Published in Scientific Papers. Series D. Animal Science, Vol. LX
Written by Ioan CUSTURA, Minodora TUDORACHE, Ilie VAN, Andrei MARMANDIU, Paul ANTON
During the present study, we have determined the values associated with the quantity and quality of the seminal material, influencing the hatchability and finally the biological and economic efficiency of the reproduction activity. The conducted research was organized on a period of two years, the material being represented by commercially available hybrids of ROSS 308, 25 roosters and 250 hens. The study took place for three different control ages (25, 35 and 45 weeks) along the production cycle (week 19 - week 64). The work took place in three different units, each corresponding to a different experiment (A - with analyzed parameters under the standard and using bedding made of chopped straws, B - with parameters that have been raised over the standard limits and using rice hulls as bedding, and C - with parameters at the producer's recommended level, and bedding made of wood shavings). It was observed that the highest hatchability appeared associated with 25th week (67.39 %) and 45th week (87.89%) of experiment C and 35th week (89.89%) of experiment B. The obtained results, although not statistically significant, appear to favor the use of classic bedding made of wood shavings, and of the technologically standard microclimate parameters, a situation in which the hatchability rate recorded the highest values.
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