Economic viability of anthelmintic treatment in naturally infected beef cattle under different nutritional strategies after weaning

Ramos, Fernanda; Marques, Camila Balconi; Reginato, Caroline Zamperete; Rodrigues, Fernando de Souza; Sangioni, Luís Antonio; Vogel, Fernanda Silveira Flôres; Pötter, Luciana

doi:10.1007/s00436-018-6108-z

Cited by 5 publications

(9 citation statements)

References 33 publications

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“…However, these differences in the degree of infection between groups did not have a statistically significant effect on body weight gain, which was similar in the three groups. This result was unexpected and differed from findings reported in other experiments conducted in Brazil, where anthelmintic treatments usually result in greater body weight gain among young cattle (Ramos et al, 2018), sometimes even when they are treated with drugs that are ineffective due to anthelmintic resistance (Borges et al, 2013;Heckler et al, 2016).…”

Section: Discussioncontrasting

confidence: 99%

Gastrointestinal nematode infections do not hinder the development of Simmental X Nellore crossbred calves raised with a nutritionally enhanced diet

Neves¹,

Carvalho

Amarante

2020

Rev. Bras. Parasitol. Vet.

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An evaluation was made of the effect of anthelmintic treatments on the performance of Simmental X Nellore crossbred calves before and after weaning. To this end, the calves were divided into three groups: (1) treated monthly with a low efficacy anthelmintic drug, ivermectin; (2) treated monthly with a highly effective anthelmintic drug, albendazole; and (3) untreated control group. All the groups in this experiment showed an average fecal egg count of less than 400 eggs per gram (EPG), and no clinical signs of parasitic gastroenteritis. The blood variables were within the normal range and no calf presented anemia. In most of the samplings, mean EPGs were significantly lower (P<0.05) in the group treated with albendazole. The calves received dietary supplementation before and after weaning, which enabled them to gain weight in every month of the experiment and reach a body weight of about 250 kg on the last sampling date, before turning one year old. The anthelmintic treatments did not affect body weight gain, leading to the conclusion that, when fed with suitable dietary supplements, Simmental X Nellore crossbred calves are not affected by gastrointestinal nematode parasites acquired by grazing.

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Section: Discussioncontrasting

confidence: 99%

Gastrointestinal nematode infections do not hinder the development of Simmental X Nellore crossbred calves raised with a nutritionally enhanced diet

Neves¹,

Carvalho

Amarante

2020

Rev. Bras. Parasitol. Vet.

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“…In line with the lower efficacy rates of ivermectin, it was observed that macrocyclic lactones, especially avermectins, were the drugs most used for anthelmintic treatments on the farms studied, similarly to what had been observed in other studies (Pereira, 2011;Suarez & Cristel, 2014). Soutello et al (2007) and Ramos et al (2018Ramos et al ( , 2020 stated that the higher rate of resistance to ivermectin, compared with other drugs, was probably related to its frequent use, and to its easy availability and ease of acquisition by farmers. Use of this drug has also been reported for controlling ticks (R. microplus) and horn flies (H. irritans), which indiscriminately boosts its use in cattle Table 1.…”

Section: Discussionsupporting

confidence: 84%

“…Multiresistance was found in 19/20 herds tested. The phenomenon of multidrug resistance was also observed by Ramos et al (2018Ramos et al ( , 2020 The results regarding ivermectin demonstrated that anthelmintic resistance was present on 95% (19/20) of the farms, with 36.5% of efficacious mean for FECR. In São Paulo, Soutello et al (2007) and Neves et al (2014) detected anthelmintic resistance in 92% (23/25) and 100% (10/10), respectively, of cattle herds evaluated, after treatment with this drug.…”

Section: Discussionmentioning

confidence: 89%

“…Most of the time, these are administered without applying any technical criteria for drug selection, in an empirical and indiscriminate manner. This has additional implications for the effectiveness of anthelmintic treatments, since it causes the emergence and dissemination of parasitic resistance (Neves et al, 2014;Geurden et al, 2015. Ramos et al, 2018.…”

Section: Introductionmentioning

confidence: 99%

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Resistance of bovine gastrointestinal nematodes to four classes of anthelmintics in the semiarid region of Paraíba state, Brazil

Melo

Sousa

Oliveira

et al. 2021

Rev. Bras. Parasitol. Vet.

