Results 11 to 20 of about 21,122 (246)
Associations between the time of conception and the shape of the lactation curve in early lactation in Norwegian dairy cattle [PDF]
Acta Veterinaria Scandinavica, 2011 Background This study was carried out to determine if an association exists between the shape of the lactation curve before it is influenced by the event of conception and the time from calving to conception in Norwegian dairy cattle. Lactation curves of
Toft Nils +4 more
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Characterization of the lactation curve of f1 Holstein-Zebu cows
Ecosistemas y Recursos Agropecuarios, 2018 The objective was to nd a function to describe the lactation curve of grazing Holstein - Zebu cows (n=23) in tropical México. Twelve were based on the general nonlinear function A*Φ1(x)*Φ2(x): A, a positive scalar; Φ1 , a positive monotonically ...
Epigmenio Castillo-Gallegos
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On designing the average lactation curve at the ascending phase
Agricultural and Food Science, 1962 Comparisons are made between different methods to find the peak production (maximum daily milk yield) and methods to design the average lactation curve at the ascending phase in dairy cows.
Aarne Mäkelä
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Revista de la Facultad de Ciencias AgrariasTwenty-four local goats were divided into two treatments: 1) control group fed only on grazing, and 2) supplemented group, which received supplemental feeding before parturition and during lactation.
Jorge Alonso Maldonado-Jáquez +5 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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Investigating lactation curve characteristics of dairy cows
Науковий вісник Львівського національного університету ветеринарної медицини та біотехнологій імені С.З. Гжицького. Серія: Сільськогосподарські науки, 2023 The main goal of this study was to analysis of the main characteristics (latent variables) of lactation curve in dairy cows using multivariate Principal Component Analysis.
O. S. Kramarenko
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Comparison of Mathematical Models Applied to F1 Dairy Sheep Lactations in Organic Farm and Environmental Factors Affecting Lactation Curve Parameter [PDF]
Asian-Australasian Journal of Animal Sciences, 2013 The objective of this study was to compare the goodness of fit of four lactation curve models: Wood’s Gamma model (WD), Wilmink (WL), and Pollott’s multiplicative two (POL2) and three parameters (POL3) and to determine the environmental factors affecting
J. C. Angeles-Hernandez +4 more
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, 2021 The data shows the Parameters (a, b, c) of lactation curve of 21 lactation West African Dwarf Does milked for twelve weeks, it also shows factors that affect this parameters. The values of the parameters were generated using Wood equation 1967.
Nwosu, E
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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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Contrasting models for lactation curve analysis [PDF]
, 2002 Several statistical models have been proposed for the genetic evaluation of production traits in dairy cattle based on test-day records. Three main approaches have been put forward in the literature: random regression, orthogonal polynomials, and, more ...
Visscher, P. M. +3 more
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