A pilot study on dietary and faecal calcium/phosphorus ratios in different types of captive ruminating herbivores
Abstract Quantitative differences in calcium and phosphorus metabolism between domestic species exist and can be visualised using data on calcium and phosphorus intake and faecal excretion. The parameter for analysing the results was defined as Δ = dietary calcium/phosphorus (Ca/P) ratio – faecal Ca...
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Veterinary Medicine and Science |
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| Online Access: | https://doi.org/10.1002/vms3.667 |
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| author | Linda Böswald Britta Dobenecker Maike Lücht Christine Gohl Ellen Kienzle |
| author_facet | Linda Böswald Britta Dobenecker Maike Lücht Christine Gohl Ellen Kienzle |
| author_sort | Linda Böswald |
| collection | DOAJ |
| description | Abstract Quantitative differences in calcium and phosphorus metabolism between domestic species exist and can be visualised using data on calcium and phosphorus intake and faecal excretion. The parameter for analysing the results was defined as Δ = dietary calcium/phosphorus (Ca/P) ratio – faecal Ca/P ratio. In previous studies, hindgut fermenters had significantly higher Δ values than ruminants (sheep, cattle, goats), which was explained by the high calcium digestibilities in hindgut fermenters in contrast to highly efficient phosphorus recycling in ruminants. The first hypothesis of the present study was that different types of ruminants (grazer, browser, intermediate feeder) would show differences in Δ as a proxy for quantitative calcium and phosphorus metabolism. The second hypothesis was that camelids as functional, but not taxonomic ruminants would show Δ values similar to ruminants. We used herbivorous zoo animals (17 species, hindgut and foregut fermenters), which were kept on their regular diet without variation for 1 week. Then, faecal samples were obtained from the individual animals. Feed items and faecal samples were analysed for calcium and phosphorus, and dietary and faecal Ca/P ratios as well as Δ were calculated. A comparison of the species groups (one‐way ANOVA on ranks, p < 0.05) showed that zoo hindgut fermenters had significantly higher Δ values (0.67 ± 0.34) than camelids and zoo ruminants (–1.07 ± 0.35 and –1.87 ± 1.56). There was no significant difference between camelids, grazers (–1.49 ± 1.31), browsers (–1.63 ± 0.88) and intermediate feeders (–2.11 ± 1.76). The ruminant species from this study had markedly lower Δ than domestic ruminants from literature data. Especially intermediate feeders had low Δ, possibly due to more efficient phosphorus recycling than the domestic ruminants. |
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| institution | Directory Open Access Journal |
| issn | 2053-1095 |
| language | English |
| last_indexed | 2024-12-23T14:51:52Z |
| publishDate | 2022-01-01 |
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| series | Veterinary Medicine and Science |
| spelling | doaj.art-0ed103b00d8a4ad2865dcb7335955a3c2022-12-21T17:42:54ZengWileyVeterinary Medicine and Science2053-10952022-01-018134935610.1002/vms3.667A pilot study on dietary and faecal calcium/phosphorus ratios in different types of captive ruminating herbivoresLinda Böswald0Britta Dobenecker1Maike Lücht2Christine Gohl3Ellen Kienzle4Chair for Animal Nutrition and Dietetics Faculty of Veterinary Medicine, Department of Veterinary Sciences Ludwig‐Maximilians‐Universität München Munich GermanyChair for Animal Nutrition and Dietetics Faculty of Veterinary Medicine, Department of Veterinary Sciences Ludwig‐Maximilians‐Universität München Munich GermanyMünchener Tierpark Hellabrunn AG Munich GermanyMünchener Tierpark Hellabrunn AG Munich GermanyChair for Animal Nutrition and Dietetics Faculty of Veterinary Medicine, Department of Veterinary Sciences Ludwig‐Maximilians‐Universität München Munich GermanyAbstract Quantitative differences in calcium and phosphorus metabolism between domestic species exist and can be visualised using data on calcium and phosphorus intake and faecal excretion. The parameter for analysing the results was defined as Δ = dietary calcium/phosphorus (Ca/P) ratio – faecal Ca/P ratio. In previous studies, hindgut fermenters had significantly higher Δ values than ruminants (sheep, cattle, goats), which was explained by the high calcium digestibilities in hindgut fermenters in contrast to highly efficient phosphorus recycling in ruminants. The first hypothesis of the present study was that different types of ruminants (grazer, browser, intermediate feeder) would show differences in Δ as a proxy for quantitative calcium and phosphorus metabolism. The second hypothesis was that camelids as functional, but not taxonomic ruminants would show Δ values similar to ruminants. We used herbivorous zoo animals (17 species, hindgut and foregut fermenters), which were kept on their regular diet without variation for 1 week. Then, faecal samples were obtained from the individual animals. Feed items and faecal samples were analysed for calcium and phosphorus, and dietary and faecal Ca/P ratios as well as Δ were calculated. A comparison of the species groups (one‐way ANOVA on ranks, p < 0.05) showed that zoo hindgut fermenters had significantly higher Δ values (0.67 ± 0.34) than camelids and zoo ruminants (–1.07 ± 0.35 and –1.87 ± 1.56). There was no significant difference between camelids, grazers (–1.49 ± 1.31), browsers (–1.63 ± 0.88) and intermediate feeders (–2.11 ± 1.76). The ruminant species from this study had markedly lower Δ than domestic ruminants from literature data. Especially intermediate feeders had low Δ, possibly due to more efficient phosphorus recycling than the domestic ruminants.https://doi.org/10.1002/vms3.667antelopedigestive physiologyintermediate feedermineralsnutrition |
| spellingShingle | Linda Böswald Britta Dobenecker Maike Lücht Christine Gohl Ellen Kienzle A pilot study on dietary and faecal calcium/phosphorus ratios in different types of captive ruminating herbivores Veterinary Medicine and Science antelope digestive physiology intermediate feeder minerals nutrition |
| title | A pilot study on dietary and faecal calcium/phosphorus ratios in different types of captive ruminating herbivores |
| title_full | A pilot study on dietary and faecal calcium/phosphorus ratios in different types of captive ruminating herbivores |
| title_fullStr | A pilot study on dietary and faecal calcium/phosphorus ratios in different types of captive ruminating herbivores |
| title_full_unstemmed | A pilot study on dietary and faecal calcium/phosphorus ratios in different types of captive ruminating herbivores |
| title_short | A pilot study on dietary and faecal calcium/phosphorus ratios in different types of captive ruminating herbivores |
| title_sort | pilot study on dietary and faecal calcium phosphorus ratios in different types of captive ruminating herbivores |
| topic | antelope digestive physiology intermediate feeder minerals nutrition |
| url | https://doi.org/10.1002/vms3.667 |
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