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The effectiveness of four anthelmintic classes on cattle gastrointestinal nematodes in the semi-arid region of Paraiba State, Brazil, was evaluated. Twenty farms were used, testing 40 animals in each one, totaling 800 animals. Cattle were divided into four groups composed with ten animals: I, treated with albendazole sulfoxide 15%; II, treated with ivermectin 1%; III, treated with closantel 25%; IV, treated with levamisole hydrochloride 7.5%. All treatments were administered subcutaneously. For the Fecal Egg Count Reduction Test (FECRT), individual fecal samples were collected on days 0 and 14, and sent for analysis of egg count per gram of feces (EPG) and larval cultures. It was observed that multiresistance was present in 95% (19/20) of the farms. Resistance to ivermectin and albendazole was observed in 95% (19/20), to closantel in 75% (15/20) and to levamisole in 20% (4/20). The most used management system was semi-intensive (75%; 15/20) and the ivermectin was the most reported drug for controlling helminths (65%; 13/20). Haemonchus spp. was the most prevalent helminth genus. It was concluded that the anthelmintic resistance of bovine gastrointestinal nematodes is high in the semi-arid of Paraíba State, Brazil, with multiresistance observed mainly to ivermectin, albendazole and closantel.

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“…Limiting cattle exposure to the snail intermediate hosts by draining wet pastures or restricting access to them has been shown to reduce liver fluke infection [80,81]. Nutritional management can also reduce the severity of parasite infection or enhance immunity [49,[84][85][86].…”

Section: Beef Cattle Parasitism: Estimating Losses In a Changing Land...mentioning

confidence: 99%

The Economic Impact of Parasitism from Nematodes, Trematodes and Ticks on Beef Cattle Production

Strydom

Lavan

Torres³

et al. 2023

Animals

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Global human population growth requires the consumption of more meat such as beef to meet human needs for protein intake. Cattle parasites are a constant and serious threat to the development of the beef cattle industry. Studies have shown that parasites not only reduce the performance of beef cattle, but also negatively affect the profitability of beef agriculture and have many other impacts, including contributing to the production of greenhouse gases. In addition, some zoonotic parasitic diseases may also threaten human health. Therefore, ongoing cattle parasite research is crucial for continual parasite control and the development of the beef cattle industry. Parasitism challenges profitable beef production by reducing feed efficiency, immune function, reproductive efficiency, liveweight, milk yield, calf yield and carcass weight, and leads to liver condemnations and disease transmission. Globally, beef cattle producers incur billions (US$) in losses due to parasitism annually, with gastrointestinal nematodes (GIN) and cattle ticks causing the greatest economic impact. The enormity of losses justifies parasitic control measures to protect profits and improve animal welfare. Geographical differences in production environment, management practices, climate, cattle age and genotype, parasite epidemiology and susceptibility to chemotherapies necessitate control methods customized for each farm. Appropriate use of anthelmintics, endectocides and acaricides have widely been shown to result in net positive return on investment. Implementing strategic parasite control measures, with thorough knowledge of parasite risk, prevalence, parasiticide resistance profiles and prices can result in positive economic returns for beef cattle farmers in all sectors.

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Economic viability of anthelmintic treatment in naturally infected beef cattle under different nutritional strategies after weaning

Cited by 5 publications

References 33 publications

Gastrointestinal nematode infections do not hinder the development of Simmental X Nellore crossbred calves raised with a nutritionally enhanced diet

Gastrointestinal nematode infections do not hinder the development of Simmental X Nellore crossbred calves raised with a nutritionally enhanced diet

Resistance of bovine gastrointestinal nematodes to four classes of anthelmintics in the semiarid region of Paraíba state, Brazil

The Economic Impact of Parasitism from Nematodes, Trematodes and Ticks on Beef Cattle Production

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