Influence of time of day the milk and season on the somatic cell count under Hungarian conditions

Baltay, Z.

doi:10.5194/aab-45-349-2002

Cited by 6 publications

(5 citation statements)

References 14 publications

(12 reference statements)

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“…The effect of continued use of machine-milking on the cow's udder and teats cannot be underestimated. The quarter position significantly (p<0.001) influenced the SCS of the cows (BALTAY, 2002). It was found that the quarter in the right rear position of the udder had the lowest score of 3.33, whereas the others had values ranging from 3.55 to 3.60.…”

Section: Milk Componentsmentioning

confidence: 84%

The influence of calf rearing methods and milking methods on performance traits of crossbred dairy cattle in Thailand – 1. Milk yield and udder health

2004

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Forty crossbred (75-87.5% HF) dairy cows were included in a 2 x 2 factorial experiment composed of hand milking (HM) or machine milking (MM), and artificial rearing (bucket feeding, BR) or restricted suckling (RS). Calf suckling and milk feeding was done until 84 days postpartum. Milking was continued until the end of lactation. MM cows had a significantly (p<0.05) higher daily saleable milk production (SMP) (7.49 vs. 6.97 kg/day), daily total milk production (TMP) (8.60 vs. 7.96 kg/day) and total lactation milk yield (TLMY

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Section: Milk Componentsmentioning

confidence: 84%

The influence of calf rearing methods and milking methods on performance traits of crossbred dairy cattle in Thailand – 1. Milk yield and udder health

2004

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“…In this condition, the metabolic activity was affected to a slight extent by heat stress, and milk yield could decrease. Generally, high ambient temperatures depressively affect milk production (Johnson 1986;BALTAY, 2002;Soch, 2005). However, the effects of hot environment on milk production vary with the LS.…”

Section: Resultsmentioning

confidence: 99%

Effects of the stage and number of lactation on milk yield of dairy cows kept in open barn during high temperatures in summer months

2009

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Objective of this paper was evaluating the effect of high temperatures on production of milk of dairy cows in southern Moravia (Czech Republic, East Central Europe). We tested hypotheses that the milk efficiency of dairy cows kept in free-stall open barn without supplemental cooling is influenced of a month of summer period, lactation stage (LS) and lactation number (LN) of dairy cows. 193 Holstein cows were used. Three stages were stated according to the days in milk at the July 1: Stage 1-peak (0-50 d); Stage 2-mid lactation (51-120 d); Stage 3-late lactation (121-200 d). We found 63 summer (SumD) and 14 tropical days (TropD), 86 days with the temperature-humidity index (THI) above 72.0, and 26 days with the THI above 78.0, from May to September. The average monthly milk yields were statistically differed (P<0.001) among LS, also among LN. We found significant interactions between LS and LN (May, P<0.05; June, P<0.01; July, P<0.001; August and September, P<0.01). The average monthly milk yields of Stage 1 were gradually increased from May to July (from 33.94 ± 8.99 kg on 36.62 ± 6.62 kg), then decreased to September (30.05 ± 5.69 kg). Depression of milk was significant between July and August (36.62 ± 6.62 kg vs. 32.26 ± 5.88 kg; P<0.01). Milk yield in the Stage 2 was the highest in May (41.55 ± 7.93 kg) and then gradually decreased until October (27.69 ± 5.12 kg). Comparisons of months, LS and LN for whole observed period from May to October differed very highly significantly, there were recorded interactions month:LS (P<0.001), month : LN (P<0.01), and LS : LN (P<0.001). Dairy cows of Stage 1 were affected by the high temperatures in milk production for 305 days lactation significantly more than cows from Stage 2 (8 954.4 ± 1 526.9 kg vs. 9 614.1 ± 1 488.6 kg; P<0.05). Keywords: dairy cows, milk yield, high temperatures, lactation stage, lactation number Zusammenfassung Einfluss des Laktationsstadiums und der Laktationsnummer auf die Milchleistung der im Offenstall während höherer Temperaturen in den Sommermonaten gehaltenen Kühe

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“…Generally, differences in rainfall and climatic conditions in different regions of Iran and even in different years can lead to different results. In countries where calving occurs throughout the year, mastitis is dependent to the pattern of growth of pathogens in different seasons and years (Baltay 2002). But when seasonal conditions are not conducive to the growth of microorganisms, changes in animal physiological conditions (such as calving and changes in breast status) increase the number of somatic cells in milk, which has a physiological effect.…”

Section: Resultsmentioning

confidence: 99%

Effect of climate and season of calving on genetic parameters of production and somatic cells in Holstein cows

Hemmatabadi

Jafarabadi

Kashan

et al. 2021

Indian J of Anim Sci

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Records (111543) of first calving test day milk production with three milking times during the years 1983 to 2016 were used for 62 herds in the Breeding Center data file. The dairy cows under study had 10 test day records. Variables from the herd-year-calving combination as random effect and herd-test-month-age combination at the time of record as fixed effects were created for each animal. Average milk yield in hot and dry climate was higher than hot and wet climate. The average traits of milk fat and milk protein percentage in hot and dry climates were higher than hot and wet climates, but somatic cell traits were higher in hot and wet climates. The phenotypic variance of milk yield was higher in hot and dry regions in all ten test day records. The phenotypic variance of milk fat percent was higher in hot and dry area on the first, second, fifth and sixth test days. The average genetic variance of milk fat percentage in hot and wet region at 9 test day records was higher than in hot and dry region. Phenotypic variance of milk protein percentage in hot and dry area was higher than in hot and wet regions in all test days. In countries where calving occurs throughout the year, mastitis is dependent to the pattern of growth of pathogens in different seasons and years. Changes in animal physiological conditions (calving and changes in breast status) increase the number of somatic cells in milk, which has a physiological effect.

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Influence of time of day the milk and season on the somatic cell count under Hungarian conditions

Cited by 6 publications

References 14 publications

The influence of calf rearing methods and milking methods on performance traits of crossbred dairy cattle in Thailand – 1. Milk yield and udder health

The influence of calf rearing methods and milking methods on performance traits of crossbred dairy cattle in Thailand – 1. Milk yield and udder health

Effects of the stage and number of lactation on milk yield of dairy cows kept in open barn during high temperatures in summer months

Effect of climate and season of calving on genetic parameters of production and somatic cells in Holstein cows

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