Effects of Aging and Dietary Ascorbic Acid on Tissue Ascorbic Acid in the Domestic Hen

Effect of dietary vitamin A, ascorbic acid and their interaction on turkey bone mineralization

“…Since dietary ascorbic acid results in higher plasma ascorbic acid concentrations, this work is in agreement with previous reports (Dorr and Nockels, 1971;Herrick and Nockels, 1969). The significant linear logdose response to graded levels of ascorbic acid is similar to that noted by Giroud e^ (1938) for man and guinea pigs.…”

“…(1949) and Simmonds (1965) reported whole blood ascorbic acid values for various breeds of chickens and con cluded that breed differences might occur at any one sampling time, but the ranking of breeds would differ at various ages. Dorr and Nockels (1971) reported that plasma ascorbic acid of nonsupplemented pullets tended to increase until 19 weeks of age and then a 55% decrease was noted by 32…”

Beneficial effects of dietary ascorbic acid supplement on hens subjected to ochratoxin A toxicosis under normal and high ambient temperatures

“…In contrast, other investigations did not achieve any tesponse in production or egg parameters to long-term dietary supplements of AA at 1200 or 3300 ppm at normal temperafure (Dorr and Nockels 1971) or dietary supplements of sodium ascorbate aI 22-1000 ppm under hot summer weather Heywang et al 1964 …”

Suplementação de vitamina C associada à densidade de criação no desempenho de frangos de corte

“…Rações contendo 2.600 ou 3.300 p.p.m. de ácido ascórbico resultaram em níveis de 28,1 e 33,4 mg ácido ascórbico/ml de plasma, respectivamente (HERRICK & NOCKELS, 1969;DORR & NOCKELS, 1971). PARDUE (1983), utilizando frangos de corte, não observou aumento significativo no crescimento de pintos machos que receberam 250, 500 ou 1.000 p.p.m.…”