Folic Acid: Sources, Chemistry, Absorption, Metabolism, Beneficial Effects on Poultry Performance and Health

Table 1

NRC recommended levels of folic acid in different poultry diets.

Type of poultry	Age	Folic acid requirement (mg/kg)
White leghorn	0–6 Weeks	0.55
	6–12 Weeks	0.25
	12–18 Weeks	0.25
	18 Weeks to the first egg	0.25
Brown leghorn	0–6 Weeks	0.52
	6–12 Weeks	0.23
	12–18 Weeks	0.23
	18 Weeks to the first egg	0.23
Broiler strain	0–28 Days	0.30
New Hampshire	0.33–1.45 Days	0–35
Rhode Island red	1–21 Days	≤0.3
White Plymouth	1–28 Days	≤0.3
Arbor Acres	1–20 Days	0.3–0.45
Bronze	0–6 Days	0.8
Females bronze	32–48 Days	0.7
Jersey buff	0–3 Days	2.0
Females large white	32–48 Days	1.23
Turkeys males/females	0–4 Weeks	1.0
	4–8 Weeks	1.0
	8–12/8–11 Weeks	0.8
	12–16/11–14 Weeks	0.8
	16–20/14–17 Weeks	0.7
	20–24/17–20 Weeks	0.7