Two new species of Parapharyngodon collected from the intestine of the Mexican boulder spiny lizard Sceloporus pyrocephalus are described. This study increases to 49 the number of valid species assigned to Parapharyngodon worldwide, 11 of them distributed in Mexico. Males of the two new species share the presence of four pairs of caudal papillae, an anterior echinate cloacal lip and the presenc...

Tubular organs display a wide variety of surface morphologies including circumferential and longitudinal folds, square and hexagonal undulations, and finger-type protrusions. Surface morphology is closely correlated to tissue function and serves as a clinical indicator for physiological and pathological conditions, but the regulators of surface morphology remain poorly understood. Here, we expl...

In the present experiment, 320 one day old Ross 308 broiler chickens were used completely randomized design with 4 treatments, 4 replicates, and each replicate contained 20 broiler chickens. Experimental treatments include control, 0.5, 1, and 2% of Thymolina powder in chickens’ diet. Thymolina is an antibacterial powder drug which is made by composing 4 medicinal plants. A significant differen...

The ileocaecal junction mucosal surface morphology of 5 horses and 1 donkey was examined using scanning electron microscopy and light microscopy. Based on differences in surface morphology, the junction could be divided into 4 distinct regions. The distal extremity of the ileum was characterized by the presence of typical finger-like villi followed by a narrow zone displaying short, stubby vill...

The nematode Cucullanus robustus Yamaguti, 1935 (Cucullanidae) is redescribed from specimens collected from the intestine of Conger myriaster (Brevoort) (Osteichthyes) collected off the southern coast of South Korea in September 2005. Examinations of its morphology by both light and scanning electron microscopy (latter used in this species for the first time) revealed the presence of a previous...

Although weaning stress has been reported to impair intestinal barrier function, the mechanisms have not yet been elucidated. In the present study, the intestinal morphology and permeability and mRNA expressions of tight junction proteins and cytokines in the intestine of piglets during the 2 wk after weaning were assessed. The phosphorylated (activated) ratios of p38, c-Jun NH(2)-terminal kina...

For improving aquafeed sustainability, insect meal is currently considered the most promising alternative to fishmeal. However, in this regard, more data are still necessary avoid possible negative impacts on fish growth performance, metabolism, and welfare. The present study investigated effects of increasing inclusion Hermetia illucens (0%, 17%, 33% 50% feed, equating 0%, 34%, 66% 100% fishme...

A meta-analysis was conducted to examine the effect of supplementing diet broiler chickens with propolis on growth, bacterial population intestine, antiviral serum concentration, intestinal morphology, and digestive enzyme activities in chickens. Forty peer-reviewed articles that had been published between 2003 2019 were identified using PRISMA protocol included study. Data analysed mixed model...

In the study, effects of selenium on intestinal tissue morphology, antioxidant-related genes, and flora grass carp (Ctenopharyngodon idella) were studied. For this purpose, 180 healthy carps (20.0±2.0 g) randomly divided into three groups with replicates each: corresponding amount anhydrous sodium selenite was added to make experimental water solutions different concentrations, including 0 μg/L...

Glucagon-like peptide-2 (GLP-2) is a potent intestinotropic factor in neonatal and adult animals. However, the GLP-2 responsiveness of the fetal intestine has not been established. To determine how stage of development affects the responsiveness to GLP-2, we examined GLP-2 receptor (GLP-2R) expression, gut morphology, and brush-border enzyme mRNA and activities in late-gestation fetal (n = 7) a...