Dietary polymer-coated urea enhances the goats lactational performance, excretion of microbial purine derivatives and blood metabolites in the semi-arid zone of Iran

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dc.creatorMitra Mazinani
dc.creatorAbbas Ali Naserian
dc.creatorMohsen Danesh Mesgaran
dc.creatorReza Valizadeh
dc.creatorAbdelfattah Z.M. Salem
dc.date2023
dc.date.accessioned2026-07-07T03:58:15Z
dc.descriptionThis study aimed to determine the effect of using different sources of nitrogen to supply part of degradable intake protein needs in lactating goat performance and its effect on excretion of microbial purine derivatives and blood metabolites. Thirty-two lactating Saanen goats (body weight 38.85 ± 2.14 kg and 1979 ± 0.25 g day-1 milk yield) were used in a one-way ANOVA completely randomized design. Goats were assigned to the following treatments for a 10-wk experimental period: 1) Control (canola meal as a nitrogen source); 2) Urea (0.5% urea); 3) Optigen (0.55% Optigen- Alltech. Inc., Lexington, KY) and 4) Polymer-Coated Urea (PCU- international patent number: A01K5/00, 0.7% PCU) based on dry mater intake. Non-protein nitrogen groups had a comparative effect (p > 0.05) between control and other treatments on milk composition, microbial protein synthesis and they affected on blood factors including urea, cholesterol, and ALT. Dry matter intake decreased (p > 0.05) in PCU, Optigen, Urea than Control goats. Synthesis of microbial protein in PCU goats was 22.5 g day-1 and it was greater (p > 0.05) than other treatments. Plasma cholesterol was increased in PCU and Optigen, whereas urea concentration was increased in Urea and Control goats. Milk production was higher in PCU than Urea and Control. Feed conversion ratio was improved (p > 0.05) in PCU and Optigen goats versus other treatments. This study demonstrated that polymer-coated urea can be utilized as a nitrogen source and improve goats milk performance.
dc.formatapplication/pdf
dc.identifier1806-2636
dc.identifierhttps://www.redalyc.org/articulo.oa?id=303175504020
dc.identifierhttps://www.redalyc.org/journal/3031/303175504020/
dc.identifierhttps://www.redalyc.org/journal/3031/303175504020/html/
dc.identifierhttps://www.redalyc.org/journal/3031/303175504020/303175504020.epub
dc.identifierhttps://www.redalyc.org/journal/3031/303175504020/movil
dc.identifierhttps://doi.org/10.4025/actascianimsci.v45i1.58041
dc.identifier.urihttp://hdl.handle.net/123456789/449020
dc.languageen
dc.publisherUniversidade Estadual de Maringá
dc.relationhttp://www.redalyc.org/revista.oa?id=3031
dc.rightsActa Scientiarum. Animal Sciences
dc.sourceActa Scientiarum. Animal Sciences (Brasil) Vol.45
dc.subjectAgrociencias
dc.titleDietary polymer-coated urea enhances the goats lactational performance, excretion of microbial purine derivatives and blood metabolites in the semi-arid zone of Iran
dc.typeartículo científico

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Acta Scientiarum. Animal Sciences - Universidade Estadual de Maringá