Crop Milk - Comparison To Mammalian Milk

Comparison To Mammalian Milk

Crop milk bears little resemblance to mammalian milk, being a semi-solid substance somewhat like pale yellow cottage cheese. It is extremely high in protein and fat and contains more of it than cow or human milk. It has also been shown to contain anti-oxidants and immune-enhancing factors. Like mammalian milk, crop milk contains IgA antibodies. It also contains some bacteria. Unlike mammals, where the milk is an emulsion, pigeon crop milk consists of a suspension of protein rich and fat rich cells that proliferate and detach from the lining of the crop. In pigeons and flamingoes, both male and female adult produce crop milk and share in the feeding and care of the young. In penguins only the males lactate. Lactation in birds is also controlled by prolactin, the same hormone in mammals.

Read more about this topic:  Crop Milk

Famous quotes containing the words milk, comparison and/or mammalian:

    The LORD brought us out of Egypt with a mighty hand and an outstretched arm, with a terrifying display of power, and with signs and wonders; and he brought us into this place and gave us this land, a land flowing with milk and honey.
    Bible: Hebrew, Deuteronomy 26:8.

    In everyone’s youthful dreams, philosophy is still vaguely but inseparably, and with singular truth, associated with the East, nor do after years discover its local habitation in the Western world. In comparison with the philosophers of the East, we may say that modern Europe has yet given birth to none.
    Henry David Thoreau (1817–1862)

    Specialization is a feature of every complex organization, be it social or natural, a school system, garden, book, or mammalian body.
    Catharine R. Stimpson (b. 1936)