Regarding the prevalence by municipalities, there was no statistical association (p ≥ 0.05) indicating that the prevalence was similar in the region under study. The overall prevalence of gastrointestinal parasites was 91%, being the highest values for Balantidium coli and Eimeria sp. Fecal samples were taken directly from the rectum and processed by four coprological techniques. 279 animals were sampled from thirty-two backyard pig farms located in the Bucaramanga, Floridablanca, Giron and Piedecuesta municipalities, from Bucaramanga Metropolitan Area, Colombia. Therefore, the aim of this study was to determine the prevalence and risk factors for gastrointestinal parasites in backyard pigs. The results suggest that including the hydrolysable tannin extracts into the calves' diets could be a sustainable alternative for controlling nematodes like Haemonchus in feedlot cattle.īackyard pigs have been associated with poor sanitary conditions and the development of parasitic diseases, often causing public health and food safety problems. The addition of 15 g kg(-1) DM of TH decreased (p <= 0.05) the amount of EGF of Haemonchus sp and Cooperia sp, by 61 and 68 % respectively.

The procedure was similar to experiment 1, the EGF values were transformed to Log(10) (n+17), and an ANOVA was carried out. The treatments were as follows: 1) 0 % de TE (Control), and 2) 15 g kg(-1) DM of TH. The experimental design was completely randomized and we used 40 Brahman calves (212 +/- 8.8 kg), kept in 8 pens. Experiment 2: Using results of Experiment 1 as a base, the number of experimental units was duplicated and was increased 2.5 times to test the absence of the effect of TH in the egg excretion of Cooperia. The TH decreased the EGF of Haemonchus spp by 58 (p=0.10). The value of the eggs per gram of feces (EGF) was transformed to Log(10) (n+40), and was analyze using ANOVA. Feces samples were collected: 3 d before and 3 d after administering the treatment for 28 d. The experimental design was completely randomized and the treatments were: 1) 0 % of TE (control), 2) 6 g kg(-1) DM TE condensed (TC), and 3) 6 g kg(-1) DM of hydrolysable TE (TH). Experiment 1: Thirty Brahman calves (227 +/- 13.9 kg) were housed in six pens (6 x 12 m) with 24 m(2) roof, 2.4 m feed bunker, and a 0.6 m water trough. The objective of this study was to evaluate the influence of TE addition on the amount of nematodes in calves at the beginning of the fattening process.

The consumption of plants containing tannins reduce the burden caused by nematodes in grazing ruminants, but there is little information related to how the addition of tannin extracts (TE) to the diet of feedlot calves diet affects the amount of nematodes. The diseases caused by nematodes affect the health and productivity of feedlot calves. We conclude that both cameras have features of reliability, speed, simplicity and low cost, but the TCI offers advantages in detection of eggs (positive animals) and accumulators animal identifi cation. The comparison of the discrepancies was made with the McNemar test and the agreement was evaluated with the Kappa Index. The comparison between the eggs per gram of faeces counts (HPG) was realized by mean of Wilcoxon test and the correlation through the coeffi cient of ranks of Spearman. A total of 40 samples of faeces were gathered directly of the rectum of each animal and examined for both techniques. For the study 40 crossbreed calves of both sexes were used. The aims of this work, was to compare the classical coproscopical technique of McMaster (TCC) against the McMaster INTA (TCI) technique, both are eggs counting slide used for the parasitological diagnosis. The control of parasitic infections need of techniques able to determine the presence of the parasite and the infestation levels within the herd in order to establish the possible relationship among the physiologic alterations, the level of parasitic infection and the affection on the production. Gastrointestinal parasitism in ruminants, represents a major constraint to growth, reproduction and survival in susceptible animals.

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