Desempenho, maturidade sexual e qualidade dos ovos de dois grupos genéticos de aves destinadas à criação tipo caipira

Abstract

The evaluation of zootechnical performance is an important tool to know the development of a specific species, or lineage, thus meeting their real needs, making production more profitable. The objective of this work was to evaluate the performance, sexual maturity and egg quality of two genetic groups, called UFC Branca (UFCB) and UFC Preta (UFCP). Of the total number of birds used, 93 birds were UFCB, 42 males and 51 females, and 34 UFCP birds, 3 males and 31 females. The birds were kept in cages, separately, from the second week of life up to 22 weeks. Thus it was possible to determine the performance during the growth phase of each bird and the weight that the females reached sexual maturity. After 23 weeks, the birds were transferred to another shed where they stayed on the floor, separated by batch, with one batch of black birds and the other of white birds, where they were evaluated until they reached 35 weeks of age. During the production phase it was possible to evaluate the performance and quality of eggs in each batch. Males of both bloodlines had better performance in the growth phase when compared to females. In the stance phase, UFC Preta had a better performance index.