Postpartal ovarian activity of healthy cows and those affected by subclinical metabolic disorders

Haraszti, J.; Huszenicza, G.; Molńar, László; Solti, L.; Csernus, V.

doi:10.1016/0378-4320(85)90016-8

Cited by 15 publications

(4 citation statements)

References 16 publications

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“…The effect of the concentration of plasma glucose is mostly only momentary and does not appear until the energy intake is more balanced. The relations found between plasma lipaemia and level of reproductive indicators of cows are in accordance with the findings of Haraszti et al (1985), Ruegg et al (1993), Vhora et al (1995) and Machal et al (1996). The calculated correlation coefficient between the day of blood sampling (20th to 100th day post partum) showed a predominantly positive dependence over the entire studied period (r =0.01 and 0.45), with the exception of three months when the correlation was low and positive (r p = -0.11 and 0.07).…”

Section: Discussionsupporting

confidence: 80%

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Relation among blood plasma total lipids, cholesterol, glucose and urea concentrations, and reproductive performance in Bohemian Spotted cows

Máchal¹,

Chládek²,

Žižlavský³

1999

J. Anim. Feed Sci.

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Blood samples were taken, in monthly intervals, for 12 months from Bohemian Spotted cows between 20 and 100 days post partum for total lipids, cholesterol, glucose and urea determination. In all, 208 cows were sampled to define the relation between reproductive performance and concentration of biochemical plasma indicators. Reproductive performance was characterized by the length of the interval (average 79.67 days), service period (average 113.64 days) and insemination index (average 1.67). Average values for the entire studied period were 5.33 mmol • 1~' for plasma urea, 3.16 g • 1 1 for total lipids, 3.93 mmol • 1~' for cholesterol and 3.93 mmol • l" 1 for glucose. During the investigations the length of the interval decreased from 111.39 days to 73.57 days and service period from 137.06 days to 84.61 days. The average concentrations of urea and total lipids changed in the individual months depending on changes in feed rations. Calculated correlations between the respective biochemical blood indicators and studied reproductive indicators changed in the same way. Indicators of reproductive performance were affected by the internal environment, particularly in the case of low lipaemia, and, in contrast, in the case of high blood plasma uremia.

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Section: Discussionsupporting

confidence: 80%

“…However, the difference was not highly significant. Haraszti et al (1985) consider the concentration of serum cholesterol to be an indicator suitable for prediction of reproductive performance. Similarly, Machal et al (1996) found that conception was more successful in cows with higher concentration of serum cholesterol and total lipids.…”

Section: Introductionmentioning

confidence: 99%

Relation among blood plasma total lipids, cholesterol, glucose and urea concentrations, and reproductive performance in Bohemian Spotted cows

Máchal¹,

Chládek²,

Žižlavský³

1999

J. Anim. Feed Sci.

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“…We found, however, a relatively close correlation between daily milk production during peak lactation and some postpartal ovarian parameters; firstly in the length of the acyclic period. In new of the influence of imbalanced energy intake upon the postpartal acyclic period (BUTLER et al, 1981;REID et al, 1983;WATSON and HARWOOD, 1984;HARASZTI et al, 1985) and considering the usual difficulties in energy supply of high yielding dairy cows under large scale farm conditions, we suggest that these ovarian disturbances can be regarded as consequences of improper feeding and metabolism.…”

Section: )mentioning

confidence: 96%

Postpartal Ovarian Function in Holstein and Crossbred Cows on Large Scale Farms in Hungary

Huszenicza

Molńar

Solti

et al. 1987

Journal of Veterinary Medicine Series A

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The post partum resumption of cyclic ovarian activity was followed up by regular rectal palpation and milk progesterone assay on 249 Holstein-Friesian and crossbred cows under Hungarian large scale farm conditions. The most frequent abnormalities were delayed start of cycling (36.1 YO), cycles of irregular length (17.3 %), cystic degeneration of the ovaries (16.5 YO), cessation of cyclicity (7.6 YO) and persistent corpus luteum (2.4 Yo). Sometimes more than one abnormality occurred in the same animal. The duration of the postpartum acyclic period correlated with the daily milk production at the peak of lactation.An increased acyclic period after calving was more frequent among heifers and cows after their fourth calving, while the occurrence of other abnormalities increased parallel to age.Ovarian dysfunction was more frequent in high yielding cows and, except for cystic ovarian degeneration, after involutional disturbances.The disturbed resumption of ovarian cyclicity had a detrimental effect on the re-conception.

