The state of the hepatobiliary system in dairy cows with postpartum ovarian hypofunction

Нежданов, А. Г.; Сафонов, В. А.; Chusova, G. G.; Sineva, A.M.; Lobodin, K.A.; Лукина, В.; Panfilov, R.Yu.

doi:10.30896/0042-4846.2020.23.9.41-46

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“…Современное молочное скотоводство характеризуется существенным ростом продуктивности животных. Генетически обусловленный потенциал маточного поголовья требует соответствий условий кормления и содержания, а так же максимальной активизации обменных процессов в организме [7,9]. В первую очередь, интенсивный лактогенез ассоциирован с высокой потребностью животного в энергии, дефицит которой негативно сказывается на процессах метаболизма и зачастую может стать причиной развития различных патологий, снижения воспроизводительной способности и молочной продуктивности [1,6].…”

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“…Одним из маркеров оценки энергетического обмена является определение в крови уровня глюкозы, как основного источника «быстрой» энергии для организма [8,11]. Показано, что у животных с овариальной недостаточностью наблюдается дефицит глюкозы в первые два месяца лактации [7,11,12]. В месте с тем, установлено, что при некоторых патологических состояниях уровень данного метаболита может находится в норме или наоборот быть повешенным [2,3].…”

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The effect of the concentration of β-hydroxybutyrate and glucose in the blood on the reproductive function and milk productivity of cows

Nikolaev

2023

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The intensity of metabolic processes in highly productive cows is associated with metabolic disorders and the development of dystrophic changes in the body. The paper evaluates the effect of the concentration of β-hydroxybutyrate and glucose in the blood of new-bodied cows on the indicators of reproductive ability and milk productivity. To do this, venous blood was obtained from cows of different ages after childbirth, where the concentration of glucose and β-hydroxybutyrate was determined. Depending on the level of glucose and ketone bodies, animals were retrospectively differentiated into groups and the severity of economically useful signs was determined. It was found that cows with a glucose level above 3.3 mmol/l required 0.6 more inseminations (P≤0.01), compared with animals whose indicators were in the range of 2.2...3.3 mmol/l. At the same time, the greatest difference in the multiplicity of insemination was present in animals 3...7 lactation (1.2 inseminations per fertilization; P≤0.001). The period from calving to fertilization in cows with a high glucose content was longer by 39.4 days (P < 0.05), while the maximum deviation was found among animals older than the 2nd lactation (by 43.4%; P< 0.05). An increase in the level of β-hydroxybutyrate over 0.7 mmol/l was also accompanied by a deterioration in reproductive function. Thus, the lengthening of the infertility period for all lactation was 21.2 days (P≤0.05). The most pronounced negative effect on reproductive function in ketonemia was observed in first-heifers and cows of the second lactation. So, after the first birth, the lengthening of the period from calving to fertilization was 42.0 days (P < 0.05), and after the second lactation - 29.2 days (P < 0.05). Thus, an increase in the level of glucose and β-hydroxybutyrate in the blood negatively affects, first of all, the reproductive function of cows, and to a lesser extent, the indicators of milk productivity.

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Section: введение / Introductionunclassified

The effect of the concentration of β-hydroxybutyrate and glucose in the blood on the reproductive function and milk productivity of cows

Nikolaev

2023

jour

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The state of the hepatobiliary system in dairy cows with postpartum ovarian hypofunction

Cited by 1 publication

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The effect of the concentration of β-hydroxybutyrate and glucose in the blood on the reproductive function and milk productivity of cows

The effect of the concentration of β-hydroxybutyrate and glucose in the blood on the reproductive function and milk productivity of cows

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