Factors Affecting Conception Rate in AI Bred Cattle under Field Conditions of Maharashtra

Abstract

Data on 98336 artificial inseminations (AI) performed during 6 years (January 2010 to November 2015) on 56037 field animals owned by 29097 farmers’ from 44 cattle development centres spread across two districts of Maharashtra state were collected and analyzed. Whole data set was classified according to districts (Beed, Jalgaon), economic status of farmers (APL, BPL), animal breed (HF cross, Indigenous, Jersey cross, Non-descript), parity of animal (heifer, first, second, third, fourth, fifth calvers), animal body condition score (no rib exposed, one rib exposed, two ribs exposed, three ribs exposed), heat stage (early, mid, late), season of AI (rainy-June to September, winter-October to January, summer-February to May), bull breed used for AI ( HF, HF crossbreed, Jersey, Jersey crossbreed, Indigenous), AI sequence number (1,2,3) and AI Year (2010 to 2015). Least square analysis was used to compute conception rate. The results revealed overall mean conception rate as 46.2 ± 0.51% and it was significantly (p les than 0.01) higher in Beed district, Jersey crossbreed animals, animals having fourth parity, animals exhibiting one rib exposed, early heat and animals inseminated with Indigenous breed bulls semen, first AI sequence number and during the year 2015 compared with respective groups of parameters under study. However, effect of season of AI and economic condition of farmers did not affect conception rate in animals under field conditions of Maharashtra.

Effect of mineral supplementation on incidence of reproduction disturbances and fertility parameters in Polish Holstein-Friesian cows

“…First service pregnancy rate is an indicator which determine the quality of artificial insemination in herds. The first service pregnancy rate of approximately 38% observed in this study in control groups (Table 2), was lower to that of animals from Maharashtra (Potdar et al 2020). In this study after mineral supplementation, the average effectiveness of the first service pregnancy rate increased.…”

Cellular and Molecular Insights Into the Etiology of Subfertility/Infertility in Crossbred Bulls (Bos taurus × Bos indicus): A Review

“…The incidence of sub-fertility/infertility in crossbred bulls is high compared to purebred bulls. Sire conception rate was higher in indigenous bulls (51.1%, based on 15558 AI), compared to Holstein Friesian crossbred (47.1%, based on 47396 AI) and Jersey crossbred (43.5%, based on 2751 AI) bulls ( Potdar et al, 2020 ). Another study also reported lower conception rates in crossbred bulls (41.36% in HF crossbred and 39.84% in Jersey crossbred) compared with indigenous (54.26% in Dangi and 45.23% in Khillar) and exotic (44.05% in HF and 42.22% in Jersey) purebred bulls ( Potdar et al, 2016 ).…”