Alain Guyonvarch

Introduction With the increase of microbes resistance, the use of antibiotics as growth promoters is decreasing worldwide. As a consequence, there is a need for alternative products able to maintain production performances without antibiotics. In this context, a trial was conducted on laying hens to evaluate the effects of a patented activated clay (B-Safe). Material and methods The perf ...

Introduction and objectiveThe ban or more limited utilization of antibiotics growth promoters in many countries has reduced the tools to control gut microflora. In this context, a synthetic ion exchanged clay under a patented process (B-Safe), was developed and is proposed as an alternative to antibiotics to help in the gut microflora management. In vitro and in vivo trials were con ...

Most of published trials are conducted in experimental farms, under good conditions, and generally give better performance than average field ones. We can then question about the practical use of these results in field conditions. In order to evaluate the influence of the conditions under which a product evaluation is done on the conclusion of the test, a 2x2 factorial study was conducted with bro ...

Red mites are one of the most important pests of laying hen farms worldwide. More than 50% of layer batches encounter difficulties in managing red mite problems. Poultry red mite (PRM), scientific name Dermanyssus gallinae, is a nocturnal blood feeding ectoparasite of birds. PRM is an acarus that requires blood of its host for development and reproduction.It particularly infests laying farms due t ...

ABSTRACT Birth to weaning is a high-risk period for piglets. The present paper reports the efficacy of supplementing the sows diet with Stimune® (specific fatty acids) to increase the survival of piglets by enriching the colostrum and stimulating the immune system of piglets. A trial involving 70 sows and their offspring compared two groups : a control group without marine fatty acids and a gr ...