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Influence of altitude and lactation period on composition and physical properties of milk in crossbred Sharri sheep

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dc.contributor.authorRamadani, Xh.
dc.contributor.authorKryeziu, A.
dc.contributor.authorKamberi, M.
dc.contributor.authorZogaj, M.
dc.date.accessioned2023-07-04T07:39:41Z
dc.date.available2023-07-04T07:39:41Z
dc.date.issued2023
dc.descriptionReceived: March 19th, 2023 ; Accepted: May 7th, 2023 ; Published: May 22nd, 2023 ; Correspondence: alltane.kryeziu@uni-pr.edueng
dc.description.abstractThe aim of this study was to compare the changes in chemical composition and physical properties of raw milk from crossbred ‘Sharri’ sheep as a function of altitude (1,200 m - variant A and 1,600 m - variant B) and lactation period. Milk composition (total solids - TS, milk fat–MF, solids non-fat-SNF, protein - P, lactose - L, ash, freezing point - FP, titratable acidity - TA, active acidity - AA, and density - D) were analysed once per month during the period of June, July, August, and September of 2021. Sheep milk at 1,600 m altitude showed significantly higher values (P < 0.05) for all analysed parameters and lower values for FP compared to milk from 1,200 m altitude, except SNF, FP and AA, which were not statistically significant. The analysed milk during the four months of lactation period has significantly increased (P < 0.05) in TS (from 15.65 to 25.46%); MF (6.49 to 10.80%); SNF (9.16 to 14.66%); P (4.46 to 6.94%); L (3.96 to 6.52%); ash (0.74 to 1.20%); TA (9.90 to 14.53 °SH); whereas changes in FP value (-0.611 to -0.709 °C), AA (6.68 to 6.76) and D (1.035 to 1.053 g cm-3 ), have been statistically non-significant. The interactions between altitude*lactation period on milk composition (TS, MF, SNF, P, L, ash) of crossbred ‘Sharri’ sheep and physical properties (FP, TA, AA and D) were nonsignificant.eng
dc.identifier.issn2228-4907
dc.identifier.publicationAgronomy Research, 2023, vol. 21, no. 3, pp. 1278–1292eng
dc.identifier.urihttp://hdl.handle.net/10492/8537
dc.identifier.urihttps://doi.org/10.15159/ar.23.044
dc.publisherEstonian University of Life Scienceseng
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)eng
dc.rightsinfo:eu-repo/semantics/openAccesseng
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectaltitudeeng
dc.subjectcrossbred ‘Sharri’ sheepeng
dc.subjectlactation periodeng
dc.subjectmilk compositioneng
dc.subjectphysical propertieseng
dc.subjectarticleseng
dc.titleInfluence of altitude and lactation period on composition and physical properties of milk in crossbred Sharri sheepeng
dc.typeinfo:eu-repo/semantics/articleeng

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2023, Vol. 21, No. 3