PRODUCTIVITY OF MILK AND MILK COMPOSITION OF AN INDIGENOUS SHEEP BREED IN MACEDONIA
Journal
Biotechnology in Animal Husbandry
Date Issued
2015
Author(s)
N. Pacinovski2, V. Dzabirski3, K. Porcu3, E. Joshevska4, G. Cilev5, M. P. Petrovic6
Abstract
Abstract: Several production traits have been examined in 180
Ovchepolian sheep during a four-year production period (2010–2013). The sheep
ranged in age from the first to the 7th lactation and 4319 individual lactation
controls were realized in total. Besides the basic statistics, all data were analysed
using a multi-factorial fixed model. The influence of certain factors was studied
using the F-test and the analyses were made using the SPSS set of programs. Most
of the factors (year, lactation, lambing month and number of milk recording) had a
highly significant influence (P<0.001) on daily milk production (milk from the
morning, evening and the total amount of milk, % of milk fat and kg fat) in this
breed of sheep. The month of milk recording also had a significant influence
(P<0.05) on all traits. Only fertility had no impact on the variations in the tested
parameters, aside from the total daily milk, on which a highly significant influence
was manifested (P<0.01). The average milk lactation among the tested sheep
population during all four years was, on average, 58 ± 0.247 l, while the production
of milked milk for the same period was 37 ± 0.217 l. The length of the lactation
period in these sheep for the four years studied averaged 182 ± 0.31 days. The
maximal daily milk yield in this sheep population was measured in 2011 (0.302 ±
0.26 l). Regarding their age, the highest daily milk yield was determined in sheep
in the third lactation (0.365 ± 0.26), while those in the 7th lactation had the lowest
(0.255 ± 0.27).
Ovchepolian sheep during a four-year production period (2010–2013). The sheep
ranged in age from the first to the 7th lactation and 4319 individual lactation
controls were realized in total. Besides the basic statistics, all data were analysed
using a multi-factorial fixed model. The influence of certain factors was studied
using the F-test and the analyses were made using the SPSS set of programs. Most
of the factors (year, lactation, lambing month and number of milk recording) had a
highly significant influence (P<0.001) on daily milk production (milk from the
morning, evening and the total amount of milk, % of milk fat and kg fat) in this
breed of sheep. The month of milk recording also had a significant influence
(P<0.05) on all traits. Only fertility had no impact on the variations in the tested
parameters, aside from the total daily milk, on which a highly significant influence
was manifested (P<0.01). The average milk lactation among the tested sheep
population during all four years was, on average, 58 ± 0.247 l, while the production
of milked milk for the same period was 37 ± 0.217 l. The length of the lactation
period in these sheep for the four years studied averaged 182 ± 0.31 days. The
maximal daily milk yield in this sheep population was measured in 2011 (0.302 ±
0.26 l). Regarding their age, the highest daily milk yield was determined in sheep
in the third lactation (0.365 ± 0.26), while those in the 7th lactation had the lowest
(0.255 ± 0.27).
Subjects