China Animal Husbandry and Veterinary Medicine ›› 2022, Vol. 49 ›› Issue (5): 1697-1706.doi: 10.16431/j.cnki.1671-7236.2022.05.011

• Nutrition and Feed • Previous Articles     Next Articles

Study on the Changes of Crude Protein and Mineral Elements in Pigeon Milk at Different Ages

SUN Xiaoshan1,2, LIN Dongmei2, SHAO Yuxin1, WANG Zheng1, HUANG Jianguo1   

  1. 1. Pigeon Breeding Laboratory, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China;
    2. College of Life Science and Food Engineering, Hebei University of Technology, Handan 056038, China
  • Received:2021-11-11 Online:2022-05-05 Published:2022-04-29

Abstract: 【Objective】 This study was aimed to investigate the variation of crude protein and mineral element concentrations of pigeon milk in squabs from 1 to 28 days.【Method】 A total of 36 pairs of parental pigeons were selected,each pair of parental pigeons fed 2 squabs.Pigeon milk samples were collected from squabs on 1,3,5,7,14 and 28 days after hatching,as soon as they were fed by the parental pigeon,the pigeon milk was forced out from the squab crop to mouth immediately.Each treatment had 6 repetitions and 2 squabs per replicate.Squabs were weighed on 1,7,14,21 and 28 days,and the feed intake of breeding pigeons was recorded weekly.【Result】 The body weight of squabs increased linearly and quadratically with age (P<0.05),the body weight of squabs increased within 1-21 d (P<0.05),and then kept stable.The pellet feed and grain intake,and the total feed intake of breeding pigeons increased significantly linearly and quadratically with age (P<0.05),they both increased significantly after 7 d (P<0.05),and remained stable within 15-28 d.The crude protein and mineral element concentrations of pigeon milk had significant differences with age (P<0.05).The content of crude protein decreased linearly and quadratically with age (P<0.05),the crude content of protein maintained stability within 1-5 d,decreased in 7 day (P<0.05),and kept stable in 14-28 d.The content of Ca increased linearly (P<0.05),while the content of P decreased linearly (P<0.05),and Ca/P increased linearly (P<0.05) with age.The contents of Cu,Mn and Zn increased linearly and quadratically with age (P<0.05),and Fe content increased quadratically with age (P<0.05).The contents of Cu,Fe,Mn and Zn maintained stability within 1-3 d.The content of Cu increased at 5 d (P<0.05),then kept stable, and increased significantly at 14 d (P<0.05),and decreased significantly at 28 d (P<0.05).The contents of Fe,Mn and Zn increased at 5 d (P<0.05),and remained unchanged in 5-28 d.However,there was no significant difference in the content of Se (P>0.05).【Conclusion】 The body weight of squabs increased within 1-21 d,and remained stable within 21-28 d.The pellet feed and grain intake,and the total feed intake of breeding pigeons increased with age.The content of crude protein and P in pigeon milk decreased with age,while the contents of Ca,Cu,Fe,Mn and Zn increased with age.

Key words: pigeon milk; mineral elements; crude protein

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