Studies on the Vitamin Requirements of Poultry

Yoshida, Minoru; Hoshii, Hiroshi; Morimoto, Hiroshi

doi:10.3382/ps.0450736

Cited by 6 publications

(1 citation statement)

References 7 publications

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“…The niacin requirement of broiler chickens has been reported on the basis of results derived from experiments conducted when chickens were either between 1 to 7 or 1 to 8 wk of age (Childs et al, 1952;West et al, 1952;Yen et al, 1977) or between 0 to 3 or 0 to 4 wk of age (Patterson et al, 1956;Yoshida et al, 1966). Sunde (1955) reported the niacin requirement of chickens from 6 to 11 wk of age.…”

Section: Introductionmentioning

confidence: 99%

Research Note: The Lack of Response of Broiler Chickens to Supplemental Niacin When Fed a Corn-Soybean Meal Diet from 3 to 7 Weeks of Age

Ruiz

Harms

1990

Poultry Science

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An experiment involving 1296 Cobb feather-sexed broiler chickens was conducted to determine their need for supplemental niacin from 3 to 7 wk of age when fed a corn-soybean meal diet. Birds were raised in litter floor pens to 3 wk of age and fed a diet that met or exceeded the 1984 National Research Council nutritional requirements. From 3 to 7 wk of age, birds were assigned to six dietary treatments consisting of 0, 3, 6, 12, 24, and 36 mg of supplemental niacin/kg of feed. Twelve replicate pens (six per sex) were fed each dietary treatment. The corn-soybean meal basal diet (unsupplemented with niacin) contained by analysis 21.3% crude protein, 23% tryptophan, and 22 mg of niacin/kg of feed. Birds were weighed at 3 and 7 wk of age on a per pen basis. The body weight gain, total feed intake, and feed conversion were determined for male and female chickens between 3 and 7 wk of age. There were no significant differences in body weight gain (P = .67), feed intake (P = .36), and feed conversion (P = .12) due to dietary treatments. Treatment by sex interaction was not significant for body-weight gain (P = .53), feed intake (P = .76), and feed conversion (P = .53). It was concluded that a corn-soybean meal diet containing 22 mg of niacin/kg (from corn and soybean meal) and .23% tryptophan was adequate for optimum growth and feed conversion of broiler chickens from 3 to 7 wk.

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