EFFECT OF THE YEAR OF BREEDING AND AGE OF EWES ON SELECT REPRODUCTION INDICATORS OF CHAROLLAIS SHEEP BREED
MOMANI SHAKER M., SADA I., VOHRADSKY, R, GHASAN AGIL
Abstract
The aim of this work was to evaluate select reproduction
indicators of mutton Cha-rollais breed of sheep imported from France in dependence
on age of ewes including the effect of early tupping of gimmers at the age of
9 months and on the year of breeding.
Results of reproduction indicators of the Charollais sheep found in Czech Republic
with respect to fertility percentage per ewe of the foundation stock (157.14
%) as well as with respect to fertility percentage per ewe lambed (179.25 %)
are very good even when these indicators do not reach the indicators of the
country of origin - in France. It is necessary to take into consideration the
less favourable conditions of Czech Republic, most of all the average temperature
and quantity of precipitations in spring and autumn.
Fertility percentage of all sheep observed during the years 1993 - 1997 reached
including gimmers 81.25 % and without gimmers tupped at the age of 8 - 9 months
87.67 %. The effect of the year on the fertilization percentage of ewes was
insignificant but the age of ewes proved as statistically significant effect
(PL 0.05), when the highest fertilization percentage was found in ewes at the
age of 3 years (91.07 %) and the lowest value in gimmers tupped at the age of
9 months (55.56 %). It is evident from the Tab. 1. the rising tendency of fertilization
percentage with successive age of ewes till the age of 5 years. The effect of
the year showed up as significant at the fertilization percentage per ewe lambed.
Key words:
sheep, Charollais breed, fertility, effect of year,
age of ewes