RESUMEN
The objective of this investigate was effect of different levels of triticale on potato plant waste silage degradability byGas production. This technique by mixtures of filtered rumen liquid of five Holstein male cattle in times of 0, 2, 4, 6, 8, 12, 24, 48, 72 and 96 hours were performed. The resultreported that gas volume at 16h and 24h incubation of control treatment, were33.7 ml/200mg DM and 39.05 ml/200mg DM respectively. The gas test, from soluble fraction (ac%), and from insoluble fraction (bc%), rate constant of gas production during incubation (cc%) and the potential gas production (a+ bc%) contents of control treatment were 11.1, 47.7, 0.02 (ml/h) and 58.1 ml/200mg DM, but for treatment 6% were 21.9, 55.25, 0.04 (ml/h) and 77.15 ml/200 mg DM. According to data, potato plant waste silage could use as an excellent source of dietary nutrient in ruminant animals.
RESUMEN
The aim of this study was evaluate of Antibiotics in Ruminant Animals. There have been developing controversies surrounding the use of antibiotics as growth promoters for food animals. These components are used at low doses in animal feeds and are investigated to improve the quality of the product, by a lower percentage of fat and higher protein content in the meat. Other advances of the use of antibiotic growth-promoters include control of zoonotic pathogens such as Salmonella, Escherichia coli and enterococci. Antibiotic growth promoters enhance the efficiency of nutrient utilization, improving retention of Nitrogen and Phosphor and decreasing excretion when nutrient intake matches requirements, therefore, Use of any antibiotic is related by the selection of resistance in pathogenic bacteria and it has been argued that the use of antibiotic growth-promoters imposes a selection pressure for bacteria that are resistant to antibiotics that may be used in clinical or veterinary practice, therefore compromising the continued use of antimicrobial chemotherapy. This paper studies the use of antibiotics as growth promoters and then examines some of the alternative methods for achieving meat of high quality.