ATTIA, M. (2002). COMPARING THE LOCAL, IMPORTED DL-METHIONINE HYDROXY ANALOGUE - CALCIUM AND DL-METHIONINE FOR EL- SALAM LOCAL LAYING HENS. Egyptian Journal of Agricultural Research, 80(2), 865-879. doi: 10.21608/ejar.2002.311353
MOSTAFA Y. ATTIA. "COMPARING THE LOCAL, IMPORTED DL-METHIONINE HYDROXY ANALOGUE - CALCIUM AND DL-METHIONINE FOR EL- SALAM LOCAL LAYING HENS". Egyptian Journal of Agricultural Research, 80, 2, 2002, 865-879. doi: 10.21608/ejar.2002.311353
ATTIA, M. (2002). 'COMPARING THE LOCAL, IMPORTED DL-METHIONINE HYDROXY ANALOGUE - CALCIUM AND DL-METHIONINE FOR EL- SALAM LOCAL LAYING HENS', Egyptian Journal of Agricultural Research, 80(2), pp. 865-879. doi: 10.21608/ejar.2002.311353
ATTIA, M. COMPARING THE LOCAL, IMPORTED DL-METHIONINE HYDROXY ANALOGUE - CALCIUM AND DL-METHIONINE FOR EL- SALAM LOCAL LAYING HENS. Egyptian Journal of Agricultural Research, 2002; 80(2): 865-879. doi: 10.21608/ejar.2002.311353
COMPARING THE LOCAL, IMPORTED DL-METHIONINE HYDROXY ANALOGUE - CALCIUM AND DL-METHIONINE FOR EL- SALAM LOCAL LAYING HENS
Animal Production Research Institute, Agricultural Research Centre, Dokki, Giza, Egypt
Abstract
The present study was conducted to compare the biological effi-ciency 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 "EL-Salem" 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 methio-nine treatments as compared with the basal diet . DL-methionine was significantly better than LMHA and IMHA on equimolar basis in the egg production parameters . The relative efficiency of LMHA as compared to DLM was 92.42, 98.57, 91.68 and 86.87% in the term of EN, EW,EM and FC, respectively. Whereas, IMHA is 96.44, 99.35, 95.77 and 93.52%, respectively. According to the linear regression model (Y = A+CX), the efficiency of LMHA was found to be 55.36, 56.50, 54.65 and 49.65 % for EN, EW, EM and FC, respectively, while, the efficiency of IMHA (C3/C1) was 79.71, 71.33, 77.37 and 76.24 %, respectively.
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