Increasing Baluchi ewe efficiency- On farm comparing Baluchi ewe production (lamb and wool) which mated with Baluchi, Shall and Moghani bucks for economically sheep enterprise
2007
Emami meybodi, Mohammad A`li | Torkaman Zehi, Adam | Qareh Daghi, A`li Akbar | Shafi` Naderi, A`li
In this study the culled Baluchi ewes were mated with Baluchi (B), Shall(S) and Moghani (M) bucks in three years. It was done two years in Shahrbabak sheep research station and in farm flock in 3th year respectively. The average rate of ewe parturated per ewe joined (EP/EJ) was 0.67±0.26 in different ars (p0.05), the age of ewe and their live weights at mating time had significant effects on this trait (p0.05) and (p0.01) respectively, but sire breed had not significant effect. The average rate of lambs weaned per ewe joined (LW/EJ) was 0.64±0.29 in different years (p0.01). The age of ewe and their live weights at mating time had so significant effects on it (p0.05) and (p0.01) respectively. In this period sire breed had not significant effect too. The average lamb birth weight was 3.48±0.48 Kg., it affected by year and sire breeds (p0.01), but difficulty parturition did not occur. Ewe weights were classified in four groups and its factor had not significant effect on lamb birth weight. The lambs have risen with their mother until weaning time in range land-two years and in farm-one year respectively. Weaning time was on 88±28 days of age in average. These records adjusted based on 88 days of age. Average weaning weight based on 88 days was 18.46±2.43 Kg. The lambs weight of different sire breeds was not same (p0.05). The effect of year and ewe weight in mating time had significantly affected on it (p0.01), (p0.05) respectively. Biological efficiency of ewe was 1236±174 gr/Kg lamb weaned per each ewe metabolic live weight in different years (p0.01). Sire breed had significant effect on it (p0.05). With using Shall and Moghani bucks in a part of pure Baluchi flock after routine roll mating for cross breeding, apparent pregnancy- parturition rate raised (3%). The S*B and M*B lambs, were heavier than B*B ones 20%, 13% respectively (p0.05. Biological efficiency of ewes which mated with shall buck was heavier, 204gr (17%) than that which mated with Moghani buck 143gr (12%) base on Baluchi ewe with its buck (p0.05. All of crosses lambs had colored wool and they can easily separate from pure breed lambs.
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