Comparative bioefficacy of lysine from L-lysine hydrochloride or L-lysine sulfate in basal diets containing graded levels of canola meal for female broiler chickens.
A broiler growth assay was conducted to compare the efficacy of l-lysine HCl and l-lysine sulfate at a graded addition of canola meal (CM). A total of 1,440 1-d-old female Hubbard broiler chicks were allotted randomly to 6 dietary treatments each in 4 replicates of 60 birds per pen. The 2 lysine sources (l-lysine HCl and l-lysine sulfate) and the 3 CM levels (10, 15, and 20%) were used in 2 x 3 factorial arrangement in isonitrogenous (19% CP) and equicaloric (2,700 kcal of ME/kg) diets containing 0.96% digestible lysine. The experiment lasted for 42 d, and a single mash diet was used throughout the experiment. The feed intake during the starter phase (1 to 28 d) decreased linearly as the dietary CM level increased with diets containing l-lysine HCl, whereas feed intake increased linearly with increasing dietary CM level with that of lysine sulfate. Gizzard weight as percentage of carcass weight increased linearly (P < or = 0.016) as dietary CM level increased. No significant effect of lysine sources or CM was observed on body weight gain, feed:gain, mortality, carcass weight, breast and thigh yield, and abdominal fat. In conclusion, l-lysine HCl can be replaced with l-lysine sulfate for broiler diets, and CM can be used as up to 20% of the starter (1 to 28 d) and finisher (29 to 42 d) diets without having any adverse effects of broiler performance.
Ahmad
G
G
Sadiq Brothers Poultry, 48-C, Satellite Town, Near Chandni Chowk, Murree Road, Rawalpindi, Pakistan-46000.
Mushtaq
T
T
Mirza
M Aslam
MA
Ahmed
Z
Z
D000821:Animal Feed; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D000914:Antibodies, Viral / Q000097:blood; D001823:Body Composition; D029688:Brassica napus; D002645:Chickens / Q000254:growth & development*; D004032:Diet / Q000662:veterinary*; D005260:Female; D007243:Infectious bursal disease virus / Q000276:immunology; D008239:Lysine / Q000031:analogs & derivatives* / Q000378:metabolism / Q000494:pharmacology*; D009522:Newcastle disease virus / Q000276:immunology; D015430:Weight Gain / Q000187:drug effects*
D000914:Antibodies, Viral; D008239:Lysine