Completely randomized block design was applied to study the effect of three
different natural additives mixtures NAM (NAM1. NAM2 & NAM3) on goat does
performance. Forty pregnant Balady does with an average live body weight of 38.5
:: 1.5 kg (LBW) and aged 3-4 years were divided into four similar groups. The control
diet (CD) consisted of concentrate feed mixture (CFM) ,berseem hay (BH) and
wheat straw CNS) which was free from feed additives. Tested diets (TO) were
composed of control diet (CD) plus 10 g i head {day NAM1, NAM2 or NAM3, namely
TD1, T02 and T03 diets, respectively. Animals were fed according to NRC (1989)
allowances for goats. Results showed that both NAM1 and NAM2 mixtures (T01 and T02 diets)
significantly (P<0.05) increased digestion coefficients of OM, OM, CP and CF and
nutritive values as TON, ME and oCP over those of CD diet, which had the lowest
values among experimental diets. Also, NFE digestibility was significantly (P<0.05)
increased for additives groups (TO 1 and T02) diets as compared with CD diet. The
NAM2 mixture significantly (P<0.05) raised digestion coefficients of OM, OM, CP
and CF and NFE than those of NAM1 mixture (T01 diet), while nutritive values
insignificantly improved than those of NAM1 mixture (T01 diet). Both average daily
milk yield (AOMY) and fat corrected milk (FCM) of T01 and T02 were significantly
(P<0.05) increased than those of CD group. The highest improvement of the
(AOMy) and (FCM) was recorded with T02 group, while the lowest improvement of
(AoMy) and (FCM) was recorded with T03 group. Meanwhile, there were no
significant differences among tested groups concerning the fat (F), protein (P), total
solids (TS), solids not fat (SNF) and lactose (L) percentages which were almost
similar for all tested diets. Although, values of (F, P, TS, SNF and L) yields / head
{day were clearly significantly (P group. No significant differences were detected among most of blood parameters of
all tested groups. Moreover, the average feed cost / kg FCM decreased by 3.0,
13.24.and 1.5% for T01 ,T02 and T03 diets, respectively., which was reflect on the
improvement of economic return by 24.71, 75.86 and 16.10 % for T01, T02 and
T03 diets, respectively. as compared with the control group. This study,
recommends using NAM2 mixture as feed additive with lactating does ration 0
improve average daily milk yield and economic return. Further studies are needed on
a commercial scale.