scholarly journals Evaluation of Failure of Oestrus Synchronization and Mass Insemination in Conception Rate of Dairy Cows in Silte Zone

2021 ◽  
Author(s):  
sharew mekonnen Haile ◽  
Tigist Wondala ◽  
Mesobework kassa
Keyword(s):  
Dairy Cattle ◽  
Dairy Cows ◽  
Capacity Building ◽  
Artificial Insemination ◽  
Mass Number ◽  
Conception Rate ◽  
Improvement Strategy ◽  
Quality Problem ◽  
Estrous Synchronization

Abstract The objective of this study was to evaluate failure of oestrus synchronization and mass insemination in the conception of dairy cattle in Silte zone. To evaluate the mechanism of the failure of OSMI conception rate we have collected (HF, jersey, and HF×Boran breed semen) from the three districts and evaluated their quality in NAGII laboratory thereafter bought 1000 qualified HF semen straw and distributed in the 3 districts. 150 cows were brought by farmers for services, and from those cows 130 cows were fulfil the precondition for this program and injected them with 2 ml of PGF2 alpha hormone. Among the 130 injected cows, 72 (55.38%) of them were responded from day 2 up to day 3 after hormone treated and then inseminated them. The lower percentages of conception rate which was observed in this study were associated with low number of AIT and mass number of cows provided during OSMI program, lack of awareness about heat detection, lack of inseminator equipment and cows did not properly managed after hormone and semen administered as we evaluated. As a result, the quality of semen in Dalocha and Sankura districts was facing with quality problem. We have checked the AITs efficiency through placing six cow per AIT thereafter they inseminated them. As a result, there was no AIT efficiency difference on conception rate based on their working experience in this study. Generally, there is a great need of skilled and experienced technician and capacity building of farmers in heat detection, husbandry practices, and good handling practice of semen in the office and improvement strategy. Therefore, improvement in facilities and management should be necessary before implementing an effective estrous synchronization and mass artificial insemination programs.

scholarly journals Efficiency of Intravulval Lip Route of Prostaglandin F2a Administration on Estrus Synchron

2001 ◽  
Vol 6 ◽  
pp. 1
Author(s):  
A. Srikandakumar ◽  
A. Mohammed ◽  
A. AI-Abri
Keyword(s):  
Dairy Cattle ◽  
Dairy Cows ◽  
Breeding Season ◽  
Artificial Insemination ◽  
Animal Health ◽  
Conception Rate ◽  
Treatment Groups ◽  
Prostaglandin F2a ◽  
Service Conception ◽  
Different Doses

Estrus was synchronized in dairy cattle using the synthetic prostaglandin F2a (PG) analog Estnunate (Coopers Animal Health Ltd., Berkhamsed, England. UK; 250 ug/ml of cloprostenol). PG was administered by two routes at two different doses, 500 ug by im route (control) and 125 pg by intravulval lip (ivu) route (treatment). All animals were bred by artificial insemination (AI) to detected estrus using the am-pm breeding rule (BR). First service conception rate (FSCR) for all dairy cows and heifers was 70% for the control and 54% for the treatment groups (P>0.05). The FSCR was also not different (P>0.05) between Holstein (HOL) and Australian Milking Zebu (AMZ) breeds (HOL 52% and AMZ 78%). Moreover, all the animals in this study were confirmed pregnant by the end of the breeding season. In conclusion, dairy cows and heifers can be successfully synchronized using only 125 pg of cloprostenol without impairing fertility. This dose corresponds to only one fourth of the recommended dose of 500 pg of cloprostenol by the manufacturer.  

