Sensitivity and specificity of the FAMACHA© system in growing lambs

Cintra, Maria Christine Rizzon; Ollhoff, Rüdiger Daniel; Sotomaior, Cristina Santos

doi:10.1016/j.vetpar.2018.01.005

Cited by 19 publications

(13 citation statements)

References 28 publications

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“…In some cases, more animals were treated in the FMC group than in the EPG (Figure 2), reaffirming that the degree of anemia should be used along other clinical and performance indicators for a more appropriate treatment criteria for lambs (Cintra et al, 2018). Besides, more EPG animals (6.7%; Figure 3) received between five and six doses, but probably some animals would not need as much treatment if FMC was used in combination.…”

Section: Discussionmentioning

confidence: 71%

“…This variation did not affect animal performance in the present study, but the use of other criteria such as FEC or clinical signs (i.e., diarrhea) is recommended. Cintra et al (2018) reported a low sensitivity of growing lambs to FMC and recommended that it should not be used alone to evaluate young animals. It is known that the small ocular area of young animals makes the FMC evaluations more difficult (Fernandes et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

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Can the strategies for endoparasite control affect the productivity of lamb production systems on pastures?

et al. 2019

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Ruminants Full-length research article Can the strategies for endoparasite control affect the productivity of lamb production systems on pastures? ABSTRACT-The objective of this study was to evaluate the productivity and carcass traits of unweaned Suffolk lambs finished on pasture and subjected to three strategies for endoparasite control: prophylactic treatment of all animals every 28 days; treatment of animals with a cut off number of nematode fecal egg count (FEC) ≥ 700; and treatment of animals using the FAMACHA scores ≥ 3. Average daily weight gain (ADG) and FEC were evaluated every 14 days for 112 days. Body condition scores and carcass characteristics were assessed before and after slaughter, respectively. Animal productivity was calculated based on animal stocking rate, ADG, and weight variation per area. Animal productivity, pasture, and carcass characteristics did not differ among strategies of parasite control. Parasite control strategies did not affect the productivity of lambs on pasture or carcass characteristics. Thus, the use of selective treatments can be considered advantageous due to decreased selection pressure for resistant parasite populations and lower use of drugs.

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Section: Discussionmentioning

confidence: 71%

Section: Discussionmentioning

confidence: 99%

Can the strategies for endoparasite control affect the productivity of lamb production systems on pastures?

et al. 2019

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“…The FAMACHA scoring system has a lower sensitivity for anemia detection in lambs than adults ( Cintra et al, 2018 ). Although there is a general positive relationship with increasing FEC, the levels of FEC within FAMACHA score are quite variable ( Cintra et al, 2018 ). Given no weight difference between FAMACHA scores of 1 and 2, producers should continue to not deworm these animals.…”

Section: Resultsmentioning

confidence: 99%

Evaluating the relationship between fecal egg count, FAMACHA score, and weight in dewormed and non-dewormed Katahdin rams during a parasite challenge

Galyon

Zajac

Wright

et al. 2020

Translational Animal Science

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The objective of this study was to evaluate and to estimate the relationship between fecal egg counts (FEC) and FAMACHA© score and the body weight of growing Katahdin rams during a parasite challenge. One of the largest factors negatively influencing reproduction and economics in the sheep industry is gastrointestinal nematode (GIN) parasites. Due to anthelmintic resistance of these parasites, animals are selected for parasite resistance using FEC and FAMACHA© scores. Data were used from the Virginia Tech Southwest Agricultural Research and Extension Center Ram Test in Glade Spring, VA from the years 2012 to 2018 in which animals were tested in 14-day intervals for 70 days. Mixed models for repeated weight measurements were made from backwards stepwise selection to evaluate relationships between weight and GIN FEC. A total of 576 animals within 23 contemporary groups derived from test year and pasture group were analyzed. Ram, contemporary group, and consignor were considered random effects, and fixed effects were birth type, test day, age, age squared, starting weight, FEC, and FAMACHA© score. Pairwise contrasts were used in the statistical analysis of parameters and their interactions. Weight and age were found to have a quadratic relationship. Increased FEC was associated with weight loss at a rate of 0.00030 kg/FEC (P < 0.0001). Animals dewormed at any point during the trial weighed less than those that were not and increased with test day to a maximum difference of 4.66 kg (P < 0.001). FAMACHA© score was found to be significant (P < 0.05), but a direct relationship with weight was not conclusive. Overall, rams with severe enough parasite load to require deworming had lesser weights, which could impact profitability of sheep production and reinforced the need to select animals that had greater innate parasite resistance.

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“…Animals were weighed on days 0, 7 and 35using an electronic scale. Levels of anemia were also estimated on these days based on the coloration of mucosal tissues according to the Famacha® score card (CINTRA et al, 2018). Normality tests were performed on all the variables using the Shapiro-Wilk test.…”

Section: Methodsmentioning

confidence: 99%

Vitamin and mineral supplementation improves erythrocytic recovery and productive performance of infected by gastrointestinal parasites

Farias

Cardoso

Feijó

et al. 2021

Rev. bras. saúde prod. anim.

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The objective of the present study was to evaluate the effect of a vitamin and mineral complex, associated with the application of an efficient anthelmintic, in parasitized lambs, with characteristic signs of gastrointestinal nematode infection, on hematological clinical parameters of clinical improvementand weight gain. 60 lambs Australian Merino breed, with 8 and 9 months of age, were segregated in four groups: control (no supplemetation); formula 1 (Iron Dextran, Organic Phosphorus, Cyanocobalamin and Vitamin k); formula 2 (Iron Dextran, Organic Phosphorus and Cyanocobalamin); and formula 3 (Vitamin k). Hematocrit, prothrombin time, total plasma proteins, color of the conjunctiva and weight gain were analyzed. The results were submitted to analysis of variance (ANOVA) through the repeated measures test. There was no statistical difference between treatments for the variables of hematocrit (P = 0.564), prothrombin time (P = 0.911) and plasma proteins (P = 0.6), for the conjunctiva color variable there was a difference (P = 0.052 ), with greater results for the groups supplemented with Vitamin K, Butafosfan, Cyanocobalamin and Iron (groups F1 and F3), as well as those same groups reached higher body weight at D35 (P = 0.023). It can be concluded that the administration of vitamin and mineral complex, associated with efficient anthelmintic, promoted a better performance in parasitized lambs.

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Sensitivity and specificity of the FAMACHA© system in growing lambs

Cited by 19 publications

References 28 publications

Can the strategies for endoparasite control affect the productivity of lamb production systems on pastures?

Can the strategies for endoparasite control affect the productivity of lamb production systems on pastures?

Evaluating the relationship between fecal egg count, FAMACHA score, and weight in dewormed and non-dewormed Katahdin rams during a parasite challenge

Vitamin and mineral supplementation improves erythrocytic recovery and productive performance of infected by gastrointestinal parasites

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