<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>It was studied the main indicators of the functionality of reproductive system and their interrelation with the productivity indices of imported cows populations Holstein breed, belonging to 3 ecological types: the Dutch, the French and the German and our indigenous Moldovian type Black-Motley breed. The service period, was the shortest in cows of Moldovian type of Black-Motley breed with 38.1 days (P˂0.001), 30.2 days (P˂0.001) and by 14.5 days (P˂0.01.), compared to the Holstein German, Dutch and French ecological types, respectively. The difference of the duration of calvings interval between indigenous population and French ecological type was 18.2 days (p&lt;0.01), compared to the German 46 days (P&lt;0.001) and to the Dutch 36,5 days (P&lt;0.001). There has been a difference of 9,9% in birth coefficient, between Moldovian type and Holstein German ecological type (p˂0.05). The best result of the coefficient of reproductive capacity has the indigenous type, opposite of German ecological type, which has the lowest performance (P˂0.001). Between the service period and the productivity indicators of the milk, regardless of the origin of the animal populations, were predominantly established, authentic positive correlative interrelationships, from weak to strong and statistically negative between productivity indices and the coefficient of the reproductive capacity of cows.</p>
</abstract>

It was studied the main indicators of the functionality of reproductive system and their interrelation with the productivity indices of imported cows populations Holstein breed, belonging to 3 ecological types: the Dutch, the French and the German and our indigenous Moldovian type Black-Motley breed. The service period, was the shortest in cows of Moldovian type of Black-Motley breed with 38.1 days (P˂0.001), 30.2 days (P˂0.001) and by 14.5 days (P˂0.01.), compared to the Holstein German, Dutch and French ecological types, respectively. The difference of the duration of calvings interval between indigenous population and French ecological type was 18.2 days (p<0.01), compared to the German 46 days (P<0.001) and to the Dutch 36,5 days (P<0.001). There has been a difference of 9,9% in birth coefficient, between Moldovian type and Holstein German ecological type (p˂0.05). The best result of the coefficient of reproductive capacity has the indigenous type, opposite of German ecological type, which has the lowest performance (P˂0.001). Between the service period and the productivity indicators of the milk, regardless of the origin of the animal populations, were predominantly established, authentic positive correlative interrelationships, from weak to strong and statistically negative between productivity indices and the coefficient of the reproductive capacity of cows.

Reproductive performance of cows of different ecotypes of black-and-white breeds

Archiva Zootechnica

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

{"article-title":"Reproductive performance of cows of different ecotypes of black-and-white breeds"}

It was studied the main indicators of the functionality of reproductive system and their interrelation with the productivity indices of imported cows...

Reproductive performance of cows of different ecotypes of black-and-white breeds

Publié en ligne: 27 mai 2023

Pages: 90 - 102

DOI: https://doi.org/10.2478/azibna-2023-0006

Mots clés
correlation, cows, ecological types, milk productivity, reproductive indices

© 2023 Vera Granaci et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Reproductive performance of cows of different ecotypes of black-and-white breeds

Publié en ligne: 27 mai 2023

Pages: 90 - 102

DOI: https://doi.org/10.2478/azibna-2023-0006

Mots cléscorrelation, cows, ecological types, milk productivity, reproductive indices

© 2023 Vera Granaci et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Mots clés
correlation, cows, ecological types, milk productivity, reproductive indices