in vivo vaccination has widely bee accepted as an effective means of obtaining early
immunity in day-old chicks.particulary in the us the majority of professional larg scale hatcheries
have adopted this technology .outside the us in vivo is also finding its way into smaller sized
hatcheries .basic requirements in the hatchery are essential to let this technology be effective
however.
Betaine is an important ingridient in broiler nutrition . it improves production performance
replaces other methyl group donors such as methionine - assist birds under heat stress
conditions and improves slaughter characetristics tha major source so far has been betaine
anhydrate extracted from sugar beet.however a proper cristalline betaine hydrochloride has
proven to also work well.this is available all year long and production capacity is independent
.to sugar beet production - its cost efective
بهتر است به جای آنکه به فکر افزودن روزهای زندگی به عمرمان باشیم زندگی را به روزهای عمرمان بیفزاییم.