Naslov
Effect of dietary clinoptilolite supplementation on somatic cell counts, udder health and chemical composition of milk in Holstein-Frisian cows

Autori
Samardžija, Marko ; Đuričić, Dražen ; Benić, Miroslav ; Maćešić, Nino ; Valpotić, Hrvoje ; Gračner, Damjan ; Starič, Jože ; Cvetnić, Luka ; Folnožić, Ivan

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
27th International Congress of the Hungarian Association for Buiatrics / Szenci, Otto ; Brydl, Endre - Budimpešta : Hungarian Association for Buiatrics, 2017, 232-233

ISBN
978-963-87942-9-1

Skup
27th International Congress of the Hungarian Association for Buiatrics

Mjesto i datum
Hévíz, Mađarska, 15.11.2017. - 18.11.2017

Vrsta sudjelovanja
Pozvano predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
clinoptilolite ; cows ; intramammary infections ; milk composition ; somatic cells

Sažetak
The objective. The aim of this study was to determine the effects of dietary zeolite clinoptilolite (CPL) on somatic cell counts (SCC), udder health and chemical composition of milk in Holstein-Frisian cows. Materials and methods. Thirty cows aged from 3 to 6 years, which were pregnant for 3 months and kept at a small-scale farm in northwestern Croatia, were included in the study. The cows were randomly assigned into two groups, control (n=15) and CPL-fed group (n=15). The latter group was fed twice a day with the addition of 50 g CPL in concentrate for dairy cows. The first milk sampling was performed prior to adding CPL to the diet. Three more samplings were performed on a monthly basis up to 6th month of pregnancy. The milk samples were analysed for chemical composition (milk fat, proteins, lactose, solids non-fat content and urea), SCC and by bacteriological examination. Results. The milk ingredients tested did not differ significantly in any of samplings or between the groups, though the chemical composition of milk was found to be more stable in CPL-fed cows. Significant differences between single samplings in CPL-fed cows were established in milk fat and urea content (P˂0.05). The SCC in milk did not differ significantly between groups. The cows from the control group had a 10.5-time higher risk of intramammary infections than CPL-fed cows. Conclusion. This beneficial outcome of our study could be ascribed to the antibacterial, detoxifying, antioxidative and immunostimulating effects of CPL in supplemented cows, which was exhibited by changes in several metabolic parameters tested, and the decreased incidence of intramammary infections during the dry period, parturition and early lactation.

Izvorni jezik
Engleski

Znanstvena područja
Veterinarska medicina

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