7 research outputs found

    Pašarai ir gyvulių šėrimas ekologiniuose ūkiuose : mokomoji knyga

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    Bibliogr.: p. 58Vytauto Didžiojo universitetasŽemės ūkio akademij

    Pašarų energijos vertinimo metodai : metodiniai patarimai

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    Bibliogr.: p. 20 (13 pavad.)Vytauto Didžiojo universitetasŽemės ūkio akademij

    Broilerių auginimas : mokomoji knyga

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    Vytauto Didžiojo universitetasŽemės ūkio akademij

    Fermentinių preparatų naudojimas penimų kiaulių racionuose

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    Santr. anglBibliogr.: p. 109 (6 pavad.)Vytauto Didžiojo universitetasŽemės ūkio akademij

    Influence of cyanobacteria Arthrospira (Spirulina) platensis biomass additives towards the body condition of lactation cows and biochemical milk indexes

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    The objective of the research was to estimate the influence of cyanobacteria Arthrospira (Spirulina) platensis biomass additive on cows' body condition, milk productivity and biochemical indexes at the beginning of lactation. Two parallel groups of Lithuanian black and white cows in their early lactation period were used for the experiment. During the 90-day experimental period, they were fed on almost the same ration: the experimental group received 200 g of cyanobacteria Arthrospira (Spirulina) platensis additives daily, mixed with the combined feed. The body condition of cows was scored according to a 5-point scale system in their dry period, after calving, and after the first, second or third month of lactation. Their productivity, milk composition and quality indexes were estimated during control milking: milk yields - on the farm and rates of composition and quality - in the laboratory of SE 'Pieno tyrimai'. The experiment showed that the cows of the experimental group which received 200 g of cyanobacteria Arthrospira (Spirulina) platensis daily during the experimental period became 8.5-11 percent fatter (P < 0.01). Each gave on average 34 kg milk per day in the beginning of their lactation, or 6 kg more than those from the controlled group (P < 0.05). Throughout the 90-day experiment, the average income from the milk of one cow from the experimental group was 378 Lt, or 21% more than from the controlled group. The use of cyanobacteria additives was economically effective, because 1 Lt costs for 'Spirulina platensis' increased income from the milk by 8.4 LtVytauto Didžiojo universitetasŽemės ūkio akademij

    The Efficiency of Some Energy and Calcium Metabolism Activating Preparations in Cows Ration

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    Atliktas eksperimentinis karvių šėrimo bandymas, kurio tikslas – nustatyti kompleksinių kalcio ir energijos metabolizmą aktyvinančių preparatų „Acetona Dry“ ir „Santoenergetik“ poveikį karvių parezės po apsiveršiavimo bei ketozės ankstyvuoju laktacijos periodu rizikai mažinti, pieno kiekiui ir jo sudėties rodikliams. Bandymams analogų principu buvo sudarytos dvi užtrūkusių karvių (kontrolinė ir bandomoji) grupės (n = 9). Abiejų grupių analogės paruošiamuoju periodu (40 d.) buvo šeriamos vienodu racionu (šienas, šienainis ir visaverčiai kombinuotieji pašarai). Tiriamuoju laikotarpiu (80 d.) kontrolinės grupės karvės toliau buvo šeriamos tuo pačiu racionu, o bandomosios – tris savaites prieš veršiavimąsi vietoj analogiško kombinuotųjų pašarų kiekio gavo po 1,5 kg specialaus stimuliuojančio Ca apykaitą ir pasižyminčio probiotiniu poveikiu preparato „Santoenergetik“, o po apsiveršiavimo – vietoj jo buvo duodama po 0,5 kg stimuliuojančio energijos apykaitą ir pasižyminčiu antiketoziniu poveikiu priedo. Jų poveikiui nustatyti buvo registruojami karvių susirgimai Ca apykaitos sutrikimų pobūdžio ligomis (pareze ir ketoze), produktyvumo bei pieno kokybinių rodiklių dinamikaA feeding trial with cows was carried out over the period of 120 days to evaluate the influence of preparation " Acetona Dry" on postnatal paresis risk relief, wellness of parturient cows, their productivity, milk composition and quality and calf resistance. The influence of preparation "Santoenergetik" on Ketosis prophylaxis, cows' health, appetite, productivity and reproduction in the period of early lactation was also determined. Two analogical groups of dry cows (n=9) were selected for research. During preparatory period cows of both groups were feed with equal ration (hay, haylage and combined fod¬der). During the experimental period cows of the control group received the same ration and cows of the experimental group three weeks before parturi¬tion were teed with preparation "Acetona Dry" 1.5 kg per day instead of concentrate and after parturition - with 0.5 kg of preparation "Santoenergetik". The research results show that cows of the experimental group are more productive and produce better composition and quality milk: fat - 0.52 % (p0.05), lower number of somatic cells - by 1.2 times and less urea (4.0 mg%) (p<0.05). The calves are better and livelier than tlie analogues of the control group. Average milk yield from experimental group cows is 1416 kg of natural or 1529 kg of recalculated milk, which is by 6 and 16 % accordingly higher than that from cows of the control group (p<0.05) over 60 days of early lactationVytauto Didžiojo universitetasŽemės ūkio akademij
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