Management Measures of Heat Stress in Laying Hens in Summer
Release time:
Sep 10,2019
In the hot summer, the heat stress of the laying hens is a big test for each laying hens farm, especially in some small and medium-sized farms, poor breeding equipment, temperature and humidity to increase the difficulty of control, the continuous high temperature of the environment will have a great impact on the laying hens, how to make the laying hens safe through the hot summer? Let us first understand the impact of high temperature environment on the laying hens.
Effects of Ambient Temperature and Humidity on Laying Hens in Summer:
18--22℃: Optimal temperature range
13-25 ℃Suitable temperature range
50%-55%: The most suitable humidity range
28℃ : Egg production rate, egg weight decreased, eggshell thinning
35℃ Gasping supine, heat stress and death
42℃ : Exceeds3hours, death increases dramatically
Because laying hens do not have sweat glands, once the ambient temperature exceeds27-28 ℃The first manifestation of the laying hen is an accelerated breathing rate.;The second manifestation is the opening of wings to increase the heat dissipation area. The third manifestation is the decrease in feed intake. The fourth manifestation is diarrhea due to excessive drinking water, serious drinking water, serious overfeeding and insufficient nutrition absorption. The fifth manifestation is that the egg production rate decreases. The sixth manifestation is that the eggshell color becomes lighter, the egg weight decreases, the eggshell becomes thinner and the breakage rate increases. The seventh manifestation is that feed is sprinkled with water, which is prone to rancidity and mold. The eighth, enteritis, intestinal poison often occur, parasites and intestinal red stool frequently occur; the ninth such as heat stroke, the death of the egg comb, chicken body white, severe paw cyanosis, liver rupture and bleeding.
How much does high temperature affect the production performance of laying hens?
*: feed intake decreased by 10-20%
*: Egg weight reduction 1.5-2.0g/piece
*: The eggshell thickness decreases and the breakage rate increases by 3-5%.
*: Egg production rate decreased by 10-20%
*: Weight loss, decreased physical fitness, sporadic deaths
*: prone to infectious diseases
*: Easy to heat stroke mass death
What should farmers do? That is, heatstroke prevention measures, comprehensive consideration is as follows, farmers can choose some of the methods according to their own chicken coop conditions:
1,Install suitable fans, ceiling fans, fans
2、Matching water curtain
3,Regular drinking of VCWaiting for heat-relieving drugs
4、The use of an Chi Wei Sheng Kang, so that anti-diarrhea, anti-mold, adjust the intestinal flora, improve immunity
5、Open at night 1.Hours of light, to ensure 16 hours of all-day light, increase the feed intake of laying hens
6、Add 0.4 to feed -0.5%of fats and the right amount of vitamins
7,Correctly install the drinking nipple to avoid sprinkling water in the feed.
8、Farmers can also use greening to plant trees, ventilation in the bottom hole, and sprinkling water on the roof of the laying hen house to cool down the temperature.
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