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Effect of seminal plasma cholesterol and triacylglycerides concentrations and sperm morphology on semen freezability in domestic cats (Felis silvestris catus).
Top Companion Anim Med
September 2024
Instituto de Investigaciones en Reproducción Animal, Faculty of Veterinary Sciences, La Plata National University, Argentina. Electronic address:
There is scarce information about the effect of sperm morphology and seminal plasma composition on cat semen freezability. Thus, this study aims to assess the effect of cat sperm morphology and seminal plasma cholesterol (CHOL) and triacylglyceride (TAG) concentrations on sperm post-thaw survival. Ejaculates (n = 49) were evaluated, and seminal plasma was separated and frozen until CHOL and TAG concentrations were measured.
View Article and Find Full Text PDFUltramicroscopic organization of the exterior olfactory organ in in relation to its spawning migration.
Open Vet J
January 2024
Zoology Department, Faculty of Science, Zagazig University, Zagazig, Egypt.
Background: Catadromous fishes have well-developed elongated olfactory organs with numerous lamellae and different types of receptor neurons related to their breeding migration.
Aim: The current study showed how the olfactory system adapted to the catadromous life. Our work declared the need of the migratory fishes for the sense of smell that is exhibited by a higher number of the olfactory lamellae and the receptor neuron verification in the olfactory epithelium.
Comparative ultrastructure of the olfactory system in the East African root rat (Tachyoryctes splendens) and the naked mole rat (Heterocephalus glaber).
Anat Histol Embryol
May 2024
Department of Veterinary Anatomy and Physiology, University of Nairobi, Nairobi, Kenya.
The ultrastructure of the olfactory system of most fossorial rodents remains largely unexplored. This study sought to investigate the functional structure of the olfactory mucosa and olfactory bulb of two species of fossorial rodents that have distinct behaviour and ecology, the East African root rat (RR) and the naked mole rat (NMR). Transmission electron microscopy and scanning electron microscopy were employed.
View Article and Find Full Text PDFDecreased eggshell strength caused by impairment of uterine calcium transport coincide with higher bone minerals and quality in aged laying hens.
J Anim Sci Biotechnol
March 2024
Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
Background: Deteriorations in eggshell and bone quality are major challenges in aged laying hens. This study compared the differences of eggshell quality, bone parameters and their correlations as well as uterine physiological characteristics and the bone remodeling processes of hens laying eggs of different eggshell breaking strength to explore the mechanism of eggshell and bone quality reduction and their interaction. A total of 240 74-week-old Hy-line Brown laying hens were selected and allocated to a high (HBS, 44.
View Article and Find Full Text PDFEffect of pearl guinea fowl eggshell ultrastructure and microstructure on keets hatchability.
Poult Sci
July 2023
Department of Biometry, Faculty of Agriculture and Biology, Institute of Agriculture, Warsaw University of Life Sciences, Warsaw 02-786, Poland.
Variability in shell structure is an evolutionary mechanism in birds that enables them to adapt to specific environmental conditions. This variability may also occur within the same species under the influence of individual indicators, such as the age or health status of females. While interspecies variation is quite obvious and easy to interpret, the reasons for intraspecies variation remain unclear.
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