vitD), and calcitonin (CT).

ISSN:0165-2176    

DOI:10.1080/01652176.1994.9694417

出版商:Taylor & Francis Group    

年代:1994

数据来源: Taylor

摘要:

Squamous metaplasia of the glandular epithelium was found in the palatine salivary glands of two canaries, originating from a flock in which there was a variable intake of egg food. The histological changes, in combination with the history, indicate a vitamin A deficiency as a result of a selective intake of foord as the most likely aetiology.

ISSN:0165-2176    

DOI:10.1080/01652176.1994.9694418

出版商:Taylor & Francis Group    

年代:1994

数据来源: Taylor

摘要:

Carbon transport was studied in vitro in preparations of trachea and bronchus from veal calves. The mean velocity varied from 4.2 mm/min in the main bronchi to 6.3 mm/min in the ventral trachea. In some locations no transport was observed. Stereomicroscopic evaluation of Alcian blue‐phloxine stained mucosal surfaces revealed differences in the appearance of the mucus layer between locations with and without mucus transport. It is concluded that quality and integrity of the mucus layer play an important role in mucus transport.

ISSN:0165-2176    

DOI:10.1080/01652176.1994.9694419

出版商:Taylor & Francis Group    

年代:1994

数据来源: Taylor