Facultad de Ciencias Veterinarias

Introducción For decades now already in our country, the National Agricultural Technology Institute (INTA, Instituto Nacional de Tecnología Agropecuaria), provides a production backbone of broiler chickens resulting from the crossbreeding of different heavy broiler breeds. The outcome of this process is the so called "Campero-INTA" featured by better production rates than native bre ...

IntroductionThe domestic hens lay eggs in series, by following a production pattern that accompanies the follicular maturation - process controlled by the circadian rhythm and the physiological systems linked to reproduction (Etches, 1996).  Although little is known about the exact way in which the various factors converge to determine the laying rate, it is known that the genetic potential, ...

Introduction Assimilated poultry breeds (Rhode Island, Plymouth Rock, New Hampshire, etc.) are used in genetic improvement programs to produce breeds adapted to the technical, production and cultural conditions of rural areas in different countries (Bonino & Canet , 1999). They have better production indexes than the native breeds but bear the hardiness and adaptability to the environment of ...

Introduction Management of parent stock is the poultry activity demanding the highest level of care, as mistakes made here are multiplied and have effects on the entire chain of production, including very especially the performance of progeny (North, 1993). Regardless of the criteria that are managed to divide the cycle of these birds, the important thing is that the early stages of life mark the ...