Comparing the local, imported DL-methionine hydroxy analogue - calcium and DL-methionine for El- Salam local laying hens [electronic resource].

Includes references.

The present study was conducted to compare the biological efficiency of local and imported DL-Methionine hydroxy analogue - calcium (LMHA), imported DL- Methionine hydroxy analogue - calcium (IMHA) and DL-methionine (DLM) in corn- soya diet for local strain layers as a source of methionine . Two hundred hens (22 weeks old) of developed local strain "ELSalam" were fed on ten experimental diets for 16 weeks. Each of the three methionine sources DLM, LMHA and IMHA were added to a basal corn-soya diet,deficient in methionine (0.25%), on equimolar basis at levels of 0.04, 0.06 and 0.08 % . At the end of each 4 weeks interval the productive performance and egg quality parameters were measured. Results obtained can be summarized as follows : The best egg production was obtained at 0.33 % total methionine with 0.08% equivalent added from DLM, LMHA or IMHA. There were a significant increase in shell thickness for all methionine treatments as compared with the basal diet . DL-methionine was significantly better than LMHA and IMHA on equimolar basis in the egg production parameters.

Summary in Arabic.

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