The effect of first-lactation calving season, milk production, and morphology on the survival of Simmental cows

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dc.citation.issue4
dc.citation.volume18
dc.contributor.authorBuonaiuto G
dc.contributor.authorVisentin G
dc.contributor.authorCosta A
dc.contributor.authorNiero G
dc.contributor.authorDegano L
dc.contributor.authorCavallini D
dc.contributor.authorMammi LME
dc.contributor.authorPalmonari A
dc.contributor.authorFormigoni A
dc.contributor.authorLopez-Villalobos N
dc.coverage.spatialEngland
dc.date.accessioned2024-04-09T02:40:24Z
dc.date.accessioned2024-07-25T06:47:02Z
dc.date.available2024-03-12
dc.date.available2024-04-09T02:40:24Z
dc.date.available2024-07-25T06:47:02Z
dc.date.issued2024-04-04
dc.description.abstractLongevity in dairy and dual-purpose cattle is a complex trait which depends on many individual and managerial factors. The purpose of the present study was to investigate the survival (SURV) rate of Italian Simmental dual-purpose cows across different parities. Data of this study referred to 2 173 primiparous cows under official milk recording that calved between 2002 and 2020. Only cows linearly classified for type traits, including muscularity (MU) and body condition score (BCS) were kept. Survival analysis was carried out, through the Cox regression model, for different pairwise combinations of classes of milk productivity MU, BCS, and calving season. Herd-year of first calving was also considered in the model. SURV (0 = culled; 1 = survived) at each lactation up to the 6th were the dependent variables, so that, for example, SURV2 equal to 1 was attributed to cows that entered the 2nd lactation. Survival rates were 98, 71, 63, 56, and 53% for 2nd, 3rd, 4th, 5th, and 6th lactation, respectively. Results revealed that SURV2 was not dependent on milk yield, while in subsequent parities, low-producing cows were characterized by higher SURV compared to high-producing ones. Additionally, cows starting the lactation in autumn survived less (47.38%) than those starting in spring (53.49%), suggesting that facing the late gestation phase in summer could increase the culling risk. The present study indicates that SURV in Italian Simmental cows is influenced by various factors in addition to milk productivity. However, it is important to consider that in this study all first-calving cows culled before the linear evaluation - carried out between mid- and late lactation in this breed - were not accounted for. Finding can be transferred to other dual-purpose breeds, where the cows' body conformation and muscle development - i.e. meat-related features - are often considered as important as milk performance by farmers undertaking culling decisions.
dc.description.confidentialfalse
dc.edition.editionApril 2024
dc.format.pagination101128-
dc.identifier.author-urlhttps://www.ncbi.nlm.nih.gov/pubmed/38574454
dc.identifier.citationBuonaiuto G, Visentin G, Costa A, Niero G, Degano L, Cavallini D, Mammi LME, Palmonari A, Formigoni A, Lopez-Villalobos N. (2024). The effect of first-lactation calving season, milk production, and morphology on the survival of Simmental cows.. Animal. 18. 4. (pp. 101128-).
dc.identifier.doi10.1016/j.animal.2024.101128
dc.identifier.eissn1751-732X
dc.identifier.elements-typejournal-article
dc.identifier.issn1751-7311
dc.identifier.number101128
dc.identifier.piiS1751-7311(24)00059-4
dc.identifier.urihttps://mro.massey.ac.nz/handle/10179/70864
dc.languageeng
dc.publisherElsevier BV on behalf of the Animal Consortium
dc.publisher.urihttps://www.sciencedirect.com/science/article/pii/S1751731124000594
dc.relation.isPartOfAnimal
dc.rights(c) 2024 The Author/s
dc.rightsCC BY 4.0
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectCulling
dc.subjectDual-purpose breed
dc.subjectKaplan–Meier curve
dc.subjectLongevity
dc.subjectSurvival analysis
dc.titleThe effect of first-lactation calving season, milk production, and morphology on the survival of Simmental cows
dc.typeJournal article
pubs.elements-id488063
pubs.organisational-groupOther
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