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| 2. |
- Ahlman, Therese, et al.
(författare)
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Differences in preferences for breeding traits between organic and conventional dairy producers in Sweden
- 2014
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Ingår i: Livestock Science. - : Elsevier BV. - 1871-1413 .- 1878-0490. ; 162, s. 5-14
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Tidskriftsartikel (refereegranskat)abstract
- Development of sustainable breeding goals for dairy production has to consider the producers' preferences which are likely to differ between production systems. The number of dairy producers with herds certified according to the standards of organic production has increased during the last decades. Traditionally, organic producers use animals selected in conventional production systems but the traits important in organic herds have been suggested to differ due to the different production conditions. The aim of this study was to assess what traits Swedish organic and conventional daily producers consider to be important for the cows in their herds, and the relative importance of traits in the two production systems.An advanced web questionnaire with an underlying selection index was developed. The selection index was not shown to the respondents but it enabled them to weight traits against each other based on the genetic progress obtained. The questionnaire also included questions about what traits the producers intuitively considered important for the cows in their herds and how they ranked 15 given production and functional traits. The questionnaire was answered by 468 Swedish dairy producers of which 122 had a certified organic herd and 346 had a conventional herd.The results of this study show that the trait longevity was ranked first by both organic and conventional Swedish dairy producers. However, the ranking differed to some extent between the production systems for other traits, e.g. mastitis resistance and milk production. Swedish producers with organic herds tended to desire a higher genetic gain in disease resistance, including mastitis and parasite resistance, compared with producers with conventional herds. The results also reflect a somewhat lower interest in milk production level among producers with organic production. However, as the traits most important for Swedish producers with organic herds are already considered in the current Nordic breeding goal they can continue the use of this animal material. (C) 2014 The Authors. Published by Elsevier B.V.
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| 3. |
- Ahlman, Therese, et al.
(författare)
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Organic producers' preferences regarding traits important in dairy production
- 2012
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Ingår i: Landbauforschung Völkenrode. Sonderheft. - 0376-0723. ; 362, s. 343-346
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Konferensbidrag (refereegranskat)abstract
- Much effort has been put on the development and promotion of organic dairy products, but little attention has been paid to the foundation of the production, i.e. the animal material. The process of developing sustainable breeding strategies, in agreement with the goals for organic production, should involve identification of traits especially important in organic production. The aim of this study is to identify organic and conventional producers' preferences regarding traits important in dairy production. A web based questionnaire has been developed and answered by 468 dairy farm-ers in Sweden (26 % organic producers). The results show that organic producers rank traits relat-ed to resistance to diseases higher than conventional producers, while milk production, lactation curve, temperament and claw and leg health were ranked higher by conventional farmers. This in-dicates a need for breeding goals adjusted to satisfy farmers with different type of production.
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| 6. |
- Bergqvist, Ann-Sofi, et al.
(författare)
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Individual identification of pigs using microchip – a pilot study
- 2013
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- Individual identification in pigs is a key feature for management, traceability, breeding, trade-, and disease control.Conventional identification methods used for pigs such as ear-notching, ear tags and tattoos, are not sufficiently efficient due to losses and code erasing. The purpose of this pilot project was to examine the possibility to use injectable microchips for identification in pigs.The aim was to study retention rate, functionality and tissue damage of microchip routinely used for identification in cats, dogs or horses, when injected s.c. in the ear of fattening pigs, compared to conventional ear tags. A total of 69 pigs were marked with a plastic ear tag in the left ear at 4 weeks of age, and with an electronic microchip s.c. in the right ear at 10 weeks of age. The readability of the two identification methods was recorded every second week during the growing finishing period and at slaughter. Moreover, ears were collected at the slaughter plant and tissue damage in connection to the ear tag and chip was assessed as damage and no damage. Two pigs were culled during the growing finishing period due to lameness and 1 pig was not identified at the slaughter plant. Descriptive statistics were estimated, and chi-square tests were performed with procedure FREQ in the SAS package. No apparent animal health problems were noted during the experiment. During the growing finishing period, 13 pigs lost their microchips but no microchips had moved to other body parts.Of the 66 pigs examined at slaughter, 18.2 % could not be identified by the microchip while only 9.1 % had lost or unreadable plastic ear tags (p=0.128). Of the ears with readable identification (microchip or ear tag), a significantly lower proportion of chip marked ears had tissue damage in connection with the chip (11.4 %) compared to control ears with damage in connection to the ear tag (88.6 %) (p<0.001). This method meets the requirements of an identification system for pigs that is unique, easy to read, does not produce apparent disturbances to the animals and minimal pathological changes. However, a non-acceptable number of microchips were lost after application. The reason may be too large size of the chip and the needle used for injecting them which probably made the chip fall out before proper healing of the skin.
