Fitting lactation curves in a Colombian Holstein herd using nonlinear models
Revista Facultad Nacional de Agronomía Medellín, 2018 Statistical characterization of dairy cows lactation curves allows prediction of total milk yield from one or a few test-day records. The objectives were the characterization of milk production in a Colombian Holstein herd under tropical dairy production
Norma Patricia Duque López +4 more
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A link function approach to model heterogeneity of residual variances over time in lactation curve analyses [PDF]
, 2000 Several studies with test-day models for the lactation curve show heterogeneity of residual variance over time. The most common approach is to divide the lactation length into subclasses, assuming homogeneity within these classes and heterogeneity ...
Hill, W. G. +3 more
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Determination of the best lactation curve model and lactation curve parameters using different nonlinear models for anatolian buffaloes [PDF]
, 2020 The present investigation was conducted to determine the lactation curve parameters and to choose the best model that defines the lactation curve. Data were composed of 4897 test day milk yield (TDMY) records from Anatolian buffaloes calved during 2014 ...
Kul, Ertuğrul
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The mathematical description of lactation curves in dairy cattle
Italian Journal of Animal Science, 2011 This review gives an overview of the mathematical modelling of lactation curves in dairy cattle. Over the last ninety years, the development of this field of study has followed the main requirements of the dairy cattle industry.
Giuseppe Pulina +4 more
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Indian Journal of Animal Sciences, 2020 The effect of measure number of milk production (MP) on the estimation of parameters in typical and extended lactations curve parameters of local goats was evaluated.
GLAFIRO TORRES-HERNÁNDEZ +6 more
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Comparison of lactation curve models for fortnightly test day milk yield
Indian Journal of Animal Sciences, 2020 The study of lactation curve helps to predict lactation milk production at a certain point of time and provides useful information for taking desirable decisions on preliminary sire evaluation, early culling of poor producers, breeding and feeding ...
VINEETA ARYA +5 more
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Animal, 2009 Early lactation parameters are difficult to estimate from commercial dairy records due to the small number of records available before the peak of production.
G.E. Pollott
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Non-nutritional factors affecting lactation persistency in dairy ewes: a review
Italian Journal of Animal Science, 2010 Milk production is largely related to the shape of the lactation curve. Key elements of the lactation pattern are peak yield, which is the maximum daily yield reached during lactation, and lactation persistency, which is the medium rate of milk yield ...
Antonello Cannas +5 more
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Food resource allocation patterns in lactating females in a long-term selection experiment for litter size in mice [PDF]
, 2002 Resource allocation patterns, as quantified by residual food intake (RFI), and the consequences for offspring development were investigated during lactation in 96 females of a mouse line selected for 104 generations for high litter size at birth (S-line)
Luiting, Petronella +18 more
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CHEMICAL COMPOSITION AND SOMATIC CELL EVOLUTION DURING LACTATION IN ROMANIAN BLACK AND WHITE COWS
Scientific Papers Animal Science and Biotechnologies, 2023 The aim of the paper was to study the evolution of the chemical composition and somatic cell count during lactation in Romanian Black and White cows and effect of calving season on the shape of the lactation curve.
L. T. CZISZTER +6 more
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