Collagen used to designate a family of at least 28 protein isoforms found in connective tissues, bones, tendons, cartilage, veins, skin, teeth, and muscle. In general, collagen contains 33% glycine, 12% proline, 11% alanine, 10% hydroxyproline, 1% hydroxylysine and minor amounts of other amino acids, being hydroxyproline indicator of collagen content, known to be present only in collagen. Brazil slaughters 40 million birds annually thus generating collagen rich waste that may be used as raw materials in the food industry, cosmetics and pharmaceuticals. The snood is protuberance on the forehead and wattle is the pending skin located below the beak are by-products. This work aims to quantify the total collagen in snood and wattles of slaughtered turkeys aged 109 and 140 days. The total collagen content of the snood and wattle was determined by hydroxyproline content using the factor 8.0. The amount of collagen did not change significantly with ageing as the snood at 109 days showed 12.74% (± 0.54) and at 140 days this content was 11.12% (± 1.73) (p> 0.05). Similarly the wattle at 109 days showed 12.55% (± 0.35) and at 140 days the content was 14.27% (± 1.56) of collagen (p> 0.05). The snood and wattles showed similar levels of collagen. The results demonstrating that both tissues are by-products rich in collagen and can then be used as a raw material for its extraction.