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“…Снижение репродуктивной способности у коров с СКK многие авторы связывают с различными физиологическими нарушениями, подтверждаемые биохимическими и эндокринологическими исследованиями. В частности, в большом количестве публикаций одной из главных причин снижения воспроизводительных качестве молочных коров называется задержка возврата к цикличности из-за снижения синтеза гонадотропин-рилизинггормона и напрямую связанного с ним лютеинизирующего гормона, что может косвенно подтверждаться в дальнейшем пониженным уровнем прогестерона [5,6,7]. При этом влияние других гормонов рассматривается не так часто и в литературе встречается крайне редко.…”

Section: Introductionunclassified

Subclinical ketosis as a factor reduction of reproductive indicators of high productive cows

V.¹

2021

jour

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Purpose: The aim of the research is to study the effect of subclinical ketosis (SCK) on the effectiveness of artificial insemination of highly productive dairy cows in the postpartum period.Materials and methods. The studied animals were selected according to the principle of conditional analogs and were divided into 2 groups of 6 animals each. Group 1 - animals with a blood concentration of 3- hydroxybutyrate˂ 1.0 mmol / l, group 2 - animals with subclinical ketosis with a concentration of 3-hydroxybutyrate in the blood in the range of 1.0-1.4 mmol / l. Blood was collected from animals on the 5th, 15th and 33-35th days after calving. In the obtained blood serum samples, the content of total protein, albumin, urea, glucose, cholesterol, triglycerides, calcium, phosphorus, magnesium, creatinine, total bilirubin, the activity of transaminase enzymes and alkaline phosphatase was determined. The concentration of steroid hormones has been determined. Before artificial insemination, the animals were synchronized according to the pressinovsinh scheme.Results. Most of the biochemical blood parameters did not go beyond the reference values. By the time of hormonal stimulation of sexual heat in cows with SCK, a decrease in 3-hydroxybutyrate (˂ 1,0 mmol / l) and an increase in glucose (> 3.0 mmol / l) were recorded. On the 15th day after calving, in the group with SCK, there was an increase in total bilirubin, cholesterol, triglycerides, and magnesium (p˂ 0,01). On the 15th day after calving, testosterone levels were 13% higher in the SCK group. By the time of synchronization, the level of progesterone in the group of animals with SCK was lower in comparison with the control group. In the group of animals with SCK, the lowest reproductive indices were recorded: the insemination index in the group with SSC was higher by 46%, the service period was 49 days longer, the interbody period was significantly longer by 68 days (p˂ 0,05).Conclusion. Subclinical ketosis, recorded on the 15th day after calving, helps to reduce the reproductive performance of high -yielding dairy cows. Normalization of the concentration of 3-hydroxybutyrate from subclinical to physiologically normal values, and subsequent hormonal synchronization do not reduce this negative effect of SCK.

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Postpartal ovarian activity of healthy cows and those affected by subclinical metabolic disorders

Cited by 15 publications

References 16 publications

Relation among blood plasma total lipids, cholesterol, glucose and urea concentrations, and reproductive performance in Bohemian Spotted cows

Relation among blood plasma total lipids, cholesterol, glucose and urea concentrations, and reproductive performance in Bohemian Spotted cows

Postpartal Ovarian Function in Holstein and Crossbred Cows on Large Scale Farms in Hungary

Subclinical ketosis as a factor reduction of reproductive indicators of high productive cows

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