Salinomycin and virginiamycin for lactating cows supplemented on pasture

Oliveira, Ísis Scatolin de; Sousa, Daniel de Paula; Queiróz, Augusto César de; Macedo, Bruna Gomes; Neves, Camila Garcia; Bianchi, Isabela Eloisa; Teobaldo, Ronyatta Weich

doi:10.1590/0103-9016-2013-0401

Cited by 5 publications

(3 citation statements)

References 18 publications

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“…Our findings are in conflict with those reported by Oliveira et al (2015), who worked with lactating Holstein/Zebu cows by comparing control group, without antimicrobials, with a group receiving salinomycin at the dose of 120 mg kg −1 LW, a group receiving VM at 150 mg kg -1 LW, and a group receiving salinomycin plus VM at 120 and 150 mg kg -1 LW, respectively. The authors concluded that there was no difference in DM digestibility.…”

Section: Discussioncontrasting

confidence: 99%

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Use of banana (Musa sp.) pseudostem hay in feedlot sheep feeding

Silveira

Pedreira

Rei

et al. 2020

Revista Brasileira De Zootecnia

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RuminantsFull-length research article Use of banana (Musa sp.) pseudostem hay in feedlot sheep feeding ABSTRACT -The objective with this study was to evaluate intake, feeding behavior, rumen fluid characteristics, performance, and nutrient digestibility of sheep fed banana pseudostem hay (BPH) with and without virginiamycin (VM). Thirty-two uncastrated male crossbred Dorper × Santa Inês lambs at approximately five months of age, with an average initial body weight of 25.00±1.95 kg, were used in the experiment. Four diets were tested, as follows: Tifton grass hay (TGH) plus concentrate with VM; BPH replacing 60% of TGH plus concentrate with VM; TGH plus concentrate without VM; and BPH replacing 60% of TGH plus concentrate without VM. The experiment was set up as a completely randomized design in a 2×2 factorial arrangement, in which the factors were represented by BPH and TGH with and without VM, organized in an orthogonal contrast. Banana pseudostem hay inclusion influenced nutrient intake, except for non-fibrous carbohydrates corrected for ash and protein. Neither idling nor water intake times were changed by VM inclusion or banana pseudostem hay addition. Rumen fluid pH did not differ among the contrasts (THV+BHV) vs. (TH+BH), THV vs. TH, and BHV vs. BH, which were used to evaluate VM influence. Banana pseudostem increased rumen fluid pH in the contrast THV vs. BHV, both treatments including VM. Mean temperature of rumen fluid was 34.07 °C, and it did not change by inclusions of VM or banana pseudostem hay. No difference was observed for crude protein digestibility in the evaluated contrasts. When associated with virginiamycin, banana pseudostem hay provides satisfactory performance and nutritional parameters for feedlot sheep. Virginiamycin does not change the performance or nutritional parameters of these animals when Tifton grass hay is used as the only roughage source.

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Section: Discussioncontrasting

confidence: 99%

“…Disagreeing with our observations, Oliveira et al (2015) worked with Holstein/Zebu cows and did not find differences in EE digestibility including VM or associating VM with salinomycin in the diet as compared with the group with antimicrobial agents.…”

Section: Discussionsupporting

confidence: 68%

Use of banana (Musa sp.) pseudostem hay in feedlot sheep feeding

Silveira

Pedreira

Rei

et al. 2020

Revista Brasileira De Zootecnia

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“…Goodrich et al (1984) evaluating performance data of approximately 16,000 cattle, reported that animals fed monensin gained more weight and consumed less feed than animals fed control diets. Additionally, Oliveira et al (2015) reported a decrease in 14% on pasture DMI when supplemented lactating cows on pasture received virginiamycin. Rogers et al (1995) conducted a series of studies to evaluate the effects of virginiamycin on performance of feedlot cattle and observed an increase in ADG and feed conversion when animals were fed diets with the additive inclusion.…”

Section: Discussionmentioning

confidence: 99%

Association of additives in supplemented grazing cattle during the finishing phase at the rainy season

Dallantonia¹,

Silva²,

Granja-Salcedo³

et al. 2023

Revista Brasileira De Zootecnia

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The objectives were to evaluate the effects of monensin and virginiamycin, alone or combined, on supplemented Nellore cattle grazing tropical grass during the rainy season. Two experiments were conducted simultaneously to evaluate intake, digestibility, CH 4 emissions, blood parameters, performance, and carcass characteristics (Exp. 1), and ruminal fermentation and relative abundance of ruminal microorganisms (Exp. 2). Animals (n = 92 Exp. 1 and n = 12 Exp. 2) were distributed in a completely randomized design and allocated in twelve paddocks composed of Urochloa brizantha (A. Rich.) Stapf. cv. Xaraés. A protein-energetic supplementation of 3 g/kg of BW per day was provided to all animals. Supplements were: without additives (WA), monensin alone at 80 mg/kg of product (MN), virginiamycin alone at 150 mg/kg of product (VM), and monensin (80 mg/kg of product) combined with virginiamycin (150 mg/kg of product; MNVM). Treatments did not affect intakes of total dry matter (DM), supplement DM, and nutrients. However, the intakes of forage DM and crude protein decreased in cattle fed MNVM compared with animals fed WA, MN, and VM. Total volatile fatty acids increased in animals fed VM. Ruminal NH 3 -N decreased, and pH increased in animals fed MN, VM, and MNVM. Relative abundance of total F. succinogenes and S. ruminantium decreased and R. flavefaciens increased in animals fed MN and VM at d 118. Treatments had no effect on enteric CH 4 emissions. The average daily gain (ADG) and total gain were greater in cattle fed MNVM than in cattle fed MN. Combination of monensin and virginiamycin altered the rumen microbial populations but did not decrease enteric CH 4 emissions. However, it decreased forage dry matter intake without altering the ADG and total weight gain, leading to an increase in feed efficiency. Results from this study indicate an advantage in including feed additives combined in the diet of supplemented Nellore cattle grazing tropical grass during the rainy season.

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