Mineral Supplementation in Livestock Production: Unlocking Full Potential

Livestock breeders and policy makers focus on genetics and nutrition as critical components of animal productivity, yet mineral supplementation is a frequently overlooked yet vital element in cattle diets. Minerals play a crucial role in influencing growth, reproduction, immunity, and milk or meat yield. Effective livestock policies and investments must address the full spectrum of livestock needs, including feeding practices, animal health, environmental sustainability, and economic value.

A region in Uganda has seen significant advancements in mineral supplementation among cattle-keeping communities, where indigenous breeds like Ankole and local Zebu are prevalent. In these regions, cattle are typically kept in kraals or left to graze freely, often relying on natural pastures with occasional crop residues as supplementary feed. Understandably, pastoralists have limited control over the quality and quantity of available feed.

Mineral deficiencies are linked to various health problems in cattle, including poor growth, bone deformities, and fertility issues. To address this, researchers and experts have promoted mineral supplementation practices across many cattle-keeping regions, including in the US and Uganda. Mineral supplementation involves meeting animal physiological requirements, and delivery methods such as free-choice mineral mixes and mineral tubs are common. However, there are challenges with mineral cuisines palatability due to cattle inability to discern between mineral requirements.

Notably, pastoral systems dominate in various regions of Uganda, with approximately 90% of the national cattle herd being raised under pastoral and mixed smallholder farming systems. In these systems, cattle are frequently moved in search of pasture and water, limiting pastoralists' control over feed quantity and quality.

Key Takeaways:

• Mineral supplementation is vital for cattle productivity, influencing growth, reproduction, immunity, and milk or meat yield.
• Essential minerals such as phosphorus, calcium, magnesium, potassium, and sulphur are crucial for skeleton development, animal strength, and milk production.
• Cattle need micro minerals such as cooper, cobalt, iron, iodine, manganese, selenium, and zinc for immune function and reproduction.
• Mineral content in pasture and harvested forage is variable based on forage species, plant maturity, soil type, and fertility.
• Individual animal requirements fluctuate depending on the current development stage and reproductive status.
• Mineral supplementation is used to meet the animal's physiological requirements.
• Delivery methods for minerals differ from farm to farm, with common practices including free-choice mineral mixes, mineral tubs, and buffet mineral feeding.
• Pastoralists in Uganda, who dominate the country's cattle keeping, have limited access to animal health services.
• Challenges faced by pastoralists include limited control over available feed and frequent cattle diseases like contagious bovine pleura pneumonia and Brucellosis.
• Mineral supplementation practices are promoted by organizations such as Makerere University, and trained farmers in Uganda's Karamoja Sub region use soil to formulate mineral supplements.
• Locally trained expert Moses Lote has been training farmers in making mineral blocks for livestock, involving a process of collecting and roasting soil from anthills, mixing with crushed animal bones, ash, salt, and water.

Statistics:

• Approximately 90% of Uganda's national cattle herd is raised under pastoral and mixed smallholder farming systems.
• The pastoral system is predominant in regions such as the North Eastern and South Western sub-regions of Uganda.
• Cattle in Uganda's pastoral systems have average carcase weights of 110-120 kilogrammes at slaughter.
• Milk and meat are the main sources of livelihood for pastoralists, with milk self-consumed or sold and live animals sold in livestock markets or to traders for slaughter.
• Indigenous breeds such as Ankole and local Zebu dominate cattle keeping in regions where pastoral systems are prevalent.

Sources:

• Kim Kester, regional livestock extension educator for Lafayette, Green Grant and Iowa counties in Wisconsin, US ( Farm Progress)
• Food and Agriculture Organisation (FAO), analysing Uganda's livestock production systems through to 2050
• Uganda Investment Authority, 2016 report on Uganda's livestock production systems
• Moses Lote, locally trained expert, training farmers on how to make mineral blocks for livestock.