DOMINANT TINTED D 723 is an original program for the production of eggs with cream shell based on the crossing of the White Leghorn cockerel and Rhode Island Red hen. This program is highly adapted to the different feeding and technology production conditions and is also suitable for intensive production of table eggs. This program achieved the highest laying rate in comparative tests of all our hybrids carried out at the Czech University of Agriculture and International Poultry Testing Station in Ústrašice. In 2016, 338 eggs at 74 weeks of age were confirmed in the test, making this hybrid one of the best programs at international level.
DOMINANT TINTED D 723 program is the result of cross breeding two populations, namely fast feathering White Leghorn paternal population with allele of the "k" recessive gene for feathering rate "K/k" and slow feathering Rhode Island Red (RIR) maternal population 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.