General aspects of heat stress

Sun farming farm animals heat stress

Livestock have a “comfort” temperature

Animals may meet their productive potential when residing within their thermal comfort zone, known also as thermal neutral zone. When climatic conditions are above the animal’s thermal comfort zone, the animal expends energy to dissipate heat and reduces its feed intake in order to maintain its body temperature stable and enters a state of heat stress. Heat stress, leads to visible behavioral changes. For example, an increase in breathing rate, level of agitation animals, etc.

In addition, heat stress compromises immunity, making animals more sensitive to external challenges. Furthermore, heat stress affects the reproduction of both males and females with a decrease in fertility.

READ MOREMesure and understand the THI (Temperature Humidity Index)

In animals, which have a long productive cycle, such as ruminants, performance may remain sub-optimal for several months after the hot period. In breeding animals, heat stress also challenges offspring lifelong performance. Reduced birth weight, and immunocompetence are often observed.

To support animals during this period, the CCPA Group innovates with natural nutritional solutions that act on the causes and consequences of heat stress.

Incorporating complex and synergistic formulas, acting on multiple biological levels, these products are specific for each species and have rapid and visible effects.

Overview of the consequences of heat stress in animals

Figure 1. Consequences of heat stress in animals
  • Influence of heat stress not only on the animal itself but also on its offspring
  • Across species
  • Specific organs (udder, liver, footpad dermatitis, …)

Between now and 2025, +25% days heat stress !

Schema temperature
Figure 2. Time evolution of France mean temperature anomalies in summer relative to the 1976–2005 climatology simulated by the EURO-CORDEX models (historical simulations: grey, RCP4.5: green, RCP8.5: red). Solid lines give the median, shading and dashed lines give the envelope defined by the [25–75%] model range for each scenario. Time series are smoothed with a polynomial regression. (Reproduced from Ouzeau et al., 2016).

READ MOREEconomic losses due to heat stress