Navigation Links
UK's organic cows are cream of the crop
Date:5/27/2008

A new study by Newcastle University proves that organic farmers who let their cows graze as nature intended are producing better quality milk.

The Nafferton Ecological Farming Group study found that grazing cows on organic farms in the UK produce milk which contains significantly higher beneficial fatty acids, antioxidants and vitamins than their conventional high input counterparts.

During the summer months, one of the beneficial fats in particular conjugated linoleic acid, or CLA9 was found to be 60% higher.

The results of this study into UK dairy production are published online in the Journal of Science of Food and Agriculture.

We have known for some time that what cows are fed has a big influence on milk quality, explained Gillian Butler, livestock project manager for the Nafferton Ecological Farming Group at Newcastle University, who led the study. What is different about this research is it clearly shows that on organic farms, letting cows graze naturally, using forage-based diet, is the most important reason for the differences in the composition between organic and conventional milk.

Weve shown that significant seasonal differences exist, with nutritionally desirable fatty acids and antioxidants being highest during the summer, when the cows are eating fresh grass and clover.

As a result, our future research is focusing on how to improve the nutritional composition of milk during the winter, when cows are kept indoors and fed mainly on conserved forage.

The study, which involved Newcastle scientists working with the Danish Institute for Agricultural Science, is part of the ongoing cross-European Quality Low Input Food project into animal health and welfare, milk quality and working towards minimising the use of antibiotics in dairy production.

This paper is a major milestone in the project and clearly shows that if you manage livestock naturally then its a win-win situation for both us and them, said Professor Carlo Leifert, project co-ordinator.

The scientists also discovered interesting results from a group of low-input farms in Wales, which are not certified organic but use very similar production methods to organic farms (the main difference was the use of some mineral fertiliser and shorter withdrawal periods after antibiotic use).

To reduce costs, these farmers calved all their cows in spring and grazed them throughout lactation, from March until November, resulting in milk being produced on an almost 100% fresh grass diet.

Milk from these non-organic farms also had significantly higher levels of nutritionally desirable fatty acids and antioxidants, which was a direct result of the extensive outdoor rearing and fresh forage intake.

These New-Zealand type dairy systems are not common in the UK, as weather conditions in many areas of the country make it unworkable, explained Mrs Butler. Therefore, milk from these farms is not available to the public as its mixed in with milk from conventional systems during processing.

However, including these extremely extensive systems allowed us to clearly link the difference in milk quality to the dairy cows diets.

Gordon Tweddle, of Acorn Dairy in County Durham, is a local supplier of organic milk. We have believed for some time that organic milk is better for us and our customers tell us it tastes better, he said. It is satisfying to have the scientific explanation as to why it is also nutritionally better.

This current research confirms previous studies in the UK, which reported higher concentrations of omega 3 fatty acids in milk from organic production systems than conventional ones.

CLA, omega-3 fatty acids, vitamin E and carotenoids have all been linked to a reduced risk of cardiovascular disease and cancer. CLA is hugely popular in the US, where it is marketed as a nutritional supplement. However, synthetic supplements often contain compounds with a different chemical composition (isomer balance) than those occurring naturally in milk, resulting in an equal dose of both good (i.e. CLA9, omega-3 fatty acid, vitamin E and carotenoids) and less desirable fatty acids (i.e. omega-6 fatty acids and CLA10).

Switching to organic milk provides an alternative, natural way to increase our intake of nutritionally desirable fatty acids, vitamins and antioxidants without increasing our intake of less desirable fatty acids and synthetic forms of vitamin E, said Mrs Butler. In organic milk, the omega-3 levels increase but the omega-6 does not, which helps to improve the crucial ratio between the two.

The study involved 25 farms across the UK in two contrasting areas of the UK South Wales and the North East. The scientists looked at three different farming systems: conventional high input, organically certified, and non-organic sustainable (low-input).


'/>"/>

Contact: Sarah Cossom
press.office@ncl.ac.uk
01-912-226-067
Newcastle University
Source:Eurekalert

Related medicine news :

1. All-Natural Organic Yerba Mate and Organic Aloe Vera Exfoliating Soaps will Help Save Your Skin(TM)
2. BeeCeuticals Organics Introduces First Dual Certified Body Care Product and Eco-Friendly Packaging Made from Corn
3. The Organic Trade Association Hails Preliminary Research Findings Showing Nutritional Benefits of Organic Products
4. Natures Baby Organics Announces Ah-Choo! Chest Rub
5. it Girl Public Relations Adds O.N.I. New Organic Food Delivery Service to Its Lifestyle Division
6. Nations Largest Retailers Accused of Organic Fraud
7. The Ultimate Valentines Day Gift: Indulgent Organic Chocolate for Women That Combines Great Taste & Functional Ingredients
8. Marteks lifesDHA(TM) Featured in Three New Offerings of Baby Food from Plum Organics
9. Novel organic metal hybrids that will revolutionize materials science and chemical engineering
10. New understanding of how big molecules bind will lead to better drugs, synthetic organic materials
11. Horizon Organic(R) Family Farmer Network Grows by Nearly 35 Percent
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/29/2017)... Baltimore, MD (PRWEB) , ... April 29, 2017 , ... ... noisy jobs, so what are Americans doing in their leisure time that causes hearing ... assess lifestyle habits that may be contributing to hearing loss, as well as schedule ...
(Date:4/28/2017)... (PRWEB) , ... April 28, 2017 , ... ... its new partnership with the Home Care Association of America (HCAOA). This agreement ... Private Duty Accreditation services, as well as discounts on Accreditation University (AU) educational ...
(Date:4/28/2017)... ... April 28, 2017 , ... Horizon Blue Cross Blue Shield ... credit rating of “A” and its outlook as “stable.” At the same time, the ... have fallen in recent years, dip below “capital adequacy” thresholds required for its strong ...
(Date:4/28/2017)... ... April 28, 2017 , ... ... tubes . These lamps offer an instant energy-saving solution for F32T8 fluorescent lamps ... fixtures or disconnect ballasts. These 50,000 hour rated lamps utilize the existing electronic ...
(Date:4/28/2017)... Texas (PRWEB) , ... April 28, 2017 , ... The ... plaque in recently to the labor and delivery team at Women’s Hospital at Renaissance ... mothers who give birth at the hospital and decide to donate. , “Women’s ...
Breaking Medicine News(10 mins):
(Date:4/19/2017)... 19, 2017 Global Prostate Cancer Therapeutics ... the prostate cancer therapeutics market analyzes the current ... prevalence of prostate cancer, launch of promising emerging ... of new drugs & therapeutic biological products, and ... to lesser side effects are some of the ...
(Date:4/19/2017)... The Global Effective Microorganisms (EM) Market by Manufacturers, ... and analysed the potential of Global Effective Microorganisms (EM) Market ... growth factors. The report identifies and analyses the emerging trends ... market. ... and Figures, 6 Major Company Profiles, spread across 124 pages ...
(Date:4/19/2017)... Companion animal vaccines ... pets such as canine, avian and feline. ... such as Attenuated Live Vaccines, Conjugate Vaccines, Inactivated ... Recombinant Vaccines. Attenuated live vaccines are derived from ... have been weakend under laboratory conditions. Conjugate vaccines ...
Breaking Medicine Technology: