The following is an article from Jeff Mattocks from the Fertrell Co.
Until this year, no one had ever asked what they need to do to prepare their laying hens for winter. If you are counting on the hens for winter income, the winterizing process actually begins in the third week of August.
There are several steps involved in properly managing layers for winter profitability:
1-Supplemental lighting
2-Diet change
3-Temperature corrections
Supplementing Light
It is important to maintain a consistent length of daylight in order to maintain consistent rate of lay. Laying hens require 12-16 hours of day length to maintain production, with the optimum length being 14.5 hours. Light supplementation is the first season requirement that should occur in the third week of August, because by then, day length is becoming noticeably shorter and for us in the Northeast is very near 14.5 hours of natural daylight. Light should be added at 15 min increases per week until the 14.5 hours total has been met. This doesn’t mean that the light should be on for 14.5 continuous hours. I use a timer that allows 2 “On times” per 24 hours period. I set the timer to come on at 5 am and go off at 8 am, and also set it for 5 pm till 9 pm. This provides our flock with 16 hours of total light and 7 hours of supplemental light. Meanwhile this same incandescent light provides some temperature correction. The minimum light required is a 40 watt bulb for an area 10ft X 10ft. I personally use a 60 or 75 watt bulb for an area 4ft X 8ft, but this would be on the extreme end of the spectrum, and I would not suggest anything higher. If electricity is not an option, I have been recommending the use of a Coleman gas lantern. The length of burn or light can be controlled by measuring the fuel that is supplied. The typical lantern will burn for 6 hours on approximately 8 oz of fuel. Therefore, the lantern would require 1.33 oz of fuel per hour of burn. You should verify this when you purchase a lantern, as each one is slightly different. The lantern can be used at both ends of the day but appears to work best only in the mornings. Also, when using the lantern in the evenings, it will slowly burn down and out, as would a normal sunset. This allows the layers to get to the roost before the switch goes out and provides a very mellowing environment. A gas lantern would supply approximately the equivalence of a 60 watt incandescent light. Lastly, another important benefit of the lantern is really good supplemental heat.
Diet Changes
The reason for the diet changes during the winter are in response to temperature and instinct. As the 24 hour ambient temperature declines, the hens will start eating more to compensate. They are eating for their energy needs, which is what all forms of poultry will do. During the summer months, typical layers will eat (not including spillage and waste) .25 lb per bird per day. This would be the average for 75 degree 24 hour average temperatures. During the winter months when the temperature average would be 40 degrees, we can expect feed consumption to increase to .33 lb to .40 lb per bird per day. This is solely due to energy requirements to maintain warmth and add fat for insulation, which explains the instinct portion of the reasoning. Nearly all forms of life that experience temperature variances to any extreme will tend to increase body fat for winter self-preservation. Layers are no different. With what little instinct they may have remaining after intense breeding, they will store up fat for winter. The negative side effect of this is an increase in egg size. The egg size was probably already correct during the summer months, and if the size increases it may take you out of the market that you have established. Sales trends show that marketing Jumbo egg or larger is difficult and/or not cost effective. There is not enough additional mark-up to compensate for the increase in management and feed consumption. So, I said all that to stress that during the winter months the layer ration should be changed to increase the energy and slightly decrease the protein content to adjust for temperature and instinct.
Some sample ration examples:
Winter Laying Ration 15.5%
Ingredients: LBS
Alfalfa Meal 100
Limestone 100
Oyster Shell 75
Poultry Nutri-Balancer 60
Shell Corn Grain 1115
Soybeans, Roasted 550
Total 2000
Nutrient Name: Amount
Crude Protein 15.5%
Crude Fat 7.1%
Crude Fiber 4.2%
Calcium 3.87%
Phosphorus 0.73%
Energy 1,284 Kcal/LB
For those of you who are forced to use soybean meal, 48% the following ration would be an example of a winter ration. I feel that soybean meal is a cheap by-product that should only be used due to availability - not cost. Roasted soy will enhance layers’ health, production and egg flavor. Roasted soy also provides protein along with energy values equal to corn.
Winter Laying Ration 15.5%
Ingredients: LBS
Alfalfa Meal 100
Limestone 100
Oil, Soy Bean 75
Oyster Shell 75
Poultry Nutri-Balancer 60
Shell Corn Grain 1165
Soy Bean Meal,48% 425
Total 2000
Nutrient Name: Amount
Crude Protein 15.5%
Crude Fat 3.1%
Crude Fiber 4.4%
Calcium 3.84%
Phosphorus 0.70%
Energy 1,274 Kcal/LB
In these rations, you will notice alfalfa meal. The alfalfa meal is important to help keep the color in the yolk from paling. You will also notice that the protein has been lowered to 15.5% for winter. This is to maintain the egg size by reducing the grams of protein ingested. These changes also increase the energy values to slightly above recommended rates for body warmth.














