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Growth performance, blood metabolites and carcass traits of growing lambs raised on berseem silage ration [electronic resource].

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Gabr, A. A

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Language: English Summary language: Arabic Description: p.289-303Other title:

معدلات النمو وقياسات الدم ومواصفات الذبيحة للحملان النامية المنشأة على عليقة سيلاج البرسيم [Added title page title]

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Mansoura University journal of animal and poultry production, 2012 v.3 (6) [electronic resource].

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In: Mansoura University Journal of Animal and Poultry Production 2012.v.3(6)Summary: This study was conducted to determine growth performance, feed efficiency. feed utilization, blood metabolites and carcass characteristics of growing lambs raised on berseem silage treated with formic acid and concentrate feed mixture (CFM) ration. Berseem ciover was chopped at 2-3 cm of length and wilted for 24 hr then ensiled with 0.5% formic acid treatment (BSF). After 60 days from ensiling process, fermentation characteristics of ensiled berseem were immediately examined. Twelve growing crossbreed lambs were randomly assigned to two groups. First group (6 lambs; 23.0±1.68 kg) was raised on starter concentrate feed mixture (CFM) plus berseem hay as a control ration. The second group (6 lambs; 22.5±1.68 kg) was raised on CFM plus BSF. Growth trial was continued for 6 months. Daily weight gain (DWG), relative growth rate (RGR), voluntary feed intake, teed conversion, economic efficiency, blood parameters were examined. Digestibility trials were conducted in the last month of the experiment to determine the utilization and feeding value of tested rations. At the end of experiment, three lambs of each group were slaughtered to determine carcass traits and anatomy of digestive tract. The main results proposed that lambs raised on BSF plus CFM had higher total gain, DWG and RGR (P<0.01) than that in control group especially in last two months. Feed conversion (kg DMI/kg gain) was better in lambs fed BSF ration than control (8.56 vs. 12.46 kg).

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This study was conducted to determine growth performance, feed efficiency. feed utilization, blood metabolites and carcass characteristics of growing lambs raised on berseem silage treated with formic acid and concentrate feed mixture (CFM) ration. Berseem ciover was chopped at 2-3 cm of length and wilted for 24 hr then ensiled with 0.5% formic acid treatment (BSF). After 60 days from ensiling process, fermentation characteristics of ensiled berseem were immediately examined. Twelve growing crossbreed lambs were randomly assigned to two groups. First group (6 lambs; 23.0±1.68 kg) was raised on starter concentrate feed mixture (CFM) plus berseem hay as a control ration. The second group (6 lambs; 22.5±1.68 kg) was raised on CFM plus BSF. Growth trial was continued for 6 months. Daily weight gain (DWG), relative growth rate (RGR), voluntary feed intake, teed conversion, economic efficiency, blood parameters were examined. Digestibility trials were conducted in the last month of the experiment to determine the utilization and feeding value of tested rations. At the end of experiment, three lambs of each group were slaughtered to determine carcass traits and anatomy of digestive tract. The main results proposed that lambs raised on BSF plus CFM had higher total gain, DWG and RGR (P<0.01) than that in control group especially in last two months. Feed conversion (kg DMI/kg gain) was better in lambs fed BSF ration than control (8.56 vs. 12.46 kg).

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