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Table 1.

Beginning and ending body masses, L4 vertebra lengths and zygomatic arch (ZA) widths

	Mass (g)			L4 length (mm)					ZA width (mm)
Litters	Begin	End	Begin	End	% Change^{^*}	Begin	End	% Change^{^*}	Total
Breeder 02-02	45.0	47.5	4.13	5.07	22.7	18.08	19.26	6.5	6
Breeder 02-04	33.5	59.7	3.55	5.75	62.0	17.74	20.91	17.9	7
Breeder 02-05	45.5	56.3	4.07	4.79	17.7	19.68	19.73	0.3	5
Nonbreeder 02-13	30.0	39.6	3.40	3.86	13.5	16.90	18.89	11.8	0
Male Breeder 02-01	41.5	37.9	4.00	4.13	3.3	18.89	19.46	3.0	–
Male Nonbreeder 02-15	24.3	36.9	3.74	3.87	3.5	18.04	17.97	-0.4	–
Est. Breeder, BG Queen	42.9	51.7	5.49	5.84	6.4	–	–	12	–
Est. Breeder, C1 Queen	59.7	55.8	5.27	5.48	4.0	20.34	21.37	5.1	6^{^†}

	Mass (g)			L4 length (mm)					ZA width (mm)
Litters	Begin	End	Begin	End	% Change^{^*}	Begin	End	% Change^{^*}	Total
Breeder 02-02	45.0	47.5	4.13	5.07	22.7	18.08	19.26	6.5	6
Breeder 02-04	33.5	59.7	3.55	5.75	62.0	17.74	20.91	17.9	7
Breeder 02-05	45.5	56.3	4.07	4.79	17.7	19.68	19.73	0.3	5
Nonbreeder 02-13	30.0	39.6	3.40	3.86	13.5	16.90	18.89	11.8	0
Male Breeder 02-01	41.5	37.9	4.00	4.13	3.3	18.89	19.46	3.0	–
Male Nonbreeder 02-15	24.3	36.9	3.74	3.87	3.5	18.04	17.97	-0.4	–
Est. Breeder, BG Queen	42.9	51.7	5.49	5.84	6.4	–	–	12	–
Est. Breeder, C1 Queen	59.7	55.8	5.27	5.48	4.0	20.34	21.37	5.1	6^{^†}

Percentage increase over length of study

C1 Queen was an established (Est.) breeder when we acquired her. The number listed does not include litters in previous facilities