scholarly journals Efficacy of different estrus synchronization protocols on estrus induction response and conception rate in acyclic and cyclic crossbred cows

2019 ◽  
Vol 72 (2) ◽  
pp. 202-207
Author(s):  
AR Prajapati ◽  
AJ Dhami ◽  
KK Hadiya ◽  
JA Patel ◽  
JP Prajapati
Keyword(s):  
Conception Rate ◽  
Estrus Synchronization ◽  
Crossbred Cows

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>

Monitoring Plasma Metabolic Profile, Fertility in Normal and Estrus Synchronized Suckled Kankrej Cows

2021 ◽  
Author(s):  
Mehrajuddin Naikoo ◽  
A.J. Dhami ◽  
B.C. Parmar
Keyword(s):  
Total Cholesterol ◽  
Metabolic Profile ◽  
Conception Rate ◽  
Plasma Metabolites ◽  
Control Group ◽  
Zebu Cattle ◽  
Estrus Synchronization ◽  
Treatment Protocols ◽  
Mean Values ◽  
The Mean

Background: Postpartum fertility in dairy bovines is one of the important criteria of sustainable dairy industry and economy of farmers. The Kankrej, a dual purpose zebu cattle, is known for its endurance, but is slow breeder with very late maturity, prolonged postpartum anestrous/subestrous and thereby calving interval. These peculiarities necessitate scientists to adopt fixed time AI (FTAI) protocols of estrus synchronization for improving their reproductive efficiency. Hence this study was aimed to assess the fertility and plasma metabolic profile of normal and synchronized anestrous/ subestrous suckled Kankrej cows of an organized farm.Methods: The study involved 36 parturient Kankrej cows of the University Farm that were maintained under identical nutritional and managerial practices. Blood samples were collected in heparinized vacutainers from all the animals on the day of calving and then at 10 days interval till 90 days for plasma metabolic profile. Animals monitored by per rectal palpation 10 days apart around day 70-80 postpartum revealed 30 cows to be anestrous or subestrous, which were randomly allocated to five different estrus synchronization protocols at day 90-92, each with six cows and a group of six cows that exhibited estrus and were bred by day 70-90 served as normal control. The treatment protocols included Ovsynch, CIDR, Ovsynch + CIDR, Cosynch and double PGF2α together with estimation of plasma metabolites on day 0, 7, 9/10 (AI) and then at 10 days interval up to day 40 post-AI. Result: The mean plasma total protein levels varied non-significantly, while total cholesterol and triglycerides varied significantly (p less than 0.01) between intervals until 90 days postpartum in most of the groups with gradual increase in the mean values from the day of calving. The estrus synchronization protocols, however. did not alter the plasma profile of these constituents. The estrus induction response with Ovsynch, CIDR, Ovsynch + CIDR, Cosynch and PGF2α treatment was 66.66, 83.33, 50.00, 66.66 and 66.66% and the conception rates at induced estrus 16.66, 33.33, 16.66, 50.00 and 50.00%, respectively. In normal cyclic control group, the conception rate at first cycle was 33.33%. The plasma total cholesterol and triglycerides were higher in conceived than non-conceived cows, particularly during early postpartum period and post-AI. It was concluded that CIDR, Cosynch and PGF2α protocols were better for estrus induction and conception rate in anestrous and subestrous suckled Kankrej cows, although they did not influence the plasma metabolic profile.

Melengestrol acetate, estradiol-17β and GnRH for synchronization of estrus and ovulation in beef cows

1999 ◽  
Vol 79 (1) ◽  
pp. 39-43 ◽  
Author(s):  
J. Thundathil ◽  
J. P. Kastelic ◽  
W. O. Olson ◽  
R. B. Cook ◽  
R. J. Mapletoft
Keyword(s):  
Key Words ◽  
Pregnancy Rate ◽  
Beef Cows ◽  
Pregnancy Rates ◽  
Conception Rate ◽  
Estrus Synchronization ◽  
Short Term ◽  
Melengestrol Acetate ◽  
Conception Rates ◽  
Estradiol 17Β

