Identification of Loci and Pathways Associated with Heifer Conception Rate in U.S. Holsteins [PDF]
Genes, 2020 Heifer conception rate (HCR) is defined as the percentage of inseminated heifers that become pregnant at each service. The genome-wide association analyses in this study focused on identifying the loci associated with Holstein heifer (n = 2013 ...
Christopher Seabury +2 more
exaly +3 more sources
An investigation of the time period within which frozen-thawed semen delivers a high conception rate in lactating dairy cows [PDF]
The Journal of Reproduction and Development, 2020 We determined the length of time within which frozen-thawed semen delivered a high conception rate in present-day lactating dairy cows. The cows utilized were a total 100 milking Holstein-Friesian cows kept in tie-stall style farms.
Toshiaki SUMIYOSHI +2 more
doaj +3 more sources
Efficiency evaluation of two estrus synchronization protocols in estrus response and conception rate of dairy cows in the Dalocha district, Ethiopia. [PDF]
Heliyon, 2023 The study aimed to determine the effectiveness of single and double-shot estrus synchronization protocols on conception and estrus response rates in dairy cows.
Haile SM, Abebe BK, Tesfa TW.
europepmc +2 more sources
Effects of age and season on conception rate of Mediterranean Italian Dairy Buffalo (Bubalus bubalis) following oestrus synchronization and fixed-time artificial insemination. [PDF]
Reprod Domest Anim, 2021 The objective of this project was to report the effects of season and age on conception rate amongst Italian Mediterranean Buffalo subjected to an Ovsynch/Resynch (O/R) reproductive management protocol.
Otava G +7 more
europepmc +2 more sources
Jurnal Medik Veteriner, 2022 This study aimed to determine the number of reproductive efficiency parameters including service per conception, conception rate, calving rate, and non-return rate for broilers in Kalipuro District, Banyuwangi Regency.
Ahmad Rajul Dinul +5 more
doaj +2 more sources
Identification of loci associated with conception rate in primiparous Holstein cows. [PDF]
BMC Genomics, 2019 Subfertility is a major issue facing the dairy industry as the average US Holstein cow conception rate (CCR) is approximately 35%. The genetics underlying the physiological processes responsible for CCR, the proportion of cows able to conceive and ...
Kiser JN +6 more
europepmc +2 more sources
Influences of sire conception rate on pregnancy establishment in dairy cattle. [PDF]
Biol Reprod, 2018 Establishment of pregnancy in cattle is complex and encompasses ovulation, fertilization, blastocyst formation and growth into an elongated conceptus, pregnancy recognition signaling, and development of the embryo and placenta.
Ortega MS +6 more
europepmc +2 more sources
Studies on factors influencing conception rate in rural cattle
Indian Journal of Animal Sciences, 2016 The data of 14,937 farmers spread over 29 tehsils in 15 districts of six Indian states revealed mean conception rate as 55.96±0.31 %. State wise conception rate recorded in Bihar was 51.08±0.73%; Jharkhand; 62.03±0.63%; Maharashtra, 56.64±0.74%; Odisha,
R L BHAGAT, S B GOKHALE
doaj +2 more sources
Risk factors limiting first service conception rate in dairy cows and their economic impact. [PDF]
Asian-Australas J Anim Sci, 2019 Objective We determined the risk factors limiting first service conception (FSC) rate in dairy cows and their economic impact. Methods Data were collected from 790 lactations regarding cow parity, peri- and postpartum disorders, body condition score (BCS)
Kim IH, Jeong JK.
europepmc +2 more sources
Whole-genome scan reveals significant non-additive effects for sire conception rate in Holstein cattle. [PDF]
BMC Genet, 2018 Service sire has a considerable impact on reproductive success in dairy cattle. Most gene mapping studies for bull fertility have focused on additive effects, while non-additive effects have been largely ignored. The main goal of this study was to assess
Nicolini P +3 more
europepmc +2 more sources