A local weed outperformed a costly import
In the sheds where Pakistan's broiler chickens live and die, oxidative stress has long been a silent tax on farmers, birds, and the nation's foreign reserves alike. Researchers at the University of Veterinary and Animal Sciences in Lahore have found an answer growing wild underfoot: Kulfa, a common herb, properly processed, outperforms costly imported antioxidants in restoring bird health. The discovery reframes a weed as a resource, and a dependency as a choice — one that Pakistani poultry farmers may soon be able to make differently.
- Eight out of ten broiler birds on small farms near Lahore are suffering severe oxidative stress, driven by heat, ammonia, and dust trapped inside poorly ventilated sheds.
- Farmers have had no affordable alternative to expensive imported vitamin supplements, draining cash and foreign currency from an already strained agricultural economy.
- University researchers processed the wild herb Kulfa into a standardized powder using pharmaceutical-grade analysis, neutralizing its harmful compounds while preserving its natural antioxidants.
- In a 42-day clinical trial, birds given 5% Kulfa Herbal Meal recovered from cellular damage more completely than those receiving the imported synthetic standard.
- The breakthrough promises lower feed costs, synthetic-residue-free meat, and a new economic value for a plant long dismissed as a weed — but only if farmers source it from certified processors and follow strict dosing protocols.
Pakistan's broiler farms are quietly losing the battle against oxidative stress. Heat, humidity, ammonia, and dust accumulate inside chicken sheds, damaging birds at the cellular level. A PhD researcher surveying ten small farms near Lahore found the problem nearly universal: eight in ten broiler birds were severely affected, leading to stunted growth, reproductive failure, and higher mortality. For years, the only remedy has been imported vitamin mixtures — effective, but expensive, and paid for in foreign currency Pakistan can scarcely spare.
The answer came from a plant most farmers walk past without a second glance. Portulaca oleracea, known locally as Kulfa, grows wild across Pakistan and is rich in natural antioxidants — Vitamins A, C, and E, plus glutathione — confirmed through pharmaceutical-grade laboratory analysis. The challenge was that raw Kulfa contains anti-nutritional compounds that disrupt digestion. Researchers solved this with a straightforward processing sequence: soak overnight, dry thoroughly, grind into powder. The result is what they call Kulfa Herbal Meal.
A controlled 42-day trial tested the supplement against the imported synthetic standard. Birds receiving 5% Kulfa Herbal Meal recovered from oxidative damage more completely than those on the costly import. Lower doses were too weak; higher doses offered no added benefit. The 5% inclusion rate was the clear optimum — and at that level, a local weed outperformed a foreign product.
The implications extend beyond the shed. Replacing imported antioxidants reduces feed costs and eases pressure on foreign exchange reserves. Meat raised without synthetic additives meets growing clean-label consumer demand. And a plant long treated as agricultural waste becomes a crop worth cultivating and processing.
Researchers are careful to draw a firm line, however. Kulfa cannot simply be harvested from a field and added to feed. The processing steps are mandatory, the dosage is precise, and sourcing must come from certified suppliers — either the university's own biotech institute or verified feed mills. When those conditions are honored, Kulfa becomes something new: Pakistan's own, homegrown answer to a problem that has cost the poultry sector dearly for far too long.
Pakistan's broiler farms are losing birds to a problem that lives in the air they breathe. Heat, humidity, ammonia gas, and dust accumulate in the sheds where chickens are raised, triggering oxidative stress at the cellular level. A PhD scholar surveyed ten small farms near Lahore and found the damage widespread: eight out of every ten broiler birds were experiencing severe oxidative stress. The consequences ripple through the flock—stunted growth, delayed maturity, reproductive failure, higher death rates. For years, farm owners have had one option: buy expensive imported vitamin mixtures to counteract the damage. Those supplements work, but they drain cash and depend on foreign currency that Pakistan can ill afford to spend.
