Effects of in-yolk-sac administration of carvacrol on cholesterol resorption from yolk residuals and physiological adaptive indicators in broiler chicks exposed to neonatal fasting
Three hundred and twenty Ross 308 male broiler chicks were used to examine effects of in-yolk-sac (IYS) administration of carvacrol on cholesterol resorption from yolk and physiological adaptive responses of broiler chicks subjected to post-hatch fasting periods of up to 72 h. Effects of the four ex...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2016-06-01
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| Series: | Archives Animal Breeding |
| Online Access: | http://www.arch-anim-breed.net/59/249/2016/aab-59-249-2016.pdf |
| Summary: | Three hundred and twenty Ross 308 male broiler chicks were used to examine
effects of in-yolk-sac (IYS) administration of carvacrol on cholesterol
resorption from yolk and physiological adaptive responses of broiler chicks
subjected to post-hatch fasting periods of up to 72 h. Effects of the four
experimental treatments, namely non-handled control (NHCON), sham
injection control (SICON), polysorbate-80 injection (POLS), and carvacrol
injection (CARV), were examined in 5 replicates of 10 birds each. Liver
proportional weight was greater in carvacrol-injected chicks compared with
other birds 24 h post-hatch (<i>P</i> < 0.05). The mean blood glucose
concentration was 199.0 mg dL<sup>−1</sup> when chicks were removed from the hatcher baskets,
and decreased in all birds after being subjected to a 72 h post-hatch fasting.
However, the slope of decrease in serum concentration of glucose was slower
in carvacrol-injected birds than in the other birds, and they had a greater
plasma glucose level compared with NHCON and SICON birds after 72 h
post-hatch fasting. Lower plasma cholesterol levels were observed in
carvacrol-treated chicks compared with those subjected to the other
treatments at 72 h post-hatch (<i>P</i> < 0.05). Blood concentration of
calcium (Ca) was greater in carvacrol-injected birds at 24 h post-hatch than
in NHCON and SICON birds (<i>P</i> <  0.05), but at 72 h it significantly
increased in all birds, with the exception of carvacrol-treated chicks, which
had significantly lower blood Ca concentration (11.17 mg dL<sup>−1</sup>) compared with
other birds (<i>P</i> < 0.05). Blood potassium concentration increased in
polysorbate-80 and carvacrol-injected chicks 24 h post-hatch compared with
the NHCON and SICON birds (<i>P</i> <  0.05). In conclusion, the results of
the current study revealed that there was no direct interaction between
cholesterol and carvacrol leading to reduced cholesterol absorption from
yolk sac in newly hatched broiler chicks. |
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| ISSN: | 0003-9438 2363-9822 |