Comparative Study of the Histomorphological Structure of the Small Intestine of Lonchura striata and Copsychus saularis

Huang, Liyong; Nie, Qihang; Mou, Pan; Li, Jia; Kong, Ruiyang; Lan, Ruiyang; Lyv, Yingnan; Wu, Biao

doi:10.4067/s0717-95022022000401081

Cited by 2 publications

(1 citation statement)

References 21 publications

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“…In the course of evolution, the digestive system has undergone changes to facilitate flight: the teeth have disappeared, the digestive tract is shorter. Compared to mammals birds present heavier organs (liver, muscular stomach) gathered around the center of the weight (Denbow, 2000;Huang et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

The Comparative Anatomy of the Upper Digestive System in 26 Species of Zoophagous-Polyphagous Palearctic Birds

Preja,

Cipou,

Martonos

et al. 2023

Int. J. Morphol.

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Birds are the most diversified organisms on Earth, with species covering various niches in each major biome, being essential to understand the modern ecosystem. This study concentrates on the diversification of the anatomical structure of the upper digestive tract for 26 species of zoophage-polyphagous birds and the anatomical differences in the digestive system to reveal aspects related to their evolution and diversification. The trophic spectrum of the selected birds includes several categories of food, or, as in the case of strictly carnivorous birds, to a single food category. After performing the dissections, the digestive tract was separated from the carcass and each digestive segment was measured and analysed. In this study, it was demonstrated that the birds' feeding behaviour influence the macroscopic particularities of the digestive system, more visible in the cranial portion (oropharyngeal cavity, esophagus, proventriculus and gizzard), with little descriptive information in the literature. The tongue is poorly developed and immobile in piscivorous birds, while the tongue of insectivorous birds is long and moves considerably away from the tip of the bill. The esophagus was stretchable and presents longitudinal folds on its entire surface in piscivorous species and not extensible in insectivorous birds.

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Section: Introductionmentioning

confidence: 99%

The Comparative Anatomy of the Upper Digestive System in 26 Species of Zoophagous-Polyphagous Palearctic Birds

Preja,

Cipou,

Martonos

et al. 2023

Int. J. Morphol.

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Features of the growth and histostructure of the duodenum of japanese quails (Coturnix japonica) of the meat and universal direction

Zolotova,

Panina,

Semak

et al. 2024

Agrarnaâ nauka

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The article presents data on the relationship between the live weight, weight of the gastrointestinal tract and the productivity type of Japanese quail (Coturnix japonica domestica). It is shown that during the first week of the experiment, quails of the universal (dual-purpose) productivity type developed faster than the meat quails in terms of live weight, however, by the age of 28 days, this indicator becomes higher in meat quails. This pattern persists until the end of rearing. The relative weight of the gastrointestinal tract, as well as the duodenum, was higher in meat quails in the first week, and later it became less than in a universal type quail.The histological structure of the duodenum was also studied. On histological slides, the preservation of all layers of the duodenum is observed. The lamina propria of the mucosa is rich in lymphoid tissue. The submucosa is poorly distinguishable. The thickness of the mucosa of the duodenum prevailed throughout the experiment in quails of the universal type. In the first 7 days, the length of the duodenum villi was significantly higher than that of meat quails. The ratio of the length of the villi to the crypt increases with age in all groups of quails. In the first 7 days, this indicator was higher in quails of the egg-meat type, but by the 56th day it gradually leveled off. The depth of crypts (common intestinal glands) in the first week of growth prevailed in the intestines of meat quails (p ≤ 0.05).

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Comparative Study of the Histomorphological Structure of the Small Intestine of Lonchura striata and Copsychus saularis

Cited by 2 publications

References 21 publications

The Comparative Anatomy of the Upper Digestive System in 26 Species of Zoophagous-Polyphagous Palearctic Birds

The Comparative Anatomy of the Upper Digestive System in 26 Species of Zoophagous-Polyphagous Palearctic Birds

Features of the growth and histostructure of the duodenum of japanese quails (Coturnix japonica) of the meat and universal direction

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