Results 271 to 280 of about 48,394 (303)
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BSAP Occasional Publication, 1981
An algebraic description of the lactation curve is a useful component of any model of the day-to-day production of lactating animals. Observation and common sense suggest that such a function should rise to a peak early in lactation and decline thereafter but simpler models have been used.
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An algebraic description of the lactation curve is a useful component of any model of the day-to-day production of lactating animals. Observation and common sense suggest that such a function should rise to a peak early in lactation and decline thereafter but simpler models have been used.
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On fitting curves to lactation data
Animal Science, 1978ABSTRACTThe usual method of fitting the model y = Anb exp(−cn) to lactation data, by a multiple regression of logey on n and logen, can result in an ill-fitting curve. An analysis of the untransformed data provides a better fit but requires more extensive computation and a simple approximation to this procedure is given.
J. M. Cobby, Y. L. P. Le Du
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The shape of the lactation curve
The Journal of Agricultural Science, 1923(1) The ratio of the total lactation yield to the maximum yield, divided by the mean ratio (in the particular district) for the month of calving in which the lactation commenced, has been selected to represent the shape of each individual cow's lactation curve, and has been called the shape figure (S.F.).(2) The variation of individual S.F.'s was found
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Quantification of Lactation Curves for Diagnosis
American Association of Bovine Practitioners Conference Proceedings, 2006Milk production over time (the lactation curve) is both a reflection of the health of a lactating cow and the most important economic measure of her performance. MilkBot™ is a tool to quantify both the shape and magnitude of lactation curves in a consistent and repeatable way.
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Characterisation of the Lactation Curve in Pakistani Buffaloes
Proceedings of the British Society of Animal Production (1972), 1984The rate of milk secretion in dairy animals displays a trend throughout the lactation period. It increases to a maximum in a few weeks following parturition and decreases thereafter until the animal goes dry.This trend draws a certain curve, namely the lactation curve.The milk yield of a single lactation may be influenced by many factors but the ...
K.Z. Gondal, P. Rowlinson
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A note on lactation curves of crossbred cows
Animal Science, 1984ABSTRACTMilk production data were collected on 8- and 9-year-old Angus × Hereford or Hereford × Angus; Charolais × Angus or Hereford; Jersey × Angus or Hereford; and Simmental × Angus or Hereford cows at days 14, 28, 56, 84, 112, 140, 168 and 196 after parturition.
T. G. Jenkins, C. L. Ferrell
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Modelling THI effects on milk production and lactation curve parameters of Holstein dairy cows
Journal of Thermal Biology, 2021Naceur M’Hamdi +2 more
exaly
Mathematical modelling of goat lactation curves.
2007MACCIOTTA, Nicolo' Pietro Paolo +3 more
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Lactation curve models for estimating gene effects over a timeline
Journal of Dairy Science, 2011Dirk-Jan De Koning +2 more
exaly