Campbell effects of p(zno) and p(oa eo) jefo2016

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Study involved 700 piglets weaned at 20 days of age (6.1 kg).

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They were allocated to five treatments at weaning each with 10 replicate pens housing 14 weaners per pen.

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The experiment was conducted under commercial conditions-in excellent R&D facilities

qOverall – to continue to explore alternatives to high levels of ZnO and alternative

means of improving the health and performance of weaner pigs. Eventually to reduce reliance on antibiotics –though not tested here.

qCan the protective and performance enhancing effects of ZnO be achieved at

lower levels of inclusion in commercial situations?

qHow do materials such as ZnO and essential oils and organic acids affect

performance over time after weaning?

q

The treatments

Ø

Control diet without ZnO.

Ø

Control diet with 3000 ppm ZnO

Ø

Control diet with 1.0kg/t microencapsulated ZnO [Jefo P(ZnO)]

Ø

Control diet with 1.0 kg/t microencapsulated OAs and EOs [Jefo P(OA+EO)]

Ø

Control diet with both microencapsulated ZnO and OA+EO

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Duration 28 days

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Antibiotics provided through the water – same for all treatments

ยง Pigs weaned at 21 days (5.78 kg) ยง Ten replicate pens per treatment ยง 14 pigs/pen (700 pigs -total)

Ingredient

Percentage

Wheat

57

Soya Bean Meal (46%)

10

Soycomil

2.2

Blood Meal (90%)

1.4

Meat Meal (51%)

6.7

Fish Meal

2.5

Chocolate Milk Powder

15

NuPro 2000

2.5

Stockfeed blended oil

0.5

Betaine (Betafin)

0.1

DL Methionine

0.16

Lysine HCL

0.30

L-Threonine

0.19

L-Tryptophan

0.05

Nutrient

Level

DE (MJ/kg)

14.8

CP (%)

23.8

Total lysine (%)

1.56

Available Lysine (%)

1.35

Lactose (%)

5.62

M+C:Lysine

0.58

Typ:Lysine

0.20

P(ZnO) + P(OA+EO)

P(OA+EO)

P(ZnO)

ZnO 3000

Control

a

Control

ZnO 3000

P(ZnO)

P(OA+EO)

P(ZnO) + P(OA+EO)

Treatment/week W1

W2

W3

W4

Overall

Control

0.070 c

0.206 c

0.323 c

0.49 a

0.266 c

ZnO 3000

0.093 ab 0.274 a

0.383 a

0.48 a

0.302 a

P(ZnO)

0.100 a

0.343 bc

0.48 a

0.277 bc

P(OA+EO)

0.081 bc 0.226 bc

0.348 b

0.49 a

0.279 bc

P(ZnO) + P(OA+EO)

0.103 a

0.348 b

0.51 a

0.291 ab

0.219 bc

0.237 b

Treatment

Control

ZnO

P(ZnO)

Mortalities

1

0

0

Removals

3

3

1

Total

4

3

1

P=

0.41

Control

ZnO 3000

P(ZnO)

P(OA+EO)

P(ZnO) + P(OA+EO)

P(ZnO) + P(OA+EO) P(OA+EO) P(ZnO) ZnO 3000 Control

P(ZnO)

P(OA+EO)

P(ZnO) + P(OA+EO)

qThe findings support a two phase diet program in first four weeks

after weaning.

qMicroencapsulated ZnO was as effective as 3,000ppm ZnO in first

two weeks – reduced Zn excretion by 66%.

qP(OA+EO) significantly improved feed efficiency (7-8%) in second

two weeks and would seem to have potential for heavier pigs and certainly to the end of the nursery –should be investigated.