Lactation Curve and Persistency of Anatolian Buffaloes [PDF]
Italian Journal of Animal Science, 2015 The aim of this study was to determine the lactation curve traits of Anatolian buffaloes raised under different conditions in farms in Tokat Province, Turkey.
Zafer Ulutas
exaly +4 more sources
Non-linear modelling to describe lactation curve in Gir crossbred cows [PDF]
Journal of Animal Science and Technology, 2017 Background The modelling of lactation curve provides guidelines in formulating farm managerial practices in dairy cows. The aim of the present study was to determine the suitable non-linear model which most accurately fitted to lactation curves of five ...
Yogesh C. Bangar, Med Ram Verma
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The effect of extended lactation on parameters of Wood’s model of lactation curve in dairy Simmental cows [PDF]
Animal Bioscience, 2021 Objective This study was focused on the estimation of parameters of Wood’s model and description of the lactation curve using the cows which were lactated over 24 months on the first lactation.
Tomáš Kopec +5 more
doaj +2 more sources
Journal of Dairy Science, 2022 : We fit the Wood's lactation model to an extensive database of test-day milk production records of US Holstein cows to obtain lactation-specific parameter estimates and investigated the effects of temporal, spatial, and management factors on lactation ...
Guilherme J M Rosa, VÍCTOR E Cabrera
exaly +3 more sources
Lactation curve modelling using Legendre Polynomial in Sahiwal cattle
Indian Journal of Animal Sciences, 2016 Present study aimed at modelling lactation curve in Sahiwal cattle using normalized Legendre polynomials functions of standardized units of time and understanding the variation of lactation curve in different lactations. Among the first three lactations,
VED PRAKASH +3 more
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Effects of season and age at first calving on genetic and phenotypic characteristics of lactation curve parameters in Holstein cows [PDF]
Journal of Animal Science and Technology, 2016 In this research data representing 72,946 primiparous cows from 724 herds with 638,063 total test day records calved between 2001 and 2011. These data were analysed to determine the effect of age at first and season of calving on parameters of the Wood ...
Mahdi Elahi Torshizi
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Association between gestation length and lactation performance, lactation curve, calf birth weight and dystocia in Holstein dairy cows in Iran. [PDF]
Anim Reprod, 2019 peer reviewedIn this study, 252,798 lactations on 108,077 cows in 433 herds were used to determine the association between gestation length (GL) and lactation performance, lactation curve, calf birth weight and dystocia in Holstein dairy cows in Iran ...
Atashi H, Asaadi A.
europepmc +2 more sources
Association between age at first calving and lactation performance, lactation curve, calving interval, calf birth weight, and dystocia in Holstein dairy cows. [PDF]
PLoS ONE, 2021 In the present study, records on 115,291 heifers distributed in 113 herds were used to investigate the association between age at the first calving (AFC) and lactation performance, lactation curve, the length of the first calving interval (CI), calf ...
Hadi Atashi, Anise Asaadi, Miel Hostens
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Modelling Lactation Curve for Genetic Evaluation of Crossbred Cattle
International Journal of Bio-Resource and Stress Management, 2023 The present study was conducted on first lactation 4415 monthly test-day milk yield records of 466 crossbred (CB) cattle sired by 89 bulls during 2000–2018 (19 years) maintained at Directorate of Livestock Farms, GADVASU, Ludhiana, Punjab, India.
Rohit Gupta +4 more
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Quantifying inter-group variability in lactation curve shape and magnitude with the MilkBot® lactation model [PDF]
PeerJ, 2013 Genetic selection programs have driven development of most lactation models, to estimate the magnitude of animals’ productive capacity from sampled milk production data.
James L. Ehrlich
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