Tag: Diet formulation

In a 2021 commentary in *The Journal of Nutrition*, experts argued that it is time to reconsider the AIN 93 rodent diet formula. The formula was developed in 1993 and, despite its widespread use, new evidence regarding animal nutrition and potential adverse effects has prompted a reevaluation of this industry standard.

Carbohydrates are the most abundant component of most animal diets, comprising up to 70% or more of the dry matter in many feedstuffs like grains and forages. In essence, what are carbohydrates in feeds is a fundamental question for anyone involved in animal husbandry, as these organic compounds are the primary and most cost-effective source of energy for livestock. Without proper carbohydrate intake, animals can suffer from health issues and reduced productivity.

According to nutritional studies, humans and animals lose up to 10-15% of total food energy through feces and urine. This unabsorbed portion is why the total energy content of food, measured through combustion, is not the same as the energy an organism can actually use, a value known as metabolizable energy.

Over half of the nutrients consumed by ruminant animals can leave the animal unutilized and undigested. A detailed understanding of **what are the different types of feed evaluation** is therefore crucial for formulating effective diets, minimizing waste, and ensuring optimal health and productivity across various livestock and aquatic species.

In animal nutrition, measuring forage quality is essential for optimizing animal health and performance. Two primary metrics used for this purpose are Acid Detergent Fiber (ADF) and Neutral Detergent Fiber (NDF), which measure different components of a plant's cell wall to determine its overall value as feed. Understanding **what is the difference between ADF and NDF** is crucial for accurately formulating diets for livestock.