| Autor: |
Shung CC; Department of Animal Science, National Chung Hsing University, Taichung 40227, Taiwan., Hsin KY; Department of Animal Science, National Chung Hsing University, Taichung 40227, Taiwan., Tan FJ; Department of Animal Science, National Chung Hsing University, Taichung 40227, Taiwan., Chen SE; Department of Animal Science, National Chung Hsing University, Taichung 40227, Taiwan.; The iEGG and Animal Biotechnology Center, National Chung Hsing University, Taichung 40227, Taiwan.; i-Center for Advanced Science and Technology (iCAST), National Chung Hsing University, Taichung 40227, Taiwan.; Innovation and Development Center of Sustainable Agriculture (IDCSA), National Chung Hsing University, Taichung 40227, Taiwan. |
| Jazyk: |
angličtina |
| Zdroj: |
Animals : an open access journal from MDPI [Animals (Basel)] 2023 Aug 10; Vol. 13 (16). Date of Electronic Publication: 2023 Aug 10. |
| DOI: |
10.3390/ani13162584 |
| Abstrakt: |
This study aimed to delineate the fundamental skin histology and its association with feathers in broilers and native Red-Feather (RF) chickens and further elucidate their thermal alterations in respect to the defeathering effect by scalding. Comparisons of skin thickness between fresh samples and those after dehydration and fixation, as well as their collagen contents and histological differences, suggested that RF chickens had a thicker dermal layer with more collagen deposition and compact architecture, particularly in the neck and abdominal skin, but a thinner hypodermal layer in the back, chest, and abdomen skin. Despite an adolescent age, RF chickens showed a shorter calamus depth of tail feathers but a larger calamus diameter of wing feathers. Within the feather follicle punch, a very intense follicle sheath layer with compact collagenous matrixes to fulfill the space next to the inner feather root sheath was observed in RF chickens. Under both soft and hard scalding, RF chickens showed a lower degree of denaturation on hip skins and were more resistant to structural disintegration, primarily within the epidermal and dermal layer. Accordingly, a much narrower gap space between the feather sheath and surrounding follicle sheath was observed, and the gap expansion was also resistant to thermal changes. These results suggest that the defeathering effect by scalding follows the intrinsic skin histologies in chickens of various breeds and ages, primarily depending on the interaction of the feather calamus with the surrounding follicle sheath and neighboring cutaneous tissues, reflecting their resistance to thermal denaturation, but is irrelevant to the feathers per se. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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