EFFECT OF PARTIAL REPLACEMENT OF MAIZE SILAGE BY WATER HYACINTH SILAGE ON THE PERFORMANCE OF LACTATING CROSSBRED FRIESIAN COWS | ||
| Journal of Animal and Poultry Production | ||
| Article 10, Volume 28, Issue 1, January 2003, Pages 195-204 PDF (2.9 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jappmu.2003.242186 | ||
| Author | ||
| Bahira K. Mohammed, | ||
| Animal Production Research Institute, Agric. Res. Center, Ministry of Agric., Giza, Egypt. | ||
| Abstract | ||
| Nine lactating crossbred Friesian cows were used just after the lactation peak along with the "Swing Over" method, to examine the effect of replacing maize silage with ears (MS) by water hyacinth silage (WHS) in3 rations on nutrierit digestibility and milk production. Cows averaged 472 kg live body weight, at 2nd to 4th parities. Cows were fed for 140 days according to allowances of NRC for dairy cattle (1989). Tested rations consisted of: concentrate feed mixture (CFM)+ (100% MS) as Control ration (CR), CFM + (75% MS + 25% WHS) as tested ration 1 (TR1), CFM + (50% MS + 50% WHS) asTR2. The results obtained didn't reveal any significant differences between CR and TR1 in the digestion coefficients of CP , EE , CF , NFE and feeding value as TDN & DCP. All values of CR and TR1 were significantly (P<0.05) higher than those of TR2. Total DM, TDN, DCP intake were in the following order: CR>TR1>TR2. The daily milk yield, FCM and fat% were significantly (P<0.05) higher for CR and TR 1 than that obtained with TR2. Only fat percentage, among milk constituents showed significantly (P<0.05) higher values for cows fed CR and TR1 than those of TR2. Cows fed TR1 attained the best feed conversion, economic efficiency and feed cost/ kg milk as compared with those fed CR or TR2. It could be recommended to use WH silage along with MS, in a proportion of 1:3 beside CFM, in dairy ration to improve considerably milk productivity and decrease cost of milk production I kg than that obtained by using ration contained 100% MS with CFM. | ||
| Keywords | ||
| Crossbred lactating Friesian cows; Water hyacinth; Silage; Maize silage; Digestibility; Milk yield; Milk composition; Economic efficiency | ||
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