fbpx
Print this page
Friday, 01 December 2017 11:55

Does goat milk help the lactose-intolerant?

Written by 

Goat milk may help lactose intolerance.

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;

2) 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 four casein proteins: a1-, a2-, ß- and k-casein. Low levels of A1-casein cause the proteins, lactose, minerals and water in milk to be secreted by the apocrine pathway.

In New Zealand goat milk A1-casein makes up only 5-10% of the total protein. Similarly, around 5% of the total protein of human is A1-casein.

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, about 25% of the total protein is A1-casein. Therefore, proteins, lactose and water in cow milk are only secreted by the merocrine pathway.

Studies show that goat milk reduces intestinal permeability and intestinal inflammation. Other studies show that oligosaccharides extracted from goat milk reduce symptoms of colitis and support the growth of Bifidobacteria isolated from breast fed infants.

To date, these outcomes have only been seen in laboratory studies and need to be investigated clinically. However, there is a closer similarity in fecal microbiota between goat formula and breast fed infants than breast milk and cow formula.

Lactose is the name of a specific carbohydrate or sugar of milk. Unlike proteins and fats, lactose in all milks is chemically and biologically identical. Goat milk contains lactose just like cow milk. There is no difference so it is unlikely that the lactose in goat milk will help directly with lactose intolerance.

However, other factors may play a role in this. For example goat milk contains oligosaccharides similar in structure to human milk oligosaccharides. Oligosaccharide concentrations in goat milk from NZ are about 10 times higher than cow milk. These oligosaccharides may influence how lactose is metabolised.

• Information for article sourced from NZ Dairy Goat Cooperative (DGC)

More like this

Cashing in on goat fibre

Last month's inaugural New Zealand Cashmere Conference saw the opening of a new fibre processing facility.

A2 goat milk launched

After working on the concept for six years, one of the country’s largest goat farms has launched its own brand of fresh milk.

Good shelter key to production

Shelter is one of the first considerations when contemplating the purchase of a doe, according to the New Zealand Dairy Goat Breeders Association.

Featured

Sheep drench resistance costly

Analysis by Dunedin-based Techion New Zealand shows the cost of undetected drench resistance in sheep has exploded to an estimated $98 million a year.

Dairy sheep and goat turmoil

Dairy sheep and goat farmers are being told to reduce milk supply as processors face a slump in global demand for their products.

Hurry up and slow down!

OPINION: We have good friends from way back who had lived in one of our major cities for many years.

National

Govt urged to reduce ETS units

The Climate Change Commission wants the new Government to reduce NZ Emissions Trading Scheme (ETS) auction volumes as son as…

Dairy sheep, goat woes mount

Dairy sheep and goat farmers are being told to reduce milk supply as processors face a slump in global demand…

Machinery & Products

All-terrain fert spreading mode

Effluent specialists the Samson Group have developed a new double unloading system to help optimise uphill and downhill organic fertiliser…

Can-Am showcases range

Based on industry data collected by the Motor Industry Association, Can-Am is the number one side-by-side manufacturer in New Zealand.