Milk emission and udder health status in primiparous dairy cows during lactation

Tamburini, A.; Bava, L.; Piccinini, R.; Zecconi, A.; Zucali, Maddalena; Sandrucci, A.

doi:10.1017/s0022029909990240

Cited by 24 publications

(11 citation statements)

References 31 publications

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“…According to Tančin and Bruckmaier (2001) the high percentage of bimodal milk flow curves indicates that the cows were not well prepared for machine milking. A lower percentage of bimodal milk flow curves was observed by Tamburini et al (2010) and Sandrucci et al (2007).…”

Section: Resultsmentioning

confidence: 81%

Milkability evaluation of Holstein dairy cows by Lactocorder

Strapák

Antalík

Szencziová

2011

Journal of Agrobiology

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Milkability evaluation of Holstein dairy cows by LactocorderThe aim of this work was to evaluate chosen milk flow characteristics of Holstein dairy cows, using mobile electronic milk flow meters - Lactocorders. A total of 181 Holstein dairy cows were evaluated and divided according to parity, lactation stage and bimodality in order to carry out a detailed comparison of measured milkability traits. The average total milk yield was 11.98±3.41 kg per milking with an average milk flow rate of 2.52±0.75 kg min-1 and a maximum milk flow rate of 3.94±1.30 kg min-1. The total milk yield showed positive correlations with the average milk flow rate (r = 0.48; P<0.001) and also with the maximum milk flow rate (r = 0.32; P<0.001). More than 47% of milk flow curves were classified as bimodal. Bimodality was positively correlated with the duration of the incline phase (r = 0.73; P<0.001) and negatively correlated with the quantity of milk obtained during the first minute of milking (r = -0.34; P<0.001). In relation to the lactation stage - the highest average milk flow rate was reached by Holstein dairy cows at the beginning of the lactation (up to 100 days in milk), and in relation to parity - the highest milk flow rates were measured in second-lactation dairy cows.

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Section: Resultsmentioning

confidence: 81%

Milkability evaluation of Holstein dairy cows by Lactocorder

Strapák

Antalík

Szencziová

2011

Journal of Agrobiology

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“…This criteria can be applied in most of Italian dairy herds, however, in peculiar areas where cows population is largely different from the one considered in this study (95% Italian Holstein Fresian), also breed effect can be considered. These approach based on SCC can be integrated with other ones such as the occurrence of a clinical mastitis, an antimicrobial treatment during lactation or the presence of teat alteration, all factors increasing the risk of recurrent mastitis (Tamburini et al 2010;Vanhoudt et al 2018;Zecconi et al 2018). However, these latters factors are strictly dependent by the accuracy of herd records and, therefore, less consistent when compared to the ones based on SCC, and appliable only to some herds.…”

Section: Discussionmentioning

confidence: 99%

Somatic cell count as a decision tool for selective dry cow therapy in Italy

Zecconi

Sesana

Vairani

et al. 2018

Italian Journal of Animal Science

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The application of selective dry cow therapy is one of the measures currently suggested to reduce the use of antibiotics in dairy herds. However, the application of selective dry cow therapy will have a profound impact on Italian dairy herds, very likely affecting both milk yield and quality. Identifying cows to be treated at drying off is crucial for farmers and health authorities, therefore it is necessary the definition of a consistent and certified procedure. This article reports the results of a study aiming to identify which SCC threshold would be the most appropriate to identify cows to be treated and the potential consequences of different selection protocols on udder health after calving under field condition. Last milk test record before drying off and the average of lactation milk test records were considered on a database including 45,682 cow from 709 herd. Five different threshold were considered (50,000; 100,000; 150,000; 200,000; and 250,000 cells/mL). The statistical analysis of the database and a rational evaluation of the results suggest to define thresholds of 100,000 cells/mL for primiparous cows and 200,000 cells/mL for pluriparous cows measured either before drying-off or as the average of all the milk tests of the lactation. The criteria proposed will be useful to manage herd health and, specifically, dry-cows in an efficient and sustainable way, decreasing the use of antimicrobials without increasing the risk of affecting milk yield and quality after calving. HIGHLIGHTS The definition of a consistent and approved procedure to identify cow to be treated in a selective dry cow therapy approach is crucial. SCC from milk test records are a convenient, accurate and certified method. SCC values obtained before drying off or calculated as the average of lactation records can be used. The thresholds of 100,000 cells for primiparous cows and of 200,000 cells for pluriparous cows are suggested as an efficient and sustainable decision tool.

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“…Similar trends were observed comparing morning and afternoon milkings. Bimodality has been considered a negative trait in Europe Tamburini et al, 2010), due to the transient milking of teats during the period of low milk flow. However, any cow with cisternal milk and delayed milk ejection will likely display a bimodal milk flow profile, which does not necessarily result in a period of blind milking.…”

Section: Discussionmentioning

confidence: 99%

Analysis of milking characteristics in New Zealand dairy cows

Edwards

Jago

López‐Villalobos

2014

Journal of Dairy Science

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The objective of this study was to describe the variation in milking characteristics, and factors associated with these traits, in grazing dairy cows milked without premilking stimulation. Milk yield, duration, and average and maximum milk flow rate data were collected from 38 farms in New Zealand at 2 time points (spring and autumn) during the 2010 to 2011 season. Subsequently, a second data set, allowing the generation of daily milk flow profiles, was collected from 2 farms in the 2011 to 2012 season. Corresponding animal data, such as breed, date of birth, and ancestry information, were extracted from the New Zealand Dairy Industry Good Animal Database (New Zealand Animal Evaluation Ltd., Hamilton, New Zealand). Residual milking duration (deviation from the regression line of milk yield on milking duration) was calculated, allowing the identification of fast-milking cows independent of milk yield. Variance components for the milking characteristics traits were estimated using an animal linear mixed model. The average milk yield was 10 kg/milking and the average milking duration was 360 s. The average milk flow rate was 1.8 kg/min and maximum milk flow 3.3 kg/min, with 44% of milk flow curves being classified as bimodal. Primiparous animals exhibited different milk flow profiles, with a lower maximum flow, than multiparous animals, possibly due to differences in cisternal capacity. Residual milking duration was shortest (-10s) in mid-lactation (121-180 d) and was 13s longer for Jersey compared with Friesian cows; however, it was 19s shorter when adjusted for energy content. Residual milking duration had a negligible genetic correlation (-0.07) with milk yield, indicating that selection for cows with shorter residual milking duration should have a negligible effect on milk yield. A heritability of 0.27 indicated that residual milking duration could be valuable as part of a breeding program. Knowledge of the distribution of milking durations for a given milk yield allows farmers to choose appropriate cluster-on time when using a maximum milking time strategy to improve milking efficiency.

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Milk emission and udder health status in primiparous dairy cows during lactation

Cited by 24 publications

References 31 publications

Milkability evaluation of Holstein dairy cows by Lactocorder

Milkability evaluation of Holstein dairy cows by Lactocorder

Somatic cell count as a decision tool for selective dry cow therapy in Italy

Analysis of milking characteristics in New Zealand dairy cows

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