Study on Digestion Capacity of Posthatch Pigeon Squabs

ZHANG Xiaoyun, DONG Xinyang, BU Xingchen, QI Mingxing, MIAO Liping, ZHOU Minyao, ZOU Xiaoting

doi:10.3969/j.issn.1006-267x.2016.03.010

Chinese Journal of Animal Nutrition >

2016 , Vol. 28 >Issue 3: 704 - 711

DOI: https://doi.org/10.3969/j.issn.1006-267x.2016.03.010

Poultry Nutrition

Study on Digestion Capacity of Posthatch Pigeon Squabs

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Key laboratory of Animal Nutrition and Feed Science of Agriculture, Feed Science Institute, Zhejiang University, Hangzhou 310058, China

Received date: 2015-09-22

Online published: 2016-03-14

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Abstract

The objectives of the experiment were to investigate the changes of body weight (BW), digestive organ weight, serum protein metabolism indices, digestive enzymes activity of pancreas and intestine mucosa, and to determine the developmental pattern of digestive tract in domestic pigeons (Columbia livia). Thirty squabs (White Carneau) were euthanized by cervical dislocation for samples collection at 2, 4, 6, 8 and 10 days posthatch (six squabs each day). The results showed as follows: 1) day of age had significant effect on postnatal BW (yolk involved), organ weight of proventriculus, gizzard, liver, pancreas, intestine, and contents of total protein, albumin, urea acid, usea nitiogen in serum, and activity of pancreatic amylase, lipase, trypsin, specific activity of lipase, and activity and specific activity of intestinal disaccharidase (maltase and sucrase) as well as phosphatase, respectively (P<0.05). In specific, the increased indicators with age included the relative weight of liver, pancreas, intestine together with the absolute weight of BW, proventriculus, gizzard, pancreas, liver, intestine (P<0.01), and contents of total protein, albumin in serum (P<0.01), and the activities of pancreatic amylase, lipase, trypsin followed with the specific activity of lipase (P<0.05), and activity and specific activity of intestinal disaccharidase (maltase and sucrase) as well as phosphatase (P<0.01). Contents of urea acid, urea nitrogen in serum and specific activity of trypsin declined linearly with day of age (P<0.05). Whereas the relative weight of proventriculus and gizzard went up, then dropped (P<0.05). 2) Segment had significant effect on activity of maltase and sucrose of squabs (P<0.05). 3) Interaction between day of age and segment had significant effect on activity of maltase and sucrose and specific activity of sucrose (P<0.05). It is concluded that the developmental capacity of protein metabolism, digestive system, pancreatic and intestinal enzyme activity elevated significantly improved with days of age. Hence, it is a vital stage of 2 to 10 days of age posthatch to promote the digestion capacity for squabs.

Key words： squab; protein metabolism; digestive enzyme; gastrointestinal tract development

Cite this article

ZHANG Xiaoyun, DONG Xinyang, BU Xingchen, QI Mingxing, MIAO Liping, ZHOU Minyao, ZOU Xiaoting . Study on Digestion Capacity of Posthatch Pigeon Squabs[J]. Chinese Journal of Animal Nutrition, 2016 , 28(3) : 704 -711 . DOI: 10.3969/j.issn.1006-267x.2016.03.010

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