Effects of dietary supplementation of guanidino acetic acid on growth performance, thigh meat quality and development of small intestine in Partridge-Shank broilers
| Autor: | X. C. Yan, J. J. Xuan, Ren Qingchang, F. Wang, Z. Z. Hu |
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| Rok vydání: | 2018 |
| Předmět: |
Dose
Feed additive Thigh Biology digestive system 03 medical and health sciences Acetic acid chemistry.chemical_compound Animal science Genetics medicine Dry matter 030304 developmental biology 0303 health sciences digestive oral and skin physiology 0402 animal and dairy science Broiler food and beverages 04 agricultural and veterinary sciences 040201 dairy & animal science Small intestine medicine.anatomical_structure chemistry Chewiness Animal Science and Zoology Agronomy and Crop Science |
| Zdroj: | The Journal of Agricultural Science. 156:1130-1137 |
| ISSN: | 1469-5146 0021-8596 |
| DOI: | 10.1017/s0021859618001156 |
| Popis: | The current experiment aimed at assessing the effects of dietary supplementation of guanidino acetic acid (GAA) on growth performance, thigh meat quality and development of small intestine in broilers. A total of 360 1-day-old female broiler chicks were distributed randomly to four groups of 90 birds each, and each group received GAA dosages of 0, 0.4, 0.8 and 1.2 g/kg of feed dry matter. During the whole experiment of 60 days, broilers hadad libitumaccess to water and feed and the feed intake was recorded daily. All broilers were weighed before and after the experiment, and 30 broilers of each group were selected randomly to slaughter at the end. Increasing dietary supplementation of GAA increased final live weight and daily body weight gain, gain-to-feed ratio, thigh muscle pH value and fibre diameter of broilers, but decreased daily feed intake, drip loss, cooking loss, shear force value, hardness, gumminess and chewiness of thigh meat. In addition, increasing supplementation of GAA quadratically increased duodenal, jejunal and ileal villus height and width and ratio of villus height to crypt depth, but decreased crypt depth. The results indicated that GAA as a feed additive may support better development of small intestine, thereby resulting in improvement of growth performance and meat quality of broilers. |
| Databáze: | OpenAIRE |
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