Effect of seasonal changes on fertility parameters of Holstein dairy cows in subtropical climate of Taiwan

dc.contributor.authorLiu, W-B
dc.contributor.authorPeh, H-C
dc.contributor.authorWang, C-K
dc.contributor.authorMangwe, MC
dc.contributor.authorChen, C-F
dc.contributor.authorChiang, H-I
dc.coverage.spatialKorea (South)
dc.date.accessioned2020-05-25T02:33:59Z
dc.date.available2017-09-18
dc.date.issued2018-06-01
dc.date.submitted2017-09-11
dc.description.abstractObjective: The purpose of this retrospective study was to investigate the relationship between temperature-humidity index (THI), season, and conception rate (CR) of Holstein cows in central Taiwan. Methods: The mean performance and number of observations were statistically evaluated for various parameters, including age at first service, number of days open, gestation length, CR, and calving interval for different parities. Results: The results indicate that the mean age at first service was 493.2 days; the gestation length was similar across all cows of different parities, ranging from 275.1 to 280.7 days. The overall CR of all inseminations was significantly lower in multiparous cows (47.26%±0.22%) than in heifers (57.14%±0.11%) (p<0.05). At THI>72 and during the hot season (from June to November), CRs for multiparous cows were significantly reduced compared to that for heifers, while the ratio remained unchanged among heifers for all seasons. Conclusion: To achieve a high CR, lactating cows should be bred in winter and spring (from December to May) from the start of the seasonal breeding program, whereas the heifer should be allowed to breed in summer and fall under the subtropical climate in Taiwan.
dc.format.extentpp.820-826
dc.format.mediumPrint-Electronic
dc.identifierajas.17.0301
dc.identifierhttps://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=elements_prod&SrcAuth=WosAPI&KeyUT=WOS:000430737700007&DestLinkType=FullRecord&DestApp=WOS
dc.identifier.doi10.5713/ajas.17.0301
dc.identifier.eissn1976-5517
dc.identifier.issn1011-2367
dc.identifier.otherGD8BR (isidoc)
dc.identifier.other28920410 (pubmed)
dc.identifier.urihttps://hdl.handle.net/10182/11922
dc.language.isoen
dc.publisherAsian-Australasian Association of Animal Production Societies
dc.relationThe original publication is available from Asian-Australasian Association of Animal Production Societies - https://doi.org/10.5713/ajas.17.0301 - http://dx.doi.org/10.5713/ajas.17.0301
dc.relation.isPartOfAsian-Australasian Journal of Animal Sciences
dc.relation.urihttps://doi.org/10.5713/ajas.17.0301
dc.rights© 2018 by Asian-Australasian Journal of Animal Sciences
dc.rights.ccnameAttribution-NonCommercial
dc.rights.ccurihttps://creativecommons.org/licenses/by-nc/4.0/
dc.subjectcalving interval
dc.subjectdairy cow
dc.subjectfertility
dc.subjectheat stress
dc.subjecttemperature-humidity Index
dc.subject.anzsrcANZSRC::070201 Animal Breeding
dc.subject.anzsrcANZSRC::040107 Meteorology
dc.subject.anzsrc2020ANZSRC::3003 Animal production
dc.titleEffect of seasonal changes on fertility parameters of Holstein dairy cows in subtropical climate of Taiwan
dc.typeJournal Article
lu.contributor.unitLU
lu.contributor.unitLU|Agriculture and Life Sciences
lu.contributor.unitLU|Agriculture and Life Sciences|AGSC
pubs.issue6
pubs.publication-statusPublished
pubs.publisher-urlhttp://dx.doi.org/10.5713/ajas.17.0301
pubs.volume31
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