Estrous synchronization and fertility of cross-bred dairy cows using prostaglandin F2α and gonadotropin releasing hormone

2021 ◽  
pp. 171-175
Author(s):  
Abubakr O. Ismail ◽  
◽  
Erneo B. Ochi ◽  
Ambrose S. Jubara ◽  
Bakri Ahmed A/Rahim ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Artificial Insemination ◽  
Prostaglandin F2α ◽  
Fixed Time ◽  
Gonadotropin Releasing Hormone ◽  
Pregnancy Rates ◽  
Releasing Hormone ◽  
Treatment Groups ◽  
Estrous Synchronization ◽  
Descriptive Statistical Analysis

A comparative hormonal study of prostaglandin, gonadotropin releasing hormone and their combination was conducted on 30 randomly selected cross-bred dairy cows of SEMEX project for artificial insemination in Hillat Kuku, Khartoum North, Sudan. The study attempts to determine the response of the animals to hormonal induction and synchronization of estrous as well as fertility following fixed time artificial insemination. Three treatment groups of 10 cows each were undertaken. Groups 1, 2 and 3 involved administration of prostaglandin F2α (PGF2α), gonadotropin releasing hormone (GnRH) and a combination of PGF2α + GnRH, respectively. Descriptive statistical analysis was performed. The results revealed that all the three protocols induced and synchronized estrous were almost synchronous in all the treated groups. However, protocol 3 revealed a significantly (p<0.05) better result of 70% pregnancy rate compared to other two protocols that equally provided 50% pregnancy rates. The study resolves that protocol 3 be highly recommended to change the mindset of farmers about the spread of reproductive technology in Sudan. Protocols 1 and 2 provided acceptable pregnancy rates that can be enhanced with the improvement of management.

scholarly journals Influence of seasonality, timing of insemination and rectal temperature on conception rate of crossbred dairy cows

2016 ◽  
Vol 37 (1) ◽  
pp. 155 ◽  
Author(s):  
Fransérgio Rocha de Souza ◽  
Carla Cristian Campos ◽  
Natascha Almeida Marques da Silva ◽  
Ricarda Maria dos Santos
Keyword(s):  
Dairy Cows ◽  
Rectal Temperature ◽  
Artificial Insemination ◽  
Dairy Farm ◽  
Fixed Time ◽  
Conception Rate ◽  
Digital Thermometer ◽  
Pregnancy Diagnosis ◽  
Chi Squared

This study aimed to evaluate the effects of rectal temperature (RT) on conception rate (CR), as well as the effects of seasonality (spring-summer vs. autumn-winter) and timing of artificial insemination (AI) (morning vs. afternoon) on RT and CR in crossbred dairy cows (Holstein x Gyr). The experiment was conducted on a dairy farm in Centralina, MG, where 1,219 conventional and fixed-time inseminations were analyzed. The RT was measured immediately before AI using a digital thermometer. Pregnancy diagnosis was performed using ultrasonography between 28 and 60 days after AI. T The effects of seasonality and timing of AI on RT were analyzed with a Mann-Whitney U test and the effects of RT (above or below the average), seasonality and timing of AI on CR were analyzed with a Chi-squared test, both using the SAS program. The RT average was 39.4°C. Cows with RT ? 39.4°C had lower CR than cows with RT < 39.4°C (25.78% vs. 32.54%; P = 0.0096). During spring-summer, cows had higher RT (39.44°C ± 0.025 vs. 39.27°C ± 0.022; P < 0.0001) and lower CR (25.49% vs. 31.75%; P = 0.0146) compared with autumn-winter. Cows inseminated in the morning had lower RT (38.96°C ± 0.022 vs. 39.60°C ± 0.018; P < 0.0001) and higher CR (32.86% vs. 26.06%; P = 0.0102) than cows inseminated in the afternoon. In conclusion, crossbred dairy cows with rectal temperature equal to or greater than 39.4°C had lower conception rate. Moreover, rectal temperature and conception rate were affected by seasonality and insemination time.

scholarly journals Effects of GnRH, PGF2α and oxytocin treatments on conception rate at the time of artificial insemination in lactating dairy cows

