Evaluation of the relationship between milk glutathione peroxidase activity, milk composition and various parameters of subclinical mastitis under seasonal variations

Çolakoğlu, Hatice Esra; Küplülü, Özlem; Vural, Mehmet Rıfat; Küplülü, Şükrü; Yazlık, Murat Onur; Polat, İbrahim; Öz, Burcu; Kaya, Ufuk; Bayramoglu, Rustem

doi:10.24099/vet.arhiv.160728

Cited by 9 publications

(6 citation statements)

References 28 publications

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“…The high temperature can increase the cortisol levels and affect the milk production from cows [24,25]. At the same time, it can increase the milk antioxidant levels which can decrease the milk quality in summer seasons from June to August [26]. Bohmanova et al [27] reported that seasonal differences in milk production are caused by periodic changes of environment over the year, which has a direct effect on animal's milk production through decreased dry mass intake and an indirect effect through fluctuation in quantity and quality of feed.…”

Section: Resultsmentioning

confidence: 99%

Estimating milk production losses by heat stress and its impacts on greenhouse gas emissions in Korean dairy farms

Park¹,

Ataallahi²,

Ham³

et al. 2022

J Anim Sci Technol

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Meteorological disasters caused by climate change like heat, cold waves, and unusually long rainy seasons affect the milk productivity of cows. Studies have been conducted on how milk productivity and milk compositions change due to heat stress (HS). However, the estimation of losses in milk production due to HS and hereby environmental impacts of greenhouse gas (GHG) emissions are yet to be evaluated in Korean dairy farms. Dairy milk production and milk compositions data from March to October 2018, provided by the Korea Dairy Committee (KDC), were used to compare regional milk production with the temperature-humidity index (THI). Raw data for the daily temperature and relative humidity in 2018 were obtained from the Korea Meteorological Administration (KMA). This data was used to calculate the THI and the difference between the maximum and minimum temperature changing rate, as the average daily temperature range, to show the extent to which the temperature gap can affect milk productivity. The amount of milk was calculated based on the price of 926 won/kg from KDC. The results showed that the average milk production rate was the highest within the THI range 60-73 in three regions in May: Chulwon (northern region), Hwasung (central region), and Gunwi (southern region). The average milk production decreased by 4.96 ± 1.48% in northern region, 7.12 ± 2.36% in central region, and 7.94 ± 2.57% in southern region from June to August, which had a THI range of 73 or more, when compared to May. Based on the results, the level of THI should be maintained like May. If so, the farmers can earn a profit of 9,128,730 won/farm in northern region, 9,967,880 won/farm in central region, and 12,245,300 won/farm in southern region. Additionally, the average number of cows raised can be reduced by 2.41 ± 0.35 heads/farm, thereby reducing GHG emissions by 29.61 ± 4.36 kg CO 2 eq/day on average. Overall, the conclusion suggests that maintaining environmental conditions in the summer that are similar to those in May is necessary. This knowledge can be used for basic research to persuade farmers to change farm facilities to increase the economic benefits and improve animal welfare.

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Section: Resultsmentioning

confidence: 99%

Estimating milk production losses by heat stress and its impacts on greenhouse gas emissions in Korean dairy farms

Park¹,

Ataallahi²,

Ham³

et al. 2022

J Anim Sci Technol

View full text Add to dashboard Cite

show abstract

“…In the course of the study, the first heifers after calving revealed a significant decrease in the amount of glucose, total protein and albumin in the blood, with an increase in the content of malonic dialdehyde, non-esterified fatty acids and globulin in comparison with their levels before calving. Earlier observations showed a higher level of non-esterified fatty acid in the first heifers between 2 and 8 weeks in the postpartum period [17]. At the same time, in another study, the authors found that the level of non-esterified fatty acids increases from 1 week before calving, which is then replaced by a gradual decrease after calving.…”

Section: Discussionmentioning

confidence: 86%

Physiological changes in hematological parameters of black-and-white cows at the beginning of lactation

Fayzullina

2023

E3S Web Conf.

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The onset of lactation can affect the condition of cows, affecting the metabolic processes throughout the body and hematological parameters. The blood parameters of high-milk cows after the first and after the second calving were evaluated in the work. 47 fully healthy pregnant cows were selected 3 weeks before the expected calving. These included first-heifers and re-calving purebred cows of a black-and-white breed. The animals were divided into two groups according to the number of pregnancies available in their lives: the group of first-born heifers consisted of 22 heads, the group of re-calves included 25 heads. The examination was performed 3 weeks before calving and 3 weeks after calving with taking blood samples. The first heifers after calving showed a decrease in the concentration of glucose, total protein and albumin with a significant increase in the concentrations of malondialdehyde, non-esterified fatty acids and globulin compared with the first study. Re-calved cows showed a significant decrease in the amount of glucose, total protein and albumin in the blood, combined with a significant increase in cholesterol and malondialdehyde levels compared to their pre-calving values. In re-calving cows, a significant decrease in non-esterified fatty acids was noted in comparison with calved first-calf cows. During the transition phase, control of the main hematological parameters is necessary for the timely prevention of pathology in first-heifers and re-lost cows.

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“…The high temperature can increase the cortisol levels and affect the milk production from cows [23]. At the same time, it can increase the milk antioxidant levels which can decrease the milk quality in summer seasons from June to August [24]. Bohmanova et al [25] reported that seasonal differences in milk production are caused by periodic changes of environment over the year, which has a direct effect on animal's milk production through decreased dry mass intake and an indirect effect through fluctuation in quantity and quality of feed.…”

Section: Resultsmentioning

confidence: 99%

Estimating losses in milk production by heat stress and environmental impacts of greenhouse gas emissions in Korean dairy farms

Park¹,

Ataallahi²,

Ham³

et al. 2021

J Anim Sci Technol

View full text Add to dashboard Cite

show abstract

Evaluation of the relationship between milk glutathione peroxidase activity, milk composition and various parameters of subclinical mastitis under seasonal variations

Cited by 9 publications

References 28 publications

Estimating milk production losses by heat stress and its impacts on greenhouse gas emissions in Korean dairy farms

Estimating milk production losses by heat stress and its impacts on greenhouse gas emissions in Korean dairy farms

Physiological changes in hematological parameters of black-and-white cows at the beginning of lactation

Estimating losses in milk production by heat stress and environmental impacts of greenhouse gas emissions in Korean dairy farms

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