Characteristics of Lactation Curve and Reproduction in Dairy Cattle

Ruban, S. Yu.; Danshyn, Viktor; Matvieiev, Мykhailo; Borshch, O. O.; Korol-Bezpala, Lesia

doi:10.11118/actaun.2022.028

Cited by 6 publications

(6 citation statements)

References 39 publications

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“…The method of variational statistics was applied based on the calculation of the arithmetic mean (M), the root-mean-square error (m) and the reliability of the difference between comparative indicators (P) and the materials of the conducted studies were processed (Ruban et al, 2020)…”

Section: Methodsmentioning

confidence: 99%

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2022

Scientific Horizons

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Журнал включено до міжнародних наукометричних баз і каталогів наукових видань: Index Copernicus; Directory of Open Access Journals (DOAJ); Open Academic Journals Index (OAJI); Google Scholar; Crossref; Національна бібліотека України імені В.І. Вернадського, AGRICOLA, CAB Abstracts and Global Health (CABI), Open Academic Journals Index, Scopus.

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Section: Methodsmentioning

confidence: 99%

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2022

Scientific Horizons

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“…This led to significant success and considerably increased milk yields and milk fat and protein, especially in Holstein cows (Guinan et al, 2023;Cole et al, 2021). These data indicate that the increase in milk production was achieved both through careful and well-organized breeding, which provided high genetic progress, as well as due to optimal conditions of nutrition, housing, and welfare of dairy cows (Berry, 2018;Ruban et al, 2022).…”

Section: Introductionmentioning

confidence: 91%

Grounding the economic selection index for evaluation and selection of dairy cattle

Ruban,

Danshyn,

Matvieiev

et al. 2023

J. Indonesian Trop. Anim. Agric.

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The aim of the research was to develop a selection index for the evaluation and selection of dairy cattle for increasing milk production and reproductive traits. Materials of the research were data on milk production and reproduction of cows of the Ukrainian Black-and-White dairy breed in commercial farm in Kharkiv region. Studies showed that there was a certain antagonism between milk productivity and reproduction of the Ukrainian Black-and-White dairy cow. The coefficients of phenotypic correlation between milk yield, fat and protein yield and the days open ranged from +0.284 to +0.293. Selection indexes were built, which included protein, fat yield, and days open. The developed selection indexes were characterized by a high relationship with the protein yield (α<0.001), much lower – with the fat yield (α<0.05), while the relationship of the selection indexes with the days open was almost absent. The calculated estimates of correlation and regression coefficients made possible to predict correlated responses of milk production and reproduction traits on selection index. The results showed that the developed selection indexes allow increase the milk production of cows and at the same time to prevent decrease in the level of reproduction.

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“…Depending on the composition of the diet, its duration is 1.4-1.6 times longer than eating fodder. Moreover, repeating these processes during the day is multiple (Ruban et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Indicators of the behavior of highly productive cows under the conditions of using feed stations

Les,

Borshch,

Kosior

et al. 2023

Ukr. Jour. of Vet. and Agr. Sci.

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The purpose of this work was to study the influence of feed stations on behavioral indicators of high-yielding cows. The research was conducted at two farms of TDV “Terezine” (Kyiv region) with different options for feeding fodder: from a feed table and a feed table + at feed stations. On each farm, a group of unpregnant high-yielding cows of the Ukrainian black-spotted dairy breed (II lactation and older) with a daily productivity of 30 kg and above during the calving period (2–3 months of lactation) was formed. Using feed stations for concentrated feeds affected the daily behavior of high-yielding cows. With this option of feeding, lower values of the duration of walking and standing were observed (by 16.3 and 9.6 min), as well as a slightly longer duration of lying down rest – by 17.4 min. The total feeding duration was longer due to the consumption of concentrated feeds at feeding stations, which was 25.6 minutes. At both farms, the peak of daily foraging activity occurred at 08:00 and 18:00. On average, during the day, cows approached the feed table and ate feed 8.7 times (maximum 12, minimum 6). At the farm with concentrated fodder feeding at feed stations, the average hourly duration of fodder consumption from the feed table was slightly lower (by 1–8 min) than at the farm where cows were fed only with fodder mixtures. At the farm, with the use of feed stations, the values of the indices of comfort, use of stalls, and feeding were 3.14, 1.62, and 0.03 % higher compared to the option where cows were fed only with feed mixtures. This trend is explained by a slightly higher duration of rest and general feed consumption and, accordingly, a lower duration of walking and standing of animals. Somewhat lower values were for the index of standing, discomfort, and drunkenness, which were higher for feeding feed from the feed table – by 1.79, 0.04, and 0.008%, respectively

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Characteristics of Lactation Curve and Reproduction in Dairy Cattle

Cited by 6 publications

References 39 publications

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Grounding the economic selection index for evaluation and selection of dairy cattle

Indicators of the behavior of highly productive cows under the conditions of using feed stations

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