Učinkovitost korištenja bolusa na proizvodne parametre i zdravstveni status mliječnih krava

master's thesis

• Title (english): Effectiveness of using the tablet on production parameters and health status of dairy cows
• Author: Ivana Škrinjar
• Mentor: Goran Kiš (mentor)
• Committee member: Goran Kiš (predsjednik povjerenstva)
• Committee member: Kristina Kljak (član povjerenstva)
• Committee member: Antun Kostelić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Department of Animal Nutrition); Zagreb
• Defense date and country: 2022-09-28, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Uporaba bolusa s aktivnim tvarima kao alternativa korištenju antibiotika sve je češća metoda prevencije mastitisa suvremene proizvodnje mlijeka. Sporo otpuštanje aktivnih tvari omogućuje produženo djelovanje takvih preparata. Cilj ovog rada bio je utvrditi učinkovitost korištenja bolusa s bioaktivnim tvarima, niacinamid, inulin, salicin te antioksidanti gingeroli, šogaoli, zingeron, na proizvodne parametre i zdravstveni status mliječnih krava. Istraživanje je provedeno na obiteljskom gospodarstvu u središnjoj Istri. U istraživanju je sudjelovalo 20 krava podijeljenih u dvije skupine prema dobi, a svaka skupina imala je svoju kontrolnu podskupinu. Mlijeko tretiranih krava analizirano je u Središnjem laboratoriju za kontrolu kvalitete mlijeka u Križevcima svakih 15 dana kroz razdoblje od 60 dana od primjene bolusa. Utvrđena je statistička značajnost utjecaja dobi na proizvodnju mlijeka te broj somatskih stanica u mlijeku starijih krava. Broj somatskih stanica, kao pokazatelj subkliničkog mastitsa, od početka do kraja istraživanja pao je u obje ispitne skupine. Kod starijih krava pad je iznosio 76,84%, a kod mlađih 14,63 %. Dobiveni rezultati upućuju na poboljšanje zdravstvenog statusa krava te na potencijal korištenja bolusa s bioaktivnim tvarima u intenzivnoj proizvodnji mlijeka.

Abstract (english)

The use of tablets with active substances as an alternative to the use of antibiotics is an increasingly common method of preventing mastitis in modern milk production. The slow release of active substances enables prolonged action of such medicine. The aim of this master' thesis was to determine the effectiveness of using tablets with bioactive substances such as niacinamide, inulin, salicin and antioxidants gingerols, shogaols, zingerone, on production parameters and health status of dairy cows. The research was conducted on a small family farm in central Istria. In the research participated 20 cows, divided into two groups according to age, and each cow had its own control cow. The milk of the treated cows was analyzed at the Centre for Quality Control of Livestock Products Križevci every 15 days for a period of 60 days from the application of the bolus. The statistical significance of the influence of age on the production of the daily amount of milk and the number of somatic cells in the milk of older cows was determined. The number of somatic cells, as an indicator of subclinical mastitis, fell in both test groups from the beginning to the end of the study. In older cows, the decrease was 76.84%, and in younger cows, it was 14.63%. The obtained results indicate the improvement of the health status of cows and the potential of using bolus with bioactive substances in intensive milk production.

• Keywords: proizvodnja mlijeka; zdravstveni status; bolusi s bioaktivnim tvarima
• Keywords (english): milk production; health status of dairy cows; tablets with active substances
• Language: croatian
• URN:NBN: urn:nbn:hr:204:155600
• Study programme: Title: Animal Nutrition and Feed Science; Study programme type: university; Study level: graduate; Academic / professional title: magistar/ magistra inženjer/inženjerka hranidbe životinja i hrane (magistar/ magistra inženjer/inženjerka hranidbe životinja i hrane)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2022-11-03 10:14:17