Physiological changes and blood flow in different breeds of dairy cows during different seasons

Aggarwal, Anjali; Dar, Mohammad Rayees; Vats, Preeti; Singh, Mahendra; Kumar, Parveen; Choudhary, Renuka; Rawal, Vikram

doi:10.1080/09291016.2019.1627642

Cited by 4 publications

(4 citation statements)

References 24 publications

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“…Haemoglobin, which transports oxygen and carbon dioxide in RBCs, has a negative correlation with atmospheric temperature. Moreover, the RBC count is reported to decrease significantly in cattle under heat stress conditions (38°C) (Aggarwal et al 2016). However, in the present study, haemoglobin and RBC have not shown any significant difference.…”

Section: Resultscontrasting

confidence: 71%

Haematological Parameters of Lactating Dairy Cows Fed with Total Mixed Ration (TMR) Briquettes

Karunanayaka,

Nayananjalie,

Kumari

et al. 2023

SL J. Agric. Ecosys.

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The goal of this study was to explore the influence of haematological parameters of nursing dairy cows fed with Total Mixed Ration (TMR) briquettes. Nine, Jersey × Sahiwal crossbred dairy cows (Body weight = 275 ± 33 kg and parity = 3) were randomly assigned to three treatments in a Completely Randomized Design (CRD) with a 14-day adaptation period and a 21-day feeding trial. A mixture of Guinea grass (Megathyrsus maximus (Jacq.) B.K. Simon & S.W.L. Jacobs) and commercial cow feeds (CTL) which was the control diet and two TMR briquettes including a variety of air-dried forages with agro-industrial by-products (TMR1 and TMR2) were employed as treatments. Blood samples were taken from each cow at the end of the feeding trial and haematological parameters were measured. The blood was tested for total white blood cell count (neutrophils, lymphocytes, monocytes, eosinophils, and basophils), red blood cell count (haemoglobin and red blood cells), and platelet count by following standard laboratory guidelines. The haematological parameters were not significantly (p>0·05) different among the treatments. The total white blood cell count (× 109 L-1) was measured for CTL, TMR1, and TMR2 as 9.7 ± 1.37, 10.20 ± 1.37, and 10.60 ± 1.37 while the red blood cells (× 1012 L-1) were 5.88 ± 0.60, 6.35 ± 0.60, and 4.40 ± 0.60, respectively. The platelet count (× 109 L-1) were observed as 213.33 ± 36.74, 215.33 ± 36.74, and 226.67 ± 36.74 in cows fed with CTL, TMR1, and TMR2, respectively. The study found that shifting the diet to TMR has no impact on haematological indicators in lactating dairy cows.

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Section: Resultscontrasting

confidence: 71%

Haematological Parameters of Lactating Dairy Cows Fed with Total Mixed Ration (TMR) Briquettes

Karunanayaka,

Nayananjalie,

Kumari

et al. 2023

SL J. Agric. Ecosys.

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“…The results of the study demonstrated that Tharparkar cows are more heat tolerant in comparison to the SW and Gir cows due to less impact of THI on milk production, physiological responses and higher circulatory aldosterone level which regulates the ionic concentration of sodium and potassium in milk (Choudhary et al, 2019). The loss of potassium in the sweat is very high during the summer season.…”

Section: Discussionmentioning

confidence: 92%

“…Long-term maintenance of potassium homeostasis is achieved by alterations in renal excretion of potassium in response to variations in intake (Palmer, 2015). Indigenous breed of cows like Tharparkar, Sahiwal and Gir are the most important milch breed of the western arid region of India (Choudhary et al, 2019). Because of heat tolerance characteristics features, all the three breeds have now been focussed to upgrade them extensively for high milk production and reproductive efficiency (Singh, 2016).…”

Section: Discussionmentioning

confidence: 99%

“…During winter season also the in-house management of buffaloes helps in maintaining the physiological responses to normal level (Aggarwal and Singh, 2005). Parameters like respiration rate, pulse rate, blood pressure, skin surface temperature and blood flow give an immediate response about comfort level to a climatic stress as summer season is more stressful as compared to winter (Aggarwal et al, 2019). Since cows were producing moderate quantity of milk, the plasma levels of energy metabolites-NEFA and glucose were in normal range, however, high producing crossbred cows' meets energy requirement by mobilisation of the body reserves resulting in higher NEFA concentration.…”

Section: Discussionmentioning

confidence: 99%

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Effect of seasons on physiological responses, milk production and composition in Indigenous cows

Sharma¹,

Aggarwal²,

Singh³

et al. 2020

J. Anim. Sci. Vet. Med.

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The present investigation was carried out to find the effect of seasons on milk production and composition in indigenous Sahiwal, Tharparkar and Gir cows maintained under the intensive management practices at the institute livestock farm. Fifteen lactating cows of Tharparkar (TP), Sahiwal (SW) and Gir breed were selected in early lactation. The experiment was conducted for a period of 10 months and the seasons were categorized as hot-humid, hot-dry, autumn and winter season. Blood and milk samples collected at fortnightly intervals were analysed for minerals and plasma hormones. Physiological responses-respiration rate (RR), pulse rate (PR) and rectal temperatures (RT) were recorded. The results showed that the milk fat, solid not fat SNF and urea levels were higher in TP cows in comparison to SW and Gir cows (p<0.01), however, protein % was lower (p<0.01) in TP cows. Milk Mg, Ca and Na levels were lower in hot-humid season than in winter season (p<0.05) in TP cows in comparison to SW and Gir. Plasma cortisol level was higher and aldosterone level was lower in hot-humid and hot-dry season in all the breeds of cows (p<0.05) than the values observed in winter season. TP cows were found to have higher aldosterone level as compared to SW and Gir cows in all the seasons. The cows response to ambient temperature in terms of RR, RT and PR was higher in hot-humid season and lowest in winter season (p< 0.01) in all the breeds, however changes in RT were of less magnitude in TP cows than SW and Gir cows in hot-hot humid season. It was concluded that TP cows have higher plasma aldosterone, milk urea and sodium levels and less diurnal variation in RT, PR and RR in comparison to SW and Gir cows in hot-dry and hot humid season which makes TP cows more heat tolerant than SW and Gir.

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Comparative physiological and biochemical assessment of the heat tolerance of dwarf Vechur, Kasaragod, and standard-size crossbred cattle under humid, hot conditions

Elayadeth-Meethal,

Kolathingal-Thodika

2024

Int J Biometeorol

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Physiological changes and blood flow in different breeds of dairy cows during different seasons

Cited by 4 publications

References 24 publications

Haematological Parameters of Lactating Dairy Cows Fed with Total Mixed Ration (TMR) Briquettes

Haematological Parameters of Lactating Dairy Cows Fed with Total Mixed Ration (TMR) Briquettes

Effect of seasons on physiological responses, milk production and composition in Indigenous cows

Comparative physiological and biochemical assessment of the heat tolerance of dwarf Vechur, Kasaragod, and standard-size crossbred cattle under humid, hot conditions

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