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Researchers from Kerala Veterinary and Animal Sciences University (KVASU) have published the first complete mitochondrial genome of the Malabari goat in Mammalian Genome.
Key Features of the Malabari Goat
- Habitat - Native to Northern/South Malabari region of Kerala (found across Kannur, Kozhikode, Wayanad, Palakkad, Thrissur, and Malappuram).
- Physical Appearance
- Size- Medium frame; adult females weigh about 30 kg, while males reach around 40 to 41 kg.
- Coat Color -Highly variable, commonly pure white, black, brown, or mixed piebald patterns.
- Horns & Ears - Both sexes feature small, slightly twisted horns that point outward and upward; ears are medium-sized and droop down.
- Hair - Usually short coat, though some individuals carry longer hair or small beards.
- Milk Yield- Produces roughly 0.5 to 1.5 liters of milk per day under typical management.
- Highly valued for both milk and meat production, as well as high prolificacy (frequent twin/triplet births).
- Climate Resilience- Demonstrates exceptional evolutionary adaptation to hot and humid tropical coastal stressors.
Key Findings
- Mitochondrial Haplogroup B1 - Analysis places the Malabari goat in haplogroup B1, a rare maternal lineage present in only ~3% of domestic goats globally.
- Most domestic goat breeds in India predominantly belong to haplogroup A.
- Shared Maritime Ancestry
- Shows strong maternal genetic affinity with Omani goats, Surti goats of Gujarat, and Iraqi Meriz goats.
- Traces ultimate maternal ancestry back to the wild Bezoar goats (Capra aegagrus) of present-day Iran and Iraq.
- Confirms historical accounts that sea merchants transported live animals along the Indian Ocean Spice Route, resulting in genetic admixture between Arabian, Mesopotamian, Surti, and native feral caprine populations.
- Novel Genomic Mutation - The study identified a novel heteroplasmic substitution in the MT-TL2 gene, marking the first reported mitochondrial tRNA mutation in goats.
Significance for Animal Genetics
- Bio-Cultural Evidence- Provides tangible genetic proof of historical trans-oceanic trade networks beyond commodities (spices, textiles) to livestock exchange.
- Conservation - Mitogenome mapping aids in developing targeted selective breeding programs to preserve the breed's unique climatic resilience and disease-resistance traits without diluting its rare genetic heritage.
Reference
The Hindu | Keralam’s Malabari goat’s genetic legacy
