DADOS DE PESO DE FRANGOS DE CRESCIMENTO LENTO EM UMA GRANJA EM ABADIÂNIA - GO

Abstract

The system for raising free-range chickens is characterized by the breeding of commercial birds aimed at meat production, using slow-growing bird strains in a semi-extensive system. However, it is observed that there is a scarcity of data in the literature regarding the production of free-range chickens. In this sense, the objective of this research was to gather data on the average initial weight, daily weight gain, and weight at 14, 21, 35, 63, and 70 days of Naked Neck chickens of the commercial Label Rouge® lineage produced in a farm in the municipality of Abadiânia, and to compare the production history with the management guide for the lineage. The study considered production from January 2018 to June 2024, totaling 56 batches, in which the initial weight ranged from 38.11 to 39.78 grams. Regarding the average weight for the minimum slaughter age (70 days), 62.50% of the batches achieved the performance target proposed in the lineage's management guide, while 37.50% did not reach the weight standard used as a reference for the lineage. Although daily weight gain (DWG) was not specified in the manual, at 70 days, the evaluated batches showed variations from 30.61 to 35.85 grams/bird during the analyzed period. These results demonstrated in practice how Naked Neck birds develop, and although they are genetically well-standardized, the animals may achieve weights above or below the recommended levels for the lineage. These variations are directly linked to the different management realities found in each farm.