Use of Every Ten-Day Criteria for Metabolic Profile Test after Calving and Dry Off in Dairy Herds.

Kida, Katsuya

doi:10.1292/jvms.64.1003

Cited by 34 publications

(38 citation statements)

References 18 publications

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“…In our study, differences in concentrations of the examined variables in jugular vein blood were expected and are in accordance with earlier data (Kida, 2002;Šamanc et al, 2011). Namely, jugular vein insulin concentrations in lactating cows decreased with higher milk production due to the more pronounced NEB during early lactation (Hayirli et al, 2011).…”

Section: Discussionsupporting

confidence: 92%

A comparison of the concentrations of energy-balance-related variables in jugular and mammary vein blood of dairy cows with different milk yield

Šamanc

Kirovski

Lakic

et al. 2014

Acta Veterinaria Hungarica

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The aim of this study was to compare the concentrations of blood variables obtained simultaneously from the jugular and mammary veins of dairy cows. Eighty Holstein cows were divided into four equal groups: dry, low-(LY), medium-(MY) and high-yielding (HY). Blood insulin, glucose, non-esterified fatty acid (NEFA), beta-hydroxybutyrate (BHBA) and urea concentrations were measured. The jugular and mammary vein (J/M) ratio between concentrations of each variable was calculated. Differences between the groups of cows in concentrations of variables in the jugular vein were not in accordance with those obtained for the mammary vein. J/M values for insulin and glucose concentrations were above 1.0 in all groups of cows. The ratios for NEFA and BHBA concentrations were under or equal to 1.0 in dry and LY cows but above 1.0 in the MY and HY groups, indicating that in MY and HY cows those metabolites are apparently utilised by the mammary gland. J/M values for urea were above 1.0 in dry and LY cows but less than 1.0 in groups MY and HY, indicating that in the latter case urea is apparently released by the mammary gland. In conclusion, J/M for NEFA, BHBA and urea may be useful for estimation of the critical point when the mammary gland receives insufficient energy precursors for its current activity.Key words: Energy balance, mammary vein, jugular vein, dairy cow, milk yield Energy balance (EB) is calculated as the difference between energy consumption in the diet and energy use by the body to support maintenance, growth, milk

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Section: Discussionsupporting

confidence: 92%

A comparison of the concentrations of energy-balance-related variables in jugular and mammary vein blood of dairy cows with different milk yield

Šamanc

Kirovski

Lakic

et al. 2014

Acta Veterinaria Hungarica

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“…This assumption is supported by the fact that the cows in this study were able to take in more roughage after hoof trimming. GGT is thought to be an index of liver function [5]. In this experiment, GGT before hoof trimming was higher than after hoof trimming, and this was evidence that injury to the liver decreased after hoof trimming.…”

Section: Discussionsupporting

confidence: 46%

“…Eleven cows that had healthy hooves and that were in the mid to late lactation period were selected for the study. During this lactation period, the blood chemical composition is stable [5], and therefore any changes seen may be considered to be a direct effect of hoof trimming. The mean days in milk for the group was 204.6 (range: 122-288 days) and the mean number of calvings was 2.7 times (range: 1-6 times) before trimming.…”

Section: Animalsmentioning

confidence: 99%

The Effects of One-Time Hoof Trimming on Blood Biochemical Composition, Milk Yield, and Milk Composition in Dairy Cows

Nishimori

Okada

Ikuta

et al. 2006

The Journal of Veterinary Medical Science

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ABSTRACT. Although not scientifically proven, hoof trimming has been empirically shown to increase milk yields in healthy dairy cows. In this study, we examined the effect of one-time hoof trimming on blood biochemical composition, milk yield, and milk composition in healthy dairy cows. Eleven cows in the mid to late lactation period that were clinically fit and without hoof disease were subjected to hoof trimming, and metabolic profile tests and dairy herd improving tests were performed before and three weeks after the hoof trimming. The metabolic profiles showed changes in albumin, blood urea nitrogen, ammonia, glucose, and β-hydroxybutyric acid as a result of the hoof trimming. This was indicated by the fact that the cows began to intake more roughage after hoof trimming than prior to hoof trimming, and rumen fermentation became stable. There was no change in milk yield after trimming. However, the milk fat and milk protein compositions were significantly increased after trimming. KEY WORDS: dairy cow, hoof trimming, metabolic profile test.

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“…Kida [24] established 10-day criteria of blood metabolites to interpret MPT, which reflects physiological changes in the dairy cow such as milk production, feeding and management, every 10 days after calving or dry off. These criteria were interpreted by the deviations from the reference mean values of metabolites rather than the actual values.…”

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confidence: 99%

Relationships of Metabolic Profiles to Milk Production and Feeding in Dairy Cows

Kida¹

2003

J. Vet. Med. Sci.

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ABSTRACT. The aim of this study was to assess the practicality of the metabolic profile test (MPT) for feeding evaluation in dairy cattle.Stepwise regression analysis was used to evaluate the relationships of MPT to feeding and milk production of 4,679 cows in 343 commercial dairy herds. Significant explanatory variables were determined by forward set-up selection, among the deviated values from the reference values of 10 blood metabolites and body condition score, to predict dependent variables, i.e., milk production and the rate of feeding to nutrient requirements, in each or all lactation stages and the dry period. The milk production model of the all-lactation stage showed the greatest goodness-of-fit (adjusted R 2 =0.214, p<0.0001) with high positive regression coefficients for serum cholesterol, magnesium, urea nitrogen and albumin, and negative for glucose and calcium. In the feeding models, goodness-of-fit of crude protein was relatively high (R 2 =0.072, p<0.0001) with a positive relationship to blood urea nitrogen. Although the other feeding models were low in goodness-of-fit, several significant explanatory variables to feeding were found. All feeding models in the late lactation stage and the dry period, in which the feeding was stable, had greater goodness-of-fit than those in the early lactation stage in which milk production varied. It was concluded that the values which deviated from the reference values for the MPT components could assess milk production and feeding, and the MPT is a practical tool for auxiliary feeding evaluation. KEY WORDS: dairy cow, feeding and nutrition, metabolic profile test.

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Use of Every Ten-Day Criteria for Metabolic Profile Test after Calving and Dry Off in Dairy Herds.

Cited by 34 publications

References 18 publications

A comparison of the concentrations of energy-balance-related variables in jugular and mammary vein blood of dairy cows with different milk yield

A comparison of the concentrations of energy-balance-related variables in jugular and mammary vein blood of dairy cows with different milk yield

The Effects of One-Time Hoof Trimming on Blood Biochemical Composition, Milk Yield, and Milk Composition in Dairy Cows

Relationships of Metabolic Profiles to Milk Production and Feeding in Dairy Cows

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