A survey of straw use and tail biting in Swedish pig farms rearing undocked pigs

Table 6 Straw ration and straw length of provided straw in Swedish pig farms

	Nursery units						Finishing pig units
	n	Median	Mean	SD	Min	Max	n	Median	Mean	SD	Min	Max
All farms (including deep straw bedding)
Straw length, cm	35	5	6.3	2.6	1	10	31	8	8.2	4.1	1	20
Straw ration, g/pig per day	29	45	99	149	8	714	35	53	130	225	9	1156
Excluding farms with deep straw bedding
Straw length, cm	35	5	6.3	2.6	1	10	28	6.5	7.8	4.1	1	20
Straw ration, g/pig per day	22	29	35	24	8	85	28	50	62	45.5	9	225

n is number of farmers answering the question
The straw ration per pig was calculated from the farms straw consumption. Farms that were unable to provide such information was excluded from the calculations and hence the number of farms were reduced from 43 to 35 nursery units and 43–31 finishing pig units
The straw ration and straw length was also calculated excluding farms with deep litter systems (removing 6 nursery units, 4 finishing pig units) since deep litter systems are uncommon in European pig production

ISSN: 1751-0147