Effects of Mixing Pigs during the Growing-Finishing Period

Sherritt, G. W.; Graves, H.B.; Gobble, J. L.; Hazlett, V. E.

doi:10.2527/jas1974.395834x

Cited by 50 publications

(12 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Instead, the superiority in daily weight gain of pigs in the sibling groups coincided with the improvement by 3-4% of the feed conversion ratio, which agrees with results reported by Rundgren & Lofquist (1989). The present results on the effect of mixing pigs fed restrictedly corroborate those of others (Sherrit et al, 1974;Graves et al, 1978;Tan et al, 1991), whereas these authors did not notice any impairing effect of mixing on ad libitum fed pigs.…”

Section: Discussionsupporting

confidence: 89%

Performance, behaviour and immune capacity of domestic pigs reared for slaughter as siblings or transported and reared in mixed groups

Lund

Wallgren

Rundgren

et al. 1998

Acta Agriculturae Scandinavica, Section A - Animal Science

View full text Add to dashboard Cite

Performance, behaviour and immune capacity of domestic pigs reared for slaughter as siblings or transported and reared in mixed groups. Kilogram feed per kg weight gain was lower (4%) and daily weight gain was higher (3%) for the siblings, which also showed the lowest level of agonistic interactions, as compared with the mixed groups. No direct relationships between agonistic interactions, plasma cortisol and measures of "immune capacity" (total and differential leukocyte counts, mitogen-induced proliferation and interleukin-2 production in vitro) were found. The order of voluntarily leaving a pen and entering a scale were correlated to individual intra-pen weight ranking class; this ranking could be predicted by an x-matrix of the blood variables when subjected to partial least square analysis. Thus, a linkage between weight ranking class and physiological variables could be observed.

show abstract

Section: Discussionsupporting

confidence: 89%

Performance, behaviour and immune capacity of domestic pigs reared for slaughter as siblings or transported and reared in mixed groups

Lund

Wallgren

Rundgren

et al. 1998

Acta Agriculturae Scandinavica, Section A - Animal Science

View full text Add to dashboard Cite

show abstract

“…Frequency of mixing (Sherritt et al, 1974) (Banhazi et al, 2008) Records of treatments 11. Efforts should be in place to prevent disease, in particular by maintaining good hygiene, such as minimising the exposure of the pigs to their faeces and urine.…”

Section: Skin Lesions Locomotion Score Aggression Resulting In Injurymentioning

confidence: 99%

Scientific Opinion on the use of animal-based measures to assess welfare in pigs

Prunier¹

2012

EFSA Journal

View full text Add to dashboard Cite

Animal-based measures, identified on the basis of scientific evidence, can be used effectively in the evaluation of the welfare of on-farm pigs in relation to laws, codes of practice, quality assurance schemes and management. Some of these measures are also appropriate for ante-mortem inspection and there are additional post-mortem animal-based measures which can be taken at the slaughterhouse. Non-animal-based measures can be used when the association between them and the welfare outcome is strong and when they are more efficient than animalbased measures as a means to safeguard welfare. Both animal-based and non-animal-based measures can be useful predictors of welfare in pigs. In order to assess welfare, a wide range of measures is needed. However, to assess aspects of welfare it is unnecessary to use all animal-based measures on every occasion. The choice of animal-based measures will depend upon the specific objectives of the assessment. The full list is comparable to a 'toolbox', from which the appropriate range of measures can be selected. The Welfare Quality ® protocol provides information on the majority of the welfare outcomes of the main hazards identified in the EFSA Scientific Opinions but not those where time limitation prevents it. There are currently insufficient animal-based measures to use as welfare outcome indicators on-farm or in the slaughterhouse to assess the issues of pain, frustration and other positive and negative emotional states. The extent to which short-term management can prevent the negative effects of hazards arising from genetic selection, and of most housing-related problems, is extremely limited. Herd monitoring and surveillance programmes should be implemented within the pig industry using a range of appropriate animal-based measures to document welfare changes over time. There should be both initial and ongoing training of assessors to ensure valid and reliable welfare measurement.

show abstract

“…Fighting has led to decreased weight gain and decreased food conversion efficiency (Charlick, Livingstone, McNair and Sainsbury, 1968;Dantzer, 1970;Bryant and Ewbank, 1972;Sherritt, Graves, Gobble and Hazlett, 1974;Graves et al, 1978). Rundgren and Lofquist (1989) found that mixing pigs, which were individually fed, decreased daily weight gain in the period of 23 to 100 kg live weight for barrows, but not for gilts.…”

Section: Introductionmentioning

confidence: 99%

Meat quality in pigs reared in groups kept as a unit during the fattening period and slaughter

Karlsson

Lundström

1992

Anim. Sci.

View full text Add to dashboard Cite

Meat quality was studied in pigs reared in groups kept as units during the fattening period and slaughter (unmixed). The results were compared with conventionally reared pigs, which were mixed during the fattening period, at transport to the abattoir and at lairage (mixed). It is concluded that the unmixed pigs in this study had a better meat quality measured as pH,, pH u , weight loss and also fewer skin lacerations compared with the mixed groups (i.e. less development of pale, soft exudative (PSE) and dark, firm dry (DFD) in the unmixed animals). There were no significant differences in meat colour or in lean content between the unmixed and mixed pigs.

show abstract

Effects of Mixing Pigs during the Growing-Finishing Period

Cited by 50 publications

References 0 publications

Performance, behaviour and immune capacity of domestic pigs reared for slaughter as siblings or transported and reared in mixed groups

Performance, behaviour and immune capacity of domestic pigs reared for slaughter as siblings or transported and reared in mixed groups

Scientific Opinion on the use of animal-based measures to assess welfare in pigs

Meat quality in pigs reared in groups kept as a unit during the fattening period and slaughter

Contact Info

Product

Resources

About