Effect of phased reduction of dietary digestible lysine density on growth performance, thigh meat, and biomechanical characteristics of tibia in broiler chickens.

Autor: Ahsan U; Department of Plant and Animal Production, Burdur Vocational School of Food, Agriculture and Livestock, Burdur Mehmet Akif Ersoy University, Burdur, 15030, Turkey. uahsan@mehmetakif.edu.tr.; Center for Agriculture, Livestock and Food Research, Burdur Mehmet Akif Ersoy University, Burdur, 15030, Turkey. uahsan@mehmetakif.edu.tr., Kuter E; Department of Animal Nutrition and Nutritional Diseases, Faculty of Veterinary Medicine, Burdur Mehmet Akif Ersoy University, Burdur, 15030, Turkey., Khan K; Department of Biosciences, University of Veterinary and Animal Sciences, Lahore, Jhang Campus, Jhang, 35200, Pakistan., Raza I; Department of Animal Nutrition and Nutritional Diseases, Faculty of Veterinary Medicine, Aydın Adnan Menderes University, Işıklı, Aydın, 09016, Turkey., Çalık A; Department of Animal Nutrition and Nutritional Diseases, Faculty of Veterinary Medicine, Ankara University, Dışkapı, Ankara, 06110, Turkey., Şahiner HS; Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Aydın Adnan Menderes University, Işıklı, Aydın, 09016, Turkey., Cengiz Ö; Department of Animal Nutrition and Nutritional Diseases, Faculty of Veterinary Medicine, Aydın Adnan Menderes University, Işıklı, Aydın, 09016, Turkey.
Jazyk: angličtina
Zdroj: Tropical animal health and production [Trop Anim Health Prod] 2023 Jun 23; Vol. 55 (4), pp. 248. Date of Electronic Publication: 2023 Jun 23.
DOI: 10.1007/s11250-023-03660-x
Abstrakt: In this study, growth performance, nutrient intake, thigh meat quality, fatty acid composition of thigh meat, and biomechanical characteristics of tibia of broiler chickens in response to phased restriction of dietary digestible lysine (dLys) were evaluated. A total of 180 male broiler chickens distributed to 3 experimental groups were fed control diets, 85% dLys diet in grower phase (GRO 85% dLys), or 85% dLys diets in grower and finisher phases (GRO-FIN 85% dLys). Feeding 85% dLys suppressed the feed intake that suppressed the growth performance, slaughter weight, and thigh weight of broiler chickens compared to control group (P < 0.05). Average daily dLys, Ca, and P intakes were suppressed in groups fed 85% dLys diets in comparison with control group (P < 0.05) due to the suppression of feed intake. While most fatty acid concentrations in thigh meat were not different among the groups, eicosanoic acid (C20:0) in thigh meat was greater in GRO-FIN 85% dLys group than control group (P = 0.002). Antioxidant status of thigh meat of broiler chickens was not affected by the phased restriction of dietary dLys compared to control group. Bone breaking strength and ultimate strength were greater in control group than 85% dLys groups (P < 0.05). In conclusion, phased dilution of dietary dLys to 85% of the required allowance yields weaker legs and tibia bones by suppressing the Ca and P intakes as a function of reduced feed intake in broiler chickens.
(© 2023. The Author(s), under exclusive licence to Springer Nature B.V.)
Databáze: MEDLINE
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