Performance differences of Rhode Island Red, Bashang Long-tail Chicken, and their reciprocal crossbreds under natural cold stress
| Autor: | Xinghua Li, Wenjie Jiao, Xukai Yang, Yajie Li, Zhonghua Ning, Ya-Hui Gao, Shanshan Xie |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Cold tolerance lcsh:Animal biochemistry Biology Body weight Crossbreed Article 03 medical and health sciences Animal science Bashang Long-tail Chicken lcsh:QP501-801 Cold stress lcsh:SF1-1100 Ecology Environment and Management 0402 animal and dairy science 04 agricultural and veterinary sciences Egg Production Performance 040201 dairy & animal science Serum Biochemical Parameters Breed 030104 developmental biology Warm environment Serum glucose embryonic structures Cold Stress Animal Science and Zoology Cloacal Temperature lcsh:Animal culture Cold tolerant Rhode Island Red Food Science |
| Zdroj: | Asian-Australasian Journal of Animal Sciences, Vol 30, Iss 10, Pp 1507-1514 (2017) Asian-Australasian Journal of Animal Sciences |
| ISSN: | 1976-5517 1011-2367 |
| Popis: | Objective The Bashang Long-tail chicken (BS), an indigenous Chinese breed, is considered cold tolerant. We selected BS, the Rhode Island Red (RIR), and their reciprocal crossbreds for the present study. The objectives were: i) to validate whether BS is cold tolerant and whether egg production and cold tolerance of crossbreds could be improved; and ii) to determine the physiological characteristics that underlie cold tolerance and favorable egg production performance in cold environments. Methods A total of 916 chickens were reared in warm and natural cold environments (daily mean ambient temperature varied from 7.4°C to 26.5°C in the warm environment and from -17.5°C to 27.0°C in the cold environment). To investigate their adaptability to the cold environment, the egg production performance and body weight were monitored and compared between breeds and environments. The cloacal temperature and serum biochemical parameters were monitored to reveal the physiological characteristics underlie cold tolerance and favorable egg production performance in the cold environment. Results The warm environment experiment showed that RIR had the highest egg production performance, and that the reciprocal crossbreds had a higher egg production performance than BS. While in the cold environment RIR had the lowest egg production performance, and the reciprocal crossbreds had a higher egg production performance than BS. In the cold environment BS and reciprocal crossbreds had higher triiodothyronine, tetraiodothyronine levels than RIR. At 35 and 39 wk of age, when the ambient temperature was extremely low (varied from -20°C to 0°C), serum glucose, follicle-stimulating hormone, luteinizing hormone, estradiol of BS and crossbreds were higher than RIR. Conclusion Bashang Long-tail chicken has a favorable cold tolerance ability. Crossbreeding with RIR and BS is an effective way to develop cold tolerant chickens with improved egg production performance. |
| Databáze: | OpenAIRE |
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