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International Journal of Dairy Science
Year: 2007  |  Volume: 2  |  Issue: 4  |  Page No.: 312 - 320

Effect of Adding Some Chemical Agents to Ensiled Vegetable and Fruit Market Wastes on Silage Quality and the Performance of Lactating Goats

S.M. Kholif, S.A.H. Abo El-Nor and M.M. Khorshed    

Abstract: Five types of silage were made from Vegetable and Fruit Market Wastes (VFMW) to evaluate silage quality. The different types of silage were, VFMW (S1), VFMW+5% ortho-p-acid (S2), VFMW+5% formic acid (S3), VFMW+5% 1: 1 ortho-p-acid: formic acid (S4) and VFMW+5% sodium acetate (S5). After 21, 42 and 64 days the siloes were opend and the silages characteristics were examined. Supplementation of chemical agents to VFMW silage (S2, S3, S4 and S5) were significantly increased dry matter, organic matter, crude protein, ether extract and nitrogen free extract contents, while crude fiber content was significantly decreased (p<0.01) with treated silage compared with control (S1). In vitro dry matter (p<0.01) and organic matter (p<0.05) disappearances were significantly higher with formic acid+ortho-p-acid and sodium acetate (S4 and S5) treated silage followed by ortho-p-acid and formic acid (S2 and S3) and then control (S1). Silage pH value was decreased (p<0.01) with adding ortho-p-acid and sodium acetate to silage, while, silage butyric acid concentration was increased (p<0.01) with ortho-p-acid and decreased (p<0.01) with the combination of acids adding to silage compared with control. On the other hand, ammonia-N, lactic acid were not among treatments. Silage pH, ammonia-N, butyric acid and lactic acid concentrations were increased (p<0.01) with time of ensiling. Nine castrated goat's male average (26.2 kg and 4 years age) were divided into three groups using 3x3 Latin square design with 30 day periods to study the effect of treatments on rumen activity and nutrient digetibilities. DM, OM, CP, CF, EE and NFE digestibilities were increased (p<0.05) with treated groups compared with control. Rumen total nitrogen, true protein nitrogen and non protein nitrogen contents were increased (p<0.05) while, ammonia-N content was decreased (p<0.05) with treated groups compared with control. Fifteen lactating Zaraibi goats after seven days of parturition were ranked to three groups using 3x3 Latin square design with 30 day periods to study the effect of treatments on milk yield and composition. Animals were fed on Concentrate Feed Mixture (CFM): VFMW silage (S1), CFM: VFMW treated with 5% formic acid (S2) and CFM: VFMW treated with 5% sodium acetate (S3). Milk yield and 4% FCM were increased (p<0.01) with treated silage. Yields of milk contents were higher (p<0.05) in treated group compared with control. However in milk, total protein, fat, lactose and solids not fat contents were not differed significantly among treatments. Chemical treated silage improved (p<0.05) feed efficiency (milk Yield/Dry Matter Intake (DMI) and 4% FCM/DMI) of VFMW silage. Blood serum glucose increased (p<0.05) while, urea and total lipids decreased (p<0.05) with treated groups compared with control.

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