Genetic and environmental heterogeneity of residual variance of weight traits in Nellore beef cattle

Table 1 Summary statistics pertaining to weight traits in Nellore beef cattle

Trait	Dataset^*	N	N_CG	N_S	N_D	N_P	Mean (kg)	CV (%)	Skew	Kurt
GBW	males	22892	358	93	20139	246	147.48	16.11	−0.13	0.28
GBW	females	23421	373	101	20749	232	133.26	15.72	−0.10	0.35
GBW	both	51179	808	144	40485	355	140.26	17.04	−0.01	0.46
YW	males	8944	211	45	8044	199	277.49	14.64	0.44	0.34
YW	females	11915	262	64	10585	186	256.42	12.27	0.32	0.19
YW	both	28560	638	118	22154	242	278.03	14.96	0.58	0.89

GBW = weight gain from birth to weaning (in kg); YW = long-yearling weight (in kg); N = number of records per trait; N_S = number of sires; N_D = number of dams; N_CG = number of levels of contemporary groups; N_P = average size of progeny group of sires; CV = coefficient of variation (in %); Skew and Kurt = coefficients of skewness and kurtosis for the distribution of the raw data, respectively; *for each trait, analyses were carried out separately with data of males or females and also with a dataset containing records of both sexes.

ISSN: 1297-9686