• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Animal Production Science >Impact of simulated semiarid tropical environmental conditions on growth, physiological adaptability, blood metabolites and endocrine responses in Malpura ewes
【24h】

Impact of simulated semiarid tropical environmental conditions on growth, physiological adaptability, blood metabolites and endocrine responses in Malpura ewes

机译：模拟的半干旱热带环境条件对马尔普拉母羊生长，生理适应性，血液代谢产物和内分泌反应的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The study was conducted to develop a simulated heat stress model for sheep depicting natural environmental conditions and to observe its impact on growth, reproductive performance, physiological adaptability, blood metabolites and endocrine responses in Malpura ewes. The experiment was conducted on 16 adult Malpura ewes for a period of 35 days. The animals were randomly divided into two groups of eight animals each (GI - control, GII - heat stress). The GII ewes were exposed to different temperature at different hours of the day i.e. 38 degrees C at 1000-1100 hours; 40 degrees C at 1100-1200 hours; 42 degrees C at 1200-1300 hours; 43 degrees C at 1300-1400 hours; 44 degrees C at 1400-1500 hours and 42 degrees C at 1500-1600 hours in a climatic chamber. Feed intake (P < 0.01), bodyweight (P < 0.05) and body condition score (P < 0.01) reduced significantly in GII as compared with GI ewes while water intake increased significantly (P < 0.01). All physiological responses also showed significant variation between the groups for treatment. In addition, all endocrine parameters showed highly significant (P < 0.01) variation for the treatment. Plasma cortisol increased significantly (P < 0.01) while T-3 (P < 0.01) and T-4 (P < 0.01) decreased significantly in GII as compared with GI ewes. Further, plasma oestradiol decreased significantly (P < 0.01) while plasma progesterone increased significantly (P < 0.01) in GII as compared with GI. Among the biochemical parameters, hemoglobin, packed cell volume, plasma glucose, total cholesterol, urea and blood urea nitrogen differed significantly between the groups. In addition, oestrus duration also significantly (P < 0.05) reduced in GII as compared with GI. Based on the results obtained from the study it can be concluded that simulated heat stress influenced the adaptive behaviour of sheep in terms of changes in physiological, blood biochemical and endocrine responses. Ultimately, their growth and reproductive performance are compromised during the process of adaptation to the simulated heat stress.
机译：进行该研究以开发描述自然环境条件的绵羊模拟热应激模型，并观察其对马尔普拉母羊生长，繁殖性能，生理适应性，血液代谢产物和内分泌反应的影响。该实验在16头成年的马尔普拉母羊身上进行了35天。将动物随机分为两组，每组八只动物（GI-对照，GII-热应激）。 GII母羊在一天中的不同小时（即38摄氏度，1000-1100小时）处于不同的温度下; 1100-1200小时为40摄氏度; 1200-1300小时为42摄氏度; 1300-1400小时为43摄氏度;在气候室内，在1400-1500小时内为44摄氏度，在1500-1600小时内为42摄氏度。与胃肠母羊相比，GII的采食量（P <0.01），体重（P <0.05）和身体状况评分（P <0.01）显着降低，而取水量则显着增加（P <0.01）。所有生理反应也显示治疗组之间的显着差异。此外，所有内分泌参数均显示出治疗的显着差异（P <0.01）。与GI母羊相比，GII中血浆皮质醇显着增加（P <0.01），而T-3（P <0.01）和T-4（P <0.01）显着下降。此外，与GI相比，GII中血浆雌二醇显着降低（P <0.01），而血浆孕酮显着升高（P <0.01）。在生化参数中，两组之间的血红蛋白，细胞堆积体积，血浆葡萄糖，总胆固醇，尿素和血液尿素氮显着不同。此外，与胃肠道相比，GII中的发情持续时间也显着减少（P <0.05）。根据从研究中获得的结果，可以得出结论，模拟的热应激会根据生理，血液生化和内分泌反应的变化影响绵羊的适应行为。最终，在适应模拟热应激的过程中，它们的生长和生殖性能受到损害。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号