Fertilitas Telur Dan Mortalitas Embrio Ayam Kedu Pebibit Yang Diberi Ransum Dengan Peningkatan Nutrien Dan Tambahan Sacharomyces Cerevisiae

The study aimed to assess the effect increased with the addition of nutrient rations Saccharomyces cerevisiae as a source of pre-probiotics on fertility and embryonic mortality of breeder kedu hen. The materials in use are 90 black kedu chickens in a year production period with weight 1636,13 g 109, 51 for females and 1850,54 g 120,89 for males, and yeast breads (fermipan) as a source of S. cerevisiae. The ration consists of corn, concentrate, premix, rice bran, fish flour, soybean meal, lime, and shell flour. The design of experiment that is used is complete randomized design (CRD) 2x3 factorial with 3 replications. The first factor is the type of breeder ration (R1) and improved ration (R2), the second factor is the level of addition of yeast bread of 0% (S0), 2% (S1) and 4% (S2) of the ration given. The result of this research showed that there was no interaction (P>0,05) between the ration improvement and the level of yeast nread to the value of ration consumption of breeder's kedu chicken for eggs fertility and embryo mortility. The addition of yeast bread factor significantly increase egg fertility and reduce embryo mortality, especially the addition of 2% (S1) than unleavened bread (S0) and the addition of 4% (S2). Based on the results, it can be concluded that administration of yeast as much as 2% can improve fertility by reduce embryo mortality in breeder kedu chickens