Substitution of concentrate feed with fresh mulberry (Morus alba), in the diet of dairy cattle.

This experimentcompared four balanced diets in which different percentagesof 84-day-old fresh mulberry dry matter (0%, 20%, 40% and60%) substituted its equivalent of dry matter in the concentrate.The total intake of dry matter varied between 3.12%and 3.24% in relation to live body weight (BW). No si...

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Autor Principal: Boschini Figueroa, Carlos
Formato: Artículo
Idioma: Español
Publicado: Universidad de Costa Rica 2013
Acceso en línea: http://revistas.ucr.ac.cr/index.php/agromeso/article/view/11947
http://hdl.handle.net/10669/17781
Sumario: This experimentcompared four balanced diets in which different percentagesof 84-day-old fresh mulberry dry matter (0%, 20%, 40% and60%) substituted its equivalent of dry matter in the concentrate.The total intake of dry matter varied between 3.12%and 3.24% in relation to live body weight (BW). No significantdifferences were observed (P≥0.05) in the total consumptionof dry matter among cows with the same trial. Inthe ration without mulberry (0%), forage made up 42% of thetotal dry matter intake and in the 60% mulberry ration, 86%.The intake of mulberry was close to 2%/BW in the 60% ration.The substitution ratio was 677 g/animal/day of concentrateddry matter per kg of mulberry dry matter added to thediet, in addition to the substitution of 323 g/animal/day ofblack sorghum and soybean mix. The protein replaced was576 g/animal/day of concentrate and 424 g/animal/day ofblack sorghum and soybean mix per each kg of mulberry crudeprotein. Each megacalorie of digestible energy of mulberryadded to the diet, substituted 0.675 mcal/animal/day ofenergy in the concentrate feed and 0.325 mcal/animal/day ofthe black sorghum and soybean mix. Significant differences(P<0.05) appeared among the four different levels of addedmulberry in relation to the live body weight of the cattle andin their daily milk production. Within the same diet there wereno differences (P>0.05) between the initial and final bodyweight of the animals and the variations in daily milk productionwere small.