The high fertility cycle

Fricke, P.M.; Wiltbank, Milo C.; Pursley, J.R.

doi:10.3168/jdsc.2022-0280

Cited by 10 publications

(4 citation statements)

References 24 publications

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“…The results of this study are in agreement with Fricke et al. (2023), who found an association between lower ΔBCS and a reduction in days open.…”

Section: Discussionsupporting

confidence: 93%

Association between serum mineral levels and reproductive performance in primiparous dairy cows during the peripartum period

Muiño,

Castillo,

Hernandez

et al. 2024

Reprod Domestic Animals

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To the best of the authors' knowledge, no study has previously investigated whether the concentration of minerals is related to reproductive outcomes in primiparous cows. For this reason, two objectives were set in the present study: (i) to assess serum mineral levels, macrominerals, and trace elements during the transition period (period of high nutritional requirements) in primiparous cows, considering reproductive efficiency, and (ii) to address if the serum mineral levels of primiparous cows are related to reproductive efficiency. Blood samples were taken (i) one month before calving, (ii) one week before calving, (iii) one week postpartum, and (iv) one month postpartum. At the beginning and the end of the study, a body condition score (BCS) was assigned to each lactating cow with no clinical signs of disease. The difference between one month before and one month after calving was the body condition loss (ΔBCS). Optimal prepartum concentrations of K and Cl were associated with fewer days open and a shorter interval calving. Furthermore, macrominerals in the serum decreased immediately after calving (one week) but recovered at one month postpartum. In contrast, the highest concentration of trace elements was found at one week postpartum. Primiparous cows with higher postpartum Se, Mn, Co, and Mo concentrations exhibited better reproductive efficiency, and the concentrations of trace elements in serum were correlated with interval calving and the number of inseminations. Finally, primiparous cows with a greater ΔBCS (at least one point) in period 4 exhibited both a longer calving interval and a greater number of days open. In summary, this study showed, for the first time in primiparous cows, that the concentration of some serum minerals not only plays a crucial role during the transition period but is also related to crucial reproductive parameters, such as interval calving and days open.

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“…The results of this study are in agreement with Fricke et al. (2023), who found an association between lower ΔBCS and a reduction in days open.…”

Section: Discussionsupporting

confidence: 93%

Association between serum mineral levels and reproductive performance in primiparous dairy cows during the peripartum period

Muiño,

Castillo,

Hernandez

et al. 2024

Reprod Domestic Animals

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“…Recently, Fricke et al (2022) reported that the fertility or pregnancy problems among high-yielding dairy cows has been solved through the use of various reproductive hormones Embryonic loss (%) Farm in different fixed-time artificial insemination protocols. Nevertheless, the current problem is not getting cows pregnant, but preserving gestations.…”

Section: Resultsmentioning

confidence: 99%

“…Nevertheless, the current problem is not getting cows pregnant, but preserving gestations. Fricke et al (2022) also emphasized that the loss or gain of body condition peripartum has a great impact, not only on fertility in the first services, but also on the loss or maintenance of gestation.…”

Section: Resultsmentioning

confidence: 99%

Embryonic losses between the early diagnosis and the confirmation of gestation in dairy cows from different farms for one year

Lammoglia-Villagómez

Rojas-Ronquillo

Cabrera-Núñez

et al. 2023

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Objective: To determine embryonic losses between the early diagnosis and the confirmation of gestation in dairy cows from different barns for one year. Design/Methodology/Approach: A total of 3,413 confined Holstein cows from three different dairy barns in the Mexican Altiplano (highlands) were studied. Cows were milked three times a day with an average daily production of 36.5 ± 1.5 L. Gestation diagnosis was performed by ultrasonography at 34 ± 7 d after the artificial insemination, while gestation was confirmed at 60 ± 5 d. Average pregnancy loss was determined and embryonic losses were compared taking into account barn and month. Results: The overall average of embryonic losses was 18.8%. Neither the month factor nor the month × barn interaction affected the percentage of embryonic losses (p<0.05). Differences per barn (p<0.05) were observed and barns 1, 2, and 3 recorded losses percentages of 4 ± 1.6 %, 11.4 ± 1.6 %, and 22.9 ± 1.6%, respectively. Study Limitations/Implications: Detailed differences between barns were not studied, since cow management was similar in all three of them. Embryonic losses must be recorded, given their significant impact on the barn. Findings/Conclusions: There is a high variability among barns regarding embryonic losses between the early diagnosis and the confirmation of gestation. This situation may be the result of management differences, since the breed and environmental conditions were the same in all three barns.

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“…Además, en la interacción de los biotipos y paridades, las HNA primíparas + multíparas presentaron un mayor riesgo de PDG (RR = 2,0; IC 95 %: 1,1 -3,7; P = 0,02) que las HNZ nulíparas. Este resultado nos lleva a considerar que la consistente selección generacional basada principalmente en la producción láctea del biotipo HNA, donde los altos niveles de producción de leche genera un mayor estrés metabólico (Fernández-Novo et al, 2020;Wiltbank et al, 2016) y una mayor pérdida de condición corporal en el posparto temprano (Fricke et al, 2022) en las primíparas y multíparas debido a…”

Section: Resultados Y Discusiónunclassified

Supervivencia de la gestación en vacas Holstein asociada a la paridad y biotipo en Uruguay

Garzón

Neto

Urioste

et al. 2022

ALPA

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The high fertility cycle

Cited by 10 publications

References 24 publications

Association between serum mineral levels and reproductive performance in primiparous dairy cows during the peripartum period

Association between serum mineral levels and reproductive performance in primiparous dairy cows during the peripartum period

Embryonic losses between the early diagnosis and the confirmation of gestation in dairy cows from different farms for one year

Supervivencia de la gestación en vacas Holstein asociada a la paridad y biotipo en Uruguay

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