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By Rita Okoye
Nigeria’s poultry industry, a huge source of jobs, nutrition, and household income, continues to battle infectious disease outbreaks that can wipe out months of progress in a week, with Infectious Bursal Disease (IBD) ranking just behind Newcastle disease as a leading cause of mortality in commercial broilers and a persistent decline in productivity despite routine vaccination; against this backdrop, Dr. Latifat A. Adekunle’s research, published in Veterinary and Animal Science, offers a clear, practical approach that producers, feed mills, and policymakers can pull right now: targeted micronutrient supplementation that measurably strengthens immunity, reduces oxidative stress, and improves growth performance.
Building on her earlier work comparing management systems and micronutrient status, Adekunle designed a controlled trial with 180 day-old chicks divided into six groups spanning supplemented and unsupplemented diets and vaccinated and control cohorts, and then followed how organic selenium (1 mg/kg) and zinc (60 mg/kg) affected bioavailability, antioxidant defenses, weight gain, and immune status after IBD vaccination; the outcome was consistent and commercially meaningful, as birds receiving organic selenium and zinc showed a marked rise in serum trace-mineral levels, evidence that these nutrients were not only ingested but absorbed by tissues, paired with a significant reduction in oxidative stress and a robust increase in key cellular antioxidants, notably glutathione peroxidase and catalase, by day 27 post-vaccination. Because oxidative stress undermines leukocyte function and diminish vaccine take, this shift in redox balance is not an academic detail but the mechanism that turns micronutrients into fewer sick days and steadier growth curves, and Adekunle’s supplemented cohorts translated biology into performance with superior weight gain, an outcome that translate directly into better feed conversion, faster market readiness, and real profit for the farmers.
The immune protection dimension is equally vital: IBD targets the bursa of Fabricius, crippling the very system broilers rely on to defend against the bacterial opportunists that follow any viral insult; by lifting antioxidant capacity and stabilizing cellular defenses, selenium and zinc create conditions in which vaccines can do their job and birds can resist secondary infections, which in turn reduces dependence on antibiotics and the costs and risks that come with them. Adekunle frames this as a co-equal pillar with vaccination rather than a replacement: vaccines and biosecurity remain non-negotiable, but they work better when micronutrients are adequately supplemented in feed, especially in Nigeria’s real-world constraints, where cold-chain breaks, storage lapses, and uneven farm hygiene can affect vaccine efficacy. Economically, the stakes are huge: with an industry value estimated above US$250 million and roughly 140 million chickens across commercial, semi-commercial, and rural settings, even marginal improvements in survival and growth rates cascade into national food security gains and household resilience, particularly for smallholders whose daily cash flow depends on consistent throughput;.
Adekunle’s findings show how a relatively low-cost, feed-based intervention can buffer those households against shocks. Practically, the path forward is straightforward: encourage mills to include bioavailable (organic) selenium and appropriate zinc sources at evidence-based levels and to label inclusion rates transparently; train farm staff and local vets to watch for early signs of stress, including post-vaccine stress to intervene with premix adjustments rather than waiting for mortality to spike; and keep tightening biosecurity so nutritional gains are not squandered at the gate. The study’s ethics approval by the University of Ibadan Animal Care and Use Research Ethics Committee underscores methodological rigor and reproducibility, strengthening the case for scale-up across production systems. Just as importantly, the work travels: the biology of selenium and zinc in antioxidant and immune pathways is universal, making this a template for regions beyond Nigeria contending with IBD pressure, heat stress, and variable vaccine performance. In summary, Adekunle’s research translates bench-level insight into barn-ready action: by pairing vaccination and biosecurity with a disciplined micronutrient strategy built on organic selenium and zinc, broiler production can cut oxidative stress, boost immune response, grow birds faster, spend less on antibiotics, and absorb the inevitable bumps of field reality, offering hope, evidence, and a workable playbook for Nigerian farmers determined to keep flocks healthy and businesses viable in the face of relentless disease challenges.
