Determiation of optimum calcium and phosphorour levels and effect of supplement of vitamins A,D and E on calcium and phosphorous consumption effectiveness in feed of age-productive chicken
2001
Pham Cong Thieu | Vu Duy Giang
Supplement of 4 percent calcium 0.6 percent phosphorous and 20g vitamins A, D, E/kg feed to egg-productive chicken feed is most effective in rapid growth, high vitality increased egg laying rate and reduced feed. Addition of minerals from oyster shells or egg shells showed similar results, but use oyster shells is less expensive.
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