Against the backdrop of global warming and the rapid development of intensive dairy farming, heat stress in Holstein cows caused by high temperature and humidity in summer has become increasingly prominent, posing a key constraint to the efficient development of the dairy industry. Based on the physiological characteristics of Holstein cows, this paper systematically elaborated the scientific criteria for determining heat stress, thoroughly analyzed the multi-dimensional impact mechanisms of heat stress on physiological functions, lactation performance, nutrient metabolism, reproductive performance, and health status, and highlights comprehensive prevention and control technologies that combine physical environmental improvements with dietary management. The study aimed to provide theoretical foundations and practical guidance for scientifically implementing heat stress mitigation measures on dairy farms, thereby alleviating the adverse effects of heat stress on dairy production, ensuring cow health, improving production performance, and promoting sustainable development of the dairy industry.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |