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Articles by Z. Ansari Pirsaraei
Total Records ( 2 ) for Z. Ansari Pirsaraei
  H. Khazaei Koohpar , H. Sayyahzadeh and Z. Ansari Pirsaraei
  At the present study, a comparison was done between the natural mating and the A.I. in Mazandran native hen. 100 females and 10 males were randomly selected from the native hen flock, one male was determined per each ten females. First the natural mating was done between the flock. Each female’s egg was determined using trap nest and each individual female and males chicken's number was counted at the end of the test. The male were removed from the boxes for insemination and then the males were ready for collecting the semen. The abdominal rubbing of the males were done by using the Burous method and the resulting semen were immediately diluted using the low fat milk and 0.1cc of semen was inseminated to each female and the insemination was reported after each six days. The egg collecting stage and the stages following the same as the natural mating. The results of the statistical analysis showed that there is no significant difference between the fertility and hatchability traits of these two models (p>0.36). Yet the A.I. helped to mate the males and females having no mating will and thus the hatchability percentage increased. On the other hand, the male's keeping cost decreased.
  Z. Ansari Pirsaraei , A.A. Saki , M. Kazemi Fard and H. Saleh
  The effect of diets with different levels of tallow on broiler breeder performance was evaluated in the study. About 3 different levels of fats (0.5, 1 and 1.5%) were added into a corn-soybean meal-based broiler breeder diet. The control diet included no supplementary fat. All diets were isocaloric and isonitrogenous. Feeding of experimental diets was initiated when broiler breeders (Ross 308) were 22 week old. Body weight of females was not affected by dietary treatments during the experimental period. Adding different levels of tallow to broiler breeder diet affected egg yolk weight (%), albumen weight (%) and yolk: albumen ratio (%) compared with controls (p<0.05). However, double-yolked egg, liveability, fertility (%), hatchability of fertile eggs (%), hatchability of total eggs set (%) and chick weight (g) were not affected by dietary treatments. Tallow supplementation to breeder diet significantly reduced hen-day egg production and egg weight (p<0.01) in comparison with controls. Female body weights were not affected by dietary fat addition through the entire experimental period. These data suggest that inclusion of different levels of tallow up to a level of 1.5% to the corn-soybean meal diet may affect egg production performance, fertility, egg weight, chick weight, hatching of eggs set and specific gravity without any adverse effect on body weight and settable egg characteristics.
 
 
 
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