- Apr 26, 2011
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tea and coffee grounds are they harmful for chickens.
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I'm working on an experiment as part of my biology Master's degree that challenges the old adage that chickens need so much light to sustain egg production. Commercial operations usually run on a 15 hour light cycle but those hens are bred for the specific task of laying eggs and they have a very limited life cycle under controlled environments.
My theory is that our backyard flocks produce eggs based on factors other than available light hours. I think that age, health and food sources are more important factors for egg output. I'm still gathering data so I won't speculate just yet, but my control flock has shown an initial decline in production even though the available light has increased. I can show a correlation between lower egg output and a reduction in green vegetables and insect protein for the month of January. This leads me to think that fewer worms and green food are factors in egg output. But like I said, I still need to collect and analyze more data over the next few months.
I'm sure that there will be some who will discount what I'm trying to analyze and claim that light is the mitigating factor in production. We shall see what science says about this experiment.
I've been tracking production of my own flock as the control group for this little experiment. Preliminary analysis suggests that egg production is going down, but the size of eggs is going up. I haven't run the stats yet to see if there is a significance but I think there is a relationship between foraged food and freely available feed.I would love to hear more on your experiment as time progresses. I normally let my layers free range from dawn til dusk, but after some issues with stray dogs, I was forced to keep them in their coop and run for quite a few weeks. I noticed that I went from 30-40 eggs per day to around 12-25, all during the same season. The only change was the lack of "free run". While there was grass and weeds in the run, most of it had been picked over throughout the spring and summer. As soon as I was able to let them free range safely again, within a week they were all back to laying normally. This winter, we never added light to the coop, and they continued to free range. We only went down to 25-38 eggs per day all winter, and I can assume part of that was the lack of available forage, not so much the amount of light.