2011 ◽  
Vol 56 (No. 6) ◽  
pp. 279-283 ◽  
Author(s):  
A. Gümen ◽  
A. Keskin ◽  
G. Yilmazbas-Mecitoglu ◽  
E. Karakaya ◽  
S. Cevik ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Artificial Insemination ◽  
Reproductive Tract ◽  
Female Reproductive Tract ◽  
Conception Rate ◽  
Beneficial Effects ◽  
Lactating Dairy Cows ◽  
Conception Rates ◽  
Prostaglandin F ◽  
And Control

In several studies, hormones such as gonadotropin-releasing hormone (GnRH), prostaglandins and oxytocin were used to increase pregnancy rate by inducing ovulation and improving the sperm transport in the female reproductive tract in lactating dairy cattle. The objective of this study was to compare the effects of GnRH, prostaglandin F<sub>2&alpha;</sub> (PGF<sub>2&alpha;</sub>) and oxytocin treatments at the time of artificial insemination (AI) after spontaneous oestrus on the conception rate (CR) of lactating dairy cows. Oestrus was detected by visual observations by experienced personnel. All cows (n = 430, 308 Holstein-Frisian and 122 Swedish-Red dairy cows) were inseminated based on the am/pm rule by veterinarians of the farm. After AI, cows were alternately assigned to one of the four treatment groups: (1) GnRH (n = 113); (2) PGF<sub>2&alpha;</sub> (n = 106);<br />(3) oxytocin (n = 106) and (4) non-treated control (n = 105). Pregnancy diagnosis was performed 28&ndash;34 and 58&ndash;64 days post-insemination by transrectal ultrasonography. Conception rates on days 28&ndash;34 and 58&ndash;64 were not different among GnRH (46.0%; 52/113 and 44.3%; 50/113), PGF<sub>2&alpha;</sub> (37.7%; 40/106 and 35.9%; 38/106) and control (49.5%; 52/105 and 47.6%; 50/105) groups. However, conception rates were lower (P = 0.02) in oxytocin (31.1%; 33/106 and 30.2%; 32/106) than in GnRH and control groups on days 28&ndash;34 and 58&ndash;64. Other covariant factors, such as milk production, days in milk (DIM), breed, parity, service number did not affect the conception rate. Thus, there were no beneficial effects of treatments with GnRH and PGF2&alpha; at the time of AI, and oxytocin had an adverse effect on CR in lactating dairy cows in this study.

scholarly journals Conception rate hasil inseminasi buatan menggunakan semen sexing beku pada Sapi Persilangan Ongole

2018 ◽  
Vol 28 (3) ◽  
pp. 241 ◽  
Author(s):  
Aulia Puspita Anugra Yekti ◽  
Titah Ulya Kurniaesa ◽  
Nurul Isnaini ◽  
Kuswati Kuswati ◽  
Trinil Susilawati
Keyword(s):  
Field Experiment ◽  
Estrous Cycle ◽  
Artificial Insemination ◽  
Return Rate ◽  
Conception Rate ◽  
Genetic Quality ◽  
Crossbred Cows ◽  
Materials Used

<p>Artificial Insemination (AI) is a technique that is widely used by farmers to improve the genetic quality of livestock. This method can be increased in value by using sexing semen that can regulate and produce the sex of the offspring as expected. The purpose of this study was to determine the success of AI by using frozen sexing semen on Ongole Crossbred cows in Malang Regency. The materials used were 98 Ongole crossbred cows in traditional farm of Malang Regency especially in Pakis, Tumpang, Jabung and Singosari Districts. The method used was a field experiment with two treatments: 49 cows were inseminated by using frozen sexing semen (P1) and 49 cows were inseminated by using non sexing semen (P0). The variables observed were the Non-Return Rate (NRR) value observedin 3 estrous cycle after AI and CR value based on pregnancy observation at 8 months of pregnancy. Data were analyzed descriptively and continued with a one-proportion z-test. The datashowed that the CR value on P1; P0 were 55.10% and 65, 31% respectively.furthemore, the NRR value on P1 from NRR<sub>1</sub> to NRR<sub>3 </sub>were 87,76%, 73,47% and 67,35%, while on P0 95,92%, 83,67% and 75,51% respectively.It can be conclude thatCR and NRR value of sexing semenwas lower than non sexing semen, however sexing semen can be applied for certain purposes such as producing offspring as expected</p>

scholarly journals The effect of various administration routs of D-cloprostenol at the time of artificial insemination on conception rate in dairy cattle

