Clinico-Pathological Responses of Sheep to Graded Levels of Brachiaria decumbens Diets

Authors

  • Kalai Vaani Muniandy Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
  • Eric Lim Teik Chung Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
  • Mohd Farhan Hanif Reduan Department of Paraclinical Studies, Faculty of Veterinary Medicine, Universiti Malaysia Kelantan, Pengkalan Chepa 16100, Kota Bharu, Kelantan, Malaysia.
  • Bura Thlama Paul Veterinary Teaching Hospital, Faculty of Veterinary Medicine, University of Maiduguri, 600230 Maiduguri, Borno State, Nigeria.
  • Mimi Syazwani Jaapar Department of Animal Science, Faculty of Agriculture, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
  • Muhammad Hazziq Mohd Hamdan Department of Animal Science, Faculty of Agriculture, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
  • Faez Firdaus Abdullah Jesse Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.

Keywords:

Brachiaria decumbens, clinical signs, gross pathology, histopathology, organ morphometric, sheep

Abstract

Brachiaria decumbens is a highly productive tropical grass used for ruminant production. However, it can cause hepatogenous photosensitization, general ill-thrift, and deaths in ruminants due to the presence of steroidal saponins. This study determined the acute and chronic clinico-pathological responses of sheep to graded levels of B. decumbens diet. A total of 30 male crossbred Dorper sheep (six-month-old) used in the study were randomly divided into three treatment groups of 10 sheep each. Treatment 1 (T1), which served as the control group, was fed with Pennisetum purpureum and concentrates, whereas Treatments 2 (T2) and 3 (T3) were fed low (10%) and high (60%) levels of B. decumbens, respectively. The study period was divided into acute (7 days) and chronic (90 days) phases. The rectal temperature, respiratory rate, heart rate, and mucous membrane color were monitored throughout the experiment. At the end of each stage, five animals were selected from each treatment group and euthanized by slaughter to collect organs for gross pathology, organ morphometric and histopathological evaluations. The treated animals did not show significant changes (p>0.05) in rectal temperature, pulse, and respiration rates throughout the study period. However, the mucous membranes were noticeably becoming pale starting from day 60 to 90 in T3 and during the chronic phase (day 90) in T2. There was no lesion or morphometric change in any organ at postmortem examination. At histopathology, both T2 and T3 exhibited mild to moderate necrosis, hemorrhage, congestion, hydropic degeneration and edema (p<0.05) in the liver and brain. In summary, this study has established that both low and high levels of B. decumbens diets cause chronic brain and liver damages in the sheep model. This study can be used for future research on the effects of B. decumbens on grazing animals.

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Published

2021-07-01

How to Cite

Muniandy, K. V. ., Chung, E. L. T., Reduan, M. F. H. ., Paul, B. T. ., Jaapar, M. S. ., Hamdan, M. H. M. ., & Jesse, F. F. A. . (2021). Clinico-Pathological Responses of Sheep to Graded Levels of Brachiaria decumbens Diets . Journal of Advanced Veterinary Research, 11(3), 167-173. Retrieved from https://advetresearch.com/index.php/AVR/article/view/735

Issue

Section

Original Research