dc.contributor.author
Paßlack, Nadine
dc.contributor.author
Kohn, Barbara
dc.contributor.author
Doherr, Marcus G.
dc.contributor.author
Zentek, Jürgen
dc.date.accessioned
2018-09-18T14:26:26Z
dc.date.available
2018-09-18T14:26:26Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/22965
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-763
dc.description.abstract
Background: Protein concentration and quality in cat food can vary considerably, and the impact on feline urine composition and nutrient supply is of high practical relevance. In the present study, 6 canned diets with varying protein concentrations and qualities were fed to 10 healthy adult cats. Protein quality in the diet differed depending on the amount of collagen-rich ingredients. Hydroxyproline concentrations were 2.56–4.45 g/kg dry matter in the high quality and 3.76–9.44 g/kg dry matter in the low quality diets. Protein levels were 36.2, 43.3 and 54.9% in the high quality and 36.7, 45.0 and 56.1% in the low quality groups. Each diet was fed for 6 weeks, using a randomized cross-over design. In the last 2 weeks of each feeding period, urine and faeces of the cats were collected.
Results: Renal calcium (Ca), oxalate (Ox) and citrate excretion were unaffected by the dietary protein concentration, possibly mediated by a high urine volume (24.2–34.2 ml/kg bodyweight (BW)/day) in all groups. However, renal Ox excretion was lower when the high quality diets were fed (P = 0.013). Urinary relative supersaturation (RSS) with calcium oxalate (CaOx) was low in general, but reduced in the high quality groups (P = 0.031). Urinary RSS values for magnesium ammonium phosphate (MAP) were high (2.64–5.00) among all groups. Apparent digestibility of crude protein and most minerals was unaffected by the different diets. Feed intake was higher in the low quality groups (P = 0.026), but BW of the cats did not differ depending on dietary protein quality. BW of the cats increased with increasing dietary protein concentrations (P = 0.003).
Conclusion: In conclusion, a high protein canned diet might not be a specific risk factor for CaOx urolith formation in cats. In contrast, all diets resulted in high RSS MAP values, which might be critical concerning MAP crystallization. Protein quality had a minor, but significant impact on urine composition, necessitating further research on this subject. A lower energy supply when feeding a low protein quality can be assumed. Changes in BW were only small and require a careful interpretation.
en
dc.format.extent
12 Seiten
de
dc.rights.uri
https://creativecommons.org/licenses/by/4.0/
de
dc.subject
Dietary protein concentration
en
dc.subject
Dietary protein quality
en
dc.subject
Apparent digestibility
en
dc.subject.ddc
600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::636 Viehwirtschaft
de
dc.title
Influence of protein concentration and quality in a canned diet on urine composition, apparent nutrient digestibility and energy supply in adult cats
de
dc.type
Wissenschaftlicher Artikel
de
dcterms.bibliographicCitation.doi
10.1186/s12917-018-1517-x
dcterms.bibliographicCitation.journaltitle
BMC Veterinary Research
dcterms.bibliographicCitation.volume
14
dcterms.bibliographicCitation.url
https://doi.org/10.1186/s12917-018-1517-x
de
refubium.affiliation
Veterinärmedizin
de
refubium.affiliation.other
Institut für Tierernährung

de
refubium.note.author
Der Artikel wurde in einer reinen Open-Access-Zeitschrift publiziert.
de
refubium.resourceType.isindependentpub
no
de
dcterms.accessRights.openaire
open access
dcterms.isPartOf.issn
1746-6148