Enzymes are proteins that assist chemical reactions in the body. Although livestock's gut microflora produce some enzymes, they do not all the enzymes in sufficient quantities to hydrolyze NSP, proteins or phytates to enable absorption of all nutrients. Enzyme supplementation improves the quality of feedstuffs and livestock, resulting in higher profit margins. Enzyme addition helps to produce more meat per animal at a much lower cost while improving the overall long-term health of the herd. Vet costs and mortality rates also decline with the use of enzyme supplements in animal feed. Enzymes come from a variety of natural sources, including plant extracts, animals, and microorganisms. Enzymes are widely used by the agricultural, brewing, biofuel, dairy, and rubber industries to boost production and minimize costs.

The cost of providing animal feed to livestock and poultry accounts for 60-70 percent of the total outlay of running a livestock or poultry business. Reducing this expense has been the goal for generations of farmers. Use of enzymes in animal feed make this goal a reality, and modern farmers have achieved phenomenal gains in the efficient and economical production of livestock. The use of enzymes in farm animal nutrition has been an important part of achieving this success while maximizing the health of the animals and minimizing the impact on the environment.

Market pressures and a growing interest in sustainability are driving interest in the use of alternative (local) raw materials in swine diets. Alternatives, especially processed raw materials and co-products, tend to be higher in phytate, fibre and indigestible protein, than the parent grain or oil-seed. This reduces feed efficiency. Therefore, the use of enzymes in swine diets containing alternative raw materials can also deliver benefits for sustainability, as losses are minimized and reduced.

In the day and age where every industry's successes is heavily dependent on cost efficiency, it is a factor that drives most businesses. That is why businesses and companies in the aquaculture industry is so obsessed with feed enzymes such as alkaline protease because of the critical role it can play to increase overall production efficiency.

The main functions of protease used in aquaculture include accelerating digestion and breeding efficiency, removing unwanted waste particles, and improving feed quality and overall health.

In the growing industry of aquaculture, many enzymes such as protease are being used to promote digestion and nutrient absorption, enhance resistance to disease, and reduce production costs as well as environmental pollution.

The digestion of dietary protein is an important driving force for animal nutrition, as protein and amino acids are one of the most expensive nutrients. This is why different kinds of proteases are so widely used in the animal feed industry today.

Neutral protease, as an efficient enzyme preparation, has a wide range of applications across several industries such as the feed industry, leather and textile industry, beer making and baking industry, as well as soy protein isolate production, and HAP/HVP production.

Acidic Protease, as an important class of enzymes, plays an indispensable role in both biological organisms and industrial production. the wide range of applications and potential value of Acidic Protease in the food industry, feed industry, medical field, and environmental protection will be elaborated below.

Acidic Protease, as an important class of enzymes, plays an indispensable role in both biological organisms and industrial production. This paper aims to delve into the basic characteristics, mechanism of action, application fields, and future development trends of Acidic Protease, providing valuable references for researchers and practitioners in related fields.