Estimates of stocking density of female geese in different growth stages

SUMMARY: A high stocking density can have a negatively effect on growth performance, walking ability, and antioxidant capacity of poultry. In geese production, multiple-phase feeding strategy is generally adopted when considering the long raise period for geese. However, the corresponding density pa...

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Autores principales:	J.J. Xue, Z.L. Liu, X.F. Huang, Y. Chen, Z.P. Chen, Q.G. Wang, B.W. Wang, C. Wang
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	geese stocking density growth performance antioxidant capacity Animal culture SF1-1100 Food processing and manufacture TP368-456
Acceso en línea:	https://doaj.org/article/c09d81241321441291a3974a79848ac9
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spelling	oai:doaj.org-article:c09d81241321441291a3974a79848ac92021-11-22T04:19:28ZEstimates of stocking density of female geese in different growth stages1056-617110.1016/j.japr.2021.100215https://doaj.org/article/c09d81241321441291a3974a79848ac92021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1056617121000787https://doaj.org/toc/1056-6171SUMMARY: A high stocking density can have a negatively effect on growth performance, walking ability, and antioxidant capacity of poultry. In geese production, multiple-phase feeding strategy is generally adopted when considering the long raise period for geese. However, the corresponding density parameters are lacking in different growth stages. The aim of this study was to estimate the optimum stocking density of geese from 14 to 28 d of age and 28 to 49 d of age and investigate the effects of stocking density on antioxidant capacity of geese from 28 to 49 d of age. Two trials were used in this study. In experiment 1, a total of 432, 14 d of age female White Sichuan geese were allocated randomly to 6 treatments with 6 replicate pens per treatment according to the stocking densities of 4.67, 6.00, 7.33, 8.67, 10.00, and 11.33 birds/m2, respectively. In experiment 2, a total of 324, 28 d of age female White Sichuan geese were allocated randomly to 6 treatments with 6 replicate pens per treatment according to the stocking densities of 2.50, 3.75, 5.00, 6.25, 7.50, and 8.75 birds/m2, respectively. With the stocking density increasing, body weight and weight gain decreased linearly or quadratically in experiment 1 (P < 0.05), feed intake decreased quadratically (P < 0.05), and feed/gain ratio (F/G) increased (P < 0.05). In experiment 2, as the stocking density increased, the body weight and weight gain decreased linearly (P < 0.05), while F/G increased linearly (P < 0.05). In addition, the increasing stocking density resulted in that the serum total antioxidant capacity (T-AOC) level and activity of superoxide dismutase (SOD) both decreased linearly (P < 0.05). According to linear broken-line regression, the upper critical stocking density of geese from 14 to 28 d of age for weight gain was 6.15 birds/m2 (or 8.34 kg of actually achieved BW/m2) and it was 4.83 birds/m2 (or 11.4 kg of actually achieved BW/m2) for F/G of geese from 28 to 49 d of age.J.J. XueZ.L. LiuX.F. HuangY. ChenZ.P. ChenQ.G. WangB.W. WangC. WangElsevierarticlegeesestocking densitygrowth performanceantioxidant capacityAnimal cultureSF1-1100Food processing and manufactureTP368-456ENJournal of Applied Poultry Research, Vol 30, Iss 4, Pp 100215- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	geese stocking density growth performance antioxidant capacity Animal culture SF1-1100 Food processing and manufacture TP368-456
spellingShingle	geese stocking density growth performance antioxidant capacity Animal culture SF1-1100 Food processing and manufacture TP368-456 J.J. Xue Z.L. Liu X.F. Huang Y. Chen Z.P. Chen Q.G. Wang B.W. Wang C. Wang Estimates of stocking density of female geese in different growth stages
description	SUMMARY: A high stocking density can have a negatively effect on growth performance, walking ability, and antioxidant capacity of poultry. In geese production, multiple-phase feeding strategy is generally adopted when considering the long raise period for geese. However, the corresponding density parameters are lacking in different growth stages. The aim of this study was to estimate the optimum stocking density of geese from 14 to 28 d of age and 28 to 49 d of age and investigate the effects of stocking density on antioxidant capacity of geese from 28 to 49 d of age. Two trials were used in this study. In experiment 1, a total of 432, 14 d of age female White Sichuan geese were allocated randomly to 6 treatments with 6 replicate pens per treatment according to the stocking densities of 4.67, 6.00, 7.33, 8.67, 10.00, and 11.33 birds/m2, respectively. In experiment 2, a total of 324, 28 d of age female White Sichuan geese were allocated randomly to 6 treatments with 6 replicate pens per treatment according to the stocking densities of 2.50, 3.75, 5.00, 6.25, 7.50, and 8.75 birds/m2, respectively. With the stocking density increasing, body weight and weight gain decreased linearly or quadratically in experiment 1 (P < 0.05), feed intake decreased quadratically (P < 0.05), and feed/gain ratio (F/G) increased (P < 0.05). In experiment 2, as the stocking density increased, the body weight and weight gain decreased linearly (P < 0.05), while F/G increased linearly (P < 0.05). In addition, the increasing stocking density resulted in that the serum total antioxidant capacity (T-AOC) level and activity of superoxide dismutase (SOD) both decreased linearly (P < 0.05). According to linear broken-line regression, the upper critical stocking density of geese from 14 to 28 d of age for weight gain was 6.15 birds/m2 (or 8.34 kg of actually achieved BW/m2) and it was 4.83 birds/m2 (or 11.4 kg of actually achieved BW/m2) for F/G of geese from 28 to 49 d of age.
format	article
author	J.J. Xue Z.L. Liu X.F. Huang Y. Chen Z.P. Chen Q.G. Wang B.W. Wang C. Wang
author_facet	J.J. Xue Z.L. Liu X.F. Huang Y. Chen Z.P. Chen Q.G. Wang B.W. Wang C. Wang
author_sort	J.J. Xue
title	Estimates of stocking density of female geese in different growth stages
title_short	Estimates of stocking density of female geese in different growth stages
title_full	Estimates of stocking density of female geese in different growth stages
title_fullStr	Estimates of stocking density of female geese in different growth stages
title_full_unstemmed	Estimates of stocking density of female geese in different growth stages
title_sort	estimates of stocking density of female geese in different growth stages
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/c09d81241321441291a3974a79848ac9
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Estimates of stocking density of female geese in different growth stages

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