Effect of Using Biogen as a Feed Additive on Productive and Reproductive Performance of Rabbits

Abstract

This study was conducted to evaluate the effect of using biogen in V-line rabbit diets on its productive and reproductive performance. Twenty eight rabbits (16 does of 10 months' age averaged 3325 ± 122 g and 12 bucks of 11 months' age averaged 3440 ± 268 g live body weight were randomly assigned to four groups and fed ad libitum as follows: T1; Basal diet (Control), T2, T3 and T4: Basal diet plus 0.5, 0.75 and 1 g biogen/Kg diet, respectively. Results showed that doe's in T3 and T4 gave better results for number of services per conception, litter size at weaning, litter weight, bunny weight and daily gain at birth and weaning. Mortality rate generally decreased than the control (T1) and T2. Parturition interval non-significantly decreased, with the lowest period being recorded for T2. Total feed intake/parity showed significant (P<0.05) increase in biogen groups. Biogen in bucks' diets significantly (P<0.05) improved semen quality traits.Biogen significantly (P<0.05) increased hemoglobin, white blood cells, monocytes % and eosinophils % compared to the control. While red blood cells, hematocrit %, lymphocytes % and neutrophils were not significantly differed among groups. Biogen significantly (P<0.05) increased serum total protein, globulin and total cholesterol, whil significantly (P<0.05) reduced triglycerides, but non-significantly albumin and creatinine. Biogen (T3 and T4) improved the relative economic efficiency by 28.39 and 23.50%.In conclusion, 0.75 g biogen/Kg diet improved productive and reproductive performance of does and bucks and enhanced blood constituents as well as economic efficiency.

Effect of Using Biogen as Feed Additive on the Productive Performance of Growing Rabbits

“…Biogen, which contained all of these items or some yeasts, hydrolytic enzymes, saccharides and some useful bacterial strains. Some studies used such products to improve efficacy of feed utilization by rabbit does and their offspring (Fahim et al, 2021). The advantage of using products such as Biogen may be due to its content from colloidal silica that proved to be significantly advantageous for culturing cells (Taub et al, 1998), which may provide these products its viability.…”