scholarly journals Reproductive Efficiency Of Dairy Cows With Repeat Breeding

2021 ◽  
Vol 1 (1) ◽  
pp. 18-20
Author(s):  
Dhian Ramadhanty
Keyword(s):  
Dairy Cows ◽  
Reproductive Efficiency ◽  
Calving Interval

Salah satu gangguan reproduksi yang banyak terjadi di Peternakan sapi perah, yaitu kawin berulang (Repeat Breeding). Tujuan penelitian ini adalah untuk melihat efisiensi reproduksi induk sapi perah yang mengalami kawin berulang. Penelitian ini dilakukan secara survei dengan pengumpulan data primer dan sekunder. Pengambilan data primer dilakukan dengan cara pengamatan, melihat recording dan wawancara langsung dengan peternak menggunakan daftar pertanyaan yang tersedia, sedangkan data sekunder diperoleh dari petugas inseminator di Dusun Panette Kecamatan Cendana Kabupaten Enrekang Sulawesi Selatan. Hasil penelitian menunjukkan bahwa pada ternak normal rata-rata calving interval adalah 13 bulan sedangkan pada ternak yang mengalami kawin berulang  rata-rata  calving interval adalah 24 bulan. Sapi perah dengan calving interval yang panjang menunjukkan bahwa sapi perah tersebut mempunyai efisiensi reproduksi yang rendah. Sebaliknya, sapi perah betina dengan calving interval yang pendek menunjukkan bahwa sapi perah tersebut memiliki efisiensi reproduksi yang tinggi. Kesimpulan penelitian ini adalah efisiensi reproduksi ternak yang mengalami kawin berulang jika dilihat dari calving interval yaitu lebih panjang dibandingkan dengan ternak dengan kondisi normal. Sapi perah dengan calving interval yang panjang menunjukkan bahwa sapi perah tersebut mempunyai efisiensi reproduksi yang rendah.  

scholarly journals EFISIENSI REPRODUKSI SAPI PERAH FRIESIAN HOLSTEIN DI WILAYAH KERJA KOPERASI PETERNAKAN BANDUNG SELATAN (The Reproductive Efficiency of The Friesian Holstein Dairy Cows in The Area of South Bandung Livestock Cooperative)

2020 ◽  
Vol 4 (1) ◽  
Author(s):  
Fahmi Reza Fauzi ◽  
Tendy Kusmayadi ◽  
Tati Rohayati ◽  
Titin Nurhayatin ◽  
Ibrahim Hadist
Keyword(s):  
Dairy Cows ◽  
Research Method ◽  
Secondary Data ◽  
Conception Rate ◽  
Survey Method ◽  
Reproductive Efficiency ◽  
Calving Interval ◽  
Data Sampling ◽  
The South ◽  
Holstein Dairy Cows

Abstrak Penelitian ini bertujuan untuk mengetahui tingkat efisiensi reproduksi melalui pengamatan angka Service per Conception (S/C), angka Conception Rate (CR) dan angka Calving Interval (CI) pada sapi perah Friesian Holstein (FH) di wilayah kerja Koperasi Peternakan Bandung Selatan. Metode penelitian yang digunakan adalah metode survey, dengan pengambilan data bersumber dari data sekunder dan primer. Pengambilan data primer menggunakan kuesioner kepada 100 peternak di Wilayah Kerja Koperasi Peternakan Bandung Selatan (KPBS), sedangkan data sekunder diambil dari data rekording di kantor KPBS dengan pengambilan data masing-masing 10% dari populasi yaitu laktasi 2 sebanyak 144 ekor dan laktasi 3 sebanyak 250 ekor. Hasil penelitian menunjukkan Service per Conception (S/C) ternak laktasi 2 adalah 1.6 dan laktasi 3 adalah 1.8, Conception Rate (CR) ternak laktasi 2 adalah 58% dan laktasi 3 adalah 46% dan Calving Interval (CI) ternak laktasi 2 rata-rata adalah 385 hari dan ternak laktasi 3 rata-rata adalah 389 hari berkisar 12-13 bulan. Kesimpulan dari penelitian ini bahwa efisiensi reproduksi sapi perah Friesian Holstein (FH) di Wilayah Kerja Koperasi Peternakan Bandung Selatan dapat dikategorikan baik. Kata kunci: Service_per_Conception, Conception_Rate, Calving_Interval, Friesian Abstract This research aim to know the level of reproductive efficiency through the observation number Service per Conception (S/C), the Conception Rate (CR) and Calving Interval (CI) on Friesian Holstein Dairy Cows in the area of South Bandung Livestock Cooperative. The research method used Survey method, with the primer and secondary data. The primer data retrievaled from 100 breeders in South Bandung Livestock Cooperative and secondary data sampling from the recording lactation 2 as many as 144 herd and lactation 3 as many as 250 herd. Result of the research showed the Service Per Conception (S/C) of the second lactation is 1.6 and third lactation is 1.8, Conception Rate (CR) is 58% on the second lactation and 46% on third lactation and Calving Interval (CI) of lactation 2 average is 385 days and lactation 3 average is 389 days revolved around 12-13 month. The conclusions of this study that ther reproductive efficiency of the Friesian Holstein Dairy Cows in the area of the South Bandung Livestock Cooperative can be categorized good. Keywords: Service_per_Conception, Conception_Rate, Calving_Interval, Friesian_ Holstein

scholarly journals Reproductive disorders in dairy cows of the southwest of Paraná

