What do domestic livestock eat in northern Patagonian rangelands?
The Patagonian rangelands are dominated by steppes interspersed with meadows (locally called mallines), which are small but permanently humid areas, characterised by high spring–summer quality and productivity of grasses and grasslikes. The region’s main economic activity is sheep ranching, either a...
| Autores principales: | , , , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
| Publicado: |
CSIRO Publishing
2019
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/4971 https://doi.org/10.1071/AN11283 |
| _version_ | 1855035416244125696 |
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| author | Villagra, Edgar Sebastian Pelliza, Alicia Willems, Priscila Mabel Siffredi, Guillermo Lorenzo Bonvissuto, Griselda |
| author_browse | Bonvissuto, Griselda Pelliza, Alicia Siffredi, Guillermo Lorenzo Villagra, Edgar Sebastian Willems, Priscila Mabel |
| author_facet | Villagra, Edgar Sebastian Pelliza, Alicia Willems, Priscila Mabel Siffredi, Guillermo Lorenzo Bonvissuto, Griselda |
| author_sort | Villagra, Edgar Sebastian |
| collection | INTA Digital |
| description | The Patagonian rangelands are dominated by steppes interspersed with meadows (locally called mallines), which are small but permanently humid areas, characterised by high spring–summer quality and productivity of grasses and grasslikes. The region’s main economic activity is sheep ranching, either alone or mixed with goats and/or cattle, using horses as transportation animals. Overstocking has been signalled as one of the causes of rangeland degradation in this region. Knowledge of botanical composition of livestock diets provides valuable information helping in the design of management strategies to improve or maintain the forage resource. With this objective we studied the dietary botanical composition of domestic livestock on Patagonian ranches with and without mallines, at different seasons. It was found that the differences between diets of the same herbivore species on ranches with and without mallines were greater than the differences among the diets of the different herbivores species grazing in the same type of ranch.
Grasses were the forage class most consumed by livestock in 76% of ranches without mallines and in 38% of the diets of ranches with them, with Stipa spp. being the main species consumed. Grass-like species were important in ranches with mallines, specially Juncus spp., and woody plants (Chuquiraga spp. as the most consumed) in ranches without mallines. Forbs hardly exceeded 10% in some spring diets of sheep, at both ranch types. Grasslikes constituted the major component of the spring and summer cattle diets, and constituted one-third of winter diets. For the rest of the herbivores studied, this forage class was important in spring–summer diets, but insignificant in the winter samples. Goats showed a greater use of the shrub in the less productive ranches and they were the most important consumers of shrubs on ranches with mallines during winter, which is the critical season of forage production. We conclude that the presence of mallines strongly condition the diet composition of the studied domestic herbivores. And, since the use of forage classes is different between these animal species, given a ranch type, the replacement of single-species grazing by mixed grazing can achieve the optimal possible use of the Patagonian rangelands. |
| format | info:ar-repo/semantics/artículo |
| id | INTA4971 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | CSIRO Publishing |
| publisherStr | CSIRO Publishing |
| record_format | dspace |
| spelling | INTA49712019-04-24T18:38:14Z What do domestic livestock eat in northern Patagonian rangelands? Villagra, Edgar Sebastian Pelliza, Alicia Willems, Priscila Mabel Siffredi, Guillermo Lorenzo Bonvissuto, Griselda Pastizales Pastures Pastizal Natural Natural Pastures Nutrición Animal Animal Nutrition Livestock Ganado Región Patagónica The Patagonian rangelands are dominated by steppes interspersed with meadows (locally called mallines), which are small but permanently humid areas, characterised by high spring–summer quality and productivity of grasses and grasslikes. The region’s main economic activity is sheep ranching, either alone or mixed with goats and/or cattle, using horses as transportation animals. Overstocking has been signalled as one of the causes of rangeland degradation in this region. Knowledge of botanical composition of livestock diets provides valuable information helping in the design of management strategies to improve or maintain the forage resource. With this objective we studied the dietary botanical composition of domestic livestock on Patagonian ranches with and without mallines, at different seasons. It was found that the differences between diets of the same herbivore species on ranches with and without mallines were greater than the differences among the diets of the different herbivores species grazing in the same type of ranch. Grasses were the forage class most consumed by livestock in 76% of ranches without mallines and in 38% of the diets of ranches with them, with Stipa spp. being the main species consumed. Grass-like species were important in ranches with mallines, specially Juncus spp., and woody plants (Chuquiraga spp. as the most consumed) in ranches without mallines. Forbs hardly exceeded 10% in some spring diets of sheep, at both ranch types. Grasslikes constituted the major component of the spring and summer cattle diets, and constituted one-third of winter diets. For the rest of the herbivores studied, this forage class was important in spring–summer diets, but insignificant in the winter samples. Goats showed a greater use of the shrub in the less productive ranches and they were the most important consumers of shrubs on ranches with mallines during winter, which is the critical season of forage production. We conclude that the presence of mallines strongly condition the diet composition of the studied domestic herbivores. And, since the use of forage classes is different between these animal species, given a ranch type, the replacement of single-species grazing by mixed grazing can achieve the optimal possible use of the Patagonian rangelands. Estación Experimental Agropecuaria Bariloche Fil: Villagra, Edgar Sebastián. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina Fil: Pelliza, Alicia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina Fil: Willems, Priscila Mabel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina Fil: Siffredi, Guillermo Lorenzo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Área de Recursos Naturales; Argentina Fil: Bonvissuto, Griselda. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina 2019-04-24T18:27:32Z 2019-04-24T18:27:32Z 2013-02 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/4971 1836-0939 https://doi.org/10.1071/AN11283 eng info:eu-repo/semantics/restrictedAccess application/pdf CSIRO Publishing Animal Production Science 53(4) : 360-367. (2013) |
| spellingShingle | Pastizales Pastures Pastizal Natural Natural Pastures Nutrición Animal Animal Nutrition Livestock Ganado Región Patagónica Villagra, Edgar Sebastian Pelliza, Alicia Willems, Priscila Mabel Siffredi, Guillermo Lorenzo Bonvissuto, Griselda What do domestic livestock eat in northern Patagonian rangelands? |
| title | What do domestic livestock eat in northern Patagonian rangelands? |
| title_full | What do domestic livestock eat in northern Patagonian rangelands? |
| title_fullStr | What do domestic livestock eat in northern Patagonian rangelands? |
| title_full_unstemmed | What do domestic livestock eat in northern Patagonian rangelands? |
| title_short | What do domestic livestock eat in northern Patagonian rangelands? |
| title_sort | what do domestic livestock eat in northern patagonian rangelands |
| topic | Pastizales Pastures Pastizal Natural Natural Pastures Nutrición Animal Animal Nutrition Livestock Ganado Región Patagónica |
| url | http://hdl.handle.net/20.500.12123/4971 https://doi.org/10.1071/AN11283 |
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