Growth Performance of Rahmani and F1 Cross (Chios x Rahmani) Lambs under the Environmental Conditions of Upper Egypt
Journal Title: Journal of Animal Science Advances - Year 2012, Vol 2, Issue 1
Abstract
This study was carried out in Animal Production Department Farm, Faculty of Agriculture, Al–Azhar University during three consecutive production years (2002, 2003 and 2004). This study aimed to evaluate some productive and reproductive traits in Rahmani sheep and F1 cross with Chios rams (½ C ½ R). A total of 200 Rahmani ewes were bred, and produced 144 lambs (However, 140 lambs born alive and 4 lambs died after birth) of which 116 were raised to weaning. The effect of genetic groups, sex of lambs, year of lambing and season of lambing on birth weight of lambs were not significant, while, type of birth and age of dam had a significant (P<0.01 or P<0.05) effects on birth weight of lambs. The crossbred lambs (½ C ½ R) were heavier at birth than purebred Rahmani lambs; Male lambs were heavier than female ones in their birth weight. Also, single born lambs were heavier than twin lambs in their birth weight, and lambs born in summer were, on the average 0.13 kg, heavier than those born in winter at birth. Lambs born by ewes of 4 years–old or more had the heaviest birth weight. Genetic groups had a highly significant (P<0.01) effect on weaning weight and pre-weaning daily gain of lambs, while, sex of lambs, type of birth, year of lambing, season of lambing and age of dam had no significant effect on weaning weight of lambs. Genetic groups, sex of lambs, type of birth, year of lambing, season of lambing and age of dam had no significant effect on body weight at 6, 9 and 12 months of age or on daily gain at all periods studied .However, the F1 crossbred (½ C ½ R) expressed heavier weights than purebred Rahmani at all periods studied, male lambs were heavier than females, and single born lambs were heavier than lambs born as twins in all body weights studied. Also lambs born in summer was heavier than that of winter ones.
Authors and Affiliations
Abd-Allah M. , Hassan H. A. and Al-Baroady M. A.
Keywords
Related Articles
- EP ID EP103477
- DOI -
- Views 161
- Downloads 0
Sex Reversing of Fighter Fish (Betta Splendens) by Artemia Enriched with Tribulus Terrestris (Caltrops) Herbal Extract
Since male fighter fish is more beautiful and commercially worthier than female one, the aim of this research was to achieve a new and appropriate safe method for masculization in B. splendens fish with herbal extract of...
Sheep And Goats Slaughtered At Keffi Abattoir Health Status, Carcass Yield And Foetal Deaths
It becomes very worrisome if at this stage of human technological advancement animals with potential zoonosis even pregnant ones are continually being slaughtered in abattoirs. Yet, there are no documented cases and wher...
Growth Performance, Carcass Characteristics and Cost Benefits of Four Broiler Strains on Restricted Feeding Regimen in North Central Nigeria
Growth performance and carcass quality of broilers irrespective of genetic standardization depend on feeding pattern. In order to determine the effect of feed restriction on broiler strains in north central Nigeria, 192...
Prolong Egg Storage Affects Broiler Breeder Embryonic Metabolism and Chick Quality
The research investigates the effects of prolonged storage of hatching eggs on eggshell conductance (G) and embryonic metabolism of Ross 308 broiler breeder eggs. Hatching eggs were collected, weighed and stored for 10 d...
Productivity in ewes of different genetic groups and body sizes
The aim of this work was to investigate the level of food intake in distinct genetic groups of sheep. Forty non-pregnant ewes were divided in four genetic groups (GG): large Santa Inês (LSI), small Santa Inês (SSI), cros...