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Table 6 Behavioral observations of state events (% of total hour of observation) in Muscovy ducks fed live BSF and YM larvae provided at 5% of the expected ADFI

From: Does the provision of live black soldier fly and yellow mealworm larvae improve Muscovy duck welfare?

Behavior category

Behavior

Treatment1 (T)

Period (P)

Week (W)

SEM

P-value

C

BSF

YM

P1

P2

P3

W1–3

W4–6

T

P

W

T

P

W

P × T

W × T

W × P

Activity

Rest

64.8

61.8

63.6

62.0

64.0

64.2

69.4α

57.9β

1.96

1.96

1.60

0.539

0.679

< 0.001

0.016

0.188

0.410

Stand

7.50a

4.20b

5.16b

5.47B

9.19A

3.24C

4.72β

6.33α

0.425

0.450

0.341

< 0.001

< 0.001

0.001

0.046

0.430

0.010

Walk

2.84a

2.04b

2.93a

3.30A

2.51B

2.06B

2.19β

3.03α

0.231

0.233

0.189

0.007

0.001

0.002

0.247

0.510

0.247

Foraging

Eat

3.37b

4.63a

2.90bc

4.12A

3.02B

3.62AB

3.52

3.60

0.322

0.317

0.257

<0.001

0.046

0.839

0.662

0.002

0.021

Drink

2.89b

4.47a

2.54b

3.79A

2.59B

3.34A

3.47

2.95

0.255

0.250

0.202

< 0.001

0.002

0.066

0.881

0.012

0.033

Eat insects

-

3.00

3.36

-

3.18

-

4.27α

2.37β

0.372

0.263

0.388

0.493

-

< 0.001

-

0.092

0.493

Peck object

2.32

2.68

2.21

2.49

2.15

2.57

2.02β

2.84α

0.281

0.281

0.230

0.495

0.535

0.012

0.292

0.157

0.288

Feather caring

Preen

15.2

18.3

16.2

18.7A

12.2B

19.9A

13.2β

20.7α

1.57

1.61

1.31

0.389

<0.001

< 0.001

0.001

0.480

0.210

  1. ADFI Average daily feed intake, SEM Standard error of the mean, C Control, BSF Black soldier fly, YM Yellow mealworm, P1 The hour before insect larva provision, P2 The hour during insect larva provision, P3 The hour after insect larva provision
  2. 1Three dietary treatments: C: control, commercial feed; BSF: commercial feed + 5% live BSF larvae; YM: commercial feed + 5% live YM larvae
  3. a–cMeans with lowercase superscript letters denote significant differences among treatments (P < 0.05)
  4. A–CMeans with uppercase superscript letters denote significant differences among periods (P < 0.05)
  5. α,βMeans with Greek alphabet superscript letters denote significant differences between week intervals (P < 0.05)