The Concentrations of Rumen Fluid Volatile Fatty Acids and Ammonia, and Rumen Microbial Protein Production in Sheep Given Feed During the Day and Night Time

International Ruminant Seminar: "Eco-friendly livestock production for sustainable agriculture"

农业科学;生态环境科学

Gumilar, D.A.K.W.^1 ; Rianto, E.^1 ; Arifin, M.^1

Faculty of Animal and Agricultural Sciences, Diponegoro University, Semarang-Central-Java, Indonesia^1

关键词: Ammonia concentrations;    Dry matters;    Feeding time;    Microbial proteins;    Night time;    Protein production;    Rumen fluids;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/119/1/012045/pdf
DOI  :  10.1088/1755-1315/119/1/012045

来源: IOP

【 摘 要 】

An experimental study was carried out to investigate the concentrations of volatile (VFA), ammonia and microbial protein production of rumen fluid in sheep given fedd during the day and at night. This study used 12 fat-tailed rams aged 12-18 months and weighed 24,12 ± 25 kg (CV = 10,51%). The rams were fed a complete feed containing 16.64% protein and 68,33% total digestible nutrients (TDN). The rams were allocated into a completely randomised design with 3 treatments and 4 replications. The treatments applied were: T1: day time feeding (6.00 hrs - 18.00 hrs); T2: night time feeding (18.00 hrs - 6.00 hrs); and T3: day and night time feedings (6.00 hrs - 6.00 hrs). The parameters observed were dry matter intake (DMI), rumen VFA concentration, rumen ammonia concentration, rumen rmicrobial protein production and the efficiency of rumen microbial protein production. The results showed that feeding time did not significantly affect (P>0.05) all the parameters observed. Dry matter intake, VFA concentration, ammonia concentration, the microbial protein production of rumen fluid and the efficiency of microbial protein production were 1,073g/d, 49.69 mmol; 4.77 mg N/100 ml, 12,111 g/d and 19.96 g per kg digestible organic matter intake (DOMI), respectively. It is concluded that feeding time did not affect DMI, condition of rumen fluid and rumen microbial protein production in sheep.