El-Sherif,, M. (2003). EFFECT OF DRINKING SALINE WATER AND FLAVOMYCIN SUPPLEMENTATrON ON SOME PHYSIOLOGICAL RESPONSES, GROWTH PERFORMANCE AND CARCASS TRAITS OF BARKI RAM LAMBS. Journal of Animal and Poultry Production, 28(6), 4429-4447. doi: 10.21608/jappmu.2003.244679
M. M. A. El-Sherif,. "EFFECT OF DRINKING SALINE WATER AND FLAVOMYCIN SUPPLEMENTATrON ON SOME PHYSIOLOGICAL RESPONSES, GROWTH PERFORMANCE AND CARCASS TRAITS OF BARKI RAM LAMBS". Journal of Animal and Poultry Production, 28, 6, 2003, 4429-4447. doi: 10.21608/jappmu.2003.244679
El-Sherif,, M. (2003). 'EFFECT OF DRINKING SALINE WATER AND FLAVOMYCIN SUPPLEMENTATrON ON SOME PHYSIOLOGICAL RESPONSES, GROWTH PERFORMANCE AND CARCASS TRAITS OF BARKI RAM LAMBS', Journal of Animal and Poultry Production, 28(6), pp. 4429-4447. doi: 10.21608/jappmu.2003.244679
El-Sherif,, M. EFFECT OF DRINKING SALINE WATER AND FLAVOMYCIN SUPPLEMENTATrON ON SOME PHYSIOLOGICAL RESPONSES, GROWTH PERFORMANCE AND CARCASS TRAITS OF BARKI RAM LAMBS. Journal of Animal and Poultry Production, 2003; 28(6): 4429-4447. doi: 10.21608/jappmu.2003.244679
EFFECT OF DRINKING SALINE WATER AND FLAVOMYCIN SUPPLEMENTATrON ON SOME PHYSIOLOGICAL RESPONSES, GROWTH PERFORMANCE AND CARCASS TRAITS OF BARKI RAM LAMBS
Departm.nt of AnImal and Poultry PhysIology, Desert Research Center, MalarIa, CaIro, Egypt
Abstract
The aim of the present study was to Inve~\igate the eflect of using the antiblotie growth promoter flavornycin on physiOlogical and productive performance of Band ram lambs drinking saline water. Forty growing Bartd ram lambs averaging 6 months old and 26.0 Kg live body weight were used. A 2x2 factorial arrangement was used consisting of two groups of drinking water, tap water, TIN (505 ppm lOS) and diluted seawater, SW (12494 ppm TDS), two levels offlavomycin 0 and 20 mglhead and 10 animals as replicates. All groups were fed on a basal diet to cover requirements of 100 gm daily gain. Treatments continued until marketing age (12 months). Carcass traits were measured on three animals from each group.
Drinking SW reduced signifICantly the diurnal variation In rectal temperature. but inaeased skin and coat temperatures and the diumal variation of respiration rate. Flavomycln increased skin and coat temperatures and morning respiration rate. The changes In lhese physiological responses indicated that drinking SW facilitated heat stability through increasing water vaporization. Flavomycin increased heat production and helped in increasing insulation properties 0' the superlicial layers, which wa$ the most efficienl'in protecting grOWing lambs (rom cold stress during winter.
Flavomycin addition increased packed cell volume and hemoglobin concentration. Drinking SW decreased packed cell volume. but stimulated increasing mean corpuscular hemoglobin concentration.
Flavomyc:in Increased feed efficiency. while drinking SI/V decreased body daily gain. tolal body weight gain. nutrients intake. and feed efficiency. Adding f\avomycin reduced these bad effects of drinking SIN on growth periormance.
Drinking SW resulted in decreaslng empty body weight and hot carcass weight equaled to 2.642 IIg and 2.400 kg. respectively, in addition to a significant decrease in dressing percentage by 2.954% in respect to the control group. Adding flavomycin to the animals that drank 5W moderated thai decrease to become 1.624 kg, 1.900 kg and 2.384%, respectively. Drinking SW increased the lean percentage in the best rib cut on the account of fat percentage. Flavomycin overcame the negCltive effects of SW on the spleen weight.
1\ was conduded that addIng flavomycin to growing lambs un'der desert conditions couJd reduce some bad effects of drinking SW on growth performance and carcass trails. In addition, f\avomycin protected growing animars from cold stress through increasing insulation properties Of the superficial layers.
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