Tonifies Qi and nourishes Blood - used as a gentle but substantive food-medicine for chronic weakness, postpartum depletion, pale complexion, and deficiency patterns needing recovery rather than aggressive stimulation.
Nourishes Yin and reduces deficiency heat - classically chosen for low-grade deficiency fever, dry weakness, and wasting states where the patient is too depleted for drying or strongly hot tonics.
Regulates menstruation and supports gynecologic weakness - widely used for irregular menses, excessive or lingering uterine bleeding, and leukorrhea when Liver-Kidney-Blood deficiency underlies the complaint.
Strengthens the sinews and supports recovery from chronic illness - used in broths and medicated food therapy when emaciation, dizziness, tinnitus, and low vitality suggest deep constitutional depletion.
Secondary Actions
Wu Gu Ji is used far more often in medicinal diet, broth, and pill contexts than as a raw decoction item, reflecting its dual identity as both animal food and restorative medicine.
The shorter name Wu Ji is common in formulas such as Wu Ji Bai Feng Wan, but the formal medicinal name of the black-bone fowl is Wu Gu Ji.
Classic Formulas
Wu Ji Bai Feng Wan (乌鸡白凤丸) - iconic gynecologic tonic pill using black-bone silky fowl to nourish Qi and Blood, regulate menstruation, and treat weakness with leukorrhea or uterine bleeding.
Dang Gui Wu Ji Tang (当归乌鸡汤) - medicinal food-style chicken and blood-tonic soup tradition for postpartum or chronic deficiency recovery, illustrating the bird's role in restorative diet therapy.
Classical References
TCM Wiki and modern Chinese dietetic references classify Wu Gu Ji as sweet and neutral, entering the Liver, Kidney, and Lung channels and nourishing Yin, replenishing Qi, and tonifying Blood.
Its best-known classical application is in gynecologic and postpartum weakness, especially where menstrual irregularity, uterine bleeding, or leukorrhea coexist with constitutional deficiency.
Animal-medicine texts consistently treat black-bone silky fowl as milder and more nourishing than ordinary chicken, making it suitable for longer convalescent use.
Modern Research
Active Compounds
Melanin and melanin-associated pigments (pigments) - distinctive black-bone components widely studied as signature bioactives of silky fowl
Carnosine and anserine (histidine-containing dipeptides) - antioxidant and muscle-protective compounds enriched in black-bone silky fowl tissues
Bioactive oligopeptides (peptides) - studied for antioxidant and immunomodulatory activity after protein hydrolysis
Docosahexaenoic acid and cardiolipin-related lipids (lipids) - among the notable characteristic metabolites identified in comparative metabolomic studies
Iron, zinc, and trace minerals (minerals) - contribute to the species' reputation as a restorative food for blood and weakness
Studied Effects
Characteristic-metabolite research identified estradiol, docosahexaenoic acid, and cardiolipin among signature bioactive molecules in silkie chicken, supporting its long-standing reputation as a restorative functional food (PMID 38540959)
Comparative metabolomics found black-boned chicken possesses distinctive nutritional and bioactive features when compared with standard broilers, including differences in amino acids, lipids, and pigment-related compounds (PMID 36295816)
Protein hydrolysate research showed oligopeptides from black-bone silky fowl have in vitro immunomodulatory and antioxidant effects, offering a modern correlate for convalescent tonic use (PMID 36206545)
Melanocyte-focused work suggests black-bone chicken's pigment cell system contributes to immune function, adding a biological dimension to the traditional emphasis on the species' dark constitution (PMID 34695633)