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http://dx.doi.org/10.5713/ajas.19.0715

Physicochemical properties and energy content of yellow dent corn from different climatic origins in growing pigs  

Dong, Wenxuan (State Key Laboratory of Animal Nutrition, China Agricultural University)
Li, Juntao (State Key Laboratory of Animal Nutrition, China Agricultural University)
Li, Zhongchao (State Key Laboratory of Animal Nutrition, China Agricultural University)
Zhang, Shuo (Yunnan Xiernan Feed Limited Liability Company)
Li, Xiaozhen (Yunnan Xiernan Feed Limited Liability Company)
Yang, Chundi (Yunnan Xiernan Feed Limited Liability Company)
Liu, Ling (State Key Laboratory of Animal Nutrition, China Agricultural University)
Zhang, Shuai (State Key Laboratory of Animal Nutrition, China Agricultural University)
Publication Information
Asian-Australasian Journal of Animal Sciences / v.33, no.11, 2020 , pp. 1787-1796 More about this Journal
Abstract
Objective: The objective of this study was to determine the digestible energy (DE) and metabolizable energy (ME) of yellow dent corn sourced from different meteorological origins fed to growing pigs and develop equations to predict the DE and ME of yellow dent corn from southwestern China. Methods: Sixty crossbred barrows were allotted to 20 treatments in a triplicate 20×2 incomplete Latin square design with 3 replicated pigs per dietary treatment during 2 consecutive periods. Each period lasted for 12 days, and total feces and urine during the last 5 days of each period were collected to calculate the energy contents. Results: On dry matter (DM) basis, the DE and ME in 20 corn grain samples ranged from 15.38 to 16.78 MJ/kg and from 14.93 to 16.16 MJ/kg, respectively. Selected best-fit prediction equations for DE and ME (MJ/kg DM basis) for yellow dent corn (n = 16) sourced from southwestern China were as follows: DE = 28.58-(0.12×% hemicellulose)+(0.35×% ether extract)-(0.83×MJ/kg gross energy)+(0.20×% crude protein)+(0.49×% ash); ME = 30.42-(0.11×% hemicellulose)+(0.31×% ether extract)-(0.81×MJ/kg gross energy). Conclusion: Our results indicated that the chemical compositions, but not the meteorological conditions or physical characteristics could explain the variation of energy contents in yellow dent corn sourced from southwestern China fed to growing pigs.
Keywords
Digestible Energy; Metabolizable Energy; Meteorological Condition; Growing Pigs; Yellow Dent Corn;
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