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Effect of Increasing Stocking Density on Performance and Heterophil/Lymphocyte Ratios in Broilers

An experiment on space allowance of 0.095, 0.071, 0.057 and 0.048 m2/bird on wire mesh cages was conducted to study their effects on live-weight, feed intake and feed conversion of Orgal broilers from the age of 4 to 10 weeks. Heterophil/lymphocyte (H/L) ratio,an indicator of stress was also studi...

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Main Authors: Kuan, K. K., Adnan, S., Ramlah, H.
Format: Article
Language:English
English
Published: 1990
Online Access:http://psasir.upm.edu.my/id/eprint/2807/1/Effect_of_Increasing_Stocking_Density_on.pdf
http://psasir.upm.edu.my/id/eprint/2807/
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spelling my.upm.eprints.28072013-05-27T07:03:37Z http://psasir.upm.edu.my/id/eprint/2807/ Effect of Increasing Stocking Density on Performance and Heterophil/Lymphocyte Ratios in Broilers Kuan, K. K. Adnan, S. Ramlah, H. An experiment on space allowance of 0.095, 0.071, 0.057 and 0.048 m2/bird on wire mesh cages was conducted to study their effects on live-weight, feed intake and feed conversion of Orgal broilers from the age of 4 to 10 weeks. Heterophil/lymphocyte (H/L) ratio,an indicator