Agrarian Science and Food Technologies

Polishchuk T.V., Сandidate of Аgricultural Science, Associate Professor

Vinnitsia National Agrarian University

Studies have shown that the correlation between milk productivity indicators fluctuates widely due to breed differences as well as external conditions (feeding, keeping, care). This analysis makes it possible to objectively determine the breed characteristics of productivity development and their variability. The existence of a positive correlation between these characteristics and milk yield will make it possible to ensure an effective breeding through the selection of animals by their productivity indicators.

The daily milk yield in the cows of Ukrainian black-speckled dairy breed  was by 6.5% (P> 0.999) higher than the same indicator in the cows of Ukrainian red-speckled dairy breed. The milk fat content was at the same level, no significant difference was determined.

The variability indicators in the cows of Ukrainian black-speckled dairy breed were higher in comparison with those in the cows of Ukrainian red-speckled dairy breed making it probable to determine and select better animals more effectively.

The cows of both breeds were characterized by high lactation stability, although this indicator in the cows of Ukrainian black-speckled dairy breed was 98.9%, which was by 3.6% (P≥0.95) higher than the same indicator in the cows of Ukrainian red-speckled dairy breed. The phenotypic variability of the lactation stability coefficient was by 6.2% higher in the cows of Ukrainian black-speckled dairy breed.

The high and direct correlation was determined between lactation duration and milk yield, while the average and direct correlation was between lactation duration, milk fat content and milk protein content. The inverse and low correlation was determined between milk fat content, while the direct and low correlation was between milk protein content, indicating the impact of other factors, such as heredity, level of feeding and the diet composition, on these characteristics.

The average and inverse correlation (P≥0.999) was determined between cow milk yield, fat content and protein content, while the average and direct correlation (P≥0.999) was between cow milk yield, milk fat content and milk protein content.

1. Vatskyi V.F. & Velychko S.A. (2012). Molochna produktyvnist koriv ukrainskoi chervono-riaboi molochnoi porody zalezhno vid yikh vidtvoriuvalnoi zdatnosti [Milk productivity of the cows of Ukrainian black-speckled dairy breed depending on their reproductive capacity]. Visnyk Poltavskoi derzhavnoi ahrarnoi akademii – Bulletin of Poltava State Agrarian Academy, № 2, S. 118-122.

2. Harmash O.I. (2013). Vzaiemozviazok mizh produktyvnistiu ta vidtvoriuvalnoiu zdatnistiu u koriv chervonoi molochnoi porody [Correlation between productivity and reproductive capacity in the cows of red dairy breed]. Bioresursy i pryrodokorystuvannia – Bioresources and environmental management, T. 5, № 3-4, S. 100-106.

3. Kalynka A.K. & Lesyk O.B. & Kazmiruk L.V. (2018). Stvoriuvana bukovynska porodna hrupa chervono-riaboi molochnoi khudoby novoi populiatsii na molochnykh fermakh Bukovyny [Bukovyna breed group of red-speckled dairy cattle of a new population on Bukovyna dairy farms]. Tavriiskyi naukovyi visnyk – Tavriya scientific bulletin, S. 100-110.

4. Kilkist silskohospodarskykh tvaryn na 01 zhovtnia 2019 roku [The number of farm animals on October 1, 2019.]. Derzhavna sluzhba statystyky Ukrainy – State Statistics Service of Ukraine. Rezhym dostupu: http://www.ukrstat.gov.ua/operativ/operativ2019/ sg/ksgt/arh_ksgt2019_u.html.

5. Kozyr V.S. & Movchan T.V. (2011). Dynamika pokaznykiv spadkovosti hospodarskykh oznak u koriv riznykh hrup v zalezhnosti vid henotypu ta henealohii [Dynamics of economic characteristics heredity indicators in the cows of different groups depending on genotype and genealogy]. Naukovyi visnyk Askaniia-Nova – Scientific Bulletin «Askania-Nova», S. 91-95.

6. Kuziv M.I. & Fedorovych Ye.I. & Kuziv N.M. (2017). Zviazok zhyvoi masy koriv ukrainskoi chorno-riaboi molochnoi porody z yikh molochnoiu produktyvnistiu [Correlation of live weight of Ukrainian black-speckled dairy cows with their milk productivity]. Visnyk Sumskoho natsionalnoho ahrarnoho universytetu – Bulletin of Sumy National Agrarian University, Vyp. 5/1 (31), S. 96-101.

