DOMINANT SUSSEX D 304 is a very attractive coloured program reminiscent of Light Sussex by its marking, with the difference that our program is a coloured Leghorn with this Colombian marking. The program uses sexing according to feathering speed in one-day-old chickens. Variability of the eggshell colour from white to cream is characteristic. Laying rate is over 260 eggs.
This DOMINANT SUSSEX D 304 program is the result of cross breeding two Colombian Leghorn populations. The paternal population is fast feathering with allele of the "k" recessive gene for feathering rate "K/k" and the maternal population is slow feathering with the dominant "K" allele. When hatching one-day-old chickens, feather sexing is used using K/k alleles, where a one-day-old cockerel acquires the dominant allele of this "K" gene from the mother and is slow feathering, while one-day-old hen gets a recessive "k" allele from the father and is fast feathering, which is evident on one- day-old chickens’ flight feathers.