RESUMEN
A study was conducted to evaluate age at puberty for three genetic groups namely: pure local Awassi, ;[L], Crossbred [1/ 2 D'man x 1/2 Awassi] [Fl] as well as crossbred [3 /4 Awassi x 1/4 D'man] [Bc]. A total of twenty four ewe lambs [10L, 8 Fl and 6 Bc] were used in this study. At the beginning of the experiment, average age was 108.8, 105.87 and 111 days and body weights were 21.1, 18.87 and 15.66 kg for L, Fl and Bc respectively. Significant differences [P<0.05] were noticed among groups of age at first estrus which was longer for L[248.12 +/- 58.97days].Than for F1[173.71 +/- 41.27days] and Bc [159.60 +/- 38.04 days]. BC group exhibited low [P>0.05] body weight for [20.50 +/- 2.04 kg] compared with L [31.37 +/- 8.74kg] but did not differ with Fl group [21.85 +/- 5.61 kg]. Differences in cycle length of three genetic groups lack significance. It is concluded that Awassi-crossbred ewe lambs [Fl, BC] have advance age at puberty with low weight than pure Awassi
Asunto(s)
Animales , Pubertad , Peso CorporalRESUMEN
The study was conducted to study the effect of hormonal treatment on Barrenness ewes reproductive performance. Fertility [number of ewes lambed per ewes joined], Twinning percentage [number of twinning lambing per ewes lambed],Lambing percentage [number of lambs porn per ewes joined], mortality [number of lambs died ber lambs born] and weaning percentage [lambs weaned per ewes joined] for 25 Barrenness ewes were treated with Veteglan [Cloprostenol] and HCG .Reproductive performance were affected significantly [P<0.05] by hormonal treatment Treated ewes were surpassed control group in there fertility [73.0% compared with 40,0%], twinning percentage [9.1% compared with 0.0%], lambing percentage [80.0% compared with 40%], mortality [25.0% compared with 50.0%] and weaning percentage [60.0% compared with 20.0%] It was concluded that hormonal treatment increased fertility and weaning percentage in barrenness ewes by 33.0% and 40.0% res