The case centred around the sire of a bull subsequently found to be incorrect by the use of DNA testing.

It shows that scrupulous care has to be taken when inseminating and in embryo transfer.

There's no room for human error, and even a catalogue disclaimer will not hold up.

In this case, deception was not an issue and the breeder's integrity was not questioned.

In reality, it was a simple mistake.

Not common knowledge is the case where semen from an Australian bull was exported to North America. DNA tests of calves showed the natural sire of the bull was incorrect.

What evolved was that not one bull on the Australian breeder's property could be traced by DNA.

The only explanation, apart from a miracle, was that the cow had been served by a neighbour's bull through a fence.

Breed societies leave themselves wide open with the practice of allowing estimating a calf's birth weight. On this are based some estimated breeding values.

In these litigious times, this raises questions. Should all birth weights and subsequent weights be audited, or undertaken with independent supervision? 

It has been rumoured that in some herds where bull calves with very high birth weights are not recorded and the calves are castrated.

Another side factor is that weighing calves at birth is costly and, in some cases, very dangerous.

So, why should those not weighing have an advantage? 

The court decision now means breeders will have to use expensive DNA testing 

A Pandora's box has been opened. 

A recent article from London revealed milkmen are returning to London as millennials order glass milk bottles in a bid to slash plastic waste.

"The catalyst for the surge in millennials using glass bottles is David Attenborough's Blue Planet II, according to one milkman."

We are unlikely to see this happen here, as milk is still delivered house to house in the UK with electric-powered carts.

This provides an easy pathway to return empty bottles for reuse.

Apart from different milks, a wide range of products are also sold from the carts, including fresh bread.

In Australia, it is supermarkets that are the major source for milk sales.

And there would be no logical reason they would want to be involved with recycling.

The advantages of glass bottles are that they can normally be reused 15 times, however some are refilled on up to 50 occasions.

The energy cost to make one bottle is high. But it drops dramatically every time a bottle is reused.

There is high-energy usage to wash and sanitise battles.

Also, there is weight problem with glass when compared to plastic.

And, of course, there is a safety issue.

Maybe we need to get smarter around plastic disposal with even domestic systems that turn plastic in to flakes and then compressed into the size of a brick.

These could then be utilised by industry for a large number of end uses.