scholarly journals An anatomical perspective: does the male greater cane rat (Thryonomys swinderianus) have a scrotum?

2019 ◽  
Vol 8 (2) ◽  
pp. 1523-1530
Author(s):  
A.O. Adebayo ◽  
Z.A. Adegbesan ◽  
M.E. Okandeji ◽  
O.A. Mustapha ◽  
M.A. Olude ◽  
...  
Keyword(s):  
Mammalian Species ◽  
Hair Follicles ◽  
Scrotal Skin ◽  
Fine Hair ◽  
Rat Skin ◽  
Thryonomys Swinderianus ◽  
Greater Cane Rat ◽  
Thin Skin

We evaluated the anatomy of the “scrotal” skin pouch in an attempt to answer the question of whether (or not) there exist true scrotum in the greater cane rat (Thryonomys swinderianus). The “scrotal” skin folds from ten (10) matured male cane rats were morphologically and morphometrically studied with samples routinely processed for histology. Grossly, the pouch has features like fine hair on thin skin and longitudinal raphae typical of scrotum in other species. The histoarchitecture of the “scrotal” skin in the cane rat follows the normal scrotal pattern and the arrangements of the cutaneous strata, hair follicles and glands were similar in animals with perineal staining and those without perineal stain. The cane rat scrotal skin, though different in conformation from the scrotum of other mammalian species, has all the properties of a true scrotum thereby establishing the presence of scrotum in the greater cane rat.Keywords: Scrotum, Greater cane rat, Skin Pouch, Perineal staining

scholarly journals Comparative Analysis of Fecal Microbiota in Grasscutter (Thryonomys swinderianus) and Other Herbivorous Livestock in Ghana

2020 ◽  
Vol 8 (2) ◽  
pp. 265
Author(s):  
Kiyonori Kawasaki ◽  
Kenji Ohya ◽  
Tsutomu Omatsu ◽  
Yukie Katayama ◽  
Yasuhiro Takashima ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Fecal Microbiota ◽  
The Other ◽  
Meat Production ◽  
Thryonomys Swinderianus ◽  
Greater Cane Rat ◽  
Feeding Methods ◽  
16S Rrna Metagenomics ◽  
Fiber Fermentation ◽  
Competition For Resources

The grasscutter (also known as the greater cane rat; Thryonomys swinderianus) is a large rodent native to West Africa that is currently under domestication process for meat production. However, little is known about the physiology of this species. In the present study, aiming to provide information about gut microbiota of the grasscutter and better understand its physiology, we investigated the intestinal microbiota of grasscutters and compared it with that of other livestock (cattle, goat, rabbit, and sheep) using 16S rRNA metagenomics analysis. Similar to the other herbivorous animals, bacteria classified as Bacteroidales, Clostridiales, Ruminococcaceae, and Lachnospiraceae were abundant in the microbiome of grasscutters. However, Prevotella and Treponema bacteria, which have fiber fermentation ability, were especially abundant in grasscutters, where the relative abundance of these genera was higher than that in the other animals. The presence of these genera might confer grasscutters the ability to easily breakdown dietary fibers. Diets for grasscutters should be made from ingredients not consumed by humans to avoid competition for resources and the ability to digest fibers may allow the use of fiber-rich feed materials not used by humans. Our findings serve as reference and support future studies on changes in the gut microbiota of the grasscutter as domestication progresses in order to establish appropriate feeding methods and captivity conditions.

scholarly journals Immunohistological changes in skin wounds during the early periods of healing in a rat model

2012 ◽  
Vol 57 (No. 2) ◽  
pp. 77-82 ◽  
Author(s):  
F. Sabol ◽  
L. Dancakova ◽  
P. Gal ◽  
T. Vasilenko ◽  
M. Novotny ◽  
...  
Keyword(s):  
Wound Healing ◽  
Wide Spectrum ◽  
Smooth Muscle Actin ◽  
Healing Process ◽  
Skin Wound ◽  
Hair Follicles ◽  
In Vivo Model ◽  
Wound Healing Process ◽  
Rat Skin

The complexity of the wound healing process, which is still poorly understood, prompted us to perform an immunohistochemical investigation using rat skin as an in vivo model. Fifteen Sprague-Dawley rats were included in the experiment. Two round full thickness wounds, 4 mm in diameter, were made on the backs of all rats. Haematoxylin and eosin basic staining as well as antibodies against wide spectrum keratin, keratin 10, keratin 14, α-smooth muscle actin, vimentin, fibronectin, collagens Type 1 and 3, and the transcription factor Sox-2 were applied to paraffin and frozen sections of skin wound specimens two, six and fourteen days after surgery, respectively. New hair follicles with Sox-2-positive cells were present after fourteen days; keratin/vimentin positivity was restricted to specimens of day two. Collagen-3 expression prevailed over collagen-1 expression at all evaluated time intervals, except in the uninjured part of the dermis. In conclusion, rat skin wound healing is a dynamic process which can serve as a model for studying phenomena such as cell-cell interactions and transitions in vivo.

Gonadal and extragonadal sperm reserves of the domesticated adult African greater cane rat (Thryonomys swinderianus)

2010 ◽  
Vol 10 (2) ◽  
pp. 155-158 ◽  
Author(s):  
Samuel G. Olukole ◽  
Matthew O. Oyeyemi ◽  
Bankole O. Oke
Keyword(s):  
Thryonomys Swinderianus ◽  
Greater Cane Rat

Zonal Changes in the Ultrastructure of the Epididymal Principal cell of the Greater Cane Rat (Thryonomys swinderianus)

2016 ◽  
Vol 48 (1) ◽  
pp. 99
Author(s):  
Adebayo Adebayo ◽  
AO AO ◽  
Akinloye Akinloye ◽  
AK AK ◽  
Ihunwo Ihunwo ◽  
...  
Keyword(s):  
Principal Cell ◽  
Thryonomys Swinderianus ◽  
Greater Cane Rat

Anatomical and Immunohistochemical Characteristics of the Prostate Gland in the Greater Cane Rat (Thryonomys swinderianus)

2014 ◽  
Vol 44 (2) ◽  
pp. 138-145 ◽  
Author(s):  
A. O. Adebayo ◽  
A. K. Akinloye ◽  
S. G. Olukole ◽  
A. O. Ihunwo ◽  
B. O. Oke
Keyword(s):  
Prostate Gland ◽  
Thryonomys Swinderianus ◽  
Greater Cane Rat
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