Effects of season and herd milk volume on somatic cell counts of Florida dairy farms

Ferreira, Fernanda C.; Vries, Albert De

doi:10.3168/jds.2014-8695

Cited by 14 publications

(14 citation statements)

References 28 publications

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“…(2012) in Thailand and Hashemzadeh and Khalajzadeh (2014) in Iran reported bulk tank SCC > 500 000 cells/ml and about 347 000 cells/ml during 2010–12 and 2006–07 respectively. Moreover, Ferreira and De Vries (2015) observed relatively higher bulk tank SCC in milk from hot humid areas of Florida than in lower temperature areas. Whilst not definitive, these various data do suggest possible negative effects of heat stress (Zucali et al ., 2011; Smith et al ., 2013; Nasr and El-Tarabany, 2017).…”

Section: Heat Stress and Somatic Cell Count (Scc)mentioning

confidence: 97%

Effect of heat stress on udder health of dairy cows

Rakib

Zhou

et al. 2020

Journal of Dairy Research

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This Research Reflection short review presents an overview of the effects of heat stress on dairy cattle udder health and discusses existing heat stress mitigation strategies for a better understanding and identification of appropriate abatement plans for future stress management. Due to high ambient temperatures with high relative humidity in summer, dairy cows respond by changes of physical, biochemical and biological pathways to neutralize heat stress resulting in decreased production performance and poorer immunity resulting in an increased incidence of intramammary infections (IMI) and a higher somatic cell count (SCC). In vitro studies on bovine polymorphonuclear cells (PMN) suggested that heat stress reduces the phagocytosis capacity and oxidative burst of PMN and alters the expression of apoptotic genes and miRNA which, together with having a negative effect on the immune system, may explain the increased susceptibility to IMI. Although there are limited data regarding the incidence rate of clinical mastitis in many countries or regions, knowledge of SCC at the cow or bulk tank level helps encourage farmers to improve herd health and to develop strategies for infection prevention and cure. Therefore, more research into bulk tank SCC and clinical mastitis rates is needed to explain the effect of heat stress on dairy cow udder health and functions that could be influenced by abatement plans.

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Section: Heat Stress and Somatic Cell Count (Scc)mentioning

confidence: 97%

Effect of heat stress on udder health of dairy cows

Rakib

Zhou

et al. 2020

Journal of Dairy Research

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“…These results are in accordance with some previous observations. Ferreira and Vries (2015) found that Florida dairy farms produce milk with a lower SCC during the period from February to April in comparison to the period from August to October, which is specifically for hot, humid weather. Therefore, these conditions should be taken into consideration in the programs for improving the milk quality.…”

Section: Discussionmentioning

confidence: 93%

The impact of changes in the milk payment system and season on the hygienic quality of milk

Pašić

Kalit²,

Salajpal³

et al. 2016

JCEA

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The aims of this paper were to investigate the impact of changes in the milk payment system and the season on the hygienic quality of raw milk. The bulk cow's milk samples were collected throughout the whole area of Bosnia and Herzegovina over the period of four years (2010-2013), from farms that deliver milk to the dairy industry. The total bacterial count (TBC) was analysed in 52,999 milk samples and the somatic cell count (SCC) in 53,363 milk samples. The results of the research showed that the proportion of bulk milk with the SCC < 300,000 mL-1 significantly increased in the observed period, as well as the proportion of farms that produce milk of EU quality (P < 0.05). The season had a significant effect (P < 0.05) on the SCC; in April the proportion of bulk milk with SCC < 300,000 mL-1 was significantly higher (P < 0.05). A significant increase (P < 0.05) in the proportion of milk with the TBC < 200,000 cfu•mL-1 was perceived, as well as the proportion of farms which deliver that type of milk (P < 0.05). A Significant lower (P < 0.05) proportion of milk in the summer period with TBC < 200,000 cfu•mL-1 was determined. It can be concluded that consistent appliance of regulations which determine the quality of milk, leads to the improvement of the hygienic quality of redeemed milk, as illustrated by the case of Bosnia and Herzegovina. This kind of milk payment system is important for both, the higher economic benefit of farms and the dairy processing industry.

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“…So the authors of one of the article on the study of the effect of seasonality on the level of milk yields and SCC noted that the lowest level of SCC and the highest yields in the majority of the dairy farms in Florida are observed from February to April. They also called for new programs to improve the quality of milk, which should be focused on the conditions of animals between August and October, because at this time, most farms show a marked increase in SCC in collected milk and a decrease in milk yields [99].…”

Section: Discussionmentioning

confidence: 99%

Hydrophobized Reversed-Phase Adsorbent for Protection of Dairy Cattle against Lipophilic Toxins from Diet. Efficiensy In Vitro and In Vivo

Sotnichenko

Pantsov

Shinkarev

et al. 2019

Toxins

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The steady growth of inflammatory diseases of the udder in dairy cattle forces us to look for the causes of this phenomenon in the context of growing chemical pollution of the environment and feeds. Within the framework of this concept, an analysis was made of the polarity level of the three toxic impurity groups, which are commonly present in dairy cattle feeds. These impurities are presented by mycotoxins, polyaromatic hydrocarbons (PAH) and persistent organic pollutants (POP). It has been determined that 46% of studied mycotoxins (n = 1500) and 100% of studied polyaromatic hydrocarbons (n = 45) and persistent organic pollutants (n = 55) are lipophilic compounds, prone to bioaccumulation. A comparative evaluation of the sorption capacity of four adsorbents of a different nature and polarity with respect to the simplest PAH, naphthalene and lipophilic estrogenic mycotoxin, zearalenone in vitro has been carried out. The highest efficiency in these experiments was demonstrated by the reversed-phase polyoctylated polysilicate hydrogel (POPSH). The use of POPSH in a herd of lactating cows significantly reduced the transfer of aldrin, dieldrin and heptachlor, typical POPs from the “dirty dozen”, to the milk. The relevance of protecting the main functional systems of animals from the damaging effects of lipophilic toxins from feeds using non-polar adsorbents, and the concept of evaluating the effectiveness of various feed adsorbents for dairy cattle by their influence on the somatic cell count in the collected milk are discussed.

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Effects of season and herd milk volume on somatic cell counts of Florida dairy farms

Cited by 14 publications

References 28 publications

Effect of heat stress on udder health of dairy cows

Effect of heat stress on udder health of dairy cows

The impact of changes in the milk payment system and season on the hygienic quality of milk

Hydrophobized Reversed-Phase Adsorbent for Protection of Dairy Cattle against Lipophilic Toxins from Diet. Efficiensy In Vitro and In Vivo

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