Maria Stanciu

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Maria Stanciu, Camelia Zoia Zamfir, Ana Enciu, Alina Nicolescu, Maria Sauer, Carmen Ana Pivodă

The precocious use of sheep and goat male and female youth at reproduction is a method of intensifying the reproduction through which increases the meat production by achieving a higher number of products and also obtaining one more lactation per exploited sheep or goat, reducing the non-productive period of the females; also, by the precocious introduction to reproduction of the young sheep and goats at the age of 7-10 months the non-productive expenses are avoided by maintaining them in the effective for one year more, because even at the age of 20-22 months, when they are normally used for reproduction, they do not have appropriate reproductive qualities. The researches were made on effectives of sheep and goats (on sheep of Merinos de Palas breed, Palas milk breed, Palas meat breed, prolific population of Palas, Turcana breed and on goats of Carpathian breed). At the female lambs which were precociously introduced at reproduction, at the age of 7-10 months, the non-returns had values of 81,25-89,47%, the fecundity of 81,25-89,47%, prolificacy of 105,26-115,38%, and at the young female kids the non-returns had values of 79,92-83,33%, the fecundity of 76,92 -83,33%, the prolificacy of 120,0-130,0%. The reproduction indicators of the sheep and goats which were mounted or artificially inseminated with sperm from the males with the age of 7-10 months were: at the young rams, the fecundity was 55,55-91,30% and prolificacy of 100,0-122,22%, and at the young male goats the fecundity was 71,42-91,30% and prolificacy of 107,69-122,22%.

Key words: precocious, reproduction, fecundity, prolificacy, non-returns