Historical background of salt and its use in animal feeding for enhancing production performance have been traced back to several centuries before Christ in different parts of the world. Mined rock salt, solar evaporated salt, and other processed and refined salt have been used as a salt source to meet animal needs of Na and Cl or to balance dietary electrolyte or cation-anion difference for optimizing acid-base balance and other functions that are central to homeostatic regulation mechanisms employed by the animal body. Present day, the global demand for salt for animal feeding is estimated to be more than 90 million metric tons per year. Salt is also an important carrier or carrier component in animal feeding for enhancing handling and formulation and feed preparation process. Beyond animal health and nutrition, salt has marked effects on the microbial ecosystem in the ruminant.
Animal feed salt, also known as mineral salt or livestock salt, is a vital supplement in animal nutrition. It primarily consists of sodium chloride (NaCl) but may also include other minerals essential for animal health. Livestock, including cattle, sheep, and poultry, require salt for various physiological functions, including maintaining fluid balance, aiding in digestion, and supporting nerve and muscle function. Sodium is also vital for animal husbandry feed, ensuring livestock receive the minerals they need for optimal health.
Efforts to develop an animal health and nutrition product innovation have recently seen successful introduction of animal salt licking blocks targeted to ruminants with nutritional, health, and productivity and palatability enhancing properties. These animal salt lick blocks are an important change to presenting salt to the animals in loose form which has low palatability. Concentrating ingredients necessary for targeted healing or nutrition supply together with salt as the carrier increases the face value of the product. Presentation and product form also changes animal response to access the nutrient mix in the block. The science and practice of generating such a complex and nutritionally valuable product formulation are the focus of this chapter and start with a detailed review of the use of salt in animal feeding. This has to be presented before reviewed approaches to produce salt licking blocks, properties and safety of salt, health and nutrition relationships as well as salt licks product development from the perspective of efficacy and palatability enhancement. Using precursors and their delivery, evaluation of such salt block for animals is then reviewed. Subsequently, process technology in the production of innovative medicinal and nutritional herbal composite salt licking blocks with specific bioactive compounds is presented and finally by summarizing and concluding the text.
Salt provided the sodium and chlorine nutrition of rangeland animals and its contribution to the taste of the grass enhanced the appetite of the animals. Sodium is an extracellular electrolyte and plays a critical role in acid-base balance, osmotic pressure regulation, nerve conduction, and muscle activity. Sodium deficiency causes decreased feed intake, growth retardation, parakeratosis, muscle weakness, kidney damage, and poor reproductive performance in animals. The need for support from organic acids in pre-ruminants, chicken, and other poultry for salt decreases. Sodium can satisfy excessive excretion through urine and sweat if there is no requirement at all.
How Much Salt Do Animals Need?
Determining the right amount of salt can feel tricky. Just like us, different animals have varying needs. For instance, a cow may require more salt compared to a chicken. Generally, a good rule of thumb is to provide access to salt at all times, allowing animals to consume it as needed. This is kind of like having a snack bar available—an animal can munch on salt when they feel like they need it.
Over-supplying can also lead to issues like salt poisoning, so moderation is key. Monitoring your animals helps ensure they’re getting the right amount.
Benefits of Salt for Different Animals
Different species benefit from salt in unique ways. For instance, livestock like cows and sheep require salt for digestion and nutrient absorption. This is critical for their growth and milk production. Chickens, on the other hand, need salt for proper egg production and to maintain energy levels. Even pets benefit from salt, though in much smaller amounts. It supports hydration and can help with overall health.
Signs of Salt Deficiency in Animals
Recognizing signs of salt deficiency is crucial for maintaining animal health. Animals might display various symptoms when they lack this essential nutrient. Some common signs include:
- Lethargy: If your animals seem unusually tired or less active, it might be a warning sign.
- Decreased Appetite: Animals that refuse food might be lacking salt, causing their energy levels to plummet.
- Increased Water Intake: Animals may drink more water than usual if they’re trying to compensate for a lack of salt.
- Muscle Cramps or Weakness: A lack of sodium can lead to muscle issues, making it hard for them to move around comfortably.
Salt Is a Key Ingredient for Animal Health
Salt plays a vital role in animal feeding, impacting their growth, energy levels, and overall health. By understanding the types of salt available and the specific needs of your animals, you can ensure they are getting the nutrients they require.
Why do animals need salt?
Animals need salt primarily for sodium and chloride, which are essential for various physiological functions.
Salt helps maintain electrolyte balance in cells and tissues, regulating fluid levels and osmotic pressure. This balance is crucial for the proper functioning of cells. Then sodium is vital for nerve function. It aids in transmitting nerve impulses, which is essential for coordination and reflexes. Salt also plays a key role in muscle function. Sodium helps generate the electrical signals that trigger muscle contractions, enabling movement. Moreover, salt stimulates the production of saliva and digestive juices, promoting effective digestion and nutrient absorption. Besides, sodium assists in absorbing nutrients in the intestines, including glucose and amino acids, which are important for energy and growth.