Association between genomic daughter pregnancy rate and expected milk production on the resumption of estrus behavior in Holstein cattle
ABSTRACT: The objective of this observational study was to evaluate estrous expression at the first estrus occurring between 7 to 30 d in milk (DIM), as detected by an automated activity monitor (AAM), and its association with genomic daughter pregnancy rate (GDPR) and genomic expected milk producti...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-03-01
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| Series: | Journal of Dairy Science |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0022030223007282 |
| _version_ | 1797291858395660288 |
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| author | A.M.L. Madureira J.L. Plenio J.L.M. Vasconcelos T.G. Guida R.L.A. Cerri S. Borchardt |
| author_facet | A.M.L. Madureira J.L. Plenio J.L.M. Vasconcelos T.G. Guida R.L.A. Cerri S. Borchardt |
| author_sort | A.M.L. Madureira |
| collection | DOAJ |
| description | ABSTRACT: The objective of this observational study was to evaluate estrous expression at the first estrus occurring between 7 to 30 d in milk (DIM), as detected by an automated activity monitor (AAM), and its association with genomic daughter pregnancy rate (GDPR) and genomic expected milk production (GEM) in lactating dairy cows. A total of 4,119 lactations from 2,602 Holstein cows were included. Cows were enrolled as first lactation (n = 1,168), second lactation (n = 1,525) and third and greater lactation (n = 1,426). Hair samples were collected from the tail switch, and cows were genotyped using an SNP platform (Clarifide, Zoetis, São Paulo, SP, Brazil). Postpartum cows were examined daily by the farm personnel from calving until 10 DIM. Calving was classified as assisted (forced calf extraction) and unassisted (normal calving). Retained fetal membranes (RFM), hyperketonemia (KET), and left displaced abomasum (LDA) were also recorded. Mean GDPR (± SD) was −0.29 ± 1.4, and the intensity and duration of the first estrus event was 15.9 ± 13.1 x-factor (intensity unit measurement) and 11.1 ± 3.8 h, respectively. Cows that had greater GDPR had greater intensity and longer duration of estrus at the alert, independent of parity. Overall resumption of estrous expression, between 7 to 30 DIM, was 41.2% (1,695/4,119), where 58.8% (2,424/4,119) did not have an estrus event, 31.0% (1,274/4,119) of cows had one event of estrus, and 10.2% (421/4,119) of cows had 2 or more events of estrus early postpartum. Mean DIM (± SD) at first estrus event, detected by the AAM, was 19.4 ± 4.4 d. Days in milk at first event for cows with one event was 20.7 ± 1.6 d and 15.9 ± 3.1 d for cows with 2 or more events of estrus. First lactation cows were more likely to have an estrus event early postpartum when compared with second and third and greater lactation cows (45.2 ± 1.4% [530/1168] vs. 41.6 ± 1.3% [636/1525] vs. 37.2 ± 1.3% [529/1426], respectively). There was an interaction of parity and GDPR on the proportion of cows demonstrating an early postpartum estrus. There was no difference in the proportion of cows with an early postpartum estrus between those with assisted or unassisted calving, RFM, or LDA. However, cows that had KET were less likely to have an alert early postpartum when compared with cows that did not have KET. Mean genomic expected milk production (± SD) was 256.8 ± 600.1 kg. There was no interaction between GEM and parity on estrous expression (i.e., intensity and duration). There was no interaction between GEM and GDPR on the proportion of estrus early postpartum. |
| first_indexed | 2024-03-07T19:43:49Z |
| format | Article |
| id | doaj.art-cb2797a85c2c472aa0ebd27c142fb3e4 |
| institution | Directory Open Access Journal |
| issn | 0022-0302 |
| language | English |
| last_indexed | 2024-03-07T19:43:49Z |
| publishDate | 2024-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Dairy Science |
