How strain and production system effects chicken welfare and quality in meat
There are several reasons why organic chicken production is scarce in Sweden. Lack of slow growing (SG) strains combined with higher production costs, lower meat-yield and uncertainty of consumers’ willingness to pay seems to be the main reasons. EU-legislations imply use of indigenous slow- or medi...
| Autor principal: | |
|---|---|
| Formato: | First cycle, G2E |
| Lenguaje: | sueco Inglés |
| Publicado: |
2014
|
| Materias: | |
| Acceso en línea: | https://stud.epsilon.slu.se/6867/ |
| _version_ | 1855571083629953024 |
|---|---|
| author | Wilhelmsson, Sofia |
| author_browse | Wilhelmsson, Sofia |
| author_facet | Wilhelmsson, Sofia |
| author_sort | Wilhelmsson, Sofia |
| collection | Epsilon Archive for Student Projects |
| description | There are several reasons why organic chicken production is scarce in Sweden. Lack of slow growing (SG) strains combined with higher production costs, lower meat-yield and uncertainty of consumers’ willingness to pay seems to be the main reasons. EU-legislations imply use of indigenous slow- or medium growing strains in organic production, nevertheless, fast growing (FG) broilers are often used due to their effectiveness. Increased consumption of processed food creates a market for conventionally rearing of very heavy broilers. Through selection programs FG broilers gain weight fast leading to inactivity, imbalanced bodies, disease and high mortality rates. This combined with legislations by KRAV regarding daily growth and slaughter age make FG broilers used in organic production questionable. SG strains adapt well and benefit from extensive conditions and increased motion whilst FG broilers cannot fully use outdoor areas. In organic production, FG broilers have significantly higher mortality rates than medium and SG chickens. Quality of chicken meat is mainly afflicted by genotype, maturity, sex and production system. Related to age, meat from SG strains contains more protein and half as much intramuscular fat than meat from FG broilers. For several years, FG broiler meat qualities have been based on offering consumers’ cheap meat. Consumers’ today are more concerned about animal-welfare than in the past and the market for extensive produced poultry are growing. |
| format | First cycle, G2E |
| id | RepoSLU6867 |
| institution | Swedish University of Agricultural Sciences |
| language | Swedish Inglés |
| publishDate | 2014 |
| publishDateSort | 2014 |
| record_format | eprints |
| spelling | RepoSLU68672014-06-24T12:00:08Z https://stud.epsilon.slu.se/6867/ How strain and production system effects chicken welfare and quality in meat Wilhelmsson, Sofia Animal genetics and breeding There are several reasons why organic chicken production is scarce in Sweden. Lack of slow growing (SG) strains combined with higher production costs, lower meat-yield and uncertainty of consumers’ willingness to pay seems to be the main reasons. EU-legislations imply use of indigenous slow- or medium growing strains in organic production, nevertheless, fast growing (FG) broilers are often used due to their effectiveness. Increased consumption of processed food creates a market for conventionally rearing of very heavy broilers. Through selection programs FG broilers gain weight fast leading to inactivity, imbalanced bodies, disease and high mortality rates. This combined with legislations by KRAV regarding daily growth and slaughter age make FG broilers used in organic production questionable. SG strains adapt well and benefit from extensive conditions and increased motion whilst FG broilers cannot fully use outdoor areas. In organic production, FG broilers have significantly higher mortality rates than medium and SG chickens. Quality of chicken meat is mainly afflicted by genotype, maturity, sex and production system. Related to age, meat from SG strains contains more protein and half as much intramuscular fat than meat from FG broilers. For several years, FG broiler meat qualities have been based on offering consumers’ cheap meat. Consumers’ today are more concerned about animal-welfare than in the past and the market for extensive produced poultry are growing. Det finns flera orsaker till varför den ekologiska kycklingproduktionen i Sverige är liten. De viktigaste anledningarna är brist på långsamväxande raser, höga produktionskostnader och ekonomisk osäkerhet. Trots att lagar på EU-nivå hänvisar långsamväxande raser till extensiv produktion används snabbväxande hybrider på grund av deras effektivitet. Konsumtionen av halvfabrikat ökar och i takt med det växer marknaden för stora slaktkroppar. Selektion för snabb tillväxt har orsakat inaktivitet, obalanserade kroppar, sjukdom och hög dödlighet hos broilers, detta i kombination med KRAV:s regler angående daglig tillväxt och slaktålder gör att användning av broilers i ekologisk produktion kan ifrågasättas. Långsamväxande raser är väl anpassade till och drar nytta av extensiva förhållanden, snabbväxande hybrider kan inte utnyttja utomhusvistelse lika väl som de långsamväxande raser. Snabbväxande kycklingar har signifikant högre dödlighet i ekologisk produktion än långsamväxande. Köttkvaliteten påverkas framförallt av genotyp, köttmognad, kön och produktionssystem. Kött från långsamväxande raser innehåller mer protein och hälften så mycket intramuskulärt fett än kött från snabbväxande hybrider. Kycklingkött har tidigare värderats som en billig proteinkälla men konsumenter värdesätter mer och mer en förbättrad djurvälfärd och köttkvalitet vilket ökar marknaden för ekologiskt producerad kyckling. 2014-06-16 First cycle, G2E NonPeerReviewed application/pdf sv https://stud.epsilon.slu.se/6867/11/wilhelmsson_s_140624.pdf Wilhelmsson, Sofia, 2014. How strain and production system effects chicken welfare and quality in meat : a literature review. First cycle, G2E. Uppsala: (VH) > Dept. of Animal Breeding and Genetics (until 231231) <https://stud.epsilon.slu.se/view/divisions/OID-670.html> urn:nbn:se:slu:epsilon-s-3357 eng |
| spellingShingle | Animal genetics and breeding Wilhelmsson, Sofia How strain and production system effects chicken welfare and quality in meat |
| title | How strain and production system effects chicken welfare and quality in meat |
| title_full | How strain and production system effects chicken welfare and quality in meat |
| title_fullStr | How strain and production system effects chicken welfare and quality in meat |
| title_full_unstemmed | How strain and production system effects chicken welfare and quality in meat |
| title_short | How strain and production system effects chicken welfare and quality in meat |
| title_sort | how strain and production system effects chicken welfare and quality in meat |
| topic | Animal genetics and breeding |
| url | https://stud.epsilon.slu.se/6867/ https://stud.epsilon.slu.se/6867/ |