Limestone, shells, and egg shells are all major sources of calcium. Limestone is a natural calcium carbonate, containing more than 35% calcium, and is cheap. Shells are excellent calcium feeds and are easily absorbed by black bones. It is best if some of them are in pieces. After the eggshell is cleaned, boiled and crushed, it is also a good calcium feed. The above amount of calcium feed, chicks accounted for 1% to 2% of the diet, laying hens accounted for 6% to 7%. Bone meal and calcium phosphate are excellent phosphorus and calcium feeds. Bone meal is a calcium, phosphorus balanced mineral feed, steamed as well. Calcium phosphate or other phosphates are all sources of phosphorus. Phosphorus ore has high fluorine content and must be defluorinated before use. The amount of bone meal and calcium phosphate can account for 1.5%~3.5% in black bone chicken feed. (1) Natural astaxanthin: it is a powerful antioxidant, known as the king of anti-aging. Its ability to scavenge free radicals is 6000 times that of vitamin C; 1000 times that of vitamin E; yes β- 100 times the efficacy of carotene; It is 20 times more effective than selenium; It is 700 times the efficacy of anthocyanins; It is 320 times the efficacy of tea polyphenols; It is 10 times more effective than lycopene; 800 times that of coenzyme Q10;: It is 240 times more effective than grape seed extract; It is 200 times the efficacy of carotol (Lutein); It is 3000 times higher than resveratrol[ 1]
(2) Vitamin C: also known as ascorbic acid, is an acidic polyhydroxy compound containing 6 carbon atoms: lack of vitamin C can greatly reduce endurance exercise ability. Vitamin C supplementation can significantly reduce exercise-induced oxidative stress. The safe dose of vitamin C supplementation is 0.5 ~ 3.0 g / day. The recommended daily dose of vitamin C supplement is 0.5 ~ 2.0 G.
(6) Anthocyanins: anthocyanins belong to biological flavonoids, and the most important physiological active functions of flavonoids are free radical scavenging ability and antioxidant ability. Astaxanthin 10% Powder, Glabridin 99% Powder, Tea Polyphenols Powder Xi'an Tian Guangyuan Biotech Co., Ltd. , https://www.tgybiotech.com
(7) Tea polyphenols: tea polyphenols are all natural antioxidant foods extracted from tea. They have the characteristics of strong antioxidant capacity, non-toxic side effects and no peculiar smell. The antioxidant effect of tea polyphenols can eliminate reactive oxygen species and inhibit the consumption of vitamin C, so it can keep skin delicate and white.