Several Methods of Estrus Detection in Cattle Dams: A Review

Mičiaková, Mária; Strapák, Peter; Szencziová, Iveta; Strapáková, Eva; Hanušovský, Ondrej

doi:10.11118/actaun201866020619

Cited by 13 publications

(21 citation statements)

References 38 publications

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“…The sensing system allows radio communication to detect estrus even at greater distances (up to 50 meters) from the installed radio antenna. According to the available data, this device shows up to 90% of heat detection reliability based on the evaluation of increased locomotion activity (Mičiaková et al, 2018). Roelofs et al (2005a) and Arney et al (1994) confirmed by the use of monitoring devices, that the locomotion activity of dairy cows increases during estrus.…”

Section: Introductionmentioning

confidence: 93%

“…The estrus is defined as a complex of physiological signs and changes of behavior occurring immediately before the ovulation (Mičiaková et al, 2018). Behavior around estrus is according to Forde et al (2011) induced predominantly by the action of estrogens (17β estradiol), which transmit stimuli to the brain from pre-ovulation follicles.…”

Section: Introductionmentioning

confidence: 99%

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Influence of estrus on changes of locomotion activity and rumination time in cattle dams

Strapák

Mičiaková²,

Strapáková³

et al. 2021

Acta fytotechn zootechn

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Licensed under a Creative Commons Attribution 4.0 International License The study is focused on the evaluation of the changes in locomotion activity and rumination time in heifers and dairy cows of Holstein breed during estrus. We analysed the locomotion activity and rumination time using the Heatime RuminAct device on 110 dams (78 dairy cows and 32 heifers). We evaluated a total of 298 estrus cycles during the reference period of 3 days before estrus, 3 days after estrus and on the day of the estrus occurrence. The locomotion of cows was expressed in units of locomotion activity in 24 hours (u/24 h). Rumination time was expressed in minutes in 24 hours (min/24 h). Based on the results of the study, we established that during estrus, the locomotion activity of dams increases to 888 u 24/h (P <0.001), which represents an increase of +305 u/24 h (+38%). Rumination time of dams was considerably affected by estrus as well and decreased from 582 min/24 h (1 day before estrus) to 482 min/24 in estrus time (-43 min/24 h).

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Section: Introductionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Influence of estrus on changes of locomotion activity and rumination time in cattle dams

Strapák

Mičiaková²,

Strapáková³

et al. 2021

Acta fytotechn zootechn

Self Cite

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“…However, the detection of the first estrus symptoms is difficult to ascertain accurately. For this reason, instruments to detect estrus period onset in cows have been developed and tested in previous studies [8,9]. The use of an estrus detector in the field…”

Section: Introductionmentioning

confidence: 99%

“…can help breeders detect the first appearance of estrus, which can lead to an increase in conception rate from AI [3,6]. Recently, there are several methods to predict the first appearance of estrus, such as observing body and vaginal temperature, rumination time, lying behavior, mounting and standing-to-be-mounted behavior, and physical activity [8,9,10].…”

Section: Introductionmentioning

confidence: 99%

Improvement of conception rate on Hanwoo; The key hormones and novel estrus detector

Joo¹,

Jeong²,

Paradhipta³

et al. 2021

J Anim Sci Technol

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Two field experiments were conducted to improve the conception rate of Hanwoo cow. The first experiment aimed to investigate the physiological condition of Hanwoo cows on estrus, including metabolic profiles and body condition score (BCS). The second experiment investigated the effect of a novel estrus detector on the artificial insemination (AI) conception rate for Hanwoo cows. For the first experiment, 80 Hanwoo cows (2.5 ± 0.10 of parity), approximately one month before estrus, were housed in 16 pens and offered the experimental diets twice daily with free water access. The BCS were recorded, and blood was collected from the jugular veins just before AI. The collected blood was used to measure physiological conditions, such as metabolite and hormone levels. For the second experiment, each cow was equipped with a neck-mounted estrus detector collar, which had a sensor connected through the internet. Approximately one month before estrus, three hundred sixty Hanwoo cows (2.4 ± 0.21 of parity) were assigned into groups with or without W-Tag collar treatments. The animals were managed the same as in the first experiment. The pregnancy rate reached 55% in the first experiment. The concentration of luteinizing hormone (LH) was higher ( p < 0.012; 1.56 vs. 1.08 ng/mL) in cows that were not pregnant (NPG) than in cows that were pregnant (PG) after AI. The BCS and other concentrations of metabolites and hormones in the blood were not different in both NPG and PG cows. The ranges of estrogen, LH, and follicle-stimulating hormone for PG cows were 11.9 to 39.0 pg/mL, < 0.25 to 1.98 ng/mL, and < 0.50 to 0.82 ng/mL, respectively. In the second experiment, cows with the estrus detector had lower days open ( p < 0.001; 78.1 vs. 84.8 d), insemination frequency ( p < 0.001; 1.26 vs. 2.52), and return of estrus ( p < 0.001; 70.9 vs. 79.1 d) than those in cows without the estrus detector. In conclusion, the present study indicated that lower LH concentration just before AI potentially increased the pregnancy rate of Hanwoo cows. Furthermore, the application of estrus detectors to Hanwoo cows could improve the conception success rate for AI.

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“…This can be put into context with length of individual feed particles, when longer particles require longer rumination time (Nørgaard et al, 2011). Another factor that affects the length of rumination is lying time (Schirmann et al, 2012) and heat time (Reith and Hoy, 2012;Mičiaková et al, 2018). According to de Ondarza et al (2017) changes in rumination time may indicate health problem earlier than clinical changes occur and before decrease of milk production.…”

Section: Introductionmentioning

confidence: 99%

Rumination Time Monitoring as a Possible Tool to Improve Diagnostics of Heat and Parturition

Toušová

Ducháček

Codl

et al. 2020

Acta Univ. Agric. Silvic. Mendelianae Brun.

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Rumination time is one of possible parameters for observing not only feed management and health status, but also some reproductive characteristics such as heat or periparturient period. The evaluation of rumination time in this study was done on Holstein dairy cows in period around heat (n = 297) and around parturition (n = 322) during one year. SAS 9.3 was used for statistic evaluation. Factors such as heat or periparturient period but also a parity or month within the year have significant impact on rumination time. The decrease of rumination time in the average of 19% (more than 100 minutes) was observed in heat time against days before heat. Similarly, decrease of rumination time more than 110 minutes was observed on the day of parturition in comparison with days before that day. However, the return to normal rumination time values was gradual within 3 day after calving. The results indicated that in healthy cows the rumination time can be a good indicator not only of approaching periparturient but also of incoming heat.

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Several Methods of Estrus Detection in Cattle Dams: A Review

Cited by 13 publications

References 38 publications

Influence of estrus on changes of locomotion activity and rumination time in cattle dams

Influence of estrus on changes of locomotion activity and rumination time in cattle dams

Improvement of conception rate on Hanwoo; The key hormones and novel estrus detector

Rumination Time Monitoring as a Possible Tool to Improve Diagnostics of Heat and Parturition

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