4 Funny shells

NZ Lifestyle Block - - Your Poultry -

Var­i­ous out­side fac­tors can af­fect shell qual­ity. Diet, dis­ease, stress, and even the amount of Vi­ta­min D in the diet – plus that made by the bird when ex­posed to sun­light – have an ef­fect. There can also be prob­lems with the shell gland (which se­cretes the hard outer cov­er­ing) caus­ing var­i­ous dis­crep­an­cies to oc­cur.

Wrin­kles, flat-sides, sand­pa­per-like rough­ness, cal­ci­fied pim­ples, body checks and seem­ingly mended cracks are all fairly com­mon. Thin shells which crum­ple eas­ily or no shell at all, are also com­mon.

If a hen is roughly han­dled, stressed, caught or chased when the egg is be­ing formed, you may see wrin­kles, crum­ples and cracks which have so­lid­i­fied. But if you see th­ese types of fault reg­u­larly from the same hen, it can be ei­ther ge­netic or she may have a de­fec­tive shell gland. if you con­stantly find funny-look­ing eggs, it may be a ge­netic is­sue for a hen.

cal­cium pim­ples are more com­mon on the eggs of older hens as their re­pro­duc­tive sys­tem isn’t as ef­fi­cient. It can also be a sign of ex­cess cal­cium in the diet. Ex­tra cal­cium should be of­fered in a sep­a­rate dish any other feed – don’t force it on the hen by mix­ing it into her main feed.

Newspapers in English

Newspapers from New Zealand

© PressReader. All rights reserved.