ASSESSMENT OF THE INFLUENCE OF AGE AND BODY WEIGHT AT THE FIRST MATING ON THE FUTURE PRODUCTIVITY OF COWS

V A PLESHKOV; R O KASYANOV; O V SMOLOVSKAYA

UDC 636.2

ASSESSMENT OF THE INFLUENCE OF AGE AND BODY WEIGHT AT THE FIRST MATING ON THE FUTURE PRODUCTIVITY OF COWS

Published in Vestnik of Omsk SAU · Volume 53, Issue 1 · Pages 107–114 · Rubric: VETERINARY AND ZOOTECHNY

EDN: EHKIWU

Received: 06.03.2024 Accepted: 15.03.2024 Published: 25.03.2024

Authors

V A PLESHKOV

R O KASYANOV

O V SMOLOVSKAYA

V A PLESHKOV

Kemerovo State University

R O KASYANOV

Kemerovo State University

O V SMOLOVSKAYA

Kemerovo State University

ABSTRACT

The aim of the study was to evaluate the effect of moderate-early mating on the performance and reproductive functions of cows later in life weight and age at insemination. Four groups of heifers were selected for the experiment, taking into account their age and live weight at the time of insemination. The results of the study showed that age and live weight of heifers at the time of first insemination influenced milk productivity. The difference for 100 days of lactation between 1 and 2 groups averaged 49 liters of milk per head, between 3 and 4 groups - 62 liters of milk. Higher fat-milk yield is observed in animals with higher live weight (groups 2 and 4). The difference in 1 and 2 groups was 1.94%, and in 3 and 4 groups - 0.55%. It was found that calves from heifers with higher live weight at the first mating were born larger. The difference in live weight at the end of the period between groups 1 and 2 of calves was 9.4 kilograms, and between groups 3 and 4 - 9.6 kilograms. During the study period, postpartum complications and diseases were practically not observed in first calves of groups 2 and 4: 1 case was observed in group 2, and 2 cases of diseases were observed in group 4. Also, the duration of service period in them was normal and amounted to 66 days in group 2 and 63 days in group 4. In contrast, 7 cases of postpartum retention (3 cases in group 1 and 4 cases in group 3) and a longer service period were observed among animals of groups 1 and 3. The obtained data may have important practical value for optimization of calving process and increase of milk productivity of cows.

KEYWORDS

first heifers, live weight, age, insemination, productive indices

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Editor-in-chief

Oksana Shumakova

responsible secretary

Elena Rodomazova

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GOST

PLESHKOV V. A., KASYANOV R. O., SMOLOVSKAYA O. V. ASSESSMENT OF THE INFLUENCE OF AGE AND BODY WEIGHT AT THE FIRST MATING ON THE FUTURE PRODUCTIVITY OF COWS // Vestnik of Omsk SAU. 2024. no. 1. pp. 107-114. URL: https://vestnik.omgau.ru/en/nauka/publications/article/6a9c167c32807fdbab87603d/assessment-of-the-influence-of-age-and-body-weight-at-the-first-mating-on-the-future-productivity-of-cows/view. EDN: EHKIWU. (Date of access 02.10.2026).

MLA

V A PLESHKOV, KASYANOV R. O., SMOLOVSKAYA O. V.. "ASSESSMENT OF THE INFLUENCE OF AGE AND BODY WEIGHT AT THE FIRST MATING ON THE FUTURE PRODUCTIVITY OF COWS." Vestnik of Omsk SAU 53.1 (2024): 107-114. URL: https://vestnik.omgau.ru/en/nauka/publications/article/6a9c167c32807fdbab87603d/assessment-of-the-influence-of-age-and-body-weight-at-the-first-mating-on-the-future-productivity-of-cows/view. EDN: EHKIWU.

APA

PLESHKOV V. A., KASYANOV R. O., SMOLOVSKAYA O. V. (2024). ASSESSMENT OF THE INFLUENCE OF AGE AND BODY WEIGHT AT THE FIRST MATING ON THE FUTURE PRODUCTIVITY OF COWS. Vestnik of Omsk SAU, 53(1), 107-114. URL: https://vestnik.omgau.ru/en/nauka/publications/article/6a9c167c32807fdbab87603d/assessment-of-the-influence-of-age-and-body-weight-at-the-first-mating-on-the-future-productivity-of-cows/view EDN: EHKIWU.

Chicago

V A PLESHKOV, KASYANOV R. O., SMOLOVSKAYA O. V.. "ASSESSMENT OF THE INFLUENCE OF AGE AND BODY WEIGHT AT THE FIRST MATING ON THE FUTURE PRODUCTIVITY OF COWS." Vestnik of Omsk SAU 53, no. 1 (2024): 107-114. URL: https://vestnik.omgau.ru/en/nauka/publications/article/6a9c167c32807fdbab87603d/assessment-of-the-influence-of-age-and-body-weight-at-the-first-mating-on-the-future-productivity-of-cows/view. EDN: EHKIWU.

WIKI

{{cite journal | author = PLESHKOV V. A., KASYANOV R. O., SMOLOVSKAYA O. V. | title = ASSESSMENT OF THE INFLUENCE OF AGE AND BODY WEIGHT AT THE FIRST MATING ON THE FUTURE PRODUCTIVITY OF COWS | journal = Vestnik of Omsk SAU | year = 2024 | volume = 53 | issue = 1 | pages = 107-114 | url = https://vestnik.omgau.ru/en/nauka/publications/article/6a9c167c32807fdbab87603d/assessment-of-the-influence-of-age-and-body-weight-at-the-first-mating-on-the-future-productivity-of-cows/view }} EDN: EHKIWU

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