Araştırmada, 6 haftalık yaşta sütten kesilmiş 48 adet Beyaz Yeni Zelanda Tavşanların % 9.03-9.11 gibi düşük, % 13.30-13.64 gibi yüksek ham selüloz içeren rasyonlarırıa sırasıyla % 7, 5, 7 ve 5 balık unu ile % 0, 2, 0 ve 2 düzeyinde kuru maya (Saccharomyces cerevisiae) ilave edilerek 7 haftalık besleme sonunda besi performansı ile bazı sekum ve gübre parametrelerine etkisi incelenmiştir. Araştırma 4 grup ve 3 tekerrürlü olarak Tesadüf Parselleri Deneme Desenine göre kurulmuştur. Deneme sonu ortalama canlı ağırlıklar sırasıyla, 1608.2 g, 1651.0 g, 1482.0 g, 1682.8 g; ortalama canlı ağırlık artışları 916.9 g, 956.0 g, 786.9 g, 982.1g; ortalama yem tüketimleri 3018.0 g, 3094.7 g, 2860.6 g, 3035.0 g; ortalama yem değerlendirme sayıları 3.32, 3.34, 3.72, 3.10 olarak tesbit edilmiştir (P>0.05). Sekum içeriğinde saptanan kuru madde % 20.32, % 17.60, % 20.23, % 20.22; pH 7.12, 6.98, 6.98, 7.05; total uçucu yağ asitleri (UYA) 35.20 mmol/kg, 32.75 mmol/kg, 28.96 mmol/kg, 32.57 mmol/kg ve amonyak (NH3) 7.0{; mg/100 g, 7.98 mg/100 g, 7.22 mg/100 g, 8.48 mg/100 g değerlerinde gruplar arasında önemli bir farklılık görülmemiş (P>0.05), sıcak karkas randımanına ait değerlerde ( % 46.83, % 42.68, % 46.02, % 44.60 ) önemli farklılık saptanmıştır (P0.05), ham selüloz, ham protein, ham kül değerlen gruplara göre sırasıyla, % 23.23, 23.28, 27.67, 27.72; % 12.81, 13.74, 10.07,12.05; % 10.51, 10.62, 8.31, 8.26 olarak tesbit edilmiştir (P

this research, 48 New Zealand Rabbits, weaned at î weeks age; were fed with 0, 2, 0 and 2 % dry yeast (Saccharomyces cerevisiae) supplemented diets contained 7, 5, 7 and 5 % fish meal and low or high crude fibre for 7 weeks. Diets of low crude fibre were 9.03 pp.9.11 and high crudu fibre were 13,30 or 13.64 %. As the effects of supplements on fattening performance, some cecal and feaces parametîrs were investigated. Research was designed in Randomized Plot Design for 4 groups and had 3 replicates per groups. At the end of the experimental periods average live weights were 1608.2 g, 1651.0 g, 1482 g, 1682.8 g; average live weight gains were 916.9 g, 956.9 g, 786.9 g, 982.1 g; average feed intakes were 3018.0 g, 3094.7 g, 2860.6 g, 3035.0 g; average feed efficiency values were 3.32,-3.34, 3.72, 3.10; cecal dry matters were 20.32 %, 17.60 %, 20.23 %, 20.22 %; pH were 7.12, 6.98, 6.99, 7.05; volatile fatty acids were 35.2C mmol/kg, 32.75 mmol/kg, 28.96 mmol/kg, 32.57 mmol/kg; ammonia were 7.08 mg/100 g, 7.97 mg/100 g, 7.22 rng/100 g, 8.48 mg/100 g for the groups respectively. Although these parameters and mortality were not significant differences (P>0.05) among the groups, average hot carcass outputs were 46.83 %, 42.68 %, 46.02 %, 44.60 % and differences were significant (P0.05) among the groups, crude fibre, crude protein, crude ash were 23.23 %, 23.28 %, 27.67 %, 27.72 %; 12.81 %, 13.74 %, 10.07 %, 12.05 %; 10.51 %, 10.62 %, 8.31 %, 8.26 for the groups respectively (P>0.05). According to the results; at the levels of 2 % dry yeast supplements to rabbit diets contained low or high crude fibre, especially in low crude fibre groups; hot carcass output statistically decreased, feaces crude fibre slightly increased but not statistically, in high crude fibre groups; feaces crude fibre and crude aches statistically increased, however crude protein also statistically decreased were observed.