2018 ◽  
Vol 9 (3) ◽  
pp. 535-539
Author(s):  
Fernanda Elisa Giacomelli ◽  
ADALGIZA PINTO NETO ◽  
MARCELO FALCI MOTA ◽  
ANTÔNIO CAMPANHA MARTINEZ ◽  
LUIZ SÉRGIO MERLINI
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Diagnosis And Treatment ◽  
Economic Losses ◽  
Reproductive Efficiency ◽  
Ovarian Cysts ◽  
Calving Interval ◽  
Estrus Cycle ◽  
Reproductive Disorders ◽  
South Of Brazil

Reproductive efficiency of dairy cows is evaluated directly considering the calving interval, which is affected by nutrition, irregular estrus cycle, prolonged anestrus, and reproductive diseases. Reproductive diseases cause economic losses due to diagnosis and treatment costs, and reduction in milk production. Thus, the objective of this study was to report the occurrence of the main reproductive disorders in dairy cows of the Southwest of Paraná, South of Brazil. Data of ultrasound diagnoses were collected from 2274 cows of 70 rural properties in the municipalities of Realeza, Planalto, Capanema, Pérola do Oeste, and Santa Isabel do Oeste from January 2014 to May 2015. Reproductive disorders were found in 24.50% (557/2274) of the animals evaluated; ovarian cysts (follicular, and luteal) were the most significant disorders, found in 16.13% (367/2274) of the cases. Other disorders were found less frequently. The occurrence of follicular and luteal cysts was observed especially in primiparous animals in months of pasture transition.

scholarly journals Desempeño reproductivo de vacas Gyr lechero en un sistema a pastoreo del trópico ecuatoriano

2020 ◽  
pp. 99
Author(s):  
Alicia Esther Farfán Talledo ◽  
Wilter Fernando Borja Veloz ◽  
Luis Santiago Quiroz Fernández ◽  
Juan José Zambrano Villacís ◽  
Pablo Roberto Marini
Keyword(s):  
Dairy Cows ◽  
Reproductive Performance ◽  
Dry Season ◽  
Reproductive Efficiency ◽  
Calving Interval ◽  
Retrospective Data ◽  
Palabras Clave ◽  
Grazing System

Reproductive performance of Gyr dairy cows in a grazing system of the Ecuadorian Tropic Resumen El objetivo del trabajo fue evaluar la eficiencia reproductiva en vacas lecheras Gyr en condiciones de pastoreo del trópico ecuatoriano. Se utilizaron datos retrospectivos desde el 2016 al 2018 de la Hacienda Casa Blanca del cantón Olmedo provincia de Manabí – Ecuador. Se utilizaron 98 vacas multíparas Gyr para el estudio que tuvieron fecha de parto registrada en los años analizados. El intervalo parto-parto presentó valores promedio de 420,5 ± 7,1 días, días de secas 210,5 ± 7,1 e intervalo parto concepción de 150,5 ± 7,1 días. Se observó que existió una tendencia que los partos no mantengan la misma distribución en el año acumulándose a finales de la época seca. Se concluye que las vacas analizadas, para este establecimiento y años utilizados, mostraron valores más bajos de intervalo entre partos según la bibliografía consultada, aunque aún se debería seguir trabajando para llegar al óptimo de un parto al año. Palabras clave: vacas Gyr; intervalo parto-parto; intervalo parto concepción; días de seca. Abstract The objective of the work was to evaluate the reproductive efficiency through in Gyr dairy cows under grazing conditions of the ecuadorian tropic. Retrospective data from 2016 to 2018 from the Hacienda Casa Blanca canton Olmedo province of Manabí – Ecuador. Were used 98 Gyr multiparous cows were used for the study that had a safe calving date in the years analyzed. The calving-calving interval presented average values of 420,5 ± 7,1 days dry days 210,5 ± 7,1 and calving conception interval of 150,5 ± 7,1 days. It was observed that there was a tendency for calving not to maintain the same distribution in the year, accumulating at the end of the dry season. It is concluded that the cows analyzed, for this establishment and years used, showed lower values of the interval between calving according to the bibliography consulted, although work should still continue to reach the optimum of one calving per year. Keywords: Gyr cows; calving-calving interval; calving-calving interval; dry days.

