The potential benefts of supplementing corn-based dairy diets with Zado or yeast for milk yield and production effciency in dairy cows
H.Gado; B. E. Borhami; A. Z. M. Salem;
Abstract
The objective of this study was to verify the potential benefts of
supplementing corn-based dairy diets (T0, control diet without any
supplementation) with Zado (T1, contains 2.32 U/g Xylanase, 61.5
U/g α-Amylase, 7.05 U/g cellulase and 29.2 U/g protease) or yeast (T2)
for milk yield and production efficiency in dairy cows. Sixty lactating
Holstein dairy cows were randomly assigned to the 3 treatments and
housed in pens (20 cows for each). All cows were fed the control diet
for 4 weeks, followed by 8-weeks period on their assigned diets. The
control diet consisted of 25% corn silage, 25% alfalfa silage, 6% alfalfa
hay, and 44% of a ground corn-based concentrate (DM basis). Zado was
added to concentrates to provide 40 g/head/day for (T1). Active dry yeast
was added to the concentrate to provide 0.5 g Levucell/d per animal
(T2). There was no difference in final BW (600 ± 22 vs. 610 ± 25 and
608 ± 20 kg; P = 0.85) for T0 vs T1 and T2, respectively. Meanwhile,
there were differences for net energy (NE) output (34.1 ± 0.05 vs. 37.5
± 0.07 and 35.3 ± 0.08 Mcal/d; P < 0.05), or efficiency of NE output
(1.61 ± 0.03 vs. 1.42 ± 0.07 and 1.63 ± 0.04 Mcal/kg DMI; P = 0.04)
for cows on T0 vs T1 and T2, respectively. There were differences in
dry matter intake (21.3 ± 0.12 vs. 24.7 ± 0.14 and 21.0 + 0.18 kg/d; P
< 0.07), 3.5% FCM (31.2 ± 0.41 vs. 36.6 ± 0.46 and 31.4 ± 0.38 kg/d;
P < 0.08), and efficiency of fat corrected milk (FCM) production (1.63
± 0.12 vs. 1.44 ± 0.24 and 1.68 ± 0.18 kg FCM/kg DMI; P < 0.06) for
cows fed on T0 vs T1 and T2. In conclusion, cows fed on diet supplemented with Zado increased milk production in comparison to control
or YEAST supplemented diets.
supplementing corn-based dairy diets (T0, control diet without any
supplementation) with Zado (T1, contains 2.32 U/g Xylanase, 61.5
U/g α-Amylase, 7.05 U/g cellulase and 29.2 U/g protease) or yeast (T2)
for milk yield and production efficiency in dairy cows. Sixty lactating
Holstein dairy cows were randomly assigned to the 3 treatments and
housed in pens (20 cows for each). All cows were fed the control diet
for 4 weeks, followed by 8-weeks period on their assigned diets. The
control diet consisted of 25% corn silage, 25% alfalfa silage, 6% alfalfa
hay, and 44% of a ground corn-based concentrate (DM basis). Zado was
added to concentrates to provide 40 g/head/day for (T1). Active dry yeast
was added to the concentrate to provide 0.5 g Levucell/d per animal
(T2). There was no difference in final BW (600 ± 22 vs. 610 ± 25 and
608 ± 20 kg; P = 0.85) for T0 vs T1 and T2, respectively. Meanwhile,
there were differences for net energy (NE) output (34.1 ± 0.05 vs. 37.5
± 0.07 and 35.3 ± 0.08 Mcal/d; P < 0.05), or efficiency of NE output
(1.61 ± 0.03 vs. 1.42 ± 0.07 and 1.63 ± 0.04 Mcal/kg DMI; P = 0.04)
for cows on T0 vs T1 and T2, respectively. There were differences in
dry matter intake (21.3 ± 0.12 vs. 24.7 ± 0.14 and 21.0 + 0.18 kg/d; P
< 0.07), 3.5% FCM (31.2 ± 0.41 vs. 36.6 ± 0.46 and 31.4 ± 0.38 kg/d;
P < 0.08), and efficiency of fat corrected milk (FCM) production (1.63
± 0.12 vs. 1.44 ± 0.24 and 1.68 ± 0.18 kg FCM/kg DMI; P < 0.06) for
cows fed on T0 vs T1 and T2. In conclusion, cows fed on diet supplemented with Zado increased milk production in comparison to control
or YEAST supplemented diets.
Other data
Title | The potential benefts of supplementing corn-based dairy diets with Zado or yeast for milk yield and production effciency in dairy cows | Authors | H.Gado ; B. E. Borhami ; A. Z. M. Salem | Keywords | Milk production;yeast;ZADO | Issue Date | 2012 | Publisher | Annual meeting of ASAS & ADSA 2012 | Journal | Annual meeting of ASAS & ADSA 2012 |
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