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À¸·Î Å« flock sizeÀÇ ³óÀåÀÌ ¸¹ÀÌ ºÐÆ÷µÈ ÃæºÏ, Àü³² ¹× °æ±âÁö¿ª ³óÀå¿¡¼­ »ì¸ð
³Ú¶ó ¿À¿°µµ°¡ ³ôÀº °ÍÀ¸·Î ³ªÅ¸³²
¡Û À§»ýÀÎÁõ½Ã½ºÅÛÀÎ HACCP ÀÎÁõ ³óÀåÀÇ °æ¿ì¿¡µµ ºñÀÎÁõ³óÀå°ú µ¿ÀÏÇÏ°Ô ³ôÀº
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Table 1. Risk factors for Salmonella at the Korean layer farms
No. of
No. of sample types affected
No. of
samples
Risk factors
flocks
P value
Egg
Egg
positives for
Feces
Dust
tested
shells
contents
Salmonella(%)
Total
67
34 (50.7)
28
27
10
3
Province
Jeonbook
8
0 (0)
Jeonnam
6
5 (83.3)
5
5
3
Kyungbook
15
5 (33.3)
3
4
2
Kyungnam
20
9 (45.0)
5
4
1
Kyunggi
9
6 (66.7)
6
6
3
Chungbook
9
9 (100)
9
9
4
Form of poultry house
0.183
No windows
55
30 (54.5)
25
24
8
3
With windows
12
4 (33.3)
3
3
2
Flock size (no. of layers)
0.021
Very small (¡Â 20,000)
23
10 (43.4)
9
8
2
3
Small (20,001?40,000)
19
7 (36.8)
4
3
1
Medium (40,001?60,000)
10
4 (40.0)
3
3
1
Large (60,001?80,000)
7
7 (100
6
7
4
Very large (¡Ã 80,001)
8
6 (75.0)
6
6
2
0.868
Age of laying hens (weeks)
5
1 (25.0)
1
1
¡Â15
17
10 (58.8)
7
9
4
1
16-30
14
7 (50.0)
6
4
1
1
46-60
15
8 (53.3)
6
7
3
61-75
6
4 (66.7)
4
3
1
¡Ã76
10
4 (40.0)
4
3
1
1
Hen-day egg production (%)
0.473
Pullet
9
4 (44.4)
3
4
0-70
5
3 (60.0)
2
3
1
1
71-80
11
4 (36.3)
3
3
1
81-90
33
17 (63.6)
14
13
6
1
91-100
9
6 (66.7)
6
4
2
1
HACCP certification
0.345
Not certificated
45
25 (55.5)
15
14
6
2
Certificated
22
9 (40.9)
13
13
4
1
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