scholarly journals Recent Possibilities for the Diagnosis of Early Pregnancy and Embryonic Mortality in Dairy Cows

Animals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1666
Author(s):  
Ottó Szenci
Keyword(s):  
Blood Flow ◽  
Dairy Cows ◽  
Early Pregnancy ◽  
Fetal Mortality ◽  
Reproductive Efficiency ◽  
Interferon Tau ◽  
Early Pregnancy Factor ◽  
Pelvic Inlet ◽  
On Farm ◽  
Protein Assays

One of the most recent techniques for the on-farm diagnosis of early pregnancy (EP) in cattle is B-mode ultrasonography. Under field conditions, acceptable results may be achieved with ultrasonography from Days 25 to 30 post-AI. The reliability of the test greatly depends on the frequency of the transducer used, the skill of the examiner, the criterion used for a positive pregnancy diagnosis (PD), and the position of the uterus in the pelvic inlet. Non-pregnant animals can be selected accurately by evaluating blood flow in the corpus luteum around Day 20 after AI, meaning we can substantially improve the reproductive efficiency of our herd. Pregnancy protein assays (PSPB, PAG-1, and PSP60 RIA, commercial ELISA or rapid visual ELISA tests) may provide an alternative method to ultrasonography for determining early pregnancy or late embryonic/early fetal mortality (LEM/EFM) in dairy cows. Although the early pregnancy factor is the earliest specific indicator of fertilization, at present, its detection is entirely dependent on the use of the rosette inhibition test; therefore, its use in the field needs further developments. Recently found biomarkers like interferon-tau stimulated genes or microRNAs may help us diagnose early pregnancy in dairy cows; however, these tests need further developments before their general use in the farms becomes possible.

Reproductive Efficiency in Dairy Cows: Change in Trends!

2020 ◽  
pp. 87-138
Author(s):  
Ana Heras-Molina ◽  
José Luis Pesantez Pacheco ◽  
Susana Astiz
Keyword(s):  
Dairy Cows ◽  
Reproductive Efficiency

scholarly journals Seasonal Index and Breeding Efficiency of Red Chittagong Cattle in Bangladesh

2013 ◽  
Vol 1 (2) ◽  
pp. 55-61
Author(s):  
M. Ruhul Amin ◽  
Bhuiyan A.K.F.H ◽  
Habib M.A Habib ◽  
Khan M.A.S
Keyword(s):  
Reproductive Behavior ◽  
Reproductive History ◽  
Reproductive Efficiency ◽  
Reproductive Pattern ◽  
Calving Interval ◽  
Age At First Calving ◽  
Breeding Efficiency ◽  
On Farm ◽  
Seasonal Index

The study was aimed to observe reproductive pattern and efficiency of Red Chittagong Cattle (RCC) including reproductive history taken from two different herds; nucleus herd (on-station) and community herd (on-farm) in Mymensingh district of Bangladesh. A total of 184 calving parity records from 66 RCC cows that included 317 estrous, 164 conception and 178 calving history covering a period from 2005 to 2011 were considered for analyses. The highest frequencies of estrous, conception and calving occurred in May (13%, 15% and 14%, respectively), while the lowest in September for estrous (4%) and conception (4%) and April and June for calving (5%). The month of the year had significant (p<0.001 to p<0.05) effect on both estrous and calving but not for conception (p>0.05). There was no significant effect of season with estrous or conception or calving, but numerically highest incidence of estrous and conception in summer (36% and 38%, respectively) and calving in winter (36%) are noted. The seasonal indexes of calving in the on-station and on-farm herds were 0.73 and 0.78 respectively, with an overall mean of 0.68. The breeding or reproductive efficiency of the nucleus herd was estimated based on calving interval and age at first calving along with calving interval and the calculated results were 79 % and 82%, respectively for those two methods of estimation. The result obtained in this study indicates the reproductive behavior of RCC did not differ significantly by season, but varied with month of the year. In addition, reproductive efficiency of RCC in this study was slightly lower than that of expected.

scholarly journals The Analysis of Reproduction in Population of the Slovak Spotted Dairy Cows

2019 ◽  
Vol 67 (6) ◽  
pp. 1419-1426
Author(s):  
Jozef Bujko ◽  
Juraj Candrák ◽  
Peter Strapák ◽  
Július Žitný ◽  
Cyril Hrnčár ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Fixed Effects ◽  
Linear Models ◽  
Correlation Coefficients ◽  
Calving Interval ◽  
Factors Affecting ◽  
Actual Computation ◽  
Reproduction Traits ◽  
Days Open ◽  
Basic Statistical Analysis

