Effect of two different sources of zinc supplementation on productive performance of friesian dairy cows
By: Shaqwir, Ibrahim Muhammad al-Sayyid Muhammad; al-Maqs, Ahmad Abd al-Aziz Mursi; al-Nahhas, Hasan Mahmud. Egyptian Journal of Animal Production. Vol. 47, no. 1 (Jan. 2010), pp.11-22, 12 p.
Subjects: Dairy products; Exocrine glands; Cows; Milk; Productivity