TY - JOUR T1 - The Effect of Probiotic Supplementation on Production Performance, Egg Quality and Serum and Egg Chemical Composition of Lying Hens AU - Mohammadabadi, Tahereh AU - Sari, Mohsen AU - Chaji, Morteza AU - Aghaii, Ali JO - Journal of Animal and Veterinary Advances VL - 9 IS - 21 SP - 2774 EP - 2777 PY - 2010 DA - 2001/08/19 SN - 1680-5593 DO - javaa.2010.2774.2777 UR - https://makhillpublications.co/view-article.php?doi=javaa.2010.2774.2777 KW - Hens KW -egg KW -probiotic KW -performance KW -cholesterol KW -Iran AB - A study was conducted to evaluate the effects of addition different levels of probiotic to practical-type diet on the performance, egg quality and blood parameters of laying hens. The levels of probiotc was (0, 1000 and 2000 g Bioplus 2B ton-1 DM which provide 0, 3.2x106 and 6.4x106 cfu g-1 bacteria in feed). Twenty-seven Hy-Line W-36 strains of white Leghorn laying hens were assigned by a completely randomized design to 3 treatments with 3 replicates for each. Addition probiotic to the diets caused to significant increase (p<0.05) of egg production and egg mass and significant decrease (p<0.05) of feed conversion ratio. Probiobic improved egg weight, shell hardness and Haugh unit but not significant (p>0.05). Probiotic supplementation significantly decrease (p<0.05) the cholesterol and triglyceride of plasma also yolk cholesterol. Generally, the results showed that using 1000 g ton-1 probiotic had the best results than level of 2000 g ton-1. ER -