An analysis of indirect genetic effects on adult body weight of the Pacific white shrimp Litopenaeus vannamei at low rearing density

Table 1 Data structure and statistical description for body weight in generation G₁ of Litopenaeus vannamei

Gen^a	Sires	Dams	Full-sib families	Half-sib families	Test program	Sex	N1	N2	Mean^b	Min^c	Max^d	SD^e	CV^f	Survival rate (%)
G₁	100	91	105	33^g	MSTG	All	4725	4282	26.88	6.40	42.50	4.38	16.29	90.62
						Male	/	2060	26.28	9.70	40.80	3.91	14.88	–
						Female	/	2222	27.44	6.40	42.50	4.71	17.16	–
					OLTG	All	8398	6515^h	20.77	3.90	36.40	3.90	18.78	77.58
						Male	/	3187	20.39	6.80	32.40	3.46	16.97	–
						Female	/	3318	21.17	6.40	36.40	4.14	19.56	–

MSTG individuals from all families were tested in multiple small test groups (105 square concrete tanks of approximately 3 m²), OLTG individuals from all families were tested in one large test group (a circular concrete tank of 300 m²)
^aGeneration
^bMean body weight (g)
^cMinimum body weight (g)
^dMaximum body weight (g)
^eStandard deviations for body weight (g)
^fCoefficient of variation for body weight (%)
^gNumbers of paternal and maternal half-sib families were equal to 10 and 26, respectively, but the number of half-sib families indicated is less than 36 because three full-sib families were identical between the paternal and maternal groups
^hThe sex of 10 individuals was not identified when measuring body weight at harvest, thus, the number of male and female shrimp was less than the total number of individuals with observations on body weight

ISSN: 1297-9686