Abstract
Continuously feeding 1333 p.p.m. ascorbic acid to S.C.W.L. chicks resulted in delayed onset of egg production compared to controls. Ascorbate fed hens had increased (P < 0.05) percent liver lipids and decreased (P < 0.05) percent thigh muscle (semitendinosus) lipids compared to controls. Supplementing ascorbate fed hens with 1.0% sulfate decreased (P < 0.05) percent liver lipids relative to hens fed ascorbate. Sulfate ingestion by either ascorbate hens or controls reduced thigh cholesterol concentrations. While liver cholesterol levels were highest in ascorbate fed birds, their adipose tissue contained the least concentration. Control hens fed sulfate had the lowest liver cholesterol content and the highest adipose concentration of the different treatments. There is possibly a problem in liver lipid mobilization or tissue lipid uptake when ascorbic acid is ingested. Sulfate feeding to control and ascorbate hens resulted in reduced muscle cholesterol compared to controls. Eggs were collected from individual ascorbate fed hens before and after 1.0% sulfate was included in their diet. Sulfate ingestion increased the total egg cholesterol significantly (P < 0.05). Ascorbic acid may have sulfated the cholesterol, which enhanced its mobilization from tissues such as muscle and promoted its excretion into the egg. Plasma cholesterol levels were not influenced by treatments.
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