Effect of animal activity and air temperature on heat production, heart rate, and oxygen pulse in lactating Holstein cows

Talmón, D.; Zhou, M.; Carriquiry, M.; Aarnink, A.J.A.; Gerrits, W.J.J.

doi:10.3168/jds.2022-22257

Cited by 4 publications

(2 citation statements)

References 30 publications

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“…According to TALMON et al (2023) eating was the activity that most increased HP, VO 2 , and HR. Measurement time had a significant effect on HR (Table 4) throughout the 24 h period (P < 0.0001).…”

Section: Variablesmentioning

confidence: 99%

“…Researchers are seeking to estimate heat production in ruminants by using heart rate adjusted for oxygen consumption per beat as there is a linear relationship between heart rate (HR) and oxygen consumption (VO 2 ) in homeothermic animals, thereby indicating that it is possible to estimate heat production through HR measurements (TALMON et al, 2023). The primary goal is to improve and develop techniques capable of measuring the energy requirements of animals in a shorter time_frame, with cheaper equipment, and without changing the behavior and normal conditions of animal husbandry (BROSH, 2007;CHAVES et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Different methods and times to estimate heat production in sheep fed with sunflower meal

Geraseev,

Santos,

Chaves

et al. 2024

Cienc. Rural

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The objective of this study was to assess the oxygen pulse and heart rate method (O2P-HR) using a respiration chamber at different measurement times for estimate the heat production (HP) of lambs fed increasing levels of sunflower meal in their diet. Twenty-four lambs were assigned to four experimental diets (0, 100, 200, and 300 g of sunflower meal kg-1 DM). Heat production was estimated using the O2P-HR (HPO2P) method and a respirometry chamber (HPRC). Measurements were obtained by simultaneously measuring heart rate (HR) and oxygen consumption over 3, 6, 9, 12, 15, 18, 21 and 24 h. A flow-through respirometry chamber for small ruminants was used to determine oxygen consumption (VO2) and carbon dioxide and methane production. Data on dietary treatment, measurement times and their interactions were analyzed as repeated measures using mixed model procedures and Restricted Maximum Likelihood (REML) estimation. The Pearson’s correlation coefficient was used to compare techniques. There was no effect of the different levels of sunflower meal inclusion on VO2 and heat production. The HPO2P (126.16 kcal/ BW0.75/day) was 2% higher than that of the HPRC (124.61 kcal/ BW0.75/day), and the correlation coefficients was 0.628. The coefficient of variation was greater for the HPO2P (21.33%) than for HPRC (11.44%). HR (beats/min), VO2 (mL/min/BW0.75) and O2P-HR (mL/beat) required measurement times of 24, 15 and 9 hours, respectively. A measurement time of 24 h was necessary to ensure a more accurate estimate of the heat production using the O2P-HR method.

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Section: Variablesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Different methods and times to estimate heat production in sheep fed with sunflower meal

Geraseev,

Santos,

Chaves

et al. 2024

Cienc. Rural

View full text Add to dashboard Cite

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Connecting the dots: relationship between heart rate and overall dynamic body acceleration in free-ranging cattle

Niccolai,

Devineau,

Thiel

et al. 2024

Conservation Physiology

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Monitoring physiological indicators including heart rate (HR) is crucial for managing animal welfare across diverse settings, from precision livestock farming to wildlife conservation. HR is a reliable indicator of energy expenditure and stress, yet the invasive nature of HR loggers limits their application in wild and free-ranging species. This study explores whether overall dynamic body acceleration (ODBA), measured with an external accelerometer, can serve as a less invasive proxy for HR. Using free-ranging cattle as a model species in Norway, we examined the relationship between ODBA and HR to assess how external accelerometry might indirectly reflect physiological states in settings that resemble wild conditions. Cattle provide an ideal model because they share some characteristics with wild herbivores, including exposure to diverse terrain and potential predation, whilst offering advantages for handling and sensor retrieval. Our findings showed that low ODBA values corresponded to static behaviours (e.g. standing, ruminating), where small movements caused HR spikes, whilst higher ODBA reflected dynamic activities (e.g. walking, foraging), with HR plateauing. This relationship suggests that ODBA can be used to approximate HR in environments where direct HR measurement is challenging. By using accelerometry to infer HR changes in free-ranging cattle, this study offers insights that could extend to wild species, offering a tool for conservationists to monitor and manage animal health and well-being less invasively.

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Energy efficiency of grazing Hereford heifers classified by paternal residual feed intake

Marín,

Naya,

Espasandin

et al. 2024

Translational Animal Science

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Residual feed intake (RFI) has become a widely spread index of feed efficiency. Although most of beef cattle systems in the world are pasture based, RFI evaluation and research is usually performed in confinement conditions. In this context, residual heat production (RHP) estimated as the difference between actual and expected heat production (HP), could allow to identify efficient animals. Thus, the aim of this work was to evaluate the relationship between paternal estimated breeding values (EBV) for RFI and beef heifer efficiency, measured as RHP, as well as its association with heifers’ productive and reproductive performance on grazing conditions. Seventy-one 25 ± 0.8-mo-old and seventy-four 24 ± 0.7-mo-old Hereford heifers were managed as contemporary groups in spring 2019 and 2020, respectively. Heifers were sired by 10 RFI-evaluated bulls and classified into three groups according to the paternal EBV for RFI: five bulls of low RFI (high efficiency, pHE), two bulls of medium RFI (medium efficiency), and three bulls of high RFI (low efficiency, pLE). The experimental period lasted 70 d prior to their first insemination where HP was determined by the heart rate-O2 pulse technique. In addition, reproductive performances during the first and second breeding and calving seasons were recorded. Heifers’ RHPs expressed as MJ/d and kJ/kg of body weight (BW)0.75/d were positively correlated with paternal RFI EBVs (P < 0.05; r > 0.60). Moreover, BW and average daily gain (ADG) were greater (P < 0.01) for pHE than pLE heifers while expressed as units of BW0.75/d, neither total HP nor metabolizable energy (ME) intake differed between groups, but pHE heifers had greater retained energy (RE; P < 0.01) and lower RHP (P < 0.05) than pLE ones. Gross energy efficiency (RE/ME intake) was greater (P < 0.001) for pHE than pLE heifers while the HP/ADG and RHP/ADG were reduced (P < 0.05) and feed-to-gain ratio (ADG/DM intake) tended to be greater (P = 0.07) for pHE than pLE heifers. In addition, during the first breeding and calving seasons, small but significant (P < 0.01) differences in reproductive responses between groups suggested an earlier pregnancy in pHE heifers than the pLE group, differences that disappeared during the second breeding and calving seasons. Thus, heifers sired by high-efficiency bulls measured as RFI were more efficient measured as RHP in grazing conditions, without significant differences in reproductive performance.

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Effect of animal activity and air temperature on heat production, heart rate, and oxygen pulse in lactating Holstein cows

Cited by 4 publications

References 30 publications

Different methods and times to estimate heat production in sheep fed with sunflower meal

Different methods and times to estimate heat production in sheep fed with sunflower meal

Connecting the dots: relationship between heart rate and overall dynamic body acceleration in free-ranging cattle

Energy efficiency of grazing Hereford heifers classified by paternal residual feed intake

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