2021 ◽  
Vol 20 (1) ◽  
pp. 1882-1888
Author(s):  
Mohammad Javad Behzadi-Shahrbabak ◽  
Naser Shams-Esfandabadi ◽  
Abolfazl Shirazi ◽  
Taghi Taktaz-Hafshejani
Keyword(s):  
Dairy Cattle ◽  
Artificial Insemination ◽  
Conception Rate

152 EFFECT OF EMBRYO TRANSFER AFTER ARTIFICIAL INSEMINATION ON THE CONCEPTION RATE IN DAIRY COWS UNDER HEAT STRESS IN SOUTHERN JAPAN

2011 ◽  
Vol 23 (1) ◽  
pp. 179
Author(s):  
M. Tani ◽  
C. Tani ◽  
K. Tomokawa ◽  
D. Funakoshi ◽  
M. Sakatani ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Embryo Transfer ◽  
Rectal Temperature ◽  
Artificial Insemination ◽  
Fetal Loss ◽  
Conception Rate ◽  
Summer Period ◽  
Temperature Humidity Index ◽  
Southern Japan ◽  
Humidity Index

A serious decline in the reproductive performance of dairy cows occurs in southern Japan in the summer period, when the total number of hot days ≥35°C numbers more than 20 days annually. Previous reports have mentioned the effectiveness of embryo transfer (ET) at 7 days after AI (AI/ET) under heat-stressed conditions. In the present study, we investigated the effect of AI/ET on conception rate (CR) under heat-stressed conditions in the summer period. Artificial insemination was performed at 13 commercial dairies in this study from August through September in 2007 and 2008. Seven days after AI, a single embryo was transferred into the uterine horn contralateral to the ovary with a corpus luteum (AI/ET, n = 82). Artificial insemination at oestrus without further treatment was assigned as the control group (AI, n = 367). In 2007, frozen–thawed embryos of Japanese Black cattle were transferred, and the same cattle were used for ET of fresh embryos in 2008. The temperature-humidity index [0.8 × temperature + 0.01 ×relative humidity (temperature –14.4) + 46.4], rectal temperature, and diurnal highest or lowest and average ambient temperatures were measured at the time of AI and ET. Cows were diagnosed for pregnancy at 42 days after AI by palpation per rectum and were reexamined by transrectal ultrasonography at 60 days after AI. The CR was calculated as the number of cows diagnosed as pregnant 60 days after AI divided by the number of cows inseminated. Fetal loss was calculated as the number of cows that did not deliver calves after term divided by the number of cows diagnosed as pregnant. The CR, number of AI, fetal loss, and type of newborn (Holsteins, AI origin; Japanese Black, ET origin) were confirmed retrospectively. For statistical analysis, Fisher’s exact test and Student’s t-test were used for comparison of the CR, fetal loss, and body temperature by using a statistical software program for PC (Excel Statistics 2006). The CR for AI/ET was 30.4% and for AI was 13.8% in 2007 (P < 0.01), and the CR for AI/ET was 30.8% and for AI was 21.5% in 2008 (P = 0.294). The average diurnal temperature was 31.1°C in 2007 and 30.1°C in 2008, and the temperature-humidity index was 81.8 and 80.8, respectively. On Day 8, the pregnant cows had a lower rectal temperature than the open cows in 2007, but not in 2008 (38.9 v. 39.4°C in 2007; P < 0.05; and 39.1 v. 38.9°C in 2008; P > 0.05). The fetal loss was 38.1% in AI/ET v. 7.4% in AI in 2007 (P < 0.05) and 12.5% v. 0% in 2008 (P < 0.05), respectively. The AI/ET procedure could improve CR in dairy cows during the summer period in southern Japan. However, other problems may accompany AI/ET, such as higher fetal losses.

