Journal cover Journal topic
Archives Animal Breeding Archiv Tierzucht
Journal topic

Journal metrics

Journal metrics

  • IF value: 1.203 IF 1.203
  • IF 5-year value: 1.203 IF 5-year 1.203
  • CiteScore value: 0.98 CiteScore 0.98
  • SNIP value: 0.920 SNIP 0.920
  • SJR value: 0.390 SJR 0.390
  • IPP value: 0.89 IPP 0.89
  • h5-index value: 11 h5-index 11
  • Scimago H index value: 23 Scimago H index 23
Supported by
Logo Leibniz Institute for Farm Animal Biology Logo Leibniz Association
Volume 59, issue 2
Arch. Anim. Breed., 59, 173-181, 2016
https://doi.org/10.5194/aab-59-173-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Arch. Anim. Breed., 59, 173-181, 2016
https://doi.org/10.5194/aab-59-173-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Original study 15 Apr 2016

Original study | 15 Apr 2016

Association of heat shock protein 70 gene polymorphisms with acute thermal tolerance, growth, and egg production traits of native chickens in Taiwan

Hsiao-Mei Liang1,2,*, Der-Yuh Lin3,*, Yan-Der Hsuuw4, Tsung-Ping Huang5, Hsiu-Luan Chang6, Cheng-Yung Lin1, Hsi-Hsun Wu6, and Kuo-Hsiang Hung2 Hsiao-Mei Liang et al.
  • 1Kaohsiung Animal Propagation Station, Livestock Research Institute, Council of Agriculture, Pingtung 91247, Taiwan
  • 2Graduate Institute of Bioresources, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan
  • 3Livestock Research Institute, Council of Agriculture, Tainan 71246, Taiwan
  • 4Department of Biological Science and Technology, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan
  • 5Animal Propagation Department, Taiwan Sugar Corporation, Tainan 70176, Taiwan
  • 6Department of Animal Science, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan
  • *These authors contributed equally to this work.

Abstract. Heat stress is among the most challenging environmental conditions affecting commercial poultry. It severely affects growth and egg production, particularly in tropical and subtropical regions. This study aimed to examine physiological responses – including triiodothyronine (T3) levels, enzymatic activity of creatine kinase (CK) and lactate dehydrogenase (LDH), respiratory rates, and cloacal temperature – to acute heat stress associated with different genotypes of the HSP70 gene and to evaluate the association of these polymorphisms with growth and egg production. Genotyping was performed by single-strand conformation polymorphism analysis. The polymorphisms identified were A258A, A258G, and G258G. Twenty 12-week old birds were randomly selected from each genotype and exposed to 40°C ambient temperature for 1h. Blood samples were collected at 0 and 1h following heat stress. Respiratory rate and cloacal temperature were measured following 0, 30, and 60min of exposure. After 1h, the A258A genotype exhibited lower levels of CK activity and plasma T3. Neither respiratory rate nor cloacal temperature displayed a significant association with the genotypes. Body weight gain differed among the genotypes for males (F = 3.268, P = 0.041) and females (F = 14.029, P < 0.001), and the A258A genotype exhibited the greatest weight gain at 0–16 weeks of age for both genders. There were no significant differences among genotypes regarding egg weight at first egg or the number of eggs laid until 40 weeks of age. The A258A genotype displayed higher heat tolerance with no negative effects on growth performance and egg production.

Download
Citation
Share