Relationship between various phases of milk ﬂow
at mechanical milking system and the somatic cell
count in cow’s milk

Mijić, Pero; Knežević, Ivan; Domačinović, Matija; Ivanković, Ante; Ivkić, Zdenko

doi:10.22358/jafs/67041/2005

Cited by 7 publications

(6 citation statements)

References 3 publications

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“…Presence of long BT increases management costs and mastitis risk as a result of tissue stress and may indicate suboptimal udder pre-milking stimulation. In other species, it has been demonstrated that the reduction of BT is essential to improve udder health, longevity, and milking efficiency ( 30 , 32 , 33 ).…”

Section: Discussionmentioning

confidence: 99%

Study of Milkability and Its Relation With Milk Yield and Somatic Cell in Mediterranean Italian Water Buffalo

et al. 2020

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Milkability is defined as the ability of an animal to give a regular, complete, and rapid milk secretion by the mammary gland in response to a proper milking technique. The aim of the present study was to investigate the relationship of milkability pattern with milk yield and somatic cell score in buffaloes. Milk yield and milkability can be observed through the milk flow profiles recorded by an electronic milkmeter (Lactocorder). A total of 2,288 milk flow curves of Mediterranean Italian buffaloes were used for one-way analysis of variance, and eight milk emission patterns were studied. The most represented milk flow curve was type 3 (27.32%), followed by type 6 (17.79%) characterized by a very long plateau phase. The less represented curve was type 1 (4.41%) characterized by long lag time and low peak flow rate. According to analysis of variance, milk yield ranged from 2.21 to 5.22 kg per milking for types 1 and 6, respectively, whereas the peak flow rate was minimum (0.50 kg/min) and maximum (1.73 kg/min) for types 1 and 4, respectively. The total milking time was on average 11.29 ± 3.68 min; lag time and milk emission time averaged 2.19 ± 2.34 min and 4.30 ± 2.33 min, respectively. The 12.5% (n = 286) of total curves were classified as bimodal and 60 of these were found in type 4. Based on literature, type 4 curves are representative of very short teat canals and very high milk flow. Average somatic cell score was 3.63 ± 1.67 units, with maximum least-squares mean found for type 1 and minimum for type 6. Buffaloes showing curves of type 5 and 6 were characterized by the greatest milk yield at milking, lowest somatic cell score, and lowest milking time. Results of the present study evidenced that such traits could be used in the dairy buffaloes as indicators to improve udder health and milkability.

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Section: Discussionmentioning

confidence: 99%

Study of Milkability and Its Relation With Milk Yield and Somatic Cell in Mediterranean Italian Water Buffalo

et al. 2020

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“…The evaluation of milk flow traits is also important in connection with establishing the efficiency of milk ejection (Tančin and Bruckmaier 2001). Moreover recent studies on milk flow traits showed an association with udder health or somatic cell count (Mijic et al 2005, Tančin et al 2007. The effect of the lactation stage on milk flow traits was analysed by Sandrucci et al (2007), who noted significantly a higher average milk flow rate in Holstein dairy cows in the first half of lactation (up to 150 days in milk).…”

Section: Introductionmentioning

confidence: 99%

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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“…Therefore a long udder decrease phase is associated with overmilking of low-producing quarters. Subclinical cows had significantly shorter duration of plateau phase in comparison with the other cows, according to Mijic et al (2005) and Tančin et al (2007) who reported that time of plateau phase was negatively correlated with SCC. It can be useful to consider plateau phase as a parameter for selection; by prolonging this phase, milkability would improve without excessive increase of milk flow rate, which is associated with high SCC and high susceptibility to bacterial infections (Grindal & Hillerton, 1991; Gäde et al 2007).…”

Section: Discussionmentioning

confidence: 94%

“…machine characteristics, milking routine, milking interval) are probably the most important external factors affecting milk emission patterns (Rasmussen et al 1992; Bruckmaier, 2001; Tančin et al 2006; Sandrucci et al 2007). Moreover recent studies on milk flow traits showed an association with udder health or SCC (Mijic et al 2005; Sandrucci et al 2007; Tančin et al 2007). A good example of the complex interrelations existing among milk flow parameters, milking condition and equipment, and udder health is represented by the phenomenon of bimodality of milk flow curves.…”

mentioning

confidence: 98%

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

Tamburini

Bava

Piccinini

et al. 2009

Journal of Dairy Research

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To investigate the relationships between milk flow traits and udder health status in primiparous cows, 74 primiparous Holstein cows were randomly selected in 5 herds and monitored monthly throughout the whole lactation. A total of 2902 quarter milk samples were collected for bacteriological analyses and the determination of lysozyme, N-acetyl-beta-glucosaminidase (NAGase) and somatic cell count (SCC). Milk flow curves of the whole udder of each cow were registered with continuous electronic milk flow meters. Teat conditions and teat thickness changes during milking were assessed monthly. Quarters, udders and cows were classified as healthy, latent, inflamed and subclinical depending on SCC and the results of bacteriological analyses. Lysozyme in milk, teat apex score and teat thickness change did not vary with udder health status while NAGase in milk significantly increased as udder health status worsened (P<0.001). Milk production (P<0.001) and time of plateau phase (P<0.05) were significantly lower in subclinical cows in comparison with the others. Animals with a high frequency of bimodal curves in the first 100 days in milk showed the worst udder health status during the whole lactation (P<0.01). Moreover, cows classified as subclinical in the first 3 months of lactation had higher peak milk flow than healthy cows (3.81 v. 3.48 kg/min; P<0.05) and shorter duration of plateau phase, expressed both as minutes and as percentage of time of milk flow (pTPL; P<0.001). Multivariate logistic analysis showed udder health status to be associated with duration of plateau phase, time of milk flow, bimodality and duration of overmilking phase. With short time of plateau phase (pTPL <25%), short time of milk flow (<5 min), presence of bimodality and long overmilking phase (>0.8 min) there was an increased risk of poor udder health status. These milk flow traits can be predictive indicators of udder health status; time of plateau phase, expressed as percentage of time of milk flow, can also be a useful parameter for animal selection.

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Relationship between various phases of milk ﬂow at mechanical milking system and the somatic cell count in cow’s milk

Cited by 7 publications

References 3 publications

Study of Milkability and Its Relation With Milk Yield and Somatic Cell in Mediterranean Italian Water Buffalo

Study of Milkability and Its Relation With Milk Yield and Somatic Cell in Mediterranean Italian Water Buffalo

Milkability evaluation of Holstein dairy cows by Lactocorder

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

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