Pregnancy Loss (28–110 Days of Pregnancy) in Holstein Cows: A Retrospective Study
The objective of this retrospective study was to investigate the prevalence of pregnancy loss (PL; between 28–110 pregnancy days) and its relationship with factors: farm, year (2015–2018), season, artificial insemination (AI)-rank, parity, AI-type (fixed-time vs. oestrus-AI), previous PL, days in mi...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-05-01
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| Series: | Animals |
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| Online Access: | https://www.mdpi.com/2076-2615/10/6/925 |
| _version_ | 1797566956983812096 |
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| author | Aitor Fernandez-Novo Octavi Fargas Juan Manuel Loste Francisco Sebastian Natividad Perez-Villalobos Jose Luis Pesantez-Pacheco Raquel Patron-Collantes Susana Astiz |
| author_facet | Aitor Fernandez-Novo Octavi Fargas Juan Manuel Loste Francisco Sebastian Natividad Perez-Villalobos Jose Luis Pesantez-Pacheco Raquel Patron-Collantes Susana Astiz |
| author_sort | Aitor Fernandez-Novo |
| collection | DOAJ |
| description | The objective of this retrospective study was to investigate the prevalence of pregnancy loss (PL; between 28–110 pregnancy days) and its relationship with factors: farm, year (2015–2018), season, artificial insemination (AI)-rank, parity, AI-type (fixed-time vs. oestrus-AI), previous PL, days in milk (DIM), fixed-time-AI protocol, AI-technician, bull, and semen-type (sexed vs. conventional). Data of 19,437 Holstein cattle AIs from eight Spanish farms were studied. Overall conception rate was 34.3% (6696/19,437) and PL 12.3% (822/6696). The PL was more likely to occur in primiparous (10.8%, odds ratio (OR) = 1.35; <i>p</i> = 0.04) and multiparous (15.3%; OR = 2.02, <i>p</i> < 0.01) than in heifers (PL = 6.9%, reference). Pregnancies achieved with AI after observed oestrus and natural breedings were associated with less PL than pregnancies after fixed-time-AI (12.7 vs. 11.9%; OR = 0.12, <i>p</i> = 0.01). First AIs related to higher PL than ≥2nd AIs (PL = 13.8% vs. 11.2; OR = 0.73, <i>p</i> < 0.01). The factors season, fixed-time-AI protocol, DIM, bull, AI-technician, or type of semen were not significantly associated with PL. Therefore, farmers and consultants should adapt their preventive strategies relating to PL, particularly, to the parity of the cattle. |
| first_indexed | 2024-03-10T19:34:49Z |
| format | Article |
| id | doaj.art-81e5401b9c6f48d7a7b0431fcad7822a |
| institution | Directory Open Access Journal |
| issn | 2076-2615 |
| language | English |
| last_indexed | 2024-03-10T19:34:49Z |
| publishDate | 2020-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Animals |
| spelling | doaj.art-81e5401b9c6f48d7a7b0431fcad7822a2023-11-20T01:49:00ZengMDPI AGAnimals2076-26152020-05-0110692510.3390/ani10060925Pregnancy Loss (28–110 Days of Pregnancy) in Holstein Cows: A Retrospective StudyAitor Fernandez-Novo0Octavi Fargas1Juan Manuel Loste2Francisco Sebastian3Natividad Perez-Villalobos4Jose Luis Pesantez-Pacheco5Raquel Patron-Collantes6Susana Astiz7Dpto. Producción y Sanidad Animal, Salud Pública Veterinaria y Ciencia y Tecnología de los Alimentos, Facultad de Veterinaria, Universidad CEU Cardenal Herrera, C/Tirant lo Blanc, 7, 46115 Alfara del Patriarca, Valencia, SpainVAPL S.L., C/Antoni Figueras 20, 08551 Tona, Barcelona, SpainAkaborro s/n., 31860 Navarra, SpainCowvet SL, Avda. País Valenciano 6, 5, 46117 Betera, Valencia, SpainFacultad de Ciencias Biomédicas, Universidad Europea de Madrid, C/Tajo s/n, 28670 Villaviciosa de Odón, Madrid, SpainSchool of Veterinary Medicine and Zootechnics, Faculty of Agricultural Sciences, University of Cuenca, Avda. Doce de Octubre, 010150 Cuenca, EcuadorTRIALVET S.L., C/Encina 22, Cabanillas de la Sierra, 28721 Madrid, SpainDpto. Reproducción Animal (INIA), Avda. Puerta de Hierro s/n., 28040 Madrid, SpainThe objective of this retrospective study was to investigate the prevalence of pregnancy loss (PL; between 28–110 pregnancy days) and its relationship with factors: farm, year (2015–2018), season, artificial insemination (AI)-rank, parity, AI-type (fixed-time vs. oestrus-AI), previous PL, days in milk (DIM), fixed-time-AI protocol, AI-technician, bull, and semen-type (sexed vs. conventional). Data of 19,437 Holstein cattle AIs from eight Spanish farms were studied. Overall conception rate was 34.3% (6696/19,437) and PL 12.3% (822/6696). The PL was more likely to occur in primiparous (10.8%, odds ratio (OR) = 1.35; <i>p</i> = 0.04) and multiparous (15.3%; OR = 2.02, <i>p</i> < 0.01) than in heifers (PL = 6.9%, reference). Pregnancies achieved with AI after observed oestrus and natural breedings were associated with less PL than pregnancies after fixed-time-AI (12.7 vs. 11.9%; OR = 0.12, <i>p</i> = 0.01). First AIs related to higher PL than ≥2nd AIs (PL = 13.8% vs. 11.2; OR = 0.73, <i>p</i> < 0.01). The factors season, fixed-time-AI protocol, DIM, bull, AI-technician, or type of semen were not significantly associated with PL. Therefore, farmers and consultants should adapt their preventive strategies relating to PL, particularly, to the parity of the cattle.https://www.mdpi.com/2076-2615/10/6/925reproductive strategyparityseasonrank of AItype of AI |
| spellingShingle | Aitor Fernandez-Novo Octavi Fargas Juan Manuel Loste Francisco Sebastian Natividad Perez-Villalobos Jose Luis Pesantez-Pacheco Raquel Patron-Collantes Susana Astiz Pregnancy Loss (28–110 Days of Pregnancy) in Holstein Cows: A Retrospective Study Animals reproductive strategy parity season rank of AI type of AI |
| title | Pregnancy Loss (28–110 Days of Pregnancy) in Holstein Cows: A Retrospective Study |
| title_full | Pregnancy Loss (28–110 Days of Pregnancy) in Holstein Cows: A Retrospective Study |
| title_fullStr | Pregnancy Loss (28–110 Days of Pregnancy) in Holstein Cows: A Retrospective Study |
| title_full_unstemmed | Pregnancy Loss (28–110 Days of Pregnancy) in Holstein Cows: A Retrospective Study |
| title_short | Pregnancy Loss (28–110 Days of Pregnancy) in Holstein Cows: A Retrospective Study |
| title_sort | pregnancy loss 28 110 days of pregnancy in holstein cows a retrospective study |
| topic | reproductive strategy parity season rank of AI type of AI |
| url | https://www.mdpi.com/2076-2615/10/6/925 |
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