Goat milk secretion

Milk is made up of protein, fat, carbohydrate, water, minerals and vitamins. These components are packaged inside cells within the mammary gland and are released from the cells by two different pathways of secretion.1

  • Merocrine secretion
    proteins, lactose, minerals and water are released without disruption of the cell.
  • Apocrine secretion
    milk fat is enveloped by the cell membrane before being pinched off from the cell. In this process some of the cell components are also released into milk.

Milk proteins consist of whey and casein proteins. There are 4 casein proteins – αs1-, αs2-, β- and κ-casein. Low levels of αs1-casein cause the proteins, lactose, minerals and water in milk to be secreted by the apocrine pathway.2In New Zealand goat milk αs1-casein makes up only 5-10% of the total protein. Similarly, around 5% of the total protein of human is αs1-casein.3

As a result much of the proteins, lactose and water in both goat and human milk are secreted by the apocrine pathway. In cow milk, however, around 25% of the total protein is αs1-casein.4 Therefore, proteins, lactose and water in cow milk are only secreted by the merocrine pathway.

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    1Linzell and Peaker, 1971
    2Wooding, Peaker et al. 1970; Neveu, Riaublanc et al. 2002
    3Martin et al, 1996; Poth et al, 2008
    4Martin et al. 2002; Caroli et al, 2009

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For Families

DGC is of the land, because we are a co-operative of goat farmers who live and breathe by the rhythms of nature. From sun up to sundown, in all kinds of weather, we are caring for our goats – cutting and serving fresh forage for their breakfast, lunch and dinner, milking at day’s break and day’s end, checking the bedding, and generally keeping a watchful eye over the welfare of all, from the littlies to the biggies.

It’s everyday family care. This is appropriate since DGC is itself a family, and we work together with a single focus, on making a better infant formula for the world. Whether it is at 5.30am milking Saturdays and Sundays, or in our labs developing world-class research, or packing our cans safely.

We are proud to be farming a natural food and managing its production all the way to market. And that’s why we feel good about putting our name on it, knowing it is going on to feed and nurture families just like ours.

Co-operation

We are a co-operative, owned by the farmers who supply goat milk. We believe in the enduring value of the co-operative model and our objective is to grow the wealth and security of our farmer shareholders, while at the same time providing consumers with a world-leading premium quality product.

Co-operative is also a word we use to describe our business style, which is built around sustainable and long-term relationships with our partners.

We believe that goat milk is the best base from which to make infant formula. It is not the cheapest, or the most commonly available, but we do believe it is the best.

We take our responsibility seriously to deliver safe and effective nutrition to infants and young children all around the world, and to deliver brands and products that parents trust.

Purpose built manufacturing

The DGC plant is purpose-built solely to be a world class facility for manufacturing goat milk formula. Combined with our cooperative farm model, we are able to control the entire process from milking to distribution. So milk that comes into the plant leaves as a completed product.

The result is a safer, cleaner manufacturing process with no third parties in the production process.

Dairy Goat Co-Operative Trust

The Dairy Goat Co-operative’s 72 shareholders farm in some of New Zealand’s premium farming regions – Northland, Waikato and Taranaki. Their ability to do what they do, is enabled by the strength and resilience of the communities which they support, and which support them.