The present work was conducted to examine the effects of dietary crude protein (CP) levels (18, 21 and 24%) on growth performance (Initial and final body weight, daily body weight gain, feed consumption, feed conversion and protein efficiency ratio) during 2-9 weeks of age and certain body measurements (body height, tibiotarsus length and tibiotarsus girth) at 9 weeks of age. A total of 30 Afri...

The present study deals with the isolation and identification of intestinal bacteria from Common carp Cyprinus carpio. and its effect on growth performance. Six experimental feeds such as Fl control (without probiotics), F2 (1ml of Proteus spp.), F3 (2ml of Proteus spp.), F4 (3ml Proteus spp.), F5 (4 ml of Proteus spp.), and F6 (1ml of yeast). Where prepared by using fish meal, Ground nut oil c...

The feed restriction program is on of the main techniques in growth curve manipulation for increasing production efficiency in broiler chicken. Quantities and qualitative feed restriction are procedures that can be used to manipulate the feeding strategies of poultry in order to decrease growth and metabolic rate to some extent and so alleviate the incidence of some metabolic diseases such as a...

two experiments were conducted to determine lysine (lys) requirements of two commercial strains, ross 308 and cobb 500, from 15 to 28d of age. basal diet was formulated to be adequate in all nutrients except for lys. incremental levels of supplemental lys were added to the basal diet generating six experimental treatments in a range from 0.60 to 1.20% digestible lys. birds were randomized acros...

A study was undertaken to test the effect of 2 commercially available probiotics on the production efficiency of broiler chickens hatched from the same breeder flock at 3 different ages (28, 43, and 57 wk). At each of the 3 breeder flock ages, 1,600 broiler chickens were hatched and randomly allocated to 1 of 4 treatments: 1) no probiotics (control), 2) probiotic 1 administered in the drinking ...

An experiment was conducted for sixty days to evaluate the effects of Vitamin C of formulated feed on growth performance and body composition of stringing fish, Heteropneustes fossilis (Bloch, 1792). During experimental trial in the laboratory condition, the change in growth and feed utilization by the stringing fish fed on three different Vitamin C level have been assessed by the determination...

Starting from an hypothesis concerning the long-term effects of exogenous treatment during the ontogeny of mammals and birds, we incubated Rhode Island Red (RIR) eggs at different prenatal temperatures (table 1) to study the feed efficiency, development, reproduction and energy metabolism of the hens. The maintenance requirement varied (up to 30 p. 100) as well as the feed conversion (up to 28 ...