The effect of genotype and lactation on yield and physicochemical properties of ewe milk
Uticaj genotipa i perioda laktacije na količinu, fizičke i hemijske osobine ovčijeg mleka

2014
Authors
Ilić, Zoran Z.Jevtić-Vukmirović, A.
Caro Petrović, Violeta

Petrović, Milan P.
Petrović, Milan M.
Ristanović, B.
Stolić, N.
Article (Published version)
Metadata
Show full item recordAbstract
Two genotype of sheep have been utilized in the conduct of the experiment composed of 60 ewes from Pirot x Virtemberg as genotype 1 and 60 ewes of Improved Pirot as genotype 2. All the ewes were reared under identical conditions and without any differences in nutrition and management during the whole period under study. The collection of Milk sampling was done in morning and evening during periods (1, 2, 3) of lactation duration. The average lactation duration and average total milk of the two genotypes were very close and has a minimal difference of 0.467 day and 1.562 kg, in favor of genotype 2. The differences between genotypes were not significant (P>0,05). Regarding physical and chemical properties of milk for both genotypes, the difference were very minimal such as follows; viscosity Pa x s - 0.006, electrical conductivity Ω - 0.018, density kg/m3 -0,001, freezing, t 0C - 0.013, LD number - 0.028 total solids, % - 0.014, fat,% - 0,026, protein,% - 0.085, lactose,% - 0.038, ash,% ...- 0,021, acidity, 0SH - 0.209. The results indicated that the properties of milk for both genotypes were very near to each other. It can be interpreted that the breeds utilized in the experiment were comparable due to similar characteristics perhaps. The effect of genotype was very significant only for the % protein of the milk. The lactation periods were highly significant in all physical and chemical properties of milk.
Istraživanja su obavljena kod dve rase ovaca i to 60 grla Pirotska x Virtemberg kao genotip 1 i 60 ovaca pirotske oplemenjene populacije, kao genotip 2. Sve životinje su držane u istim proizvodnim uslovima na farmi u Vrnjačkoj Banji. Prosečne vrednosti trajanja laktacije i mleka dobijenog u periodu laktacije su bile vrlo ujednačene, tako da nije utvrđen uticaj genotipa na ova svojstva. Takođe, razlike između fizičko hemijskih osobina mleka, u većini slučajeva su bile nesignifikantne. Uticaj genotipa kao fiksnog faktora je bio vrlo signifikantan samo kod sadržaja proteina u mleku ovaca (P (lt) 0.01). Međutim utvrđeno je da period laktacije ima vrlo signifikantan uticaj na sva posmatrana fizička i hemijska svojstva mleka.
Keywords:
sheep milk / genotype / lactation / physical / chemical propertiesSource:
Biotechnology in Animal Husbandry, 2014, 30, 3, 445-456Publisher:
- Institute for Animal Husbandry, Belgrade
Funding / projects:
- An Environmental Approach and the Adoption of Modern Biotechnologies as a Basis for Improvement of Ruminant Breeding Technology (RS-31001)
- Implementation of new biotechnological solution in breeding of cattle, sheep and goats for the purpose of obtaining biologically valuable and safe food (RS-31053)
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Institution/Community
RIStocarTY - JOUR AU - Ilić, Zoran Z. AU - Jevtić-Vukmirović, A. AU - Caro Petrović, Violeta AU - Petrović, Milan P. AU - Petrović, Milan M. AU - Ristanović, B. AU - Stolić, N. PY - 2014 UR - http://r.istocar.bg.ac.rs/handle/123456789/429 AB - Two genotype of sheep have been utilized in the conduct of the experiment composed of 60 ewes from Pirot x Virtemberg as genotype 1 and 60 ewes of Improved Pirot as genotype 2. All the ewes were reared under identical conditions and without any differences in nutrition and management during the whole period under study. The collection of Milk sampling was done in morning and evening during periods (1, 2, 3) of lactation duration. The average lactation duration and average total milk of the two genotypes were very close and has a minimal difference of 0.467 day and 1.562 kg, in favor of genotype 2. The differences between genotypes were not significant (P>0,05). Regarding physical and chemical properties of milk for both genotypes, the difference were very minimal such as follows; viscosity Pa x s - 0.006, electrical conductivity Ω - 0.018, density kg/m3 -0,001, freezing, t 0C - 0.013, LD number - 0.028 total solids, % - 0.014, fat,% - 0,026, protein,% - 0.085, lactose,% - 0.038, ash,% - 0,021, acidity, 0SH - 0.209. The results indicated that the properties of milk for both genotypes were very near to each other. It can be interpreted that the breeds utilized in the experiment were comparable due to similar characteristics perhaps. The effect of genotype was very significant only for the % protein of the milk. The lactation periods were highly significant in all physical