Emmanuela Ezeakacha

Hello Sayed Mohammad Mortazavi :There are several approaches that should be used. First, body weight management is critical. Birds that enter lay at too light a weight will necessarily have smaller frames, and therefore less calcium reserves. Body weight should be kept on target throughout the rearing phase, rather than trying to get the birds to gain a lot of weight close to the onset of lay - -t ...

Hello gerard huyghebaert :Yes, I agree with this approach, but I think that we need to re-evaluate the absolute levels of Ca and aP that we feed to layers. We recently completed a long-term study (to 74 weeks of age), and found that our negative control diet, with a moderate reduction in ca and aP from the management guide recommendations, actually had greater structural bone reserves at the end o ...