Aditivos alimentares na dieta de bovinos confinados

Barducci, R. S.; Sarti, L. M. N.; Millen, D. D.; Pacheco, R. D. L.; Baldin, S. R.; Parra, F. S.; Putarov, Thaila Cristina; Martins, Cyntia Ludovico; Arrigoni, Mário de Beni

doi:10.1590/s0102-09352013000600002

Cited by 4 publications

(2 citation statements)

References 17 publications

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“…In addition, G:F was improved in yearling bulls fed 9 ppm of MON, which is a consequence of the greater ADG just described. Likewise, Barducci et al (2013) fed 30 ppm of MON to feedlot cattle, and did not observe any reduction in the DMI; however the authors reported an increase in ADG, and as a result, an improvement in G:F. In one of the first studies that evaluated doses of MON, Raun, Cooley, Potter, Rathmacher, and Richardson (1976) observed greater ADG (1.01 kg) at the dose of 11 ppm, and best feed-to-gain ratio (8.66) when animals were fed 33 ppm. In this study, the dose of 9 ppm was the closest to the 11 ppm used by Raun et al (1976), which may help to explain the greater ADG observed for yearling bulls fed 9 ppm of MON.…”

Section: Resultsmentioning

confidence: 99%

Different doses of sodium monensin on feedlot performance, carcass characteristics and digestibility of Nellore cattle

et al. 2019

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The objective of this study was to determine the effects of different doses of sodium monensin on feedlot performance, carcass characteristics and nutrient digestibility of Nellore cattle. The experiment was designed as a completely randomized block, replicated 12 times, in which 60 20-months old yearling Nellore bulls (402.52 ± 33.02 kg) were fed in individual pens for 84 days according to the different doses of monensin expressed in ppm (dry matter basis): 0, 9, 18, 27 and 36. As doses of monensin increased, final body weight, average daily gain, gain-to-feed ratio, and dressing percentage were affected cubically (P < 0.03), where animals fed 9 ppm of monensin presented greater average daily gain and better gain-to-feed ratio. Likewise, as dose of monensin increased, dry matter intake, hot carcass weight, and neutral detergent fiber and fecal starch digestibility in finishing period decreased linearly (P < 0.05). In addition, neutral detergent fiber digestibility in adaptation period in creased linearly (P = 0.01) as doses of monensin increased. Thus, based on the results of this study, if monens in is going to be included in finishing diets for feedlot Nellore cattle, the dose of 9 ppm should be considered as the most feasible option.

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Section: Resultsmentioning

confidence: 99%

Different doses of sodium monensin on feedlot performance, carcass characteristics and digestibility of Nellore cattle

et al. 2019

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“…DMI from days 0 to 42 was 8.1% greater for PAP1 compared with CON heifers and steers, whereas PAP3 was intermediate. Previous studies testing the effects of PAP did not report differences in DMI for beef steers ( DiLorenzo et al, 2008 ), cannulated Holstein cows ( Marino et al, 2011 ), or yearling bulls ( Barducci et al, 2013 ) consuming high grain diets. The differences between the previous reports in literature and the current experiment can be potentially explained by the type of diet used (finishing vs. backgrounding diets, respectively) and the slightly variation in PAP formulation of each study ( F. necrophorum or S. bovis ; S. bovis , F. necrophorum , Clostridium aminophilum , Clostridium sticklandii , and Peptostreptococcus anaerobius ; and S. bovis , F. necrophorum , Lactobacillus , and LPS for DiLorenzo et al, 2008 , Marino et al, 2011 , and Barducci et al, 2013 , respectively), which could change the magnitude of results when PAP is provided.…”

Section: Discussionmentioning

confidence: 97%

Impacts of polyclonal antibody preparations from avian origin on nutrient digestibility and performance of backgrounding beef cattle

Silva

Schulmeister

Podversich

et al. 2022

Translational Animal Science

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This study evaluated the effects of feeding an avian-derived polyclonal antibody preparation (PAP; CAMAS, Inc.) against Streptococcus bovis, Fusobacterium necrophorum, and lipopolysaccharides (40, 35, and 25% of the preparation, respectively) on growth performance (Exp. 1) and apparent total tract digestibility of nutrients (Exp. 2) of beef cattle consuming a backgrounding diet. In Exp. 1, Angus crossbred heifers (n = 70; 360 ± 24 kg of initial body weight; BW) and steers (n = 20; 386 ± 24 kg of BW) were used in a generalized randomized block design. Heifers and steers were allocated to 1 of 18 concrete-surfaced pens (6 pens/treatment) to receive a common ad libitum diet [35% cottonseed hulls, 34% dry-rolled corn, and 20% corn gluten pellets; 15.9% crude protein on a dry matter (DM) basis, 1.58 Mcal/kg DM of net energy (NE) of maintenance, and 0.98 Mcal/kg DM of NE of gain] and 1 of the 3 treatments consisting of feeding 1 (PAP1), 3 (PAP3), or 0 g (CON) of PAP per d for 56 d. Feed intake was recorded daily and BW was obtained on d -1, 0, 14, 28, 42, 55, and 56, to assess average daily gain (ADG), dry matter intake (DMI), and gain:feed (G:F). Plasma concentrations of glucose and haptoglobin were measured on d 0, 14, 28, 42, and 56. In Exp. 2, 25 Angus crossbreed steers (390 ± 24 kg BW) were used in a completely randomized design to receive the same diet and treatments from Exp. 1 (CON; n = 8, PAP1; n = 9, and PAP3; n = 8). Following a 14-d adaptation to diets, feed and fecal samples were collected to determine apparent total tract nutrient digestibility. In Exp 1., overall BW, DMI, ADG, G:F, and plasmatic measurements did not differ among treatments over the 56-d period (P ≥ 0.16). However, from d 0 to 14, a quadratic effect was observed for ADG, in which cattle receiving PAP1 had greater (P = 0.04) ADG compared with CON. In Exp. 2, no difference in DMI was observed (P = 0.88), yet DM, organic matter, neutral and acid detergent fiber, and starch digestibility were least (P ≤ 0.05) for PAP3, whereas digestibility of NDF was greatest (P < 0.01) for PAP1. In summary, feeding 1 g per day of a polyclonal antibody preparation against Streptococcus bovis, Fusobacterium necrophorum, and lipopolysaccharides improved growth performance in the first 14 d and increased fiber digestibility of beef cattle consuming a backgrounding diet. Further research is needed to understand the impaired responses on nutrient digestibility when greater doses are provided.

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Voluntary daily fluctuation in dry matter intake is associated to feedlot performance, feeding behavior and rumen morphometrics in beef cattle

et al. 2021

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Aditivos alimentares na dieta de bovinos confinados

Cited by 4 publications

References 17 publications

Different doses of sodium monensin on feedlot performance, carcass characteristics and digestibility of Nellore cattle

Different doses of sodium monensin on feedlot performance, carcass characteristics and digestibility of Nellore cattle

Impacts of polyclonal antibody preparations from avian origin on nutrient digestibility and performance of backgrounding beef cattle

Voluntary daily fluctuation in dry matter intake is associated to feedlot performance, feeding behavior and rumen morphometrics in beef cattle

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