Acute toxic plant estimation in grazing sheep ingesta and feces
'Romerillo' (Baccharis coridifolia DC), 'duraznillo negro' (Cestrum parqui L'Hérit.), and 'sunchillo' (Wedelia glauca (Ort.) Hoff.) are highly toxic species producing important economic losses of livestock in Argentina. This study assessed the accuracy and precisio...
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2003
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0022409X_v56_n4_p353_Cid http://hdl.handle.net/20.500.12110/paper_0022409X_v56_n4_p353_Cid |
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paper:paper_0022409X_v56_n4_p353_Cid2023-06-08T14:50:50Z Acute toxic plant estimation in grazing sheep ingesta and feces Accuracy Baccharis coridifolia Cestrum parqui Microhistological technique Precision Wedelia glauca accuracy assessment estimation method feces grazing precision sheep stomach content toxic organism Baccharis Baccharis coridifolia Baccharis coridifolia Bidens alba Cestrum parqui Cestrum parqui Ovis aries Pascalia glauca Vertebrata Wedelia Wedelia glauca 'Romerillo' (Baccharis coridifolia DC), 'duraznillo negro' (Cestrum parqui L'Hérit.), and 'sunchillo' (Wedelia glauca (Ort.) Hoff.) are highly toxic species producing important economic losses of livestock in Argentina. This study assessed the accuracy and precision in the estimation of the percentage and the mass of these species in the ingesta and feces of sheep experimentally poisoned. This study also evaluated whether the quantified percentage and the calculated mass of each toxic species in the rumen+reticulum, the easiest region to sample, are good estimates of their relative consumption. Results indicate that if species fragment density is quantified, and the percentages of non recognized fragments of the toxic species in their in vitro digestion residues are accounted for (attributing some proportion of the unidentified fragment pool to the target species), estimations are accurate, but their precision differ among species. For a 3 sheep sample, the average mass estimated by microhistological analysis represented 92.3 ± 5.8 (romerillo), 96.5 ± 17.3 (duraznillo negro), and 92.0 ± 12.5% (sunchillo) (P < 0.10) of the actual amount of each species consumed. The percentages of the toxic species in the total ingesta plus feces produced since the intoxication did not differ (P > 0.05) from those in the rumen+reticulum. For the evaluated species, the microhistological analysis of the rumen+reticulum not only confirmed the ingestion of the toxic species, but also adequately estimated the percentage in which they were ingested. 2003 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0022409X_v56_n4_p353_Cid http://hdl.handle.net/20.500.12110/paper_0022409X_v56_n4_p353_Cid |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Accuracy Baccharis coridifolia Cestrum parqui Microhistological technique Precision Wedelia glauca accuracy assessment estimation method feces grazing precision sheep stomach content toxic organism Baccharis Baccharis coridifolia Baccharis coridifolia Bidens alba Cestrum parqui Cestrum parqui Ovis aries Pascalia glauca Vertebrata Wedelia Wedelia glauca |
| spellingShingle |
Accuracy Baccharis coridifolia Cestrum parqui Microhistological technique Precision Wedelia glauca accuracy assessment estimation method feces grazing precision sheep stomach content toxic organism Baccharis Baccharis coridifolia Baccharis coridifolia Bidens alba Cestrum parqui Cestrum parqui Ovis aries Pascalia glauca Vertebrata Wedelia Wedelia glauca Acute toxic plant estimation in grazing sheep ingesta and feces |
| topic_facet |
Accuracy Baccharis coridifolia Cestrum parqui Microhistological technique Precision Wedelia glauca accuracy assessment estimation method feces grazing precision sheep stomach content toxic organism Baccharis Baccharis coridifolia Baccharis coridifolia Bidens alba Cestrum parqui Cestrum parqui Ovis aries Pascalia glauca Vertebrata Wedelia Wedelia glauca |
| description |
'Romerillo' (Baccharis coridifolia DC), 'duraznillo negro' (Cestrum parqui L'Hérit.), and 'sunchillo' (Wedelia glauca (Ort.) Hoff.) are highly toxic species producing important economic losses of livestock in Argentina. This study assessed the accuracy and precision in the estimation of the percentage and the mass of these species in the ingesta and feces of sheep experimentally poisoned. This study also evaluated whether the quantified percentage and the calculated mass of each toxic species in the rumen+reticulum, the easiest region to sample, are good estimates of their relative consumption. Results indicate that if species fragment density is quantified, and the percentages of non recognized fragments of the toxic species in their in vitro digestion residues are accounted for (attributing some proportion of the unidentified fragment pool to the target species), estimations are accurate, but their precision differ among species. For a 3 sheep sample, the average mass estimated by microhistological analysis represented 92.3 ± 5.8 (romerillo), 96.5 ± 17.3 (duraznillo negro), and 92.0 ± 12.5% (sunchillo) (P < 0.10) of the actual amount of each species consumed. The percentages of the toxic species in the total ingesta plus feces produced since the intoxication did not differ (P > 0.05) from those in the rumen+reticulum. For the evaluated species, the microhistological analysis of the rumen+reticulum not only confirmed the ingestion of the toxic species, but also adequately estimated the percentage in which they were ingested. |
| title |
Acute toxic plant estimation in grazing sheep ingesta and feces |
| title_short |
Acute toxic plant estimation in grazing sheep ingesta and feces |
| title_full |
Acute toxic plant estimation in grazing sheep ingesta and feces |
| title_fullStr |
Acute toxic plant estimation in grazing sheep ingesta and feces |
| title_full_unstemmed |
Acute toxic plant estimation in grazing sheep ingesta and feces |
| title_sort |
acute toxic plant estimation in grazing sheep ingesta and feces |
| publishDate |
2003 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0022409X_v56_n4_p353_Cid http://hdl.handle.net/20.500.12110/paper_0022409X_v56_n4_p353_Cid |
| _version_ |
1768541785293848576 |