Effect of vacuum level on milking efficiency, somatic cell counts (SCC) and teat end wall thickness in ewes of Greek mountain Boutsiko breed

Sinapis, E.; Diamantopoulos, K.; Abas, Zuraida Abal; Vlachos, Ioannis

doi:10.1016/j.livsci.2006.03.027

Cited by 13 publications

(13 citation statements)

References 19 publications

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“…There is no doubt that dairy sheep increase udder capacity by vertical enlargement, which increases milk yield. Along with the negative impact of higher teat angle, thicker teats decrease milk flow rate and increase stripping milk fraction (Sinapis et al, 2006). These data are confirmed by previous internal evaluations of cisternal capacities.…”

Section: Udder Morphology and Milk Ejectionsupporting

confidence: 85%

“…This system resulted in differences in milk production, a limited effect on parlour throughput, and increased MT (Caria et al, 2013). Machine stripping fraction and teat end thickness after milking were lowest using a milking vacuum of 38 kPa compared to 44 or 50 kPa (Sinapis et al, 2006). For Lacaune dairy ewes, based on OT measurement and SCC, 180 pulsation/min and 36 KPa appears to be more efficient for better stimulation of the animals and to reduce climbing of the liner which increases stripping milk (Marnet et al, 1996).…”

Section: Milking Machine System and Milking Routinesmentioning

confidence: 99%

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Review: Milking routines and cluster detachment levels in small ruminants

Džidić

Rovai

Poulet

et al. 2019

Animal

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Small ruminants not only differ on mammary gland anatomy, milk’s properties and the amount of milk yielded comparable to those of dairy cattle, but also on the milking routine strategies and machine milking settings to maximize daily milk secretion. The udder compartment is proportionally larger in dairy sheep and goats, which requires modifications in the milking machine settings, milking procedures and allows the use of different milking strategies as they better tolerate extension of milking intervals. Depending on the breed, cisternal milk in goats varies from 70% to 90%, whereas in dairy sheep it varies from 50% to 78% of the total gland capacity. This explains why these species are commonly milked without pre-milking teat preparation, while in goats it is applied only in cases of high prevalence of intramammary infection in the herd. Recent French researchers observed that 40% of the goats presented an unbalanced udder as well as unbalanced morphology (21% to 30%) and functional milk flow (around 10% to 20% more) which could induce overmilking. In dairy sheep, selection for higher milk production increases teat angle insertion. Thus, to increase machine milk fraction, it is recommended to use either the ‘Sagi hook’ as an alternative for lifting up the ‘pendulous’ udder during milking or to perform machine stripping. There are three cluster removal strategies for small ruminants: manual, timed and milk flow driven automatic cluster removal (ACR). Automatic cluster removal reduces overmilking, improves teat condition, enables labour saving and provides a consistent milking routine in small ruminants. There are three to five main milk flow profiles in ewes and goats, which result in curves with one or two peaks (or plateau) and different patterns of the milk flow decreasing phase due to the degree of mammary gland imbalance and teat characteristics. When taking into account our current knowledge, ACR recommended take-off settings for goats are: 200 g/min+10 s delay time (DT) for a long decreasing phase or two plateau curves and 500 g/min+5 s DT for a short decreasing phase and one plateau curve. The ACR take-off settings for ewes are: 150 g/min +10 s DT for long decreasing phase and 200 g /min+5 s DT for a short decreasing phase. This review is intended to be useful for scientists and producers seeking basic knowledge of milking routines and cluster detachment settings for parlour performance and milk quality.

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Section: Udder Morphology and Milk Ejectionsupporting

confidence: 85%

Section: Milking Machine System and Milking Routinesmentioning

confidence: 99%

Review: Milking routines and cluster detachment levels in small ruminants

Džidić

Rovai

Poulet

et al. 2019

Animal

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“…MS and MMF were also significantly influenced by treatment but changes did not corresponded to the changes of above mentioned parameters. The volume of milk obtained by machine stripping and maximal milk flow are significantly positively influenced by the vacuum level (Sinapis et al, 2000(Sinapis et al, , 2006. Thus higher MS and MMF were caused by higher vacuum level at EB milking.…”

Section: Resultsmentioning

confidence: 99%

The effect of ewes relocation on milk composition and milk flow kinetics

Jackuliaková

Tančin

Uhrinčať

et al. 2014

Potr. S. J. F. Sci.

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The investigation of an influence of ewes relocation and milking in other parlour (treatment) on milk flow kinetics, milkability and milk composition was the aim of this study. In total 34 ewes of two breeds and crosbreeds Tsigai (14 heads) and Improved Valachian (20 heads) with Lacaune were tested. Two weeks after lamb weaning the ewes were milked in parallel milking parlour (1x16 stalls) under shelter. On the last evening milking (first experimental milking, EB) before relocation of flock to another parlour, and during next three continuous evening milkings (E0 - second, E1 - third and E2 - fourth milking of exp.) after relocation the milk flow kinetics were measured using electronic collection jar. On day E0 after morning milking the flock was moved on a pasture and milked in other parlour (1x24-stalls). During E0 we recorded a significant decrease of total milk yield in comparison with EB (0.527 ±0.04 and 0.647 ±0.04 L). Significant differences were also recorded in machine milk yield, machine stripping, milking time and in maximum milk flow rate. During E0 there was a higher number of nonbimodal and lower numbers of bimodal flow types. The response of ewe to E0 depended on its response to EB. Ewes with bimodal flow at EB responded more negatively to E0 than ewes with nonbimodal or plateau flow. During E2 there were significantly increased protein content and solids not fat in milk. Thus the treatment significantly influenced the milkability of ewes in a negative way, but more clear response was found out in ewes with bimodal flow response to machine milking before treatment. We could assume that relocation to other milking conditions caused only short-term changes in milk flow kinetic and milk yield.

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“…Many observations conducted in France on different breeds of sheep showed that pulsation rate should not be less than 150 cycles per minute, while 180 cycles/min should be the pulsation rate applied for high-yielding ewes, such as the Lacaune breed. To improve the quality of machine milking in ewes of the Greek Boutsiko breed, the use of vacuum level of 38 kPa is better, wherein machine stripped milk % is low and irritation of teats is reduced, without affecting the health status of the udder (Sinapis et al, 2006). The results indicate that the low vacuum level of 16.5 kPa is required for the opening of the teat sphincter in ewes of this breed (Sinapis et al, 2007).…”

Section: Adverse Consequences Of Machine Milkingmentioning

confidence: 94%

The Course of Machine Milking in Small Ruminants

Olechnowicz¹

2012

Milk Production - An Up-to-Date Overview of Animal Nutrition, Management and Health

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Effect of vacuum level on milking efficiency, somatic cell counts (SCC) and teat end wall thickness in ewes of Greek mountain Boutsiko breed

Cited by 13 publications

References 19 publications

Review: Milking routines and cluster detachment levels in small ruminants

Review: Milking routines and cluster detachment levels in small ruminants

The effect of ewes relocation on milk composition and milk flow kinetics

The Course of Machine Milking in Small Ruminants

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