Monitoring estrus intensity in cattle helps optimise reproduction and can be done efficiently with visual estrus detection aids. (Image source: ESTROTECT)

Although all estrus cycles are not the same for individual females within a herd, it is one of the most important indicators of whether a cow or heifer will be successfully bred

Animal reproduction professor at the University of British Columbia in Canada, Ronaldo Cerri, PhD is carrying out research work to improve cattle fertility by identifying which cows and heifers are the best candidates to breed using tactics like artificial insemination (AI) and embryo transfer (ET), with estrus intensity as the deciding factor.

Cattle have typical baseline activity when they aren’t in estrus. When they start to enter estrus, their activity rises as the intensity of the estrus increases. Pinpointing when estrus is about to peak is crucial to a successful pregnancy. 

After analysing extensive data from estrus detection sensors, Cerri and other researchers have pinpointed patterns based on what’s occurring during estrus. Cows exhibiting low estrus intensity tend to have lower concentrations of progesterone during the growth of the ovulatory follicle and fail to ovulate more often than those with high estrus intensity. Similarly, ET recipients that show high estrus intensity have more consistent pregnancy results.

“The patterns are very consistent in many of the studies we do,” said Cerri. “Cows with lower estrus intensity always display less physical activity, but they also have lower pregnancy rates. On the flip side, cows with high estrus intensity display more activity and have higher pregnancy rates.”

Evaluating estrus intensity

Using heat detection tools to evaluate estrus intensity can help to pick and choose which cows are the best candidates to breed at a particular time. While implementing a mass breeding protocol, offers the option to use estrus intensity to direct choices on what type of genetics to use.

The project aims to make Somalia self-sufficient in broiler production and contribute to the development of the livestock sector. (Image source: TİKA)

Focused on reducing Somalia's reliance on imported chicken meat, the Turkish Cooperation and Coordination Agency (TİKA) recently launched the 'Breeding Broiler Production Project' in the region

The project aims to make Somalia self-sufficient in broiler production and contribute to the development of the livestock sector. Launched in 2020 through a collaboration between TİKA and Zamzam University’s Anatolian Faculty of Agriculture, a poultry house and hatchery facility were constructed within the faculty.

Building on this initiative, a Feed Production Centre was established in 2023 at City University’s Faculty of Agriculture in the capital, Mogadishu. The 'Breeding Broiler Production Project' was implemented as part of the next phase to reduce Somalia’s reliance on imported chicken meat. 

Stages of the project

First, a total of 5,900 mother and father line eggs of Anadolu-T, Türkiye’s domestic broiler breed, are brought from Türkiye and incubated at the faculty’s facility. After being thoroughly inspected by Turkish experts, the hatched chicks are then transferred to breeder poultry houses for further growth and care.

Additionally, a training programme was organised for the students and lecturers of the Faculty of Agriculture, providing a detailed explanation of the stages of chicken production. 

The new FeedMixer App makes feed mixing easier by calculating whether the feed mixtures farmers use contain the right balance of key nutrients, by age, type of chickens, and available ingredients. (Image source: World Poultry Foundation)

In an attempt to make optimal poultry nutrition easier, while also helping farmers save money and improve profits, a free mobile app called the FeedMixer App was designed by poultry nutrition experts at the Poultry Science Department at the University of Georgia in the US

Rising commercial feed costs as well as limited grain supply is urging poultry farmers in Sub Saharan Africa and most regions around the world to self-mix their chicken feed. However, a majority of farmers lack adequate knowledge, causing them to fail at achieveing the right balance of grains, oils and other available ingredients needed to ensure optimal nutrition for different types of birds at different stages.

The new FeedMixer App, a relaunch of an older version of the app, makes feed mixing easier by calculating whether the feed mixtures farmers use contain the right balance of key nutrients, by age, type of chickens, and available ingredients.

Sean Chen, assistant professor/extension specialist at the Department of Poultry Science at the University of Georgia highlighted how farmers are often unaware of the fact that the nutrient needs of chicken may vary depending on the stage of life they are currently in, which is why broilers and layers for example, would need to be fed differently. Selecting the appropriate feed components would therefore be essential for optimising bird health and productivity, while at the same time minimising resource wastage. 

"We feed various types of feed mixes to different breeds of birds because different breeds have distinct characteristics and purposes," said Chen. "For instance, broiler chickens are primarily raised for meat production. These chickens grow rapidly and require a diet supporting muscle development and efficient feed conversion into meat. Broiler chickens need feeds rich in proteins, carbohydrates, and fats to ensure optimal growth and flavourful meat production. On the other hand, laying hens are specifically bred to produce a consistent supply of eggs. They require a different set of nutrients to support their reproductive system and the formation of solid eggshells. Their diet should include adequate proteins, vitamins, minerals, and calcium to support strong eggshell and egg production."

Maureen Stickel, director of the International Programme Development at the World Poultry Foundation also underscored how the app would help guide farmers who might have trouble accessing traditional feed ingredients such as soy or corn due to cost or local availability.

Users simply click on the type of chickens they are feeding, and select the ingredients they have available to them, such as maize, cassava, oil, bran, soybean meal, fish meal, and salt, in the proportions they intend to blend. The app will indicate whether their chosen feed mix delivers adequate energy, protein, fibre, vitamins and minerals to efficiently nourish the birds without wastage. Users can input the cost of the ingredients they use, to calculate whether their feed mix is cost effective, and they can save their own feed mix formulas in the app for future reference.

To make it convenient for users, the app is currently available in a number of languages including English, French, Spanish and Portuguese. It also offers useful content and resources such as preloaded feed mix examples for different types of birds, and diet guidelines for each breed and age of bird.

The report considers current global food systems and their associated problems, focusing on dairy as a sector willing and able to change. (Image source: Regen Dairy Project)

The Regen Dairy Project launched its 'Let’s Get Serious About Making Dairy Regenerative' report at the recently held 2024 Regenerative Agriculture Summit Europe

With little research done on regenerative dairy to date or a clear vision on the transition required by all those in the supply chain and at scale, the Regen Dairy Project is defining a clear roadmap towards a positive food system for people, animals and the planet. The report considers current global food systems and their associated problems, focusing on dairy as a sector willing and able to change.

Having taken a farmer-centric approach to understanding regenerative dairy, the report outlines recommendations for transition and suggested actions for all those involved - including often overlooked stakeholders such as banks and lenders, media and wider society.

“We believe regenerative dairying can play a significant role in tackling important environmental challenges, as well as combating critical issues facing humanity, like human health, environmental degradation, animal welfare, and water use," said CEO of FAI Farms, Øistein Thorsen. "And all while producing the nutritious food needed to feed a growing global population and helping farmers stay profitable.”

He also concluded by saying that rather than telling farmers what to do, the report focused more about achieving change in a food system, which is often considered complex since it requires input and action from everyone. "We are all responsible for educating ourselves on what regenerative agriculture is and the benefits it provides, and for many this could include a shift in mindset. We are excited to see what can be achieved,” Thorsen said.