The genetic basis for the selection of dairy goats with enhanced resistance to gastrointestinal nematodes
Gastrointestinal nematodes (GIN) severely affect small ruminant production worldwide. Increasing problems of anthelmintic resistance have given strong impetus to the search for alternative strategies to control GIN. Selection of animals with an enhanced resistance to GIN has been shown to be success...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2017-01-01
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| Series: | Parasite |
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| Online Access: | https://doi.org/10.1051/parasite/2017033 |
| _version_ | 1797427276876349440 |
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| author | Heckendorn Felix Bieber Anna Werne Steffen Saratsis Anastasios Maurer Veronika Stricker Chris |
| author_facet | Heckendorn Felix Bieber Anna Werne Steffen Saratsis Anastasios Maurer Veronika Stricker Chris |
| author_sort | Heckendorn Felix |
| collection | DOAJ |
| description | Gastrointestinal nematodes (GIN) severely affect small ruminant production worldwide. Increasing problems of anthelmintic resistance have given strong impetus to the search for alternative strategies to control GIN. Selection of animals with an enhanced resistance to GIN has been shown to be successful in sheep. In goats, the corresponding information is comparatively poor. Therefore, the present study was designed to provide reliable data on heritabilities of and genetic correlations between phenotypic traits linked to GIN and milk yield in two major dairy goat breeds (Alpine and Saanen). In all, 20 herds totalling 1303 goats were enrolled in the study. All herds had (i) a history of gastrointestinal nematode infection, (ii) uniform GIN exposure on pasture and (iii) regular milk recordings. For all goats, individual recordings of faecal egg counts (FEC), FAMACHA© eye score, packed cell volume (PCV) and milk yield were performed twice a year with an anthelmintic treatment in between. The collected phenotypic data were multivariately modelled using animal as a random effect with its covariance structure inferred from the pedigree, enabling estimation of the heritabilities of the respective traits and the genetic correlation between them. The heritabilities of FEC, FAMACHA© and PCV were 0.07, 0.22 and 0.22, respectively. The genetic correlation between FEC and FAMACHA© was close to zero and −0.41 between FEC and PCV. The phenotypic correlation between FEC and milk yield was close to zero, whereas the genetic correlation was 0.49. Our data suggest low heritability of FEC in Saanen and Alpine goats and an unfavourable genetic correlation of FEC with milk yield. |
| first_indexed | 2024-03-09T08:41:57Z |
| format | Article |
| id | doaj.art-7e364f6d820b471d8005d19445a407bc |
| institution | Directory Open Access Journal |
| issn | 1776-1042 |
| language | English |
| last_indexed | 2024-03-09T08:41:57Z |
| publishDate | 2017-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Parasite |
| spelling | doaj.art-7e364f6d820b471d8005d19445a407bc2023-12-02T16:31:27ZengEDP SciencesParasite1776-10422017-01-01243210.1051/parasite/2017033parasite160118The genetic basis for the selection of dairy goats with enhanced resistance to gastrointestinal nematodesHeckendorn FelixBieber AnnaWerne SteffenSaratsis AnastasiosMaurer VeronikaStricker ChrisGastrointestinal nematodes (GIN) severely affect small ruminant production worldwide. Increasing problems of anthelmintic resistance have given strong impetus to the search for alternative strategies to control GIN. Selection of animals with an enhanced resistance to GIN has been shown to be successful in sheep. In goats, the corresponding information is comparatively poor. Therefore, the present study was designed to provide reliable data on heritabilities of and genetic correlations between phenotypic traits linked to GIN and milk yield in two major dairy goat breeds (Alpine and Saanen). In all, 20 herds totalling 1303 goats were enrolled in the study. All herds had (i) a history of gastrointestinal nematode infection, (ii) uniform GIN exposure on pasture and (iii) regular milk recordings. For all goats, individual recordings of faecal egg counts (FEC), FAMACHA© eye score, packed cell volume (PCV) and milk yield were performed twice a year with an anthelmintic treatment in between. The collected phenotypic data were multivariately modelled using animal as a random effect with its covariance structure inferred from the pedigree, enabling estimation of the heritabilities of the respective traits and the genetic correlation between them. The heritabilities of FEC, FAMACHA© and PCV were 0.07, 0.22 and 0.22, respectively. The genetic correlation between FEC and FAMACHA© was close to zero and −0.41 between FEC and PCV. The phenotypic correlation between FEC and milk yield was close to zero, whereas the genetic correlation was 0.49. Our data suggest low heritability of FEC in Saanen and Alpine goats and an unfavourable genetic correlation of FEC with milk yield.https://doi.org/10.1051/parasite/2017033Dairy goatGastrointestinal nematodeHeritabilityGenetic correlationPhenotypic correlationProduction |
| spellingShingle | Heckendorn Felix Bieber Anna Werne Steffen Saratsis Anastasios Maurer Veronika Stricker Chris The genetic basis for the selection of dairy goats with enhanced resistance to gastrointestinal nematodes Parasite Dairy goat Gastrointestinal nematode Heritability Genetic correlation Phenotypic correlation Production |
| title | The genetic basis for the selection of dairy goats with enhanced resistance to gastrointestinal nematodes |
| title_full | The genetic basis for the selection of dairy goats with enhanced resistance to gastrointestinal nematodes |
| title_fullStr | The genetic basis for the selection of dairy goats with enhanced resistance to gastrointestinal nematodes |
| title_full_unstemmed | The genetic basis for the selection of dairy goats with enhanced resistance to gastrointestinal nematodes |
| title_short | The genetic basis for the selection of dairy goats with enhanced resistance to gastrointestinal nematodes |
| title_sort | genetic basis for the selection of dairy goats with enhanced resistance to gastrointestinal nematodes |
| topic | Dairy goat Gastrointestinal nematode Heritability Genetic correlation Phenotypic correlation Production |
| url | https://doi.org/10.1051/parasite/2017033 |
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