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Performance and digestive organ profile of Wandering Whistling Duck fed different protein levels

*J. Jamilah orcid scopus  -  Department of Animal Science, Faculty of Animal and Agricultural Sciences, Universitas Diponegoro, Indonesia
L. D. Mahfudz orcid  -  Department of Animal Science, Faculty of Animal and Agricultural Sciences, Universitas Diponegoro, Indonesia
E. Suprijatna orcid  -  Department of Animal Science, Faculty of Animal and Agricultural Sciences, Universitas Diponegoro, Indonesia
H. I. Wahyuni  -  Department of Animal Science, Faculty of Animal and Agricultural Sciences, Universitas Diponegoro, Indonesia
S. Sugiharto  -  Department of Animal Science, Faculty of Animal and Agricultural Sciences, Universitas Diponegoro, Indonesia
Open Access Copyright (c) 2025 Journal of the Indonesian Tropical Animal Agriculture
Creative Commons License This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

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Abstract

This study investigated the effects of different dietary protein levels on the performance and diges-tive tract profile of Wandering Whistling Ducks. A total of 108 5-month-old Wandering Whistling Ducks were reared intensively for three months (one-month rearing and feed adaptation period fol-lowed by two months of dietary intervention). The dietary treatments comprised of three protein levels: T1 12%, T2 15%, and T3 18%. Each treatment consisted of nine replications, with each experimental unit consisted of four Wandering Whistling Ducks. The parameters measured in this study were feed consumption, water consumption, feed-to-water ratio, body weight gain, relative weight and length of digestive organ, villus height, crypt depth, villus-to-crypt ratio, histopathological features, digestive tract pH, and ileal bacteria counts. The data were analyzed using analysis of variance followed by Dun-can’s multiple range test. The results indicated that dietary protein levels significantly affected feed consumption, body weight gain, ileal crypt depth, cecal lactic acid bacteria, and gizzard pH. Other pa-rameters showed no significant response to different protein levels. Based on these findings, it was concluded that a dietary protein level of 18% yielded the most favourable outcomes in terms of growth performance and the digestive tract profile of Wandering Whistling Ducks.

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Keywords: Dietary protein; Digestive organ; Intestinal histology; Performance; Waterfowls
Funding: Beasiswa Pendidikan Indonesia under contract 202101121554

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