Wyniki wyszukiwania

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Metabolism in periparturient dairy cows fed rumen-protected choline

100%

Pinotti L., Campagnoli A., Sangalli L., Rebucci R., Dell'Orto V., Baldi A.

Journal of Animal and Feed Sciences. Supplement

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2004

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tom 13

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nr 1

2

The effect of different selenium sources during the finishing phase on beef quality

100%

Sgoifo Rossi C. A., Compiani R., Baldi G., Bernardi C. E. M., Muraro M., Marden J.-P., Dell'Orto V.

Journal of Animal and Feed Sciences

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2015

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tom 24

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nr 2

Selenium (Se) is involved in several biological functions and its supplementation is necessary for farm animals. Se can be provided in organic or inorganic forms, which are metabolized differently. The aim of this study was to compare the effects of switching the Se source in the last 60 days of fattening on beef quality and Se content in meat. Charolaise beef heifers supplemented since the beginning of the fattening period with sodium selenite (162 heads; 517 ± 61 days of age) were divided into two groups, fed the same diet, in which Se (0.2 mg Se · kg–1 DM of feed) was provided as sodium selenite (SS; 82 heads, 450.7 ± 33.7 kg body weight – BW) or selenium-enriched yeast (Se-Y; 80 heads, 454.6 ± 41.7 kg BW). The Se source did not affect growth performance, meat centesimal composition, thawing loss, cooking or drip losses, and pH during 8 days of aerobic storage. Se-Y supplementation improved the meat Se content (P < 0.001) and tended to reduce shear force (P = 0.076) at 48 h post mortem. Lightness (P < 0.01) and yellowness (P < 0.01) decreased with the duration of storage and were higher in the Se-Y group compared with the SS group during 8 days of storage. Meat from group Se-Y also showed a better visual score for colour (P < 0.01), odour (P < 0.05), surface wetness (P < 0.05) and overall appearance (P < 0.01). Under the given experimental conditions, switching beef heifers from inorganic to organic Se in the last two months of fattening improved meat tenderness, shelf life, colour stability and muscle Se content.

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Effects of species-specific probiotic addition to milk replacer on calf health and performance during the first month of life

84%

Agazzi A., Tirloni E., Stella S., Maroccolo S., Ripamonti B., Bersani C., Caputo J. M., Dell'Orto V., Rota N., Savoini G.

Annals of Animal Science

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2014

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tom 14

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nr 1

4

The effect of plant polyphenols on the antioxidant defence system of weaned piglets subjected to an Escherichia coli challenge

84%

Jiang X. R., Zhang H. J., Montovani G., Alborali G. L., Caputo J. M., Savoini G., Dell'Orto V., Bontempo V.

Journal of Animal and Feed Sciences

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2014

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tom 23

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nr 4

The goal of this study was to evaluate the effect of an optimized plant polyphenol (PP) mixture consisting of polyphenols extracted from apples, grape seeds, green teas and olive leaves on the systemic antioxidant capacity in piglets orally challenged with Escherichia coli (E. coli). A total of 24 piglets were weaned at 28 days and allocated to 4 groups for a 42-d experiment with a 2 × 2 factorial design comparing different dietary treatments [a basal diet without (CTR) or with 0.1% of the optimized PP mixture (PP)] and oral E. coli challenges on days 21 and 25 (saline or E. coli). On days 25, 27 and 34 of the trial, one piglet from each pen was selected for blood sampling. The E. coli challenge decreased the gain-to-feed ratio (G:F) from day 21 to day 42 (P < 0.10), reduced plasma superoxide anion (SAIC) and hydroxyl radical (HRIC) inhibiting capacities, and increased the plasma ceruloplasmin content on day 27 (P < 0.10). PP supplementation increased the G:F ratio from day 21 to day 42 (P < 0.10). Compared with the CTR diet, PP supplementation increased plasma GSH-Px activity on day 25 and plasma T-AOC activity on day 27 (P < 0.10), and dietary PP increased plasma SAIC on day 27 and plasma HRIC on day 34 (P < 0.10). These results suggest that PP supplementation may improve the antioxidant status of post-weaning piglets and counteract some of the negative effects that occur when piglets are challenged with E. coli.

5

Organic selenium supplementation improves growth parameters, immune and antioxidant status of newly received beef cattle

84%

Sgoifo Rossi C. A., Compiani R., Baldi G., Muraro M., Marden J. P., Rossi R., Pastorelli G., Corino C., Dell’Orto V.

Journal of Animal and Feed Sciences

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2017

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tom 26

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nr 2

The effects of dietary supplementation with selenium enriched yeast on growth, immune and antioxidant status were assessed on 228 newly received beef cattle. During the adaptation phase (54 days), the animals were housed in 38 pens (19 pens per treatment) and supplemented with 0.32 mg · kg−1 DM of Se as sodium selenite (CTR) or selenium enriched yeast (SeY). At days 0, 19 and 54 the animals were weighed and blood samples were collected from one healthy animal per pen. During the experimental trial, bovine respiratory disease (BRD) occurrence was monitored. Blood antioxidant status, selenium serum concentration, bovine herpesvirus-1 (BHV-1) antibody titer and serum bactericidal activity were determined. Growth performance was improved (P < 0.05) and BRD occurrence was reduced (P = 0.06) in SeY group. SeY supplementation increased BHV-1 antibody titre after vaccination, highlighting a positive impact of SeY supplementation on immune system functioning. SeY supplementation improved (P < 0.01) selenium serum concentration and positively affected antioxidant status, expressed as Kit Radicaux Libres value, that tended to be higher (P = 0.07) in SeY group, due to Se higher bioavailability. The obtained results suggest that dietary supplementation with organic form of selenium improves growth performance, immune and antioxidant status in newly received beef cattle

Ograniczanie wyników

Metabolism in periparturient dairy cows fed rumen-protected choline

The effect of different selenium sources during the finishing phase on beef quality

Effects of species-specific probiotic addition to milk replacer on calf health and performance during the first month of life

The effect of plant polyphenols on the antioxidant defence system of weaned piglets subjected to an Escherichia coli challenge

Organic selenium supplementation improves growth parameters, immune and antioxidant status of newly received beef cattle