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dc.contributor.authorSapkota, D.
dc.contributor.authorKelly, A.K.
dc.contributor.authorCrosson, P.
dc.contributor.authorWhite, R.R.
dc.contributor.authorMcGee, M.
dc.date.accessioned2023-08-02T14:28:25Z
dc.date.available2023-08-02T14:28:25Z
dc.date.issued2020-08-19
dc.identifier.citationD. Sapkota , A.K. Kelly , P. Crosson , R.R. White , M. McGee , Quantification of cow milk yield and pre-weaning calf growth response in temperate pasture-based beef suckler systems: A meta-analysis, Livestock Science (2020), doi: https://doi.org/10.1016/j.livsci.2020.104222en_US
dc.identifier.urihttp://hdl.handle.net/11019/3061
dc.descriptionpeer-revieweden_US
dc.description.abstractThe objectives of this study were to quantitatively summarize factors associated with cow milk yield (MY) and calf growth response in pasture-based beef cow-calf suckler systems and to discern how cow genotype and parity influenced these responses. A dataset of 344 treatment mean observations was compiled from 69 studies that reported data on cow MY, and calf pre-weaning average daily live weight gain (ADG) and/or weaning weight (WW). Data were analysed using linear mixed effects models with study and region included as random effects. Models were developed for cow MY, calf ADG and WW response and each model was evaluated based on different model fit statistics. The final cow MY model included cow origin (Dairybeef or Beef), cow maturity (early-maturing (EM) or late-maturing (LM) genotypes) and parity. Dairybeef produced 35.4% more milk (8.64 vs. 6.38 kg/day) than Beef cows, and LM produced 20.9% more milk (8.20 vs. 6.78 kg/day) than EM genotypes (P < 0.001). Multiparous cows had a 14.8% higher MY (8.11 vs. 7.06 kg/day) compared to primiparous cows (P < 0.001). Lactation curve persistency was better (P < 0.05) for Beef and EM compared to Dairybeef and LM genotype cows, respectively. The final models of calf ADG and WW included cow origin, cow maturity and parity. Calves from Dairybeef and LM cows were 14 and 20 kg heavier (P < 0.001) at weaning (210-day adjusted) compared to those from Beef and EM genotype cows, respectively. Calves from multiparous cows were 13 kg heavier at weaning than those from primiparous cows (P < 0.001). The response in calf ADG associated with a 1 kg increase in cow daily MY was 47 and 53 g for Dairybeef and Beef cows, respectively (P<0.001). Corresponding responses for EM and LM cows were 51 and 55 g (P<0.001). In conclusion, the relationships between cow MY and calf pre-weaning growth, as well as the quantitative impact of cow genotype and parity were determined for pasture-based beef suckler systems; the coefficients generated can be used for improving beef cow-calf management strategies, beef cattle breeding programmes and bio-economic modelling purposes.en_US
dc.language.isoenen_US
dc.publisherElsevier BVen_US
dc.relation.ispartofseriesLivestock Science;
dc.rights© 2020 Elsevier B.V. All rights reserved.
dc.rightsAttribution-NonCommercial-ShareAlike 4.0 International*
dc.rights.urihttps://www.elsevier.com/tdm/userlicense/1.0/
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/*
dc.subjectBeef cowen_US
dc.subjectMilk yielden_US
dc.subjectMeta-analysisen_US
dc.subjectPasture-based systemsen_US
dc.subjectCalf growthen_US
dc.titleQuantification of cow milk yield and pre-weaning calf growth response in temperate pasture-based beef suckler systems: A meta-analysisen_US
dc.typeArticleen_US
dc.identifier.doihttps://doi.org/10.1016/j.livsci.2020.104222
dc.contributor.sponsorTeagasc Walsh Fellowship Programmeen_US
dc.source.volume241
dc.source.beginpage104222
refterms.dateFOA2023-08-02T14:28:25Z
dc.source.journaltitleLivestock Science


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  • Livestock Systems [315]
    Teagasc LIvestock Systems Department includes Dairy, Cattle and Sheep research.

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