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| 8. |
- Brunberg, Emma, et al.
(författare)
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Tail biting in fattening pigs: Associations between frequency of tail biting and other abnormal behaviours
- 2011
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Ingår i: Applied Animal Behaviour Science. - : Elsevier BV. - 0168-1591 .- 1872-9045. ; 133, s. 18-25
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Tidskriftsartikel (refereegranskat)abstract
- This study investigated the association between tail biting (TB) and other abnormal behaviours in a group of non-tail docked pigs. Behavioural data were collected from 742 pigs housed on a commercial farm. The prevalence of performed and received TB, belly nosing, bar biting, ear biting and mounting was recorded during two 30 min observation periods. Pigs were categorized based on the number of performed tail bites/hour; nonperformers (NP, TB = 0, n = 643), low performers (LP, TB = 1–4, n = 79), high performers (HP, TB > 4, n = 20) and the number of received tail bites; non-receivers (NR, TB = 0, n = 559), low receivers (LR, TB = 1–2, n = 133) and high receivers (HR, TB > 2, n = 50). Based on the intensity of the receivers’ response to being bitten, TB behaviour was further classified into three grades; no, mild or severe reaction. Tail-in-mouth behaviour, which did not involve biting, was also recorded. The proportion of performed bites classified as severe was significantly higher (P < 0.001) in HP (mean ± s.d.: 0.30 ± 0.21) than in LP (0.11 ± 0.28). The HR category received a lower proportion of mild tail bites (P < 0.003, 0.14 ± 0.15) than LR (0.31 ± 0.41). The fact that the HP category also performed a higher proportion of severe tail bites may be of use in practice when wanting to identify the main tail biting pigs in the pen. The three performer categories differed in the amount of performed tail-in-mouth (P < 0.001). HP performed most (4.30 ± 5.64) followed by LP (0.90 ± 1.26) and NP (0.19 ± 0.66). A higher frequency (P < 0.05) of ear biting was performed by HP (0.45 ± 0.69) than NP (0.26 ± 1.32) and both tail biter categories performed more bar biting than nonperformers (HP: 1.10 ± 2.13, LP: 0.73 ± 2.03, NP: 0.28 ± 1.32). These results suggest that the tail biters, especially the HP category, perform a higher frequency of abnormal behaviours that involve biting behaviour. LP performed more belly nosing (0.80 ± 1.31) and ‘other abnormal’ behaviours (1.41 ± 2.58, P < 0.001) than NP (belly nosing: 0.44 ± 1.73, P = 0.002; ‘other abnormal’: 0.48 ± 1.56, P < 0.001). These results may suggest that LP pigs are more general in their repertoire of performed abnormal behaviour and HP more specialised in behaviours including biting. The receiver categories differed in the amount of received ‘other abnormal’ behaviours, for which HR (1.16 ± 1.89) received significantly more than both LR (0.68 ± 1.10, P < 0.01) and NR (0.52 ± 1.24, P < 0.001). This could support the earlier proposed hypothesis that some animals are predisposed to receive more of these abnormal behaviours than others.
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| 9. |
- Forsberg, Frida, et al.
(författare)
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Individuell märkning av slaktgrisar med mikrochip
- 2014
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Ingår i: Svenska Pigs Hemsida. ; , s. 1 s-
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Annan publikation (populärvet., debatt m.m.)abstract
- Suggor har ofta individuell märkning medan omgångsproducerade slaktgrisar vanligtvis märks med ett besättningsnummer. Det finns fördelar med individuell märkning även av slaktgrisar och i en ny studie finansierad av Stiftelsen svensk grisforskning och Kungliga vetenskapsakademin undersöks potentialen av att använda mikrochip som märkningsmetod.
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| 10. |
- Keeling, Linda, et al.
(författare)
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Scoring tail damage in pigs: an evaluation based on recordings at Swedish slaughterhouses
- 2012
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Ingår i: Acta Veterinaria Scandinavica. - : Springer Science and Business Media LLC. - 0044-605X .- 1751-0147. ; 54
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Tidskriftsartikel (refereegranskat)abstract
- Conclusions: While the current method to record tail damage in Sweden was found to be reliable as a method to identify problem farms, it clearly underestimates the actual prevalence of tail damage. For monitoring and benchmarking purposes, both in Sweden and internationally, we propose that a three graded scale including both old and new tail damage would be more appropriate. The scale consists of one class for no tail damage, one for mild tail damage (injured or shortened tail with more than half of the tail remaining) and one for severe tail damage (half or less of the tail remaining).
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