scholarly journals Developmental morphological analyses on the preglottal salivary gland in Japanese quails ( Coturnix japonica )

Author(s):  
Mahmoud Osman Khalifa ◽  
Mahmoud Abd‐El Kareem ◽  
Wafaa Gaber ◽  
Taosheng S Li ◽  
Abdelmohaimen Mostafa Saleh
2021 ◽  
Author(s):  
Mahmoud Osman Khalifa ◽  
Mahmoud Abd-ElKareem ◽  
Wafaa Gaber ◽  
TS Li ◽  
Abdelmohaimen M. Saleh

Abstract To understand the development of the mucous preglottal salivary gland in Coturnix japonica (Japanese quail), morphological and histochemical studies were performed on 20 healthy Japanese quail embryos (aging from 10 th to 17 th incubation days) and 25 healthy quail chicks (aging from 0 th to 60 th days). The primordia of preglottal salivary gland was observed as an epithelial bud at the early embryonic stage, which then elongated and differentiated into secretory units by the end of this stage. In Japanese quails, the preglottal salivary gland was a mucous polystomatic tubulo-alveolar unpaired gland composed of two lateral portions and a middle one embedded into submucosa of the lingual root. The gland openings accompanied taste pore (8.17 μm) of taste buds associated salivary glands type; some skeletal muscle fibers embedded among secretory lobules extended from muscle cricohyoideus at 14 th day old quail chick. Also, both herbts corpuscles and secretory motor plexus could be detected among secretory lobules. Based on our investigations, the development of preglottal salivary gland could clearly be distinguished in the embryonic stage into prebud and bud stages at 10 th day old, cord and branching stages ended by cavitation at 11 th day old, canalization stage at 13 th day old, lobulation and secretory stages by the 17 th day old. This mucous secretion showed different histochemical reactions ended with highly alcinophilic mucous indicated highly sialomucin (acidic) content. Myoepithelial cells could be demonstrated at 17-day old quail embryo and there after, surrounded the secretory endpieces of the preglottal salivary gland.


2020 ◽  
Vol 6 (6) ◽  
pp. 94-100
Author(s):  
Serge-Olivier Konan KOUASSI ◽  
◽  
Yves Bénarèce Tra DJE BI ◽  
Soualio KAMAGATE ◽  
Mathieu Nahounou BLEYERE ◽  
...  

The study aims to determine the impact of dietary crude protein levels on the hematological parameters of Japanese quail from growth to ovipositor. To this end, five feeds with different crude protein levels (18, 20, 22, 24 and 26%) were supplied to 700 quails of three weeks of age. These were subdivided into six batches, including three batches of females and three batches of males for each feed group. After subjecting the quails to diets containing the different protein levels, four samples were taken at the fourth, fifth, sixth and seventh week of age. The samples taken were analyzed using an SYSMEX XN 350 automated hematological analyzer. The results of this investigation indicated that non-significant differences (P > 0.05) were observed in hematological parameters in both female and male quails. This study showed that dietary crude protein levels had no impact on the health status of Japanese quails. Keywords: Japanese quails, Crude protein, Hematological parameters.


2021 ◽  
Vol 9 (5) ◽  
pp. 913-916
Author(s):  
Khurshaid Anwar ◽  
◽  
Nakash Smark ◽  
Sartaj Khan ◽  
Kalim Ullah ◽  
...  

This study aimed to evaluate the effects of heat stress on quail hematological parameters two published papers on quails in 2013 were studied, analyzed and compared. Broiler Japanese quails (Coturnix coturnix japonica) were exposed to high ambient temperature (340C, 8hr/d, 0900-1700hr) in both papers. An increase in values of red blood cells count, white blood cells count, lymphocytes, heterophils and lymphocytes (H/L) ratio, Monocytes, packed cell volume, mean corpuscular hemoglobin, mean corpuscular hemoglobin concentration were recorded while a lower values of heterophils, basophils, eosinophils, mean corpuscular volume and hemoglobin concentration than normal were recorded in groups exposed to heat stress (340C) on day 42 in Japanese quails (Coturnix coturnix japonica). Hemoglobin concentration was least affected. The obtained results indicated that, rearing quail birds under high environmental conditions during the fattening period has a great adverse effect on blood parameters. To help maintain Japanese quail as an essential animal model further heat stress related research on modern ways is needed.


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