Physiological Responses of Dairy Cows as a Function of Environment in Holding Pen

Silva, Danilo Corrêa; Passini, Roberta

doi:10.1590/1809-4430-eng.agric.v37n2p206-214/2017

Cited by 11 publications

(4 citation statements)

References 15 publications

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“…The EACS treatment yielded Bgt values that were 4.3 ºC lower than those of the S treatment, aligning with findings by Silva & Passini (2017). In their study, these authors assessed Girolando cows during lactation within a climate-controlled setting equipped with sprinklers and ventilation in the holding area.…”

Section: Resultssupporting

confidence: 69%

Climate control in the feeding area for Girolando cows: Effects on environmental and production variables

Sousa,

Passini,

Almeida

et al. 2023

Rev. bras. eng. agríc. ambient.

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High-production cows require facilities providing comfortable environments to enhance production efficiency and sustain milk quality. This study evaluated the impact of climatizing the feeding area post-morning and afternoon milking on environmental variables, thermal comfort indices, and the yield and quality of milk in lactating Girolando cows. The experiment followed a 4 × 4 Latin square design with four treatments across four experimental periods, using four cows per treatment. The post-milking climate control treatments included: shading; shading + ventilation; shading + ventilation + shower; and an evaporative adiabatic cooling system. The evaporative adiabatic cooling system proved most effective in maintaining thermal conditions near the comfort level for dairy cows, as indicated by lower thermal comfort indices. This system also enhanced morning and overall milk production. However, the climate control systems did not significantly affect the contents of protein, fat, or lactose in the milk.

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Section: Resultssupporting

confidence: 69%

Climate control in the feeding area for Girolando cows: Effects on environmental and production variables

Sousa,

Passini,

Almeida

et al. 2023

Rev. bras. eng. agríc. ambient.

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“…Cardiac autonomic activity did not change during the substages of the holding pen as reflected by HF and LF/HF ratio. The low vagal and high sympathetic tone recorded for the 3 substages of the holding pen support that pre-milking parlors can be stressful locations due to the reduced social space and crowding (Silva and Passini, 2017). During preparation, HF was still lower than baseline (P < 0.001) and LF/ HF ratio reached its peak (P < 0.001 compared with the last 5 min of the holding pen).…”

Section: Short Communication: Heart Rate Variability Step and Ruminmentioning

confidence: 77%

Short communication: Heart rate variability, step, and rumination behavior of dairy cows milked in a rotary milking system

Kovács

Kézér

Póti

et al. 2019

Journal of Dairy Science

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Step behavior, heart rate (HR), the high-frequency (HF) component of heart rate variability (HRV), the ratio of the low-frequency (LF) and HF components (LF/HF ratio) as well as rumination behavior during milking were investigated in dairy cows milked in a high-capacity rotary milking system (n = 49) to study animals' stress responses to the milking process. Cardiac parameters were analyzed for undisturbed standing (baseline) and for the stages of the morning, afternoon, and evening milking processes (i.e., driving animals from the barn to the pre-milking holding pen, premilking holding pen, preparation, milking, and waiting after milking in the milking stall). During driving, HR was greater than during all other stages. After driving, a gradual decrease in HR was observed. The HF decreased during driving, indicating a decrease in vagal tone compared with baseline. When animals were in the holding pen, vagal tone decreased, whereas sympathetic tone increased with lower values than recorded for baseline and driving. During preparation, HF values were still lower than those recorded for baseline. The recovery of the autonomic activity was observed following preparation as indicated by increased HF and decreased LF/HF ratio during milking and waiting stages. During milking, 53.1% of the animals ruminated. The frequency of steps was greater during preparation (3.7 ± 1.8 steps/min) than during milking (0.7 ± 0.4 steps/ min) and waiting after milking (1.6 ± 1.0 steps/min). Our results suggest that being in the holding pen is stressful for cows; however, vagal predominance from the onset of milking, the low frequency of steps, and the high prevalence of rumination during milking suggest a possible welfare benefit of the investigated rotary milking system.

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“…Experiments have shown this when the functional state of the cerebral cortex changes. Especially when the cortical processes of excitation and inhibition collide, significant changes in the secretion of milk and milk fat are observed (Hemsworth 2003;Marçal-Pedroza et al 2020;Silva and Passini, 2017).…”

Section: Introductionmentioning

confidence: 99%

Study of the influence of the type of higher nervous activity on the secretion of organic components of milk

Golovan¹,

Yurin²,

Gneush³

et al. 2023

FSAB

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The purpose of the experiment was to study the influence of the type of higher nervous activity (HNA) on the secretion of organic components of milk in various milking conditions. Under the influence of the unconditioned stimulus "inadequate udder preparation" in the milk of machine milk in cows in the morning milking: I HNA type - secretion and percentage of milk fat and the ratio of percentage of fat to percentage of lactose decreases, while in all other types there is a decrease in the percentage of fat and protein. In the unbalanced (II) type, the average duration of the milk flow cycle decreases; in the inert (III) and weak (IV) type, the concentration of fat and lactose decreases, and the ratio of fat to lactose in the latter. It is advisable to characterize the stress resistance of animals based on knowledge of their types of HNA. At the same time, the complexity of their determination by known methods should be noted. In dairy farming, it is necessary to provide for the presence of all types of HNA among the cows and take into account their individual characteristics in terms of resistance to stress, the level of milk production and milk yield. It is recommended to apply the model of dairy cows developed by us to objectively determine the type of their stress resistance in production conditions. The presented patterns of changes in the secretory function of the mammary gland under the influence of tested stress factors on dairy cows of different types of higher nervous activity should be used to develop express methods for determining the types of stress resistance in animals and completing the herds of dairy farms.

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Physiological Responses of Dairy Cows as a Function of Environment in Holding Pen

Cited by 11 publications

References 15 publications

Climate control in the feeding area for Girolando cows: Effects on environmental and production variables

Climate control in the feeding area for Girolando cows: Effects on environmental and production variables

Short communication: Heart rate variability, step, and rumination behavior of dairy cows milked in a rotary milking system

Study of the influence of the type of higher nervous activity on the secretion of organic components of milk

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