Seasonal variation of bulk milk somatic cell counts in UK dairy herds: Investigations of the summer rise

Green, Martin J.; Bradley, A. J.; Newton, H.; Browne, William J.

doi:10.1016/j.prevetmed.2005.12.005

Cited by 60 publications

(60 citation statements)

References 15 publications

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“…The higher LSSCC during mild season is in contrast with the results of some authors who recorded higher bulk milk SCC during summer, as a consequence of an increase in the proportion of chronic or new high individual cow SCC (Green et al, 2006;Olde Riekerink et al, 2007).…”

Section: Discussioncontrasting

confidence: 99%

Management factors and cow traits influencing milk somatic cell counts and teat hyperkeratosis during different seasons

et al. 2014

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-The objective of the study was to analyze the effect of season, parity, stage of lactation and milking procedures on teat-end condition, cow cleanliness and milk somatic cell count (SCC) and identify risk factors associated with milk somatic cell counts greater than 100,000 cells/mL. A group of 15 Italian dairy farms were visited three times during different seasons: the cold (3.8 °C), the hot (23.5 °C) and the mild (12.1 °C) seasons. Hygiene of udder, flanks and legs was scored on 2,330 cows based on a 4-point scale system, from very clean (score 1) to very dirty skin (score 4). On the same cows, a total of 9,201 teats were assessed for teat-end condition and assigned to four different classes of hyperkeratosis: No lesion (N), Smooth ring (S), Rough (R) and Very rough skin (VR). The average percentage of teats classified in the worst classes of hyperkeratosis (R and VR) equaled 15.9%. Teat hyperkeratosis, cow cleanliness and milk somatic cell count were significantly affected by the season. Teat condition was significantly better in primiparous than in multiparous cows and deteriorated during lactation. Cows with the lowest values of SCC, better teat conditions and better hygiene scores were found in the farms where more than one milking practice (among forestripping, pre-dipping and post-dipping) were performed. Multivariate logistic analysis confirmed that parity and days of lactation significantly influence the risk of high somatic cell count. Among environmental and management aspects, clean udders and pre-dipping are associated with a reduced likelihood to have individual cows with milk SCC greater than 100,000 cells/mL. Teat hyperkeratosis does not seem to be a risk factor of high SCC. Milk somatic cell count can be lowered by means of simple actions such as improvement of hygiene condition of cow environment and adoption of pre-dipping.

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Section: Discussioncontrasting

confidence: 99%

Management factors and cow traits influencing milk somatic cell counts and teat hyperkeratosis during different seasons

et al. 2014

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“…1): mean logSCCs were higher (5.34) in cows with low milk yields (<4000 litres/305d lactation) and increased at the highest level of production (logSCC generally <5 for milk yields ≥ 7000 litres/305d lactation). Increased milk production on farms has been associated with a slight decrease in the SCC due to a dilution effect (Green et al, 2006), although the effect was weak. Organic farms are low-input systems based on grazing with a low level of concentrate intake that leads to lower levels of milk production than on conventional farms.…”

Section: Resultsmentioning

confidence: 99%

Short communication: The main factors affecting somatic cell count in organic dairy farming

Galdo¹,

López‐Alonso²,

Miranda³

et al. 2018

Span. j. agric. res.

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Preventive management practices are essential for maintaining acceptable udder health status, especially in organic farming, in which the use of antimicrobials is restricted. The contribution of the following factors to somatic cell count (SCC) was assessed in 788 cows from 15 organically reared herds in northern Spain: milk production, lactation number, treatments applied, selective dry cow therapy and teat dipping routines. The data were examined by linear logistic regression. Lactation number was the main factor affecting logSCC (β= 0.339, p<0.001) followed in order of importance by milk production (β= -0.205, p<0.001), use of alternative treatments (β=0.153, p<0.001), selective dry cow therapy (β=0.120, p=0.005) and teat dipping routines (β=-0.076, p=0.028). However, the model only explained 17.0% of the total variation in SCC. This variable depends on factors other than those considered here, amongst which udder infection is probably one of the most important. Nonetheless, the study findings enabled us to determine the contribution of the main management factors that should be taken into account to improve udder health status on organic farms.Additional keywords: management factors; udder health; organic; dairy production; SSC.

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“…It has been observed that probiotics bring about a positive change in the bovine intestinal microflora, reduce the incidence of infectious diseases [1,16,21,23], and that somatic cell levels are closely correlated with mastitis in dairy cows, so that high somatic cell counts indicate an increased likelihood of mastitis occurring [11,18]. Furthermore, it is said that heat stress in hot seasons increases somatic cell counts [9] and cooling induces relief from stress [19]. Accordingly, it is suggested that administration of probiotics in conjunction with specific prebiotics encourages colonization by probiotics and improves microflora in the intestine, and, as a result, induces higher milk yields and higher levels of desirable milk components.…”

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confidence: 99%

A New Synbiotic Consisting of Lactobacillus casei subsp. casei and Dextran Improves Milk Production in Holstein Dairy Cows

Hashikawa

Sakamoto

Tomita

et al. 2007

The Journal of Veterinary Medical Science

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ABSTRACT. To evaluate the effects of a new synbiotic consisting of Lactobacillus casei subsp. casei (Lcc) and dextran (Dex) on milk production, a total of 58 Holstein dairy cows, which became pregnant and gave birth to calves at regular intervals and lactated steadily and continuously, were selected. The study had a completely randomized design, and the animals were divided into two groups. Group A was fed with a basic diet only, and Group B was fed with a basic diet supplemented with the synbiotic consisting of freeze-dried Lcc

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Seasonal variation of bulk milk somatic cell counts in UK dairy herds: Investigations of the summer rise

Cited by 60 publications

References 15 publications

Management factors and cow traits influencing milk somatic cell counts and teat hyperkeratosis during different seasons

Management factors and cow traits influencing milk somatic cell counts and teat hyperkeratosis during different seasons

Short communication: The main factors affecting somatic cell count in organic dairy farming

A New Synbiotic Consisting of Lactobacillus casei subsp. casei and Dextran Improves Milk Production in Holstein Dairy Cows

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