Zeolite supplementation effects on lamb growth and gastrointestinal nematode infection, and economic analysis

Sérgio Novita Esteves, Ana Carolina de Souza Chagas, Márcia Cristina de Sena Oliveira, Waldomiro Barioni Jr, Alberto C.C. Bernardi

Resumo


Z eolite as a dietary supplement can improve animal resistance and resilience against gastrointestinal parasites. The
effects of different levels of zeolite supplementation on gastrointestinal nematode infection, growth performance, and economic
viability of male and female Santa Ines lambs were investigated. Four zeolite levels (0, 25, 50, and 75 g per day) were fed to 110
day-old animals in a randomized block experimental design. Eggs per gram of feces (EPG), total serum protein (TSP), and packed cell
volume (PCV) were measured individually every week. The animals were weighed every 14 days and coprocultures were prepared.
Male animals that reached an average live weight of 34 kg were harvested. The economic viability analysis of the experimental diets
was based on feedlot periods of 56 and 91 days. Dietary supplementation with zeolite did not signifi cantly mitigate infections by
nematodes and did not affect TSP, PCV, or feedlot lamb growth performance. Therefore, zeolite was not an effective (P > 0.05) dietary
supplement for avoiding gastrointestinal nematode infection or improving growth performance. Male animals slaughtered after 56 days
of feeding were more economically viable (P < 0.05) than those slaughtered after 91 days. Feedlotting demonstrated that male animals
had superior performance (P < 0.05) and better economic (P < 0.05) results than female animals.


Palavras-chave


Stilbite. Santa Inês lamb. Meat production. Performance. Profit.

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