Precision livestock farming
Precision livestock farming (PLF) is the use of advanced technologies to optimize the contribution of each animal. Through this "per animal" approach, the farmer aims to deliver better results in livestock farming. Those results can be quantitative, qualitative and/or addressing sustainability.
Precision livestock farming (PLF) is made possible by monitoring each individual animal or by statistical analysis. Although this sounds very much like 21st century technology (which is indeed a key enabler), one could argue that precision farming is anything but new. It is not so long ago that most farmers knew each of the animals by name. Moreover, a farmer could typically point out who the parents were and sum up other important characteristics. Each animal was approached as an individual. Variety existed, but was no issue. In the past three decades, farms have multiplied in scale, with highly automated processes for feeding and other tasks. Not surprisingly, farmers currently work with average values per group. Variety has become an impediment to increasing economies of scale. This is where PLF comes in. Using modern information technology, farmers now can record numerous attributes of each animal, such as pedigree, age, reproduction, growth, health, feed conversion, killing out percentage (carcass weight as percentage of its live weight) and meat quality. When this information is available (and easy to apply – a subject to which we will return later), huge benefits can be derived. Culling, currently typically done on age, can now be done on the basis of reproduction values plus killing out percentage plus meat quality plus health. The result is significantly higher reproduction outcomes, with each newborn also contributing to a higher meat value. In addition to these economic goals, precision livestock farming supports societal goals: food of high quality and general safety, animal farming that is efficient but also sustainable, healthy animals and well being of animals and a low footprint of livestock production to the environment.
The regulatory and societal requirements to livestock farming are of growing complexity. This results in larger organizations and the use of complex machinery and IT systems.
Economic livestock farmingEdit
Due to academic studies, the requirements of an animal are well known for each phase of its life and individual physical demands. These requirements allow the precise preparation of an optimal feed to support the animal. The requirements are oriented on the required nutrition – providing more nutrition than required make no economic sense, but providing less nutrients can be negative to the health of the animal. The goal of precision livestock farming is to provide a mixture or ration that satisfies the animal's requirements at the lowest possible cost.
Quality and safetyEdit
Economic goals are an important factor in livestock farming, but not the only one. Legal bodies (such as the government and industrial bodies) set quality standards that are legally binding to any livestock producing company. In addition, societal standards are followed.
Quality is defined by the following characteristics:
- the quality of used ingredients
- the quality of animal keeping
- the quality of the processes
One example for issues with quality of ingredients is the (nowadays often illegal) use of meat and bone meal for ruminant animals.
Ecological livestock farmingEdit
Selecting the "right" ingredients can have a positive effect on the environment pollution. It has been shown that optimizing the feed this can reduce nitrogen and phosphorus found in the excrements of pigs.
The key to unlock the potential of precision livestock farming is consistently collecting information of each animal. For this, there are several technologies: Unique ID, Electronic wearables to identify illness and other issues, Software, Machine Vision, etc.
Each animal requires a unique number (typically by means of an eartag). This can be utilized through a visual ID, passive electronic ID tag or even an active electronic ID tag. For example, at birth, the farmer selects "Birth" from the menu on the reader, after which the interactive screen requests the user to read the tag of the mother. Next, tags are inserted in the ears of newborns and read. With this simple action, important information is recorded, such as:
- who is the mother
- how many siblings did she deliver
- what is the gender of each sibling
- what is the date of birth
Electronic wearables such as an active ID tag can get data from individual animals such as temperature and activity patterns. This data can be utilized in identification of illness, heat stress, estrous, etc. This enables individualized care for the animals and methods to lower stress upon them. The end result is judicious use of drug treatments and nutrition to bolster healthy growth. This provides livestock producers with the tools to identify sick animals sooner and more accurately. This early detection leads to reduction in costs by lowering re-treatment rate and death loss, and getting animals back to peak performance faster.
Another piece of technology users need is software. By using readers which are wirelessly connected to the internet, data is processed immediately on servers, and the results are instantly available. In the past, people have used plain old readers. Sometimes, users forgot to sync these devices with their PC for many weeks. The result is that the precision farming data becomes outdated, and thus useless. Moreover, connected readers can download important information wherever you are. For example, if you want to check the passport of a certain animal, you simply read the tag and all relevant information is immediately visible on your handheld, over the mobile internet. Due to high computational requirements, precision livestock farming requires computer-supported tools. The following types (available for PCs and via Internet) are available:
- Induction/processing software applications (a necessity for use with electronic active ID tags)
- Automated Livestock Administration software
- Reproduction Optimization software
- Feed formulation software
- Quality management software
Precision Livestock ManagementEdit
Precision livestock management (PLM) is the continuous management of livestock using real-time automated processes to monitor animal reproduction, welfare, production, and environmental impacts.  Benefits to using PLM include automating traditionally labor-intensive processes, providing in depth information that would otherwise be unattainable, using real-time automated processes to monitor reproduction, health and welfare, production, and environmental impact.  There are tools available for all different livestock animals.
A robotic milker can be used for precision management of dairy cattle. The main advantages are time savings, greater production, record of valuable information, and diversion of abnormal milk. There are many brands of robots available including Lely, DeLavel.
An automatic feeder is a tool used to automatically provide feed to cattle. It is composed of a robot (either on a rail system or self-propelled) that will feed the cattle at designated times. The robot mixes the feed ration and will deliver correct amount.
There are many tools available to closely monitor animals in the swine industry. Size is an important factor in swine production.
Automated Weight Detection CamerasEdit
Automated weight detection cameras can be used to calculate the pig's weight without a scale. These cameras make it faster and less stressful to record the weight of your pig.  These cameras can have an accuracy of less than 1.5 kilograms. 
Microphones to Detect Respiration ProblemsEdit
In the swine industry, the presence of respiration problems must be closely monitored. There are multiple pathogens that can cause infection, however enzootic pneumonia is one of the most common respiratory diseases in pigs caused by Mycoplasma hyopneumoniae and other bacteria.  This is an airborne disease that can be easily spread due to the proximity of the pigs in the herd. A common symptom of this is chronic coughing.  Early detection is important in using less antibiotics and minimizing economic loss due to appetite loss of pigs.  A microphone can be used to detect the sound of coughing in the herd and raise an alert to the farmer.
Thermal stress is connected to reduced performance, illness, and mortality.  Depending on geographical location, and the types of animals will require different heating or ventilation systems. Broilers, laying hens, and piglets like to be kept warm. 
In the poultry industry, unfavourable climate conditions increase the chances of behavioural, respiratory, and digestive disorders in the birds.  Thermometers should be used to ensure proper temperatures, and animals should be closely monitored for signs of unsatisfactory climate. 
Precision livestock farming is all about recognizing the individual properties of each animal. That brings huge benefits to a farmer, but the buck doesn't stop there. Abattoirs, for example, can do exactly the same. More and more slaughterhouse deploy Slaughter Registration Systems. Such systems reads each tag at the moment of slaughtering, after which the carcasses are traced through the abattoir. When the ready-to-sell carcass is moved into storage, the tagnumber and other slaughterdata (such as weight, quality, fat and customer) are added to the carcass. The pertinent slaugherdata (carcass weight, quality, fat) are fed back to the farmer, who can use this data to improve his farming.
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