Results 21 to 30 of about 829,404 (286)
Modelling the lactation curve of dairy cows using the differentials of growth functions [PDF]
, 2008 Descriptions of entire lactations were investigated using six mathematical equations. comprising the differentials of four growth functions (logistic. Gompertz, Schumacher and Morgan) and two other equations (Wood and Dijkstra).
M. H. FATHI NASRI +14 more
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INTERPRETATION OF THE LACTATION CURVE [PDF]
Journal of General Physiology, 1926 The validity of the assumption of a substance determining the rate of milk secretion and undergoing monomolecular destruction, based on group behavior, is questioned on the evidence from a large number of individual lactation curves. It seems probable that the rate of decrease in the rate of milk secretion with advance in lactation is dependent upon ...
openaire +2 more sources
World, 2022 The ability of smallholder dairy farming systems (SHDFS) to achieve desirable lactation-curve characteristics is constrained or reduced by environmental stresses.
Dismas Said Shija +4 more
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Comparison of different lactation curve models of anatolian buffaloes [PDF]
Kafkas Universitesi Veteriner Fakültesi Dergisi, 2014 WOS: 000344690200005In this study, eight different lactation curve models were compared by using test day milk yield records belonging Anatolian Buffaloes raised in different Farm conditions between 2011 and 2013.
ŞAHİN A +4 more
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Lactation Curves for First Lactation Egyptian Buffalo
Journal of Dairy Science, 1994 First lactation records of 1538 buffalo maintained at the Animal Production Research Institute farms in 1967 to 1990 were used to determine lactation curves for three lactation lengths: > 28 and < 150 d, > 149 d, and > or = 308 d, as well as all records. Daily milk yields were summed by 14-d intervals for analyses.
G H, Metry +3 more
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Freedom in Farrowing and Lactation (FFL21): Questions to presentations [PDF]
, 2021 Presentations without specific questions or clarifications are omitted. The complete list of and links to presentations can be found at https://www.freefarrowing.org/research/references/freedom-in-farrowing-and-lactation-2021-ffl21/
Dippel, Sabine
core
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
doaj +1 more source
Genetic Aspects of Lactation Curves
Journal of Dairy Science, 1981 Parameters of lactation curves were defined by a gamma-type function for 113,705 lactations from the California Dairy Herd Improvement Association. Heritabilities and genetic correlations were estimated from a mixed-model analysis of paternal half sisters for first, second, third, and later lactations.
R D, Shanks +3 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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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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