Primerjava mlečnosti in sestave mleka pri pasmah koz v Sloveniji

Zalar Sterle, Kristina (author), Simčič, Mojca (mentor)

V magistrski nalogi smo naredili primerjavo količine namolzenega mleka v laktaciji in vsebnosti v mleku pri treh pasmah koz v Sloveniji (slovenska sanska koza, slovenska srnasta koza, drežniška koza). Preučevali smo tudi dejavnike, ki so vplivali na količino namolzenega mleka in na vsebnosti maščobe in beljakovin. V analizo smo vključili podatke o 47 tropih, v letih od 2005 do 2019. Povprečna količina namolzenega mleka pri vseh treh pasmah je bila 373,7 kg s 3,28 % maščobe in 3,04 % beljakovin (slovenska sanska koza 432,9 kg, 3,33 % maščobe, 2,89 % beljakovin; slovenska srnasta koza 394,3 kg, 3,28 % maščobe, 3,0 % beljakovin; drežniška koza 339,9 kg mleka, 3,67 % maščobe, 3,22 % beljakovin). Največjo količino namolzenega mleka so priredile koze v peti laktaciji. Koze s tremi kozliči v gnezdu so priredile povprečno 30 kg več namolzenega mleka kot koze z enim kozličem v gnezdu. Večjo količino namolzenega mleka so priredile koze, od katerih so mladiče zgodaj odstavili. Koze, ki so jarile v spomladanskih mesecih so imele večjo mlečnost, od koz, ki so jarile v zimskih mesecih. Največja količina namolzenega mleka je bila leta 2005, najmanjša pa leta 2011. Količina namolzenega mleka se je povečevala z dolžino laktacije. Vsebnost maščobe in beljakovin se je zmanjševala s povečevanjem količine namolzenega mleka.

• Language: Slovenian
• Keywords: koze, mlecnost, mleko, sestava, pasme, Slovenija
• Work type: Master's thesis/paper
• Organization: BF - Biotechnical Faculty
• Year: 2020
• PID: 20.500.12556/RUL-120651
• COBISS.SI-ID: 29624579
• Publication date in RUL: 24.09.2020

Secondary language

• Language: English
• Title: The comparison of milk yield and milk content of goat breeds in Slovenia

Abstract

In the master's thesis we made a comparison of total milked milk in lactation as well as fat and protein contents in milk of three breeds of goats in Slovenia (Slovenian Saanen goat, Slovenian Alpine goat, Drežnica goat). We studied effects that affected total milked milk in lactation and fat and protein contents. Data from 47 flocks in the years from 2005 to 2019 were included in the analysis. The average total milked milk of three breeds together was 373.66 kg with 3.28% fat and 3.04% proteins (Slovenian Saanen goat 432.9 kg milk, 3.33% fat, 2.89% proteins, Slovenian Alpine goat 394.3 kg milk, 3.28% fat, 3.0% proteins, Drežnica goat 339.9 kg milk, 3.67% fat, 3.22% proteins). The highest amount of total milked milk was produced by goats in the fifth lactation. Goats with three kids in the litter produced an average 30 kg more milk than goats with only one kid in the litter. Higher total milked milk was produced by goats where kids were early weaned. Goats with kidding in the spring had higher total milked milk than goats with kidding in the winter. The highest total milked milk was produced in 2005 and the lowest in 2011. Total milked milk increased with the lactation length. Fat and protein contents decreased with increasing total milked milk.

• Keywords: goats, milk yield, milk content, breeds, Slovenia