The aim of study was to analyse the reproduction and factors affecting on reproduction traits of dairy cows in population of Slovak Spotted cattle from 2007 to 2016 the results for 37,274 dairy cows: days to first service (DFS), days open (DO), number of inseminations per conception (NIC), age of first calving (AFC) and calving interval (CI). The basic statistical analysis were analysed using the SAS version 9.3. For the actual computation a linear models with fixed effects was used: For the actual computation a linear models with fixed effects was used: yijklm = μ + HYSi + BTj+ Fk+ Bl +eijklm. The linear model represents coefficients determination R2 = 0.452117% (P < 0.001) for DFS, R2 = 0.377715% (P < 0.001) for DO, R2 = 0.348442% (P < 0.001) for NIC and R2 = 0.317128% (P < 0.001) for CI with all fixed effects. Correlation coefficients among DFS with DO, NIC, AFC and CI were r = 0.37275, r = -0.06881, r = 0.06493 and r = 0.08348. These coefficients were highly statistically significant (P < 0.001).

scholarly journals Investigation of Effective Factors on Calving Interval of Cows in Faryab Province

2021 ◽  
Vol 8 (2) ◽  
pp. 63-68
Author(s):  
Saifullah Saadat
Keyword(s):  
Dairy Cows ◽  
Reproductive System ◽  
Research Area ◽  
General Purpose ◽  
Point Of View ◽  
Economic Losses ◽  
Meat Production ◽  
Calving Interval ◽  
Effective Factors ◽  
Inadequate Nutrition

This research was conducted to investigate the effects of factors (Identification of female cows, timely insemination of identified begging cows, diseases related to the reproductive system and nutrition) on the calving interval of dairy cows in Faryab province. Whereas, the long interval between two deliveries due to the identification of female cows, the increase in the number of inseminations (due to the failure of previous insemination), poor nutritional management and genital infections cause a long interval between calving to retrieval of cows. In that case, it will significantly reduce milk production and livestock income, because calving interval is one of the most important indicators of reproduction and economic characteristics of dairy cows, which is the interval between two calving intervals. Under the best of circumstances, one cow gives birth to only one calf per year. Calves born are important from both the point of view of meat production and replacement of old and low-producing cows. Identifying the effective factors and their effects on the calving interval between dairy cows and preventing the economic losses of dairy farmers due to increasing the calving interval between calves are the general purpose of this research. In this research, Andkhoy, Qurghan and other Faryab districts were randomly selected from three villages in each district and 10 owners from each village, which included three districts, 9 villages and nine livestock, respectively. The results of the present research showed that the interval between calving of dairy cows in the research area was due to the untimely identification of female cows by herders, increasing the number of inseminations due to the failure of previous inseminations of diseases related to the reproductive system and inadequate nutrition. The average time after delivery for the uterus to return to its previous state was 465 days.

Associations between early lactation milk protein concentrations and the intervals to calving for Holstein cows of differing parity

2017 ◽  
Vol 57 (10) ◽  
pp. 2100 ◽  
Author(s):  
Jack Fahey ◽  
John M. Morton ◽  
Martin J. Auldist ◽  
Keith L. Macmillan
Keyword(s):  
Dairy Cows ◽  
Reproductive Performance ◽  
Milk Protein ◽  
Holstein Cows ◽  
Breeding Period ◽  
Gestation Length ◽  
Calving Interval ◽  
Early Lactation ◽  
Average Interval ◽  
Lactating Dairy Cows

High milk protein concentrations (MP%) have been positively associated with the reproductive performance of lactating dairy cows. No studies have measured the effects of this association on subsequent calving dates in multiparous cows, nor assessed whether the underlying causal mechanisms are present in nulliparous heifers. Holstein cows (primiparous = 918; multiparous = 4242) were selected from herds that had seasonally concentrated calving patterns resulting from seasonally restricted breeding periods. In seasonally calving herds, the date of a herd’s planned start of calving (PSC date) is the average gestation length of 282 days after the date that the preceding breeding period commenced, so that the interval from the herd’s PSC date to each cow’s actual calving date (PSC-to-calving interval) primarily reflects the time to conception from the start of the breeding period in the previous year. This measure was used to compare associations between the average MP% during the first 120 days of lactation and time to the calving that initiated that lactation in primiparous and multiparous cows. Early lactation MP% was negatively associated with PSC-to-calving interval. A 1% difference in MP% was associated with an 8-day difference in the average PSC-to-calving interval in primiparous cows and a 31–35-day difference in the average interval in multiparous cows. The observed associations between early lactation MP% and PSC-to-calving interval are likely to involve determinants present during a cow’s breeding period that affect the probability of conception. Some of these determinants are not restricted to early lactation as the association between MP% and PSC-to-calving interval in primiparous cows is a reflection of the reproductive performance in nulliparous heifers at ~15 months of age.

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