Urine levels of luteinizing hormone as predictor of the period of ovulation for advantage of timed-artificial insemination in murrah buffalo (Bubalus bubalis )

2017 ◽  
Vol 52 (3) ◽  
pp. 517-521 ◽  
Author(s):  
RM Selvam ◽  
D Singh ◽  
MA Akbarsha ◽  
G Archunan
Keyword(s):  
Luteinizing Hormone ◽  
Artificial Insemination ◽  
Bubalus Bubalis ◽  
Murrah Buffalo ◽  
Timed Artificial Insemination ◽  
Urine Levels

14 CONCEPTION RATE OF BUFFALO HEIFERS TREATED WITH OESTRADIOL CYPIONATE TO INDUCE OVULATION IN TIMED ARTIFICIAL INSEMINATION PROGRAMS

2014 ◽  
Vol 26 (1) ◽  
pp. 121
Author(s):  
D. G. Souza ◽  
A. Martins ◽  
E. Oba ◽  
A. S. Camargos ◽  
E. P. Moreira ◽  
...  
Keyword(s):  
Artificial Insemination ◽  
Bubalus Bubalis ◽  
Control Group ◽  
San Jose ◽  
Animal Science ◽  
Treatment Groups ◽  
Chi Squared ◽  
Timed Artificial Insemination ◽  
Animal Handling ◽  
Intravaginal Device

Reducing animal handling and costs in timed artificial insemination (TAI) systems are of great interest in animal production, regardless of the species. Thus, this study was carried out to investigate the effects of administering oestradiol cypionate (EC) or hCG to induce ovulation in buffalo (Bubalus bubalis) in TAI programs. The 79 Bufalipso heifers housed at Institute of Animal Science, San José de las Lajas, Cuba, were, on average, 24 months of age with a body weight of 310 to 380 kg at the beginning of the experiment. The investigation was conducted out of the breeding season (25 June through 28 July 2012). Heifers were randomly assigned to 1 of 3 treatment groups; either hCG (control group) or EC1 and EC2, in which TAI was performed at either 48 or 56 h after the EC injection, respectively. On the first day of the treatment regime (Day 0), animals received oestradiol benzoate (2 mg i.m.; Sincrodiol®, Ourofino, Brazil), followed by the insertion of an intravaginal device containing 1 g of progesterone (Primer®, Tecnopec, São Paolo, Brazil). On Day 9, an intramuscular luteolytic dose of cloprostenol (500 μg; Ciosin®, Intervet, Brazil) and eCG (500 UI; Novormon®, Intervet) were given in all heifers along with the removal of the intravaginal device. On the same day, 0.5 mg of EC (ECP®, Pfizer, Brazil) was administered intramuscularly in the EC1and EC2 groups. Animals in the hCG group received hCG (1000 IU i.m.; Vetecor®, Hertape Calier, Spain) on Day 11 and were inseminated 14 h later. Pregnancy diagnosis was performed by ultrasound 35 days after TAI. Data were analysed by a chi-squared test, with P < 0.05 taken as significant. There were no differences among treatment groups, with values of 57.7 (15/26), 60.7 (17/28), and 64% (16/25) for the EC1, EC2, and hCG groups, respectively. In conclusion, oestradiol cypionate was effective at inducing ovulation in buffalo heifers in TAI programs comparable to the control group, as evidenced by the conception rates. In addition, animals subjected to the EC protocol pass just 3 times through the corral instead of 4 when receiving hCG, which decreases the animal handling and costs.

Exploration of Luteinizing hormone in murrah buffalo ( Bubalus bubalis ) urine: Extended surge window opens door for estrus prediction

2017 ◽  
Vol 251 ◽  
pp. 121-126 ◽  
Author(s):  
Ramu Muthu Selvam ◽  
Suneel Kumar Onteru ◽  
Varij Nayan ◽  
Muthusamy Sivakumar ◽  
Dheer Singh ◽  
...  
Keyword(s):  
Luteinizing Hormone ◽  
Bubalus Bubalis ◽  
Murrah Buffalo
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