A different solution has emerged from an unexpected place. Portulaca oleracea, a wild herb known locally as Kulfa, grows readily across Pakistan. Researchers at the University of Veterinary and Animal Sciences in Lahore analyzed the plant using UV-Vis spectroscopy and HPLC—the same precision instruments used in pharmaceutical labs—and found it packed with natural antioxidants: Vitamins A, C, and E, plus glutathione. The herb contains what the birds need. But raw Kulfa carries anti-nutritional compounds that can interfere with digestion and nutrient absorption. The researchers developed a processing method: soak the herb overnight, dry it thoroughly, grind it into powder. This simple sequence neutralizes the harmful factors and transforms Kulfa into what they call Herbal Meal.
The test came in a controlled 42-day trial. Broiler chicks suffering from oxidative stress were divided into groups. One group received the standard diet plus the imported synthetic antioxidant mixture—the current industry standard. Another received the same base diet supplemented with 5% Kulfa Herbal Meal. A third got 1% Kulfa. A fourth got 7%. The results were unambiguous. The birds on the 5% Kulfa supplement recovered from cellular damage more completely than those on the imported mixture. The 1% dose was too weak to matter. The 7% dose offered no advantage over 5%—more herb did not mean better results. The sweet spot was 5%, and at that level, a local weed outperformed a costly import.
The implications ripple outward in three directions. First, farm economics: replacing imported antioxidants with locally grown Kulfa cuts feed costs and reduces the drain on Pakistan's foreign exchange reserves. Second, food safety: synthetic residues disappear from the meat, creating what the industry calls clean-label poultry—meat raised without synthetic chemical additives. Third, agricultural value: a plant that farmers have long dismissed as a weed becomes a crop worth harvesting and processing. The transformation is not accidental. It is the result of rigorous laboratory work and careful field trials.
But the researchers are explicit about a critical boundary. Farmers cannot simply cut Kulfa from the field and toss it into the feed. Raw herb, improperly processed or dosed, will fail to deliver its benefits and may cause harm. The processing steps—soaking, drying, grinding—are not optional. The 5% inclusion rate is not a suggestion. Farmers must source their Herbal Meal from certified suppliers, either from UVAS IBBT, the university's own biotech institute, or from feed mills that have been trained and verified to process it correctly. When those conditions are met, Kulfa becomes what it was not before: Pakistan's own answer to a problem that has cost the poultry sector millions in lost production and imported costs.
Notable Quotes
When processed correctly, Kulfa is not merely a weed but Pakistan's own natural solution for combating oxidative stress in poultry— Sultan Mahmood and Dr. Rahat Naseer, Lahore
The Hearth Conversation Another angle on the story
Why does oxidative stress hit broiler farms so hard? It seems like a chemistry problem, but you're talking about dead birds.
It is both. The sheds trap heat and ammonia. The birds' bodies burn hotter trying to cope. Their cells generate reactive oxygen molecules faster than they can neutralize them. That cellular damage cascades—weak immune systems, poor feed conversion, organs that don't develop properly. In a flock of ten thousand, you lose hundreds.
And the farms have been buying imported vitamins to fix it. Why didn't anyone look at what grows here?
Kulfa grows everywhere—it's considered a weed. But no one had tested it rigorously. The researchers did the chemistry first, proved the antioxidants were there, then proved in live birds that it actually worked better than what farmers were already paying for.
The 5% number seems precise. Why not just use more?
They tested 1%, 5%, and 7%. The 1% was too little. The 7% gave no extra benefit. At 5%, the herb did its job completely. More is not better—it's waste.
But you said farmers can't just grab the plant and feed it raw.
Correct. Raw Kulfa has compounds that block nutrient absorption. You have to soak it, dry it, grind it. Those steps take time and equipment. That's why farmers need to buy it from someone who has done the work correctly.
So the real win is not just cheaper feed. It's that Pakistan stops sending money abroad for something it can grow and process itself.
Exactly. And the meat is cleaner—no synthetic residues. The farm economics improve. The foreign exchange stays home. It's a complete shift, but only if the processing is done right.