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Growth performance, nutrient digestibility, metabolizable energy, and intestinal morphology of growing turkeys fed diet supplemented with arginine

Oso, A.O., Williams, G.A., Oluwatosin, O.O., Bamgbose, A.M., Adebayo, A.O., Olowofeso, O., Pirgozliev, V., Adegbenjo, A.A., Osho, S.O., Alabi, J.O., Li, F., Liu, H., Yao, K. and Xin, W. (2017) Growth performance, nutrient digestibility, metabolizable energy, and intestinal morphology of growing turkeys fed diet supplemented with arginine. Livestock Science, 198. pp. 24-30. ISSN 18711413

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Official URL: https://doi.org/10.1016/j.livsci.2017.01.018

Abstract

A 8-wk feeding experiment was conducted to investigate the effect of dietary supplementation with Arg on growth performance, nutrient digestibility, metabolizable energy, and intestinal morphology of growing turkeys. A total of one hundred and eighty 56-d-old male grower turkeys were weighed individually and randomly assigned to 1 of 3 dietary treatments with 6 replicate pens and 10 turkeys per pen in a completely randomized design. Dietary treatments consisted of basal diets supplemented with 0, 0.5, and 1.0 g Arg/kg. Growth response was measured during the grower (d 56–84) and finisher (d 84–112) phases, while nutrient digestibility, metabolizable energy, and intestinal morphology were measured at d 84 and 112. Arginine supplementation had no effect on growth response during the grower phase. During the finisher phase, feed conversion ratio decreased initially as Arg supplementation increased from 0 to 0.5 g/kg, but it increased with the 1.0 g Arg/kg (quadratic, P=0.028). At d 84, grower turkeys fed diets supplemented with 1.0 g Arg/kg had greater (linear, P<0.001) apparent dry matter, crude protein, and ether extract digestibility. At d 84, greatest apparent metabolizable energy, nitrogen corrected apparent metabolizable energy, and true metabolizable energy values were obtained with grower turkeys fed diet supplemented with 0.5 g Arg/kg (quadratic, P<0.001). At d 84, duodenum, and ileum villus height in grower turkeys increased linearly, and quadratically (P<0.001) with increasing Arg supplementation. Dietary supplementation with Arg reduced the apical widths in duodenum (linear, P=0.003; quadratic, P<0.001), jejunum (linear and quadratic, P<0.001), and ileum (linear, P=0.010; quadratic, P=0.004) of grower turkeys. At d 112, jejunum villus height (quadratic, P=0.042), and ileum villus height (linear, P=0.022; quadratic, P=0.042) of finisher turkeys increased, while duodenum apical widths reduced (quadratic, P=0.033) with increasing Arg supplementation. In conclusion, Arg supplementation showed a linear improvement in nutrient digestibility of grower turkeys at d 84, increased nutrient absorption in grower, and finisher turkeys as indicated by increased intestinal villus height at d 84, and 112. Furthermore, dietary supplementation with 0.5 g Arg/kg promoted a quadratic improvement in feed conversion ratio of finisher turkeys, and metabolizable energy values of grower turkeys at d 84.

Item Type: Article
Keywords: Growing turkeys, Gut morphology, Arginine, Metabolizable energy
Divisions: Animal Production, Welfare and Veterinary Sciences
Depositing User: Ms Kath Osborn
Date Deposited: 20 Feb 2017 15:57
Last Modified: 03 Feb 2018 05:10
URI: http://hau.collections.crest.ac.uk/id/eprint/15353

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