This summary was prepared by Hamed Kioumarsi, EBM at Springer Nature, in collaboration with Reza Naseri Harsini and Ali Maddahian of the Animal Science Research Department at the Gilan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Rasht, Iran.
Citation: Kioumarsi, H., Naseri Harsini, R., & Maddahian, A. (2026). Using Local Feed Resources and Agricultural By-Products in Sustainable Goat Feeding. Springer Nature Communities. https://go.nature.com/3TQ7sT8
Introduction
Animal husbandry plays an essential role in promoting food security and livelihood through the production of animals, especially in vulnerable environments where other agricultural enterprises may not thrive. Goats are considered the most sustainable livestock species as they are highly adaptable to challenging environments. Nonetheless, feeds account for the highest proportion of expenditures in goat farming, constituting the primary recurring cost. Furthermore, feeds are becoming a scarce resource as they are used in various aspects of agricultural production, and therefore, there is a need for strategies that promote the efficient use of available feed resources. Agricultural commodities of commercial value are consumed both locally and internationally, necessitating the need to develop methods that utilize these products in animal nutrition.
Although they can adapt to a wide variety of food items, goats have limited dietary requirements and should be provided with a sufficient amount of forage and supplemented in their nutrition. Therefore, it is essential to determine the local feed resources and their nutritive content and potential hazards to design an appropriate diet. It is equally vital to ensure that these resources are collected and stored correctly since feedstuff’s nutritional and energetic content frequently decreases due to environmental conditions. This chapter discusses the use of local feed resources and agricultural by-products for sustainable goat feeding.
Goats and Local Feed Resources
The use of local plant resources as feed for goats is often underestimated. Compared to other farm animals, goats are more reliant on browses, which has essential implications for feeding strategies. Goats can eat a startling variety of vegetation and hence have dietary flexibility. They may be able to utilize a variety of plant species and agricultural by-products that are not routinely available, edible, or palatable for other livestock species. This is critical to note since a lot of plant matter that is typically inaccessible or undesirable is frequently turned into feed for goats. Furthermore, using local resources minimizes the need for costly commercial feeds. This is critical since the acquisition and distribution of feeds usually take a large portion of farm expenses in commercial goat farming.
Cereals, forage crops, tree foliage and/or browse, and agricultural by-products are examples of local feed resources that can be used for sustainable goat feeding. However, it is crucial to examine the nutritional content of various feed resources and their availability. This is because the nutritional content of a wide range of feeds varies significantly between species and even within related species. Furthermore, the nutritional content of a given feed resource is influenced by several variables, including plant part, maturity, and growing conditions, as well as harvesting, processing, and storage techniques. As a result, knowledge about the nutritional content of local feed resources is essential in the efficient use of these resources for goat feeding.
Utilization of Agricultural By-Products
Agricultural and agro-industrial by-products are considered as potential feed resources that can contribute to the transition towards more sustainable livestock feed production systems. Agricultural by-products such as cereal straw and maize stover, wheat and rice bran, vegetable and fruit residues, oilseed meals and cakes, molasses, and brewery wastes can be used to improve feeding. However, the feeding value of these by-products may differ; nevertheless, all of them can be used to produce animal feed.
While the dietary value of most by-products of plant origin is related to their protein, energy, and fiber contents, these feeds can supply a wide range of other nutrients, including minerals and vitamins. Therefore, the application of agricultural by-products in diet formulation should rely on their nutritional content as well as the animals’ dietary requirements. Some by-products, such as cereal straw, are rich in fiber but deficient in protein and other essential nutrients. As a result, when formulating diets, they should always be combined with appropriate protein supplements to generate a balanced ration. In contrast, oil cake and wheat bran are excellent sources of protein and energy, respectively, and thus can be used to supplement protein-deficient and energy-deficient diets. Additionally, some of these by-products are appropriate for ensiling, and their efficient use necessitates an understanding of their nutritional and physical properties.
Since these by-products are generally made from plants that have already been processed, they offer an excellent opportunity for recycling and reusing agricultural resources that would otherwise be wasted. As a result, they play a vital role in developing more environmentally friendly and circular economies. Therefore, agricultural by-products are critical components in the creation of balanced and sustainable diets for goats.
