Keywords
Parasitism
Meat Breed
Magellan
How to Cite
Abstract
In order to describe the gastrointestinal parasite situation of sheep butcher breeds introduced to Magallanes and its effect on their growth, Lambs of the Polled Dorset, Texel and Suffolk breeds were selected post weaning. 35 males and 35 females per breed were controlled. At 3 months they were weaned and both the monthly weights were obtained, as well as fecal samples for counting and culture. At 3 months of age, there is no difference between the breeds for the total parasite count. A breed*sex*partum interaction was observed for strongylus (P=0.0056), where twin males of the Polled Dorset breed showed a higher parasite load than single males, twin females of the same breed and Suffolk, single males and females. Suffolk and Texel. At 6 months of age, all the animals are parasitized and a breed*sex*partum interaction (P=0.044) was observed for Nematodirus, where single-parturition females of the Suffolk breed had lower counts than twin males of the Suffolk breed. the same breed and of the Texel breed. No difference was observed in larval culture between the evaluated sheep breeds. There was a negative correlation between the weights at 5 months (r2=-0.28; P=0.025), 6 (r2=-0.32; P=0.01) and 7 (r2=-0.37; P =0.004), with the Nematodirus count at 6 months. In conclusion, there would be parasitism in animals of meat breeds, although these counts are low, but the Suffolk breed appears more sensitive than Texel and Polled Dorset, which should be considered in sanitary management.
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