Serological Monitoring for Egg Layers: An Effective Way to Determine Effectiveness of Past Vaccinations

If you buy egg layers as day old chicks, it will take about 4-5 months before they start laying eggs. During this period when they are unproductive, they’ll just be consuming feed without putting some money in your pocket or eggs on your table. The only gain you might get is from the sales of feed bags or manure. From day old to 5 months time, one layer can consume about 9.3kg of feed. So you can estimate feed cost from that. There are other costs such as vaccination, transportation, electricity, drugs etc. The fact is that you’ll be spending money.

Now what if after you’ve spent so much money and those young birds finally start laying eggs and they suddenly start getting sick? You may have some pullets (young egg layers) that are doing great, but once they start laying you notice that diseases started coming up and mortality
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