Parasites present a significant challenge in managing non-ruminant livestock such as pigs and poultry in Kenya. Effective control and management of parasites are crucial to safeguarding animal health, improving productivity, and ensuring food security for farmers and agribusinesses. This chapter focuses on understanding non-ruminant parasites, their types, and how to recognize their presence through clinical signs and symptoms, enabling extension professionals to advise farmers accurately.

3.1 Non-ruminant parasites

Non-ruminant animals, including pigs and poultry, are susceptible to various parasites that affect their health and productivity. Understanding the nature of these parasites and their classification helps in designing appropriate control strategies. In Kenya, where smallholder farmers form the backbone of livestock production, knowledge of these parasites enhances extension services and promotes sustainable animal husbandry.

3.1.1 Definition of terms

To effectively manage parasites in non-ruminants, it is essential to understand the terminology used in parasitology. These terms clarify the nature and behavior of parasites, facilitating communication among professionals and farmers.

Parasite

A parasite is an organism that lives on or inside another living organism, called the host, deriving nutrients at the host’s expense. For example, in poultry farms around Kisumu, lice infest chickens by feeding on their blood and skin, weakening the birds.

Host

The host is the organism that harbors the parasite, providing it with nourishment and shelter. Pigs on farms in Kiambu serve as hosts for various parasites such as roundworms, which impair growth and cause disease.

Infestation and Infection

Infestation refers to the presence of parasites on the external surface of the host, such as lice on poultry feathers. Infection denotes the invasion and multiplication of parasites inside the host’s body, like internal worms in pigs’ intestines.

Significance of Infestation and Infection

Understanding the impact of infestation and infection is crucial for effective parasite management in non-ruminant animals. Infestation by external parasites such as lice can lead to visible discomfort, reduced productivity, and increased susceptibility to secondary infections, as seen in poultry farms in Kakamega. Infection by internal parasites, like roundworms in pigs, can cause poor nutrient absorption, stunted growth, and higher mortality rates, which directly affect the profitability and sustainability of farms in regions such as Nyeri.

Ectoparasite and Endoparasite

Ectoparasites live on the surface of the host, including ticks and mites common in Kenyan poultry and pig farms. Endoparasites inhabit internal organs or tissues, such as liver flukes in pigs, causing severe internal damage.

Life Cycle

The life cycle of a parasite encompasses all stages from egg to adult, often involving different hosts or environments. Understanding life cycles, for example, of the pig roundworm Ascaris suum, aids in interrupting transmission and controlling infestations.

3.1.2 Types of non-ruminant parasites

Non-ruminant animals are affected by a broad range of parasites that vary in their biology and mode of interaction with the host. Categorizing these parasites helps extension officers recommend targeted control measures.

Protozoan Parasites

Protozoa are single-celled organisms causing diseases such as coccidiosis in poultry, which leads to diarrhea and poor growth. In county government farms in Nakuru, outbreaks of coccidiosis reduce flock performance and increase mortality.

Helminths (Worms)

Helminths are multicellular worms including nematodes (roundworms), cestodes (tapeworms), and trematodes (flukes). For instance, Ascaris suum, a common roundworm in pigs, causes intestinal blockage and poor feed conversion in farms around Eldoret.

Ectoparasites

Ectoparasites like mites, ticks, lice, and fleas infest the skin and feathers of non-ruminants. In Nairobi’s peri-urban poultry farms, heavy mite infestations cause skin irritation, anemia, and reduced egg production.

Endoparasites

These parasites live inside the host’s body, such as liver flukes in pigs that damage liver tissue, leading to reduced weight gain and increased susceptibility to other diseases.

Parasitic Arthropods

Some arthropods, like ticks, not only cause direct harm but also transmit other diseases to non-ruminants. For example, ticks in pig farms in Meru can transmit swine fever virus, complicating parasite management.

Chapter Summary

This chapter introduced the concept of non-ruminant parasites by defining key terms and distinguishing between internal and external parasites that affect animals such as pigs and poultry. It outlined the common signs and symptoms that indicate parasitic infestations in non-ruminant animals, highlighting the importance of early detection. Various parasite control measures were discussed, including deworming, spraying, dipping, dusting, vaccination, and fumigation, each tailored to target specific parasites effectively. The preparation and maintenance of detailed parasite control records were emphasized as essential for monitoring treatment schedules and outcomes. Proper management of parasite control waste was covered to prevent environmental contamination and ensure safety. The chapter also detailed practical procedures for identifying external parasites and implementing control methods using appropriate techniques. Finally, it stressed the importance of managing waste generated from parasite control activities to maintain hygiene and protect animal health.