Requirement of Non-Phytate Phosphorus in 1- to 28-Day-Old Geese Based on Growth Performance, Serum Variables, and Bone Characteristics

Ning Li, Yuanjing Chen, Lei Xu, Guoqiang Su, Zhiyue Wang and Haiming Yang
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Ning Li: College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
Yuanjing Chen: College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
Lei Xu: College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
Guoqiang Su: College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
Zhiyue Wang: College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
Haiming Yang: College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China

Agriculture, 2022, vol. 12, issue 4, 1-13

Abstract: The standard of dietary non-phytate phosphorus (NPP) requirement is important for geese production. However, limited reports remain an obstacle to the NPP requirement of geese. We aimed to evaluate the NPP requirement in geese based on the effects of NPP levels on growth performance, serum variables, and bone characteristics in 1–28-day-old geese. One-day-old male Jiangnan White Geese ( n = 360) were randomly divided into five groups. Five corn-soybean diets were used in these groups, with NPP levels at 0.18%, 0.28%, 0.39%, 0.47%, 0.59% in the feed, respectively. The average body weight, serum phosphorus (P) content, tibia strength, tibia P content, and femoral skim weight were significantly reduced, by 0.18%, compared with 0.28–0.59%. These variables had significant linear fit ( p < 0.001) between the levels of 0.18% and 0.58%. The estimated requirement of NPP for goslings is between 0.28% and 0.35%, based on the broken-line model, using the above indicators. In conclusion, the dietary NPP requirement for 1–28-day-old geese should be no less than 0.35% to ensure normal growth performance and bone development, based on body weight gain, serum P content, and skeletal variables.

Keywords: goslings; non-phytate phosphorus requirement; growth performance; bone mineralization; serum (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2022
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