| spelling | doaj.art-cb2797a85c2c472aa0ebd27c142fb3e42024-02-29T05:17:02ZengElsevierJournal of Dairy Science0022-03022024-03-01107315921602Association between genomic daughter pregnancy rate and expected milk production on the resumption of estrus behavior in Holstein cattleA.M.L. Madureira0J.L. Plenio1J.L.M. Vasconcelos2T.G. Guida3R.L.A. Cerri4S. Borchardt5University of Guelph, Ridgetown Campus, Ridgetown, ON, Canada N0P 2C0Institute for Veterinary Epidemiology and Biostatistics, Freie Universität Berlin, 14163, Berlin, GermanyDepartment of Animal Production, São Paulo State University, Botucatu, Brazil 18168-000Department of Animal Production, São Paulo State University, Botucatu, Brazil 18168-000Applied Animal Biology, Faculty of Land and Food Systems, University of British Columbia, Vancouver, BC, Canada V6T 1Z4Clinic of Animal Reproduction, Freie Universität Berlin, 14163, Berlin, Germany; Corresponding authorABSTRACT: The objective of this observational study was to evaluate estrous expression at the first estrus occurring between 7 to 30 d in milk (DIM), as detected by an automated activity monitor (AAM), and its association with genomic daughter pregnancy rate (GDPR) and genomic expected milk production (GEM) in lactating dairy cows. A total of 4,119 lactations from 2,602 Holstein cows were included. Cows were enrolled as first lactation (n = 1,168), second lactation (n = 1,525) and third and greater lactation (n = 1,426). Hair samples were collected from the tail switch, and cows were genotyped using an SNP platform (Clarifide, Zoetis, São Paulo, SP, Brazil). Postpartum cows were examined daily by the farm personnel from calving until 10 DIM. Calving was classified as assisted (forced calf extraction) and unassisted (normal calving). Retained fetal membranes (RFM), hyperketonemia (KET), and left displaced abomasum (LDA) were also recorded. Mean GDPR (± SD) was −0.29 ± 1.4, and the intensity and duration of the first estrus event was 15.9 ± 13.1 x-factor (intensity unit measurement) and 11.1 ± 3.8 h, respectively. Cows that had greater GDPR had greater intensity and longer duration of estrus at the alert, independent of parity. Overall resumption of estrous expression, between 7 to 30 DIM, was 41.2% (1,695/4,119), where 58.8% (2,424/4,119) did not have an estrus event, 31.0% (1,274/4,119) of cows had one event of estrus, and 10.2% (421/4,119) of cows had 2 or more events of estrus early postpartum. Mean DIM (± SD) at first estrus event, detected by the AAM, was 19.4 ± 4.4 d. Days in milk at first event for cows with one event was 20.7 ± 1.6 d and 15.9 ± 3.1 d for cows with 2 or more events of estrus. First lactation cows were more likely to have an estrus event early postpartum when compared with second and third and greater lactation cows (45.2 ± 1.4% [530/1168] vs. 41.6 ± 1.3% [636/1525] vs. 37.2 ± 1.3% [529/1426], respectively). There was an interaction of parity and GDPR on the proportion of cows demonstrating an early postpartum estrus. There was no difference in the proportion of cows with an early postpartum estrus between those with assisted or unassisted calving, RFM, or LDA. However, cows that had KET were less likely to have an alert early postpartum when compared with cows that did not have KET. Mean genomic expected milk production (± SD) was 256.8 ± 600.1 kg. There was no interaction between GEM and parity on estrous expression (i.e., intensity and duration). There was no interaction between GEM and GDPR on the proportion of estrus early postpartum.http://www.sciencedirect.com/science/article/pii/S0022030223007282daughter pregnancy rateestrous behaviorexpected milk production |
| spellingShingle | A.M.L. Madureira J.L. Plenio J.L.M. Vasconcelos T.G. Guida R.L.A. Cerri S. Borchardt Association between genomic daughter pregnancy rate and expected milk production on the resumption of estrus behavior in Holstein cattle Journal of Dairy Science daughter pregnancy rate estrous behavior expected milk production |
| title | Association between genomic daughter pregnancy rate and expected milk production on the resumption of estrus behavior in Holstein cattle |
| title_full | Association between genomic daughter pregnancy rate and expected milk production on the resumption of estrus behavior in Holstein cattle |
| title_fullStr | Association between genomic daughter pregnancy rate and expected milk production on the resumption of estrus behavior in Holstein cattle |
| title_full_unstemmed | Association between genomic daughter pregnancy rate and expected milk production on the resumption of estrus behavior in Holstein cattle |
| title_short | Association between genomic daughter pregnancy rate and expected milk production on the resumption of estrus behavior in Holstein cattle |
| title_sort | association between genomic daughter pregnancy rate and expected milk production on the resumption of estrus behavior in holstein cattle |
| topic | daughter pregnancy rate estrous behavior expected milk production |
| url | http://www.sciencedirect.com/science/article/pii/S0022030223007282 |
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