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Maize silage offers both dairy and beef farmers an opportunity to increase animal performance from home grown forage. It is well proven that milking cows fed maize silage as part of their total forage intake, have milk yield increases of 8%-10% with similar additional performance in daily live weight gains of fattening cattle. However, to really see these benefits there are a few key steps in managing the crop at harvest that should be followed. Agritech’s Bil Ryan outlines a few tips that will have a positive impact on how your crop of maize performs at feed out.

Harvest Targets

The aim is to harvest your maize crop as close to 30% dry matter and 30% starch content as possible as this gives the best results both in terms of yield and subsequent animal performance. A rough rule of thumb is to have the plant two thirds brown and the cobs fully formed with no soft grains. Once at this stage of maturity it is ready to harvest.

When it comes to harvesting and ensiling the crop, it is best practice not to chop the crop too finely, but to use a corn cracker on the machine to ensure the grain is split open. This is to ensure that at feed out the animal’s digestive system can fully and easily access the starch.

Pit preparation

Due to Ireland’s unpredictable weather it can be difficult to get perfect harvest conditions thus providing an obstacle to getting good pit preservation. A helpful tip is to have the silage pit prepared well in advance of expected harvest date; washed out and protective polythene sheets laid down inside the pit walls to facilitate an excellent seal at the pit edges. The risk of soil contamination should also be minimised by having an adequate concrete apron to work off and keep machinery tyres as soil free as possible.

The pit should be filled in thin layers from front to back and each layer well consolidated to remove all air. A poorly compacted pit will run a high risk of secondary heating once opened for feeding.

Achieving pit stability

I will readily admit that to achieve all these elements is not easy at farm level. That is why most Irish farmers choose to use an additive such as Agritech’s Ensile Bio. Ensile Bio is specifically manufactured to suit typical Irish conditions. It is designed to preserve the crop in the shortest time possible and does so by producing acids which minimise the growth of yeast and moulds that naturally grow on high dry matter starch crops. By producing these acids rapidly it ensures a stable pit face at feed out for up to 10 days. Pit face stability is extremely important as the energy lost at the pit face could not only reduce animal feed intake but also lead to losses of valuable energy from the clamp.

The final step is to use a vaccum sheet as the first sheet and cover by folding in the two side sheets and fitting the final top sheet. Weigh down with tyres to secure the clamp.

 

For any further advice on harvesting maize, contact your local Agritech distributor or find out more about Agritech’s Maize additive Ensile Bio by clicking here.

 

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