the effects of zinc oxide (zno) and e. coli-derived 6-phytase supplemented-diet on the reproductive performance in aged broiler breeder hens and on immune responses of their progeny chicks were studied. in a 2×4 factorial arrangement, 2 inclusion levels (0 or 300 u kg-1 diet) of e. coli-derived phytase and 4 inclusion levels (30, 60, 90, and 120 mg kg-1 diet) of zno were provided from 62 throug...

Feeding fibre and branched-chain amino acids (BCAA) to sows during late gestation lactation, respectively, have been shown improve litter weights at weaning. Therefore, supplementing primiparous sow diets with lucerne chaff, a feedstuff high in fibre, BCAA tryptophan, may the performance of their progeny. Experiment 1 investigated effects feeding (n = 118) either (i) control diet (CON); (ii) CO...