The purification of Ostrich (Struthio camelus) egg-white lysozyme is reported. The quantitative amino acid composition, the molecular weight, the N-terminal sequence (34 amino acids) as well as kinetic studies allow to range this enzyme among the goose type lysozymes.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1007/BF01732553 | DOI Listing |
Philos Trans R Soc Lond B Biol Sci
February 2025
Department of Anatomical Sciences, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY 11794, USA.
In this review, we evaluate the differences between the pulmonary anatomy of birds and other sauropsids, specifically those traits that make the avian respiratory system distinct: a fully decoupled and immobilized, isovolumetric gas-exchanging lung separated from compliant ventilatory air sacs by a horizontal septum. Imaging data, three-dimensional digital anatomical models and dissection images from a red-tailed hawk (), common ostrich (), barred owl (), African grey parrot () and zebra finch () are used to demonstrate the anatomical variation seen in the pulmonary air sacs, diverticula and the horizontal septum. We address the current state of knowledge regarding the avian respiratory system and the myriad areas that require further study, including the comparative and quantitative ecomorphology of the bronchial tree and air sacs, the non-ventilatory functions of the sacs and diverticula, the fluid dynamics and anatomical mechanisms underlying unidirectional airflow, post-cranial skeletal pneumaticity, and how all of these factors impact reconstructions of respiratory tissues in extinct archosaurs, particularly ornithodirans (i.
View Article and Find Full Text PDFPhilos Trans R Soc Lond B Biol Sci
February 2025
Department of Zoology, University of Johannesburg, Auckland Park 2006, Johannesburg, South Africa.
The developing chorioallantoic membrane (CAM) of the ostrich () was studied between embryonic days 16 (E16) and E37. Egg masses and volumes were estimated prior to harvesting of the CAM. CAM volumes were obtained before the CAM was sampled for histology and transmission electron microscopy analysis.
View Article and Find Full Text PDFBMC Vet Res
February 2025
College of Animal Veterinary Medicine, Henan University of Animal Husbandry and Economy, No. 6 Longzihu University Area, Zhengdong New District, Zhengzhou, Henan, 450046, China.
Background: Cryptosporidium spp., Giardia duodenalis, and Enterocytozoon bieneusi are significant zoonotic protozoa causing gastrointestinal diseases in humans and animals. However, their prevalence and genotypic characterization in ostriches (Struthio camelus) remain poorly understood.
View Article and Find Full Text PDFOpen Vet J
December 2024
Department of Anatomy and Embryology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt.
Background: The significance of the ostrich (Struthio camelus) has increased recently due to the growth of the global ostrich farming industry. Morphological and diagnostic imaging of the ostrich head presents challenges for enhancing clinical treatment and veterinary care, particularly concerning surgical disorders in the head and paranasal sinuses.
Aim: This study aims to guide veterinarians in improving the accuracy of clinical diagnoses and treatment for upper respiratory tract and cranial conditions, particularly in surgical cases involving the head and paranasal sinuses.
Vet Med Sci
January 2025
Department of Surgery and Obstetrics, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, Bangladesh.
Captive ratites, including the ostrich (Struthio camelus), are susceptible to various gastrointestinal conditions. However, spontaneous cloacal prolapse is a relatively less frequent diagnosis. This report details the clinical management of cloacal prolapse in an ostrich, including a brief literature review.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!