• • • Biological and productive parameters of ruminants fed by the complex of feed additive
To test their physiological parameters ruminants consumed the basic diet in the control period while in the experimental one they received high-energy supplement from needle leaves. Farm experiment took place on control and experimental groups of male calves by the same scheme. Experiment tested ruminal digestion (рН, total amount of volatile fatty acids, ammonium nitrogen content, amylolytic activity, protist and bacterium concentration), biochemical and clinical parameters, average daily and gross weight gain. Energy-vitamin-mineral supplements positively affected microbiological and enzymatic processes in forestomach, increasing total microbial mass, production of volatile fatty acids — by 0.25–1.13 mmol/100 ml, amylolytic activity of ruminal fluid — by 3.27 U/ml (Р < 0,05). Higher values were obtained for total amount of digested nutrients and digestion coefficients of dry, organic matter, crude protein, crude fat — by 6.9% (Р < 0,05), crude fiber — by 2.5%. Sheep blood biochemical characteristics showed improved protein metabolism during the experimental period, leading to higher concentration of total blood protein by 14.1% (Р < 0,05), albumins — by 32.8% (Р <0,05) and albumin/globulin ratio. Gimmers showed higher concentration of blood glucose by 11.4%. Average daily weight gain of male calves exceeded the control group by 6.3%.
Source: http://kormoproizvodstvo.ru/en/6-2018-2/, p. 34
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