Table 2.

Percent change (+/–) in milk output from day 0 to 28 after farrowing and the maximum variable cell loss rate relative to the reference (Ref) output as the response to changes in individual input parameters from the Ref parameterization (–60%, –30%, +30%, and +60%)

	Ref. input		Unit	–60%	–30%	30%	60%
Milk output from day 0 to 28, kg/d (Ref. output: 31.8 kg/d)			Kg/d	% Change of Ref.
Hormone decay rate	kH	2.45	%/d	1	0	0	−1
Maximum cell proliferation rate	vm	1	cell divisions/d	−49	−16	8	21
Fractional basal cell loss rate	ks	10	%/d	9	5	−6	−14
Fractional variable cell loss rate	ksM	58	%/d	2	1	−1	−1
Michaelis–Menten constant of variable cell loss rate	Mh-p	0.9	g/g	−71	−17	4	4
Time period of average	kr	2	d	0	0	0	0
Maximum milk synthesis rate	kM	0.21	g milk/1,000 cells/min	−44	−9	−2	−7
Ejectable milk storage capacity	Mm-p	11	g milk/1,000 cells	−60	−17	7	11
Maximum milk removal rate	rm	150	g milk/min	−62	−29	20	28
Nursing interval	t interval	50	min	39	30	−25	−41
Milk ejection duration	t duration	22.5	s	−69	−33	22	29
Maximum variable cell loss rate, cells/min (Ref. output: 0.137 cells/min)			Cells/min	% Change of Ref.
Hormone decay rate	kH	2.45	%/d	13	7	−7	−13
Maximum cell proliferation rate	vm	1	cell divisions/d	−99	−80	110	231
Fractional basal cell loss rate	ks	10	%/d	197	86	−57	−86
Fractional variable cell loss rate	ksM	58	%/d	−36	−15	11	20
Michaelis–Menten constant of variable cell loss rate	Mh-p	0.9	g/g	239	121	−79	−97
Time period of average	kr	2	d	−4	−2	2	4
Maximum milk synthesis rate	kM	0.21	g milk/1,000 cells/min	−100	−91	53	84
Ejectable milk storage capacity	Mm-p	11	g milk/1,000 cells	89	7	−3	−6
Maximum milk removal rate	rm	150	g milk/min	214	99	−73	−96
Nursing interval	t interval	50	min	−99	−91	54	90
Milk ejection duration	t duration	22.5	s	242	110	−78	−97