International Journal of Technology Enhancements and Emerging Engineering Research (ISSN 2347-4289)

IJTEEE >> Volume 3 - Issue 10, October 2015 Edition

International Journal of Technology Enhancements and Emerging Engineering Research  
International Journal of Technology Enhancements and Emerging Engineering Research

Website: http://www.ijteee.org

ISSN 2347-4289

Effect Of Supplementation With Different Proportions Of Breweries Dried Grain And Maize Bran Mixtures On The Performance Of Crossbred Dairy Cows

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Tesfaye Feyisa, Getnet Assefa, Mengistu Urge



Key words: feed intake, diet digestibility, milk yield, crossbred dairy cows



ABSTRACT: Effect of supplementation with different proportions of breweries dried grain and Maize bran mixtures on feed intake, digestibility, milk yield and milk composition of crossbred dairy cows were assessed at Holetta Agricultural Research Center by using five crossbred cows of similar milk yield (8-10 kg/d), body weight (355+47), age of lactation (early lactation), but differ in parities arranged in 5*5 single Latin square design; being started at December/2010 and finished at March/2011. Experimental animals were fed ad libitum natural pasture hay basal diet and supplemented with different treatments; T1 = Concentrate mix that consisted 65% wheat bran, 33% noug (Guizotia abysinica) seed cake and 2 % salt, T2 = 20% breweries dried grain (BDG) + 78% maize bran (MB) + 2% Salt ; T3 = 38% BDG + 60% MB + 2% Salt ; T4 = 58% BDG + 40% MB + 2% Salt and T5 = 78% BDG + 20% MB + 2% Salt. Laboratory analysis of experimental feeds showed that all ingredient feeds except maize bran had adequate CP content required for moderate level of ruminant production, which is greater than 15%, a level that is usually required to support lactation and growth. Dry matter and metabolisable energy intakes were the same in all groups while basal diet and crude protein intakes were significantly different where by cows maintained on T1 ration consumed high basal intake with the average daily intake of 8.04 kg/d. Similarly, significantly higher (P<0.001) CP intakes were recorded for T1 and T5 groups with the average value of 1.56 and 1.54 kg/d, respectively. Treatment effects were also non-significant (P>0.05) for apparent dry matter digestibility and apparent acid detergent fiber digestibility, but significance difference (P<0.05) existed for apparent crude protein digestibility, apparent metabolisable energy digestibility and apparent neutral detergent fiber digestibility whereby animals consumed T5 concentrate diet digest higher (P<0.01) CP than those on T2, T3 and T4. In addition to this, animals that received T3 and T5 concentrate diet digested higher (P<0.05) NDF than those consumed T1 concentrate diet. Milk yield, milk protein, lactose and total solids were not affected by experimental rations, but significant variation was existed for milk fat between animals fed with the different experimental rations whereby cows consumed T1 gave milk with high (P<0.05) fat of 4.62% when compared to T2 (4.14%) and T5 (4.06%). The average daily milk yields were 10.28, 9.72, 10.20, 10.66 and 10.79 kg in T1, T2, T3, T4 and T5, respectively. Economic analysis showed that T5 concentrate diet was economically feasible than the control group and the remaining dietary treatments. However, due to significantly lower milk fat in T5 than the control, it can be concluded that breweries dried grain and maize bran mix at the proportion of 58% BDG +40% MB+2% Salt (T4) can be proposed as alternative concentrate diet for the control (T1) for lactating dairy cows.



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