Feed accounts for about 50% - 60% of the cost of running a dairy farm. Silage is in most cases the only commodity that is within farmers own control. And the quality of the silage is impacted by a few key decision points during harvest and subsequent storage preparation.
Let’s visit with a few of the key important ones – Critical Control Points (CCP)
CCP 1: Safety firstSafety should always be at the top of the agenda. No business considerations should prevail safety precautions during silage making.
CCP 2: Decision-makingSubsequent it is important to establish the decision-making process: Who is empowered to decide when to start, alter or stop the silage making in a timely manner?
Roughage is typically grown on own land. Although closer to the producer’s immediate influence, the scale in modern dairy farming and the equipment involved in harvesting often calls for external help: The contract choppers. Interestingly, in most markets, 60-70% of all forage is chopped by contractors and the trend is increasing. This puts a lot of responsibility at the hands of these contractors – but does not remove the responsibility – or the concern – of the producer.
CCP 3: Maturity and dry matter contentTo make the most of the field potential, striking the balance between yield (quantity) and digestibility (quality) is pivotal. Picking the optimal time to harvest is important but difficult to practice if all should be “ideal”. At a balance between tonnage and digestibility, maize has an optimal DM content of 34% with a narrow acceptable range of 32-36% and a realistic range from 30-38%. Despite you aim for feed quality rather than quantity, the impact of size most often will not allow you to harvest all crops at the ideal stage.
CCP 4: Theoretical Length of Cut (TLOC)Cut length is optimal around 2-2.5 cm – this is measured at the spout as what comes out here is what enters the bunker – not what the settings on the machine might show. So ensure you frequently check this and communicate with the crew if settings need to be adjusted – remember you will feed this throughout the entire season!
CCP 5: Kernel ProcessingMaize is mostly a starch feed source – and if the starch is to be available to the rumen fermentation it has to be accessible – typically described as kernel processing or crushing. Again, this is checked at the spout – ideally you should accept very few if any un-cracked kernels as they indicate energy passing through the cows undigested. If in doubt check the muck today (or watch the birds. If you have whole maize kernels in the muck, ask for better attention with your chopper team during the upcoming harvest - and make sure to track it through the entire harvest, as there is little you can do afterwards during feed out. Reduction of un-cracked kernels easily translates into increasing milk yield.
CCP 6: Packing“Oxygen is the enemy”. You may have heard this ever so often – but remember that spoilage organisms like yeast and molds are aerobes and will proliferate as long as oxygen is present in the bunker. This is the reason you should pay attention to the packing of your crop, during the silage making process. The “rule of 400” tells you if you have the right balance between filling rate and packing capacity: Weight of tractor = 400 x tons of forage delivered per hour. Reflecting again that the capacity of harvest equipment is increasing, the delivery rate could easily exceed the packing capacity. Is your packing tractor big enough? If packing is not done properly you stand to lose good nutrients and also risk spoilage due to the presence of residual air inside the bunker. In fact – the most skilled person on the farm should be taking care of packing, as this part of the process has a very large impact on the stability and resulting quality of your silage. If possible consider doubling the packing capacity – with proper compaction (say moving from 250 to 285 kg/m3) you could increase the bunker storage capacity by almost 15%.
CCP 7: SealingThis is the critical part to ensure anaerobic conditions can be established (and sustained). Use of oxygen barrier films in addition to ordinary plastic has proven effective on reducing top layer spoilage. Combining this technology with a top layer applied solution based on biological/chemical additives is an “insurance” that has a dramatic effect on waste reduction (especially reducing the top spoilage layer). Add weight to the plastic – if the plastic can move up and down, it indicates that air can be pulled into the silo. All in all – what you do during the days of harvest will influence both work load and performance throughout the entire year.
What about silage inoculants?
Well certainly we endorse the use of bacterial inoculants. However, if you do not have a proper control of all listed management CCPs you make risk not getting the full benefits of adding a strong fermentation and preservation control – these products will neither perform miracles nor will they save “a bad season”. But add them when silage management is top-notch – and you will clearly harvest the benefits in the shape of reduced shrink, better preservation of nutrients and better stability during feed out. Our newest generation of silage inoculants combines the positive impact on the fermentation parameters with the enhancement of aerobic stability when you use a silage inoculant which contains Lactobacillus buchneri.
Key benefits of SiloSolve® FC (containing a unique combination of Lactobacillus buchneri LB 1819 and Lactococcus lactis LL O224):
- Rapidly establishes an anaerobic environment
- Reduces dry matter shrink and spoilage organisms
- Preserves nutrients
- Keeps cold during feed out
- Allows accessing the silage after just 7 days of fermentation
One of the greatest advantages of using a silage inoculant like SiloSolve® FC is that it reduces the uncertainty of silage-making. At the end of the day you will want to take as much control as you can over your dairy production. SiloSolve® FC could be an important part of your toolbox.