Milking longer with maize silage
This season's dry conditions have made one thing clear: not having enough feed on hand can bring your season to an early close.
That’s the message from nutrition experts who are concerned for the wellbeing of our teenage girls.
Researchers from Fonterra and Massey University are urging parents to help their teenage girls build healthy strong bones – to help avoid osteoporosis later in life.
Massey University senior lecturer in nutrition Pamela von Hurst stresses that adolescence and early adulthood is the optimal time for building a strong skeleton.
“For a number of reasons many adolescents, mainly girls tend to lower their dairy intake following puberty. Often they are exploring dietary options, and some are worried about their weight. But the problem with that is that it is at this very stage of life when our bodies start laying down calcium to strengthen bones against osteoporosis,” Dr von Hurst explains.
“What we see following puberty is a cessation in height growth. Girls have reached their maximum height, the skeleton has spent many years growing, and then the body goes into strengthening mode.
“In adolescence a burst of new hormones come into play, namely oestrogen. Oestrogen is a potent bone building hormone. And this first flood of oestrogen is what drives the body’s bone mineralisation process. That’s the laying down of calcium or ‘bone banking’ that strengthens the skeleton. This process continues for the next 5-10 years,” says Dr von Hurst.
“That period is so dynamic. It is the most opportune time to develop strong healthy bones that will hold our girls in good stead for life. The risk of osteoporosis can be reduced, and the best time to do it is before reaching adulthood.” Dr von Hurst says.
Fonterra principal research scientist Linda Schollum agrees and highlights the importance of reaching the recommended 2-3 serves of dairy per day throughout life.
“In childhood and adolescence, we need good nutrition and high calcium foods to achieve maximum bone mass. In adults and the elderly a nutritious diet helps preserve bone mass and strength. It also speeds recovery and reduces risk of fractures,” says Dr Schollum.
“There are so many great ways to serve up dairy too. Smoothies are really popular with teenagers, and they provide good protein as well as calcium. They seem to go hand in hand with exercise, which is also important for developing and maintaining strong bones.”