Diversity of Available Forages
Diversity is essential in the use of alternative feed resources and supplements for goat production. The key principle in the effective use of forages in meeting the nutritional needs of goats is to utilize a mixture of forages. It is important to consider that forages can be grouped based on plant types, such as grasses, legumes, browse plants, crop residues, and agricultural by-products. Each category requires specific nutritional management. For instance, trees and shrubs produce foliage that can provide livestock farmers with a highly nutritious feed. Tree leaves could be harvested as a forage crop. Although tree leaves are not as productive as grasses and legumes, they could meet the fodder requirement of animals besides being produced on a relatively small area of land. Thus, tree leaves are critical to smallholder goat production since they can be produced on a relatively small space.
However, it is crucial to note that not all plants are entirely safe for livestock. Many shrubs and browse species contain antinutritional elements that lower feed intake, impair nutrient absorption, and negatively affect animal health. As a result, it is critical to thoroughly research the nutritional and anti-nutritional content of any given feed resource, as well as the appropriate amount that can be used in the animals’ diets. For instance, Leucaena and Gliricidia are browse plants with excellent nutritional content that can be used for goat feeding, but their usage must rely on a solid grasp of their impact on animal health.
Leaves from mulberry and other browse species are essential feed resources due to their rich nutritional profile. However, some of them are often high in tannins, which bind dietary proteins together, reducing protein digestion’s extent and rate, but at the same time, they promote protein synthesis in the intestines and hinder the development of parasitic worms in the digestive system. Therefore, the forage’s inclusion level should rely on its nutritional content, anti-nutritional and toxic components, and the animal’s physiological condition.
Feed Processing and Preservation
Many agricultural by-products can be processed to achieve the best results when using them as livestock feeds. Some feed processing techniques are vital in enhancing the feed’s nutritional content and palatability, as well as reducing the amount of feed lost during preparation or improper storage. Chopping, drying, soaking, grinding, and crumbling are all examples of feed processing techniques that can help to improve the quality of the feed. For instance, chopping facilitates proper mixing of various feed components and reduces feed wastage during storage, whereas drying is critical in preventing spoilage. In addition, some feeds can be effectively preserved and utilized in livestock production using ensiling techniques.
Feed materials with high moisture content can also be preserved for use during periods of scarcity by appropriate ensiling techniques. Feed preservation and processing are critical steps in the efficient use of feed resources and the development of balanced, nutritious diets for goats. Moreover, more advanced chemical treatments and processing methods can be utilized to improve the nutritional value and digestibility of low-quality feeds. However, these techniques frequently require specialized equipment, and therefore, it might be challenging for smallholder farmers to utilize them due to a lack of expertise and finances.
Furthermore, feed preservation plays a crucial role since the availability of feeds and forages is seasonal. Therefore, farmers must come up with proper methods of preserving feeds so that they can be available throughout the year without losing their nutritive value. It is essential to focus on feed preservation when developing sustainable feeding systems for goats since it plays an integral role in determining the quality and availability of feeds.
Sustainable Feeding Strategies For Goats
While a cheap goats diet is essential in many ways, it is crucial to avoid trying to make it even cheaper by using low-quality feeds. It is essential to remember that animals need a balanced diet to be healthy, productive, and reproductive. Therefore, it is imperative to develop a feeding program that would allow allocating resources in a way that will ensure that the final diet contains all the nutrients in required proportions.
It is critical to evaluate the nutritional content of any given feed resource before selecting it for use in the development of a balanced ration or a diet. This will assist in identifying the most appropriate feed resources that can be combined with other ingredients to create a well-balanced diet that is devoid of nutritional deficits. For example, a diet made up of a single feed resource is likely to fail because that resource is unlikely to have all of the nutrients required for goat production. In contrast, a combination of two or more feed resources with adequate protein, energy, fiber, and mineral content should be adequate to satisfy the animals’ nutritional needs.
Forage resources and agricultural by-products can be combined with commercial feeds to create a balanced diet with reduced overall costs. Farmers should also utilize their extensive knowledge of animal husbandry to choose the most cost-effective feeds and supplements. This is because farmers are well-versed in the nutritional demands of their livestock and so can identify the ideal blends for use on their farms. The feed’s nutritional characteristics such as dry matter, crude protein content, and energy should be considered when developing a balanced diet for goats. Similarly, essential minerals, fiber content, and the presence of anti-nutritional substances in the feedstuff should be considered.
Feed evaluation is critical when it comes to developing a balanced diet for goats. Farmers can get this information by seeking the advice of animal nutritionists, veterinarians, and agricultural specialists. This information will help them understand the nutritional composition of various feed resources and select what to use and in what proportions to achieve a balanced diet for their goats.
Environmental Implications of Using Local Feed Resources
Feed resources are critical components of livestock production systems since they provide the animals with the necessary sustenance throughout their lifespan. As a result, their availability and accessibility are critical aspects of the feeding system that should not be overlooked. Furthermore, local feed resources have several ecological advantages over their commercial counterparts. For example, local resources are frequently more readily available and therefore entail fewer costs in terms of transportation and energy use. Local feeds are also essential in the creation of cost-effective and environmentally friendly production systems because they frequently reduce waste and pollution by reusing materials that would otherwise have been thrown away.
The use of agricultural wastes in animal production plays an essential role by reducing the amount of biomass burnt in the fields, thus minimizing greenhouse gas emissions from burning. Therefore, in situ feed resources are significant for livestock production since they aid in the effective utilization of locally available feed resources.
In addition, proper utilization of feed resources minimizes wastage of feed materials, which is critical for sustainable livestock production. For example, feed materials with high nutritive value can be utilized to provide better nutrition to the animals resulting in improved production efficiency, which subsequently translates to cost-benefit. Therefore, sustainable feeding entails the improvement of the nutritive value of the feed and then maximizing production.
Thus, when selecting feed resources for the development of sustainable feeding strategies, it is critical to take into account their effect on the broader environment as well as the animals’ nutritional demands. It might indeed be a balancing act between achieving sustainability goals and maximizing agricultural production in the short term. However, there is no doubt that using local feed resources is critical to developing a long-term strategy for the continued production of goats.
Sustainability, Costs and Challenges of Locally Available Feed Resources
Although local feeds offer numerous advantages, they also face a slew of challenges that must be addressed before they can be incorporated into the diets of livestock. For example, these feed resources are not always available throughout the year since they rely on seasonality. As a result, the amount and nutritional content of these resources might fluctuate throughout the year, which may have negative consequences for the animals’ wellbeing. Local feeds also require special care to prevent them from being contaminated with dangerous microorganisms or other dangerous toxins before being given to animals. Another challenge is that local feeds and by-products may sometimes contain an excessive amount of moisture, which could lead to a range of health problems if not handled correctly.
A major concern when using local feed resources is the availability of relevant information to farmers about the nutritional content of certain feeds as well as appropriate handling and usage procedures. Therefore, research on the nutritional composition of local feed resources, as well as proper processing techniques, is required to enable farmers to utilize them correctly. Other crucial areas of study would relate to the safe inclusion levels of various feed resources as well as their impact on the agricultural economy and the environment. Studies on their digestibility, effects on animals’ health, and possible interactions with other feed components would also be required. Finally, the development of more accessible processing and preservation technologies would be critical in enabling farmers to adopt these methods and gain maximum productivity from local feeds.
Finally, it is vital to carry out further research in order to fully understand the implications of the various feeding strategies on the environment, as well as their economic importance and viability for commercial goat farming. This will assist farmers in determining how to achieve sustainability while minimizing expenditures as much as feasible.
Concluding Remarks
It is a common misconception that the most effective method of achieving sustainable feeding is through the adoption of expensive technologies and the use of unconventional feed ingredients. In most cases, local feed resources can provide an adequate diet for goats. However, this requires farmers to examine the nutritional content of these resources and have an in-depth understanding of how to employ them in the development of balanced rations.
The potential of local feed resources for sustainable goat farming should not be overlooked, but their use should be based on sound knowledge of animal nutrition. The use of local feed resources in combination with commercial feeds can result in the production of high-quality, nutritious, and cost-effective diets for goats. However, it is vital to recognize that not all feed resources are wholly adequate or completely safe. A thorough knowledge of the potential dangers and nutritional values of these resources is required for safe and efficient use. Additionally, farmers should have a fundamental grasp of how to store and handle them correctly in order to avoid damaging their nutritional content.
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