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Cross ventilation brings fresh air into the barn and reduces heat stress

The ruminant digestion of cattle produces a great deal of heat. Furthermore, additional periods of prolonged heat occur every summer and affect many of the dairy cow’s performance parameters.

The first signs of increased respiratory rate, decrease in feed intake and shorter lying periods can be seen in high-performance animals as soon as temperatures reach 18⁰C.

A respiratory rate of more than 70 breaths[/minute] indicates on its own that the animals are struggling with the heat.

Improving natural ventilation
The natural ventilation provided by a free flow of air on the eave sides is enhanced by side walls that can be completely opened, but there is often no cross-ventilation during high summer temperatures when air remains still.

Fan cooling
Abbi-Aerotech BV has been marketing cross ventilation systems since 2010.

The use of fans installed in exterior walls brings fresh outside air into the barn and actively cools the animals. Air movement around the animals helps them to dissipate heat, thus reducing the temperature they feel. The cooling effect is achieved by maintaining an air speed of at least 2 m/s. Air is blown along lying cows in the length dimension of cubicles, thus ensuring optimum cooling.

Abbifan 140-XXP-2 fans are automatically tilted forward at an angle of 15 to 18⁰ so that the necessary air speed is delivered to the area where the animals are.

Since the lower edge of the fan is positioned 2.70 m above lying surfaces, protective grills are not required by liability legislation. Cleaning and maintenance is significantly simplified, and air capacity is not restricted.

In addition, the air quality in the barn is much improved, and there are fewer problems with flies!

Important to consider power consumption
In addition to the initial cost, actual power consumption, achievable air speed and noise levels should be taken into account when selecting a fan.

Air capacity is not as important as the air speed at various distances. On average, the fans operate about 2,500 hours per year, at either full or partial load. The maximum power consumption of the Abbifan 140-XXP-2 fans, which have direct drives and EC motors, is

530 W/h when operating at top speed, resulting in annual savings of about € 450 per fan compared to existing models. An extra benefit of direct drive is that there are no maintenance costs.

Water cooling
There are two options available for cooling by evaporation, both of which function according to the same physical principle. Cooling is produced by controlled evaporation of water.

This can take place directly on the cow’s back at the feed fence using cow showers (“soaking”) or through high-pressure misting systems spraying fine mist into the air at 70 bar. Misting is reducing the air temperature, while soaking reduces a little the body temperature.

If soaking is used, nozzles are mounted in a tube along the feed fence. The nozzles produce large drops and are automatically controlled by an on/off program. The limiting factor for both systems is the prevailing humidity in the barn!

Cross-ventilation makes the installation of a high-pressure misting system easier and significantly more cost-effective. Spray nozzles need not be mounted on the fan.

In any event, ventilation should be automatically controlled. Cows will be exposed to heat stress situations with increasing frequency in coming years. For this reason, farmers need to take appropriate measures to reduce heat stress in order to produce milk from healthy and high-performing cows.

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Israel announces creation of global seed company

Two Israeli seed producers, Nirit Seeds and TomaTech, have joined forces to create Israel’s largest vegetable seed company. This synergy will enable unique seed breeding research and development that will accelerate the company’s growth in the international seed markets.

Upon completion of the merger, the company will have more than 80 employees worldwide, including molecular biologists, breeders, agronomists, and others.
The company will improve its breeding activities in Israel, Spain, Mexico and Italy, as well as significantly expand its representation in the Netherlands and North America, with a particular focus on growing vegetables in high-tech greenhouses.

Nirit Seeds is one of the most successful internationally traded tomato and pepper seed producers, investing in the development of revolutionary genetic technologies. TomaTech is one of the leading tomato seed companies in Israel, developing premium varieties, including those resistant to the dangerous Tomato Brown Ruffle Virus (ToBRFV).

The production of crop seeds is one of the most advanced and high-tech sectors in Israel. According to the Seed Department of the Federation of Israel Chambers of Commerce, seed exports currently generate $200 million in annual revenue. There are about 25 large and medium-sized companies in the local industry.

For reference. According to market research, the global vegetable seed industry is valued at $8 billion a year and is growing at a CAGR of 8%.

Prepared according to

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Karachay-Cherkessia became one of the leaders in the production of greenhouse vegetables at the end of 2021


Greenhouse vegetable production in 2021 reached a record 1.4 million tonnes. According to the Ministry of Agriculture of the Russian Federation, the leaders among the regions in this segment are the Karachay-Cherkess Republic, Lipetsk, Moscow, Kaluga, Volgograd, Novosibirsk, Saratov, Chelyabinsk regions, Krasnodar and Stavropol Territories, the Republics of Bashkortostan and Tatarstan. These regions account for more than 60% of the total production in the country. The intensive development of greenhouse projects in our country helps to provide Russians with fresh vegetables all year round. Last year, the harvest in winter greenhouses updated the 2020 record – more than 1.4 million tons of products were received. Including the production of cucumbers amounted to at least 830 thousand tons, and tomatoes – 590 thousand tons. It is expected that by 2025 the volume of vegetable production in year-round greenhouses will be at least 1.6 million tons of vegetables.


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December: Special Year Overview

In 2022, it will be 22 year since the new millennium started. Can’t believe it? Neither can we, but it is true. Before we go there, it is time to reflect on what has happened this year. Over the next couple of weeks, we will look back at 2021 and we will highlight the most important events that impacted the industry.

New greenhouses, events, even a few shows, technical novelties, and all other relevant news will pass by, offering you something other than Covid to talk about during Christmas and New Years’.


Wish your customers Happy Holidays
This special also offers an opportunity to put your company in the spotlight with a banner in this special box. This banner can be booked until December 24 on our newsletters. For more information, feel free to send an email to: 

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