Effects of blood meal, chicken offal meal and fish meal as sources of methionine and lysine in starter cockerel diets

The effects were studied of using combinations or plant protein sources, GNC, Palm Kernel cake, and  cotton and seed cake diets, supplementeil with 4 sources of methionine (M) and Lysine (L), synthetic M + L, blood meal + M, fish meal, or chicken offal meal (COM) in 8-Week 3 x 4 factorial experiment with sta11er cockerels. Sources of Mand L did not affect mean daily gain of the birds but significant differences (P< 0.05) were  observed in feed intke, feed per gain ratio, protein efficiency ratio (PER), nitrogen retention (NR) as well as economy of feed conversion. Maximum weight, best feed conversion ratio, PER and economy of feed  conversion were observed in the M+L dietary group followed by those on blood meal + M supplementary group where maximum NR was observed. The least response values (except NR) were obtained in the COM group. This study indicated thnt starter cockerels (0-8 weeks) fed diets supplemented with synthetic methionine and lysine gave the most optiomtl perfornrnnce.Keywords: Cockerels, performance, blood meal, chicken offol meal, fish meal, methionine and lysine

Effects Of Different Levels Of Dietary Methionine On The Carcass Characteristics Of Finisher Cockerels

The experiment was conducted to determine the effect of different levels of dietary methionine on carcass characteristics of finisher cockerels. 500 day old cockerels were reared together initially for 7 weeks and at 8 weeks of age, they were assigned to 8 dietary groups or different methionine levels. Weights of the birds were taken at the beginning and end of the experiment. In the 16th week, the birds were slaughtered to determine various carcass measurements. Results indicated that daily weight gain was significantly (P < 0.05) affected by dietary treatments. The daily weight gain increased with increasing level or dietary methionine until it was optimised at 0.37% level. The dressing percentage and most other cut up parts (Drumstick, Thigh, Neck, Back, Breast, Wing) were significantly (P < 0.05) different. Although significant differences were observed for most organs (expect spleen), gut and comb measured, these were not however consistent with dietary treatments.Keywords: Cockerels, Methionine, Carcass characteristic

Water consumption pattern and performance of mature rabbits fed only concentrate diet

No Abstract