Determinants of pregnancy success following fixed-time artificial insemination in Nelore cows under field conditions: a large-scale study
Arthur Ribeiro Torres, Milena Alves da Silva, Wilson Júnior Alcebíades, Adalfredo Rocha Lobo Júnior, Thiago Vasconcelos Melo, Jeanne Broch Siqueira · 2026
Read Determinants of pregnancy success following fixed-time artificial insemination in Nelore cows under field conditions: a large-scale study by Arthur Ribeiro Torres, Milena Alves da Silva, Wilson Júnior Alcebíades, Adalfredo Rocha Lobo Júnior, Thiago Vasconcelos Melo, Jeanne Broch Siqueira (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-13541846.txt.
Description
Arthur Ribeiro Torres and co-authors find what drives pregnancy success in Nelore cows in 2026. Fixed-time insemination is standard in Brazilian beef herds, but field results vary. Records from many farms can show which factors truly matter.
More than thirty-one thousand females on one hundred nine farms entered the analysis. The overall pregnancy rate was about fifty-two percent, equal for heifers and grown cows. Body condition mattered only in grown cows, where fat cows beat thinner ones clearly. The day the hormone device came out did not matter. A fourth reuse of the device lowered odds in grown cows, the study finds.
Catalog record
| CREATOR | Arthur Ribeiro Torres, Milena Alves da Silva, Wilson Júnior Alcebíades, Adalfredo Rocha Lobo Júnior, Thiago Vasconcelos Melo, Jeanne Broch Siqueira |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 23 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |