When planning a farm or ranch, it’s important to understand the factors that impact animal mortality. So, what is animal mortality, why is it important and how can I calculate it? If you have any of these questions, you can find the answer in this post!

What is animal mortality?

Animal mortality is the number of animals that die. The animal mortality rate is the percentage of animals that die, and it’s one way to measure a population’s health. (In other words, the lower your animal mortality rate, the better off your population is.) Animals that die before reaching their natural life expectancy are not included in this calculation; only those who would have reached old age have their deaths accounted for when calculating mortality rates.

All living things face some level of risk throughout their lives—even humans! However, if you’re looking at a population from an environmental perspective (as opposed to considering individual health), then you need to look at how many individuals are dying on average per year rather than just focusing on individual cases where someone dies prematurely due to some rare circumstance such as heart disease or cancer.

What impacts animal mortality?

To determine the mortality rate of your herd, you’ll need to account for a number of factors. These include:

  • Pregnancy and lactation rates
  • Infections, diseases, parasites, and other issues that affect animal health
  • Feed quality and quantity (including availability)

The longevity of an animal is determined by its species and what it eats. For example, a carnivore such as a lion will live longer than a herbivore such as an elephant due to their diets. Carnivores have shorter lifespans because they are built to consume meat, which is much more difficult for their bodies to digest than plants. This can cause them to contract diseases that affect the organs like the liver or kidneys. A herbivore’s diet consists mainly of plants and grasses, which are easier for their digestive system to process. They don’t get sick as often as carnivores do because they don’t eat meat products that contain high levels of fat or cholesterol (like heart disease). In addition to diet differences between species, habitat also has an effect on how long animals live.

How can animal mortality be reduced?

The best way to reduce animal mortality is through improved conditions and management. This can be done by:

  • reducing stress levels of animals;
  • improving nutrition, especially during critical periods such as pregnancy, parturition (birth), and lactation;
  • using disease prevention strategies where possible (e.g., vaccinations);
  • treating diseases early, often resulting in better treatment outcomes; and
  • controlling the spread of infectious pathogens using sanitary measures (e.g., quarantine)

How to use the animal mortality rate calculator

There are two statistics you can calculate in our calculator: the mortality rate and the disease mortality rate.

The mortality rate refers to the complete stock of animals. Essentially, it compares the number of animals you had at the beginning and at the end. It also takes into account how many animals you should have, as well as the number of newborns. The formula our calculator uses to calculate the mortality rate is:

\text {Mortality rate} = \frac {\text {Closing stock}} {\text {Opening stock} + \text {Number of newborns}}

The disease mortality rate is calculated by dividing the number of deaths that happened as a result of a certain disease by the number of animals that had the disease. Mathematically:

\text {Disease mortality rate} = \frac {\text {Number of deaths}}{\text {Number of infected animals}}


What is animal mortality?

Animal mortality is the number of animals that die.

What affects animal mortality?

The main factors are the living conditions, the quality and quantity of food they eat, and the diseases they encounter.

What animal has the shortest lifespan?

Female mayflies live about 5 minutes, while male mayflies live up to 2 days.