Prevalence of Gastrointestinal Parasites in Small Ruminants Under Extensive Management Systems

CHAPTER ONE 

1.1 Background to the Study

Gastrointestinal parasites are among the most significant health challenges affecting small ruminant production globally. In tropical regions, parasite infestation leads to poor growth, weight loss, anemia, and sometimes death (Fikru et al., 2006). Smallholder farmers who manage animals under extensive systems often experience heavy parasite loads due to poor housing, inadequate veterinary care, and exposure to contaminated pastures (Keyyu et al., 2005).

Understanding the prevalence and distribution of gastrointestinal parasites is essential for effective control and management. According to Kanyari et al. (2009), regular parasitological surveys provide useful information on infection patterns, enabling targeted deworming programs. This study aims to assess the prevalence of gastrointestinal parasites in small ruminants under extensive management systems.

1.2 Statement of the Problem

Parasite infestation remains a major cause of reduced productivity and economic loss among small ruminant farmers. The lack of proper diagnosis and control strategies contributes to recurring infections. Most rural farmers rely on traditional treatment methods, which may be ineffective (Nwosu et al., 2007). Therefore, there is a need for updated data on the prevalence and intensity of gastrointestinal parasites in small ruminants within local communities.

1.3 Objectives of the Study

1. To identify the common gastrointestinal parasites affecting small ruminants under extensive management.

2. To determine the prevalence and intensity of these parasites across different age and sex groups.

3. To assess management practices that influence the rate of infection.

1.4 Research Questions

1. What types of gastrointestinal parasites are common among small ruminants?

2. What is the prevalence rate of these parasites under extensive management systems?

3. Which management factors contribute to parasite infestation?

1.5 Significance of the Study

The findings of this study will help farmers and veterinarians design more effective parasite control programs. It will also contribute to improved animal health, productivity, and food security in smallholder farming systems.

1.6 Scope and Limitation of the Study

The study will be conducted in rural areas where goats and sheep are raised under extensive systems. Laboratory diagnosis will focus on fecal examination to identify parasite eggs. Other parasites such as ectoparasites will not be included.

1.7 Definition of Terms

• Gastrointestinal Parasites: Internal parasites that inhabit the digestive tract of animals.

• Prevalence: The proportion of animals infected within a population at a given time.

• Extensive System: A low-input farming method where animals graze freely on natural pastures.