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Lactation: historical patterns and potential for manipulation

D G Blackburn1

  • 1Department of Biology, Life Science Center, Trinity College, Hartford, CT 06106.

Journal of Dairy Science
|October 1, 1993
PubMed
Summary
This summary is machine-generated.

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Biotechnology advances reveal lactation

Area of Science:

  • Evolutionary biology
  • Dairy science
  • Mammalian physiology

Background:

  • Biotechnology has integrated data from undomesticated mammals into dairy science.
  • This integration aids in understanding lactation's modification potential and genetic resources.
  • Evolutionary analysis is crucial for distinguishing adaptive traits from historical artifacts.

Observation:

  • Complex lactation predates mammalian lineage divergence in the Mesozoic Era.
  • Monotreme lactation shows ancestral traits, while marsupials and eutherians display specialized adaptations.
  • Protolacteal glands likely evolved from combined skin gland populations.

Findings:

  • Ancestral gland secretions may have offered antimicrobial protection and nutritional supplementation.

Related Experiment Videos

  • Evolution diversified milk composition, function, output, lactation duration, and mammary gland anatomy.
  • Marsupials exhibit specialized mammary tissue plasticity and functional independence.

    • Implications:

    • Mammalian lactation diversity highlights untapped potential for human nutritional applications.
    • Understanding evolutionary limits and adaptive features informs future bioengineering and dairy science.
    • Current artificial selection in domestic animals has modestly exploited mammary gland potential.