Morphological adaptations to induced changes in transepithelial sodium transport in chicken lower intestine (coprodeum): a study of resalination, aldosterone stimulation, and epithelial turnover

Elbrønd, Vibeke Sødring; Skadhauge, Erik; Thomsen, Lene; Dantzer, V.

doi:10.1007/s004410051083

Cited by 14 publications

(1 citation statement)

References 26 publications

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“…The ultrastructure was examined by the method of transmission electron Microscopy (TEM). The tissue was processed by routine methods for TEM as described by Elbrønd et al [20,21]. The area of interest was framed with silver paint and the tissue block meticulously cut from the stub and transferred to 100% pure ethanol.…”

Section: Broilers and Dietsmentioning

confidence: 99%

Effect of dietary vanadium on small intestinal morphology in broilers

Wang¹,

Cui²,

Peng³

et al. 2012

Health

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The objective of this study was to determine the effects of dietary vanadium on small intestinal morphology of broilers by the methods of light microscopy (LM) and transmission electron microscopy (TEM). A total of 420 one-day-old avian broilers were divided into six groups (seven replicates in each group and ten broilers in each replicate) and fed on a control diet or the same diet supplemented with 5, 15, 30, 45 and 60 mg/kg vanadium in the form of ammonium metavanadate for 42 days. In comparison with those in the control group, the intestinal villus heights were decreased (P < 0.05 or P < 0.01) in the 30, 45 and 60 mg/kg groups, and crypt depths and villus height/crypt depth ratio were decreased in the 45 and 60 mg/kg groups. Ultrastructurally, the microvilli were apparently sparse and short, and the numbers of lysosomes were increased in abovementioned three intestines in the 45 and 60 mg/kg groups at 42 days of age. In conclusion, dietary vanadium in excess of 30 mg/kg could alter the villus height, crypt depth, villus height/crypt depth ratio and ultrastructure, which might impact the development of small intestines in broilers.

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Section: Broilers and Dietsmentioning

confidence: 99%

Effect of dietary vanadium on small intestinal morphology in broilers

Wang¹,

Cui²,

Peng³

et al. 2012

Health

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Differences in epithelial morphology correlate to Na+-transport: A study of the proximal, mid, and distal regions of the coprodeum from hens on high and low NaCl diet

Elbrønd¹,

Dantzer²,

Skadhauge³

1999

J. Morphol.

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Location of the ureteral openings in the cloacas of tinamous, some ratite birds, and crocodilians: A primitive character

Oliveira

Silva

Santos

et al. 2004

Journal of Morphology

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Cloacas of 67 avian species, of both sexes, from various habitats and differing dietary habits, were examined macro- and microscopically to investigate possible variation in the location of the ureteral openings. Differing from most birds studied, in adult male Rhea americana and several tinamous species the ureters were found to open into the coprodeum. In these species the urodeum receives only the vas deferens or oviduct. Similarly, in crocodiles Caiman crocodilus yacare, but not in lizards Tropidurus montanus and snakes Crotalus durissus terrificus, the ureters empty into the coprodeum. This similarity between ancient birds (ratites and tinamous) and crocodiles may indicate a primitive character linking reptiles and birds. This unusual position of the ureteral orifice can represent an adaptation to facilitate urine collection into the coprodeum and large intestine. Another possibility is that this variation in ureter position is a male reproductive strategy to avoid the mixture of urine and semen in the cloaca. There were no evident correlations between the location of the ureteral openings and the birds' habitat, diet, or histology of the coprodeal mucosa. The occurrence of a phallus in eight species of birds was detected, as well as a peculiar vascularization related to the coprodeal epithelium of anseriformes. Together, these data add to the scarce information about the morphophysiology of the avian cloaca, and also contribute to clarify avian phylogenetic linkages.

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Morphological adaptations to induced changes in transepithelial sodium transport in chicken lower intestine (coprodeum): a study of resalination, aldosterone stimulation, and epithelial turnover

Cited by 14 publications

References 26 publications

Effect of dietary vanadium on small intestinal morphology in broilers

Effect of dietary vanadium on small intestinal morphology in broilers

Differences in epithelial morphology correlate to Na+-transport: A study of the proximal, mid, and distal regions of the coprodeum from hens on high and low NaCl diet

Location of the ureteral openings in the cloacas of tinamous, some ratite birds, and crocodilians: A primitive character

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