7. Mandryk M.O. & Bihas O.V.& Moskalenko O.A. (2011). Molochna produktyvnist ta khimichnyi sklad moloka koriv symentalskoi ta chorno-riaboi porid v zalezhnosti vid hodivli [Milk productivity and chemical composition of milk in the cows of Simmental and black-speckled breeds depending on feeding]. Zbirnyk naukovykh prats VNAU – Collection of scientific papers of VNAU, № 6 (46), S. 44-48.

8. Nadkhodzhennia moloka na pererobni pidpryiemstva za 9 misiatsiv 2019 r. [Milk supply to processing enterprises for 9 months in 2019]. Derzhavna sluzhba statystyky Ukrainy – State Statistics Service of Ukraine. Rezhym dostupu: http://www.ukrstat.gov.ua/ operativ/operativ2019/sg/nmpp/arh_nmpp_u.html.

9. Omelkovych S.P. (2014). Molochna produktyvnist ta vidtvorna zdatnist koriv ukrainskoi chorno-riaboi molochnoi porody riznykh henotypiv [Milk productivity and reproductive capacity in the cows of Ukrainian black-speckled dairy breed of different genotypes]. Zbirnyk naukovykh prats Vinnytskoho natsionalnoho ahrarnoho universytetu – Collection of scientific papers of Vinnytsia National Agrarian University, №1, S. 159–164.

10. Pavliv B.A. & Shcherbatyi Z.Ie. & Pankiv I.Ia. [ta in.] (2003). Osoblyvosti proiavlennia molochnoi produktyvnosti v koriv ukrainskoi chorno-riaboi molochnoi porody z riznoiu chastkoiu spadkovosti za holshtynamy [Peculiarities of milk productivity in the cows of Ukrainian black-speckled dairy breed with different proportion of heredity from Holstein breed]. Naukovyi visnyk Lvivskoi derzhavnoi akademii veterynarnoi medytsyny im. S.Z. Gzhytskoho – Scientific Bulletin of Lviv National University of Veterinary Medicine and Biotechnology named after S. Gzhytskyi, Vyp.1, S. 91–95.

11. Petrenko I.P. & Biriukova O.D. & Kruhliak T.O. & Kruhliak A.P. (2012). Koreliatsiini zviazky mizh pokaznykamy produktyvnosti ta pleminnoi tsinnosti tvaryn holshtynskoi porody [Correlation between the indicators of productivity and breeding value in the animals of Holstein breed]. Rozvedennia i henetyka tvaryn  – Breeding and genetics of animals, Vyp. 46, S. 85-86.

12. Poslavska Yu.V. & Fedorovych Ye.I. & Babik N.P. (2015). Vplyv sezonu narodzhennia ta sezonu otelennia koriv na yikh molochnu produktyvnist [Influence of the cows’ birthing

and calving season on their milk productivity]. Naukovyi visnyk Lvivskoi derzhavnoi akademii veterynarnoi medytsyny imeni S.Z. Gzhytskoho  – Scientific Bulletin of Lviv National University of Veterinary Medicine and Biotechnology named after S. Gzhytskyi, № 3 (63), Tom 17, S. 297-300.

13. Stavetska R.V. & Dynko Yu.P. (2016). Spivvidnosna minlyvist molochnoi produktyvnosti ta promiriv tila pervistok ukrainskoi chorno-riaboi molochnoi porody [The relative variability of milk productivity and body measurements in the first calving cows of the Ukrainian black-speckled dairy breed.]. Tekhnolohiia vyrobnytstva i pererobky produktsii tvarynnytstva – Technology of production and processing of livestock products, № 1, S. 108-114.

14. Stavetska R.V. & Dynko Yu.P. (2016). Spivvidnosna minlyvist molochnoi produktyvnosti ta promiriv tila pervistok ukrainskoi chorno-riaboi molochnoi porody [The relative variability of milk productivity and body measurements in the first calving cows of the Ukrainian black-speckled dairy breed]. Tekhnolohiia vyrobnytstva i pererobky produktsii tvarynnytstva – Tekhnolohiia vyrobnytstva i pererobky produktsii tvarynnytstva, № 1, S. 108-114.

15. Shcherbatyi Z.Ie. & Bodnar P.V. & Kropyvka Yu.H. (2017). Molochna produktyvnist ta vidtvorna zdatnist koriv ukrainskoi chorno-riaboi molochnoi porody riznykh typiv konstytutsii [Milk productivity and reproductive capacity in the cows of Ukrainian black-speckled dairy breed of different constitution types]. Naukovyi visnyk Lvivskoho natsionalnoho universytetu veterynarnoi medytsyny ta biotekhnolohii imeni S.Z. Gzhytskoho – Scientific Bulletin of Lviv National University of Veterinary Medicine and Biotechnology named after S. Gzhytskyi, №74, S. 182–187.