scholarly journals Oestrus synchronisation in postpartum dairy cows using repetitive prostaglandin doses: Comparison between D-cloprostenol and dinoprost

2015 ◽  
Vol 63 (1) ◽  
pp. 79-88
Author(s):  
Carlos Pérez-Marín ◽  
Jose Sánchez ◽  
Guillermo Vizuete ◽  
Luis Quintela ◽  
Laura Molina
Keyword(s):  
Dairy Cattle ◽  
Dairy Cows ◽  
Reproductive Performance ◽  
Artificial Insemination ◽  
Post Partum ◽  
Study Groups ◽  
Pregnancy Rates ◽  
Group Differences ◽  
Group A ◽  
Group B

This trial evaluated the reproductive performance in an early routine oestrus induction programme using two different PGF2α preparations in dairy cattle. D-cloprostenol sodium (n = 192; Group A) or dinoprost (n = 187; Group B) was administered between days 35 and 42 post partum. Also, a group of non-treated cows (n = 135; Group C) was included as control. Pedometers were used to detect oestrus, and also secondary oestrous signs and vaginal mucus quality were assessed prior to artificial insemination (AI). When oestrus was not detected for 14 days after PGF2α administration, the treatment was repeated, up to a maximum of three times. There were no differences between the study groups in oestrus detection (A = 73.48%, B = 73.01%, C = 79.26%; P = 0.428), good mucus quality (A = 96.45%, B = 91.30%, C = 93.45%; P = 0.203) and the presence of mounting lesions (A = 98.58, B = 94.93%, C = 98.13; P = 0.414). First-service pregnancy rates were 19.78%, 15.64% and 32.03% in Groups A, B and C, respectively (P = 0.003). There were no inter-group differences for the interval from parturition to first AI. However, a significantly shorter interval from parturition to conception (92.17 days, 99.45 days, 118.93 days; P = 0.002) and significantly less services per conception (2.12, 2.18, 2.66; P = 0.003) were observed in Groups A and B in comparison with Group C. The use of PGF2α resulted in better fertility in a repetitive, routine postpartum programme, although no differences between Dcloprostenol and dinoprost were detected.

Seasonal Influence on Post Thaw Seminal Attributes and Conception Rate from Semen of Jaffarabadi Buffalo Bulls

2020 ◽  
Author(s):  
K.H. Parmar ◽  
P.H. Tank ◽  
F.S. Kavani
Keyword(s):  
Artificial Insemination ◽  
Semen Quality ◽  
Summer Season ◽  
Conception Rate ◽  
Seasonal Influence ◽  
Abnormal Sperm ◽  
The Mean ◽  
Live Sperm ◽  
One Year

Background: The quality of the frozen thawed semen is one of the most powerful factor affecting the conception rate in a buffaloes. The season may have its effect on post thaw seminal attributes and fertility. Therefore, current study was aimed to investigate the effect of winter and summer seasons on post thaw seminal attributes and conception rate from semen of Jaffarabadi buffalo bulls.Methods: The study was conducted on four Jaffarabadi breeding bulls, 5-6 years old, to know the post-thaw semen characteristics based on total of 192 semen ejaculates evaluated and cryopreserved over one year period. Result: The mean percentages of post-thaw motility, live sperm, abnormal sperm, HOST reactive sperm, acrosomal integrity and first AI conception rate for semen cryopreserved during winter were 58.85±0.56, 67.06±0.77, 8.62±0.43, 58.52±0.67, 75.22±0.27 and 45.75±0.21, respectively, whereas, corresponding values for semen cryopreserved during summer were 56.35±0.43, 65.62±0.76, 9.08±0.51, 55.43±0.60, 74.29±0.22 and 43.50±0.11. The semen quality of post thawed samples were observed better during winter compared to summer season for artificial insemination with satisfactory first AI conception rate.

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