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All Journal Buletin Peternakan Jurnal Medik Veteriner
Olarve, Joseph P.
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Biochemistry, Genetics & Molecular Biology Veterinary Other

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Pathogenicity of Clostridium perfringens Philippine Isolate in Necrotic Enteritis Across Broiler Growth Stages Racho, Ma. Rosario S.; Purnamasari, Listya; Olarve, Joseph P.; Rovira, Hope G.; dela Cruz, Joseph Flores
Jurnal Medik Veteriner Vol. 8 No. 1 (2025): April
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jmv.vol8.iss1.2025.124-133

Abstract

Clostridium perfringens was isolated from Philippines broiler chickens of a local farm exhibiting clinical signs of necrotic enteritis. This local isolate induced necrotic enteritis (NE) experimentally in susceptible broiler chickens to demonstrate the disease and the lesions it would produce. Experimental chickens were subjected to stress such as vaccination and pathogenic Escherichia coli and Salmonella enteritidis. Seven treatment groups involving various combinations of the above agents were used to demonstrate lesions of NE. Gross intestinal lesion scoring was performed at necropsy on the 3rd, 7th, 11th, 14th, and 18th-day post-infection, depending on the treatment group. Results showed that the local C. perfringens isolate was able to cause lesions of enteritis but did not demonstrate the classic towel-like lesion of NE, as described by the literature. The treatment combination of C. perfringens and S. enteritidis produced the highest intestinal lesions scores. However, C. perfringens alone can experimentally induce enteritis with a lesser severity. This is the first report of experimental induction of NE in broiler chickens using a local C. perfringens isolate in the Philippines.
Effects of Dietary Plant-Derived Anti-Coccidia on the Production Performance and Oocyst Output of Broiler Chickens Naag, Hazel M.; Purnamasari, Listya; Olarve, Joseph P.; dela Cruz, Joseph Flores
Buletin Peternakan Vol 49, No 2 (2025): BULETIN PETERNAKAN VOL. 49 (2) MAY 2025
Publisher : Faculty of Animal Science, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21059/buletinpeternak.v49i2.101217

Abstract

Adding feed additives to combat coccidiosis, such as anti-coccidial drugs to broiler diets, can lead to side effects, meat residues, and antimicrobial resistance issues. Alternatively, plant-derived anti-coccidia could serve as safe and simple alternatives compared to synthetic/chemical feed additives. The objective of this study was to evaluate the production performance and oocyst output of broilers fed diets with plant-derived anti coccidia. A total of 300 day-old Cobb 500 broiler chicks were randomly assigned in 30 cages in a completely randomized design with 3 treatment groups, 10 replicates per treatment of 10 chicks per cage. The treatment diets were fed for 35 days: basal diet without anti-coccidia (T1), 500ppm synthetic anti-coccidia containing Narasin and Nicarbazin (T2), and 500ppm plant-derived anti-coccidia containing Cinnamomum camphora, Elephatopus scaber, and Valeriana walichii (T3). Results showed significant differences (p<0.05) in the average body weight gain, feed intake, feed efficiency, and income over feed and chick cost among the three treatment groups. Fecal analysis results showed the absence of oocysts in those feeds with synthetic anti-coccidia and plant derived anti-coccidia. T3 that contains plant-derived anti-coccidia has the highest growth performance among other treatments. In conclusion, plant-derived anti coccidia can be used as an alternative anti-coccidial drug without compromising the growth performance of broiler chickens
Co-Authors dela Cruz, Joseph Flores Listya Purnamasari Naag, Hazel M. Racho, Ma. Rosario S. Rovira, Hope G.