Effect of aspirin on perfoemance of laying hen and egg quality under heat stress
The experiment was conducted to study the effects of aspirin on laying performance and egg quality of hens in heat stress and the mechanism of the effects was examined. ROM laying hens of about 42 weeks of age were given a basal corn-soybean meal diet supplemented with 0,500, 1 000 and 1 500 mg/kg a...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Zhejiang University Press
2002-05-01
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| Series: | 浙江大学学报. 农业与生命科学版 |
| Subjects: | |
| Online Access: | https://www.academax.com/doi/10.3785/1008-9209.2002.03.0298 |
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| Summary: | The experiment was conducted to study the effects of aspirin on laying performance and egg quality of hens in heat stress and the mechanism of the effects was examined. ROM laying hens of about 42 weeks of age were given a basal corn-soybean meal diet supplemented with 0,500, 1 000 and 1 500 mg/kg aspirin respectively for period of 10 weeks. The results showed that the 500 and 1 000 mg/kg treatment significantly increased daily mean laying rate by 6.60% (P<0.05) and 7.46% (P< 0.05), decreased egg-feed ratio by 6.22% (P<0.05) and 7.05% (P<0.05). All the aspirin treatments improved egg shell weight and eggshell thickness (P<0.05), and decreased percentage of shell-less eggs compared with control (P<0.01). Aspirin apparently increased serum levels of alkaline phosphatase (AKP), calcium and phosphate (P<0.05), and decreased uric acid content (P<0.05), increased concentrations of serum follicle-stimulating hormone (FSH) (P<0.05), prostaglandins (PG) (P<0.01), parathormone (PHT) (P<0.05), and decreased concentrations of serum triiodothyronine (T3) (P<0.05), thyroxine (T4) (P<0.05), but no significant effects on serum levels of estradiol, progesterone and luteinizing hormone (LH) were found. |
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| ISSN: | 1008-9209 2097-5155 |