Effect of the environment on the physiological responses of goats raised in hot weather receiving different sources of roughage

Authors

DOI:

https://doi.org/10.33448/rsd-v12i8.42657

Keywords:

Goat farming; Physiological responses; Semi-arid region; Hematology.

Abstract

The objective was to evaluate the effects of the environment through the physiological responses of mixed breed goats, under semi-arid conditions in Santana do Ipanema. Thirty goats aged one year old and average weight between 24 and 28 kg were used. The following parameters were studied: rectal temperature (TR) where a clinical thermometer was introduced directly from the animal's rectum, respiratory rate (RR) obtained by indirect auscultation of heart sounds. The beats were obtained with a stethoscope placed directly on the left thoracic region, counting the number of beats during 20 seconds. Air temperature and relative humidity were recorded using a portable psychrometer in the experimental area. Physiological and environmental parameters were recorded every 3 hours. Blood samples from each animal were taken every 8 days, performing the erythrogram (red blood cell count, hematocrit and hemoglobin), and the leukogram (total leukocyte count). The data obtained were statistically evaluated using the Tukey test at a significance level of 5%. It was observed that the TR was not affected by the diets, remaining above the normal range in all diets. The RR and HR suffered a significant effect (p< 0.05) also remaining above the ideal. The histogram showed segmented lymphocytes, monocytes and rods with significant differences, but within the ideal range for the species. It can be concluded that the observed parameters were more influenced by the climate than the source of roughage, making it safe to use all the studied diets.

Author Biographies

Danívia Maria Ferreira de Moura, Universidade Estadual de Alagoas

Zootecnista graduada pela Universidade Estadual de Alagoas. 

José Crisólogo de Sales Silva, Universidade Estadual de Alagoas

Agrônomo, Doutor em Química e Biotecnologia pela Universidade Federal de Alagoas; Professor Titular da Universidade Estadual de Alagoas

Adibe Luiz Abdalla, Universidade de São Paulo

Associate Professor of the University of São Paulo, with undergraduate studies in Agronomy and graduate studies in Animal Nutrition and Use of Nuclear Techniques in Mineral Metabolism in Ruminants. Post-doc studies of whole crop products for dairy cows at Reading University (UK) and Researcher scholar at UC Davis (USA). Since 1985, researcher at CENA/USP in the area of nuclear and related techniques in agricultural productivity studies. Consultant for the International Atomic Energy Agency and ad hoc consultant of FAPESP, CNPq, EMBRAPA and PADCT-MIC. Have experience in animal science with an emphasis in animal feed assessment, quantification and qualification of bioactive molecules and nutritional strategies for sustainable production of ruminants and food security: - use of radiotracers in body composition (3H), bioavailability and mineral metabolism in livestock (32P, 45Ca), radioimmunoassay (125I); - in vitro gas production (syringes and transducer) to evaluate co-products, tanniniferous plants and plant secondary metabolites as modifiers of ruminal fermentation; - use of tracers for quantifying the ruminal microbial mass (15N and purine derivatives) and diet constituent (δ13C and δ 15N); - in vivo quantification of enteric methane production (chambers and SF6 tracer) in studies of strategies to increase the sustainable and secure production of ruminants.

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Published

30/08/2023

How to Cite

MOURA, D. M. F. de .; SANTOS, N. S. .; SILVA, J. C. de S. .; OLIVEIRA, A. R. N. de .; ABDALLA, A. L. . Effect of the environment on the physiological responses of goats raised in hot weather receiving different sources of roughage. Research, Society and Development, [S. l.], v. 12, n. 8, p. e16412842657, 2023. DOI: 10.33448/rsd-v12i8.42657. Disponível em: https://rsdjournal.org/index.php/rsd/article/view/42657. Acesso em: 17 jul. 2024.

Issue

Vol. 12 No. 8

Section

Agrarian and Biological Sciences

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Copyright (c) 2023 Danívia Maria Ferreira de Moura; Neilson Silva Santos; José Crisólogo de Sales Silva; Alex Romualdo Nunes de Oliveira; Adibe Luiz Abdalla

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