Three experiments were conducted with suckled crossbred beef cows to determine the efficacy of various short-term regimens for synchronizing estrus or ovulation and to determine whether feeding melengestrol acetate (MGA) after timed AI will increase pregnancy rate. In exp. 1, all cows (n = 141) were given 0.5 mg MGA head−1 d−1 for 7 d (days 1 to 7), 1 or 5 mg E17β (and 100 mg progesterone) or 100 µg GnRH on day 1, and 500 µg cloprostenol on day 7. There were no significant differences among groups for estrous or synchronized conception rates (average, 84.4 and 52.1%, respectively). With an identical protocol in exp. 2 (78 cows), by day 11, cows given 5 mg E17β had the highest estrous and synchronized pregnancy rates (65.4 and 42.3%), compared to 1 mg E17β (46.2 and 15.4%) and GnRH (34.6 and 11.5%). Cows not detected in estrus were timed-inseminated and given 100 µg GnRH, 100 h after cloprostenol. There were no significant differences among groups for synchronized conception rate to timed AI (65.0%) or synchronized pregnancy rate to all inseminations (56.4%). Overall, 5 mg E17β gave the most consistent results. In exp. 3, 84 cows were given 100 µg GnRH on days 1 and 9, 500 µg cloprostenol on day 7, and were timed-inseminated on day 10. Half were fed MGA (0.5 mg head−1 d−1) on days 16 to 22, but the pregnancy rate was not different from that in the remaining cows (55.0 versus 47.8%, P > 0.5). Key words: Ovary, follicles, estrus synchronization, beef cows

scholarly journals Efficacy of Estrus Synchronization Protocols during Summer and Winter Seasons together with Biochemical and Minerals Profile in Anoestrus Crossbred Cows

2017 ◽  
Vol 13 (01) ◽  
Author(s):  
D.N. Borakhatariya ◽  
M. T. Panchal ◽  
A. J. Dhami ◽  
K. K. Hadiya ◽  
R. M. Kalasariya
Keyword(s):  
Plasma Concentrations ◽  
Winter Season ◽  
Fixed Time ◽  
Summer Season ◽  
Estrus Synchronization ◽  
Crossbred Cows ◽  
Protein Levels ◽  
Conception Rates ◽  
Calcium Phosphorus ◽  
Heat Stress Condition

The estrus induction and fertility response along with biochemical and minerals profile of >90 days postpartum anoestrus crossbred cows following use of different estrus synchronization protocols was investigated during summer and winter seasons. The true anoestrus cows selected (n=43 in summer, n=40 in winter) were randomly treated with Ovsynch, Heatsynch and PRID protocols keeping 10 animals as control in both the seasons. During summer season, the estrus induction response with Ovsynch, Heatsynch and PRID protocol was 80, 90 and 80 %; while in winter season, the response was 100% with all three protocols. In summer season, the conception rates with Ovsynch, Heatsynch and PRID protocols at induced estrus were 30, 20 and 20 %and those of 3 cycles 60, 40 and 50 %, respectively, while in winter season, the conception rates at induced estrus were 45.45, 27.27 and 36.36 % and overall of 3 cycles 72.72, 45.45 and 63.64%, respectively. The overall mean plasma concentrations of total cholesterol (mg/dl) in anoestrus cows under Ovsynch, Heatsynch and PRID protocols were 171.57±4.75, 190.97±4.90 and 184.93±3.10 during winter and 163.73±4.96, 162.87±11.24 and 177.63±7.98 during summer, respectively. The corresponding values for plasma total protein (g/dl) during winter season were 7.77±0.11, 7.90±0.12and7.51±0.14, and in summer season 7.90±0.14, 8.02±0.67 and 8.32±0.10, respectively. The cholesterol levels were insignificantly lower and protein levels were significantly higher in summer than winter season, particularly in non-conceived cows. Among the minerals profiles, i.e. calcium, phosphorus and magnesium, only the calcium levels were significantly higher during winter and in conceived cows as compared to counter parts. In conclusion, the results showed that estrus synchronization with fixed time insemination protocols can augment fertility in anoestrus crossbred cows under favorable as well as heat stress condition, and the response is better with Ovsynch and PRID protocols without influencing much the blood metabolic profil

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