and chemical properties of milk. AB - Istraživanja su obavljena kod dve rase ovaca i to 60 grla Pirotska x Virtemberg kao genotip 1 i 60 ovaca pirotske oplemenjene populacije, kao genotip 2. Sve životinje su držane u istim proizvodnim uslovima na farmi u Vrnjačkoj Banji. Prosečne vrednosti trajanja laktacije i mleka dobijenog u periodu laktacije su bile vrlo ujednačene, tako da nije utvrđen uticaj genotipa na ova svojstva. Takođe, razlike između fizičko hemijskih osobina mleka, u većini slučajeva su bile nesignifikantne. Uticaj genotipa kao fiksnog faktora je bio vrlo signifikantan samo kod sadržaja proteina u mleku ovaca (P (lt) 0.01). Međutim utvrđeno je da period laktacije ima vrlo signifikantan uticaj na sva posmatrana fizička i hemijska svojstva mleka. PB - Institute for Animal Husbandry, Belgrade T2 - Biotechnology in Animal Husbandry T1 - The effect of genotype and lactation on yield and physicochemical properties of ewe milk T1 - Uticaj genotipa i perioda laktacije na količinu, fizičke i hemijske osobine ovčijeg mleka VL - 30 IS - 3 SP - 445 EP - 456 DO - 10.2298/BAH1403445I ER -
@article{ author = "Ilić, Zoran Z. and Jevtić-Vukmirović, A. and Caro Petrović, Violeta and Petrović, Milan P. and Petrović, Milan M. and Ristanović, B. and Stolić, N.", year = "2014", abstract = "Two genotype of sheep have been utilized in the conduct of the experiment composed of 60 ewes from Pirot x Virtemberg as genotype 1 and 60 ewes of Improved Pirot as genotype 2. All the ewes were reared under identical conditions and without any differences in nutrition and management during the whole period under study. The collection of Milk sampling was done in morning and evening during periods (1, 2, 3) of lactation duration. The average lactation duration and average total milk of the two genotypes were very close and has a minimal difference of 0.467 day and 1.562 kg, in favor of genotype 2. The differences between genotypes were not significant (P>0,05). Regarding physical and chemical properties of milk for both genotypes, the difference were very minimal such as follows; viscosity Pa x s - 0.006, electrical conductivity Ω - 0.018, density kg/m3 -0,001, freezing, t 0C - 0.013, LD number - 0.028 total solids, % - 0.014, fat,% - 0,026, protein,% - 0.085, lactose,% - 0.038, ash,% - 0,021, acidity, 0SH - 0.209. The results indicated that the properties of milk for both genotypes were very near to each other. It can be interpreted that the breeds utilized in the experiment were comparable due to similar characteristics perhaps. The effect of genotype was very significant only for the % protein of the milk. The lactation periods were highly significant in all physical and chemical properties of milk., Istraživanja su obavljena kod dve rase ovaca i to 60 grla Pirotska x Virtemberg kao genotip 1 i 60 ovaca pirotske oplemenjene populacije, kao genotip 2. Sve životinje su držane u istim proizvodnim uslovima na farmi u Vrnjačkoj Banji. Prosečne vrednosti trajanja laktacije i mleka dobijenog u periodu laktacije su bile vrlo ujednačene, tako da nije utvrđen uticaj genotipa na ova svojstva. Takođe, razlike između fizičko hemijskih osobina mleka, u većini slučajeva su bile nesignifikantne. Uticaj genotipa kao fiksnog faktora je bio vrlo signifikantan samo kod sadržaja proteina u mleku ovaca (P (lt) 0.01). Međutim utvrđeno je da period laktacije ima vrlo signifikantan uticaj na sva posmatrana fizička i hemijska svojstva mleka.", publisher = "Institute for Animal Husbandry, Belgrade", journal = "Biotechnology in Animal Husbandry", title = "The effect of genotype and lactation on yield and physicochemical properties of ewe milk, Uticaj genotipa i perioda laktacije na količinu, fizičke i hemijske osobine ovčijeg mleka", volume = "30", number = "3", pages = "445-456", doi = "10.2298/BAH1403445I" }
Ilić, Z. Z., Jevtić-Vukmirović, A., Caro Petrović, V., Petrović, M. P., Petrović, M. M., Ristanović, B.,& Stolić, N.. (2014). The effect of genotype and lactation on yield and physicochemical properties of ewe milk. in Biotechnology in Animal Husbandry Institute for Animal Husbandry, Belgrade., 30(3), 445-456. https://doi.org/10.2298/BAH1403445I
Ilić ZZ, Jevtić-Vukmirović A, Caro Petrović V, Petrović MP, Petrović MM, Ristanović B, Stolić N. The effect of genotype and lactation on yield and physicochemical properties of ewe milk. in Biotechnology in Animal Husbandry. 2014;30(3):445-456. doi:10.2298/BAH1403445I .
Ilić, Zoran Z., Jevtić-Vukmirović, A., Caro Petrović, Violeta, Petrović, Milan P., Petrović, Milan M., Ristanović, B., Stolić, N., "The effect of genotype and lactation on yield and physicochemical properties of ewe milk" in Biotechnology in Animal Husbandry, 30, no. 3 (2014):445-456, https://doi.org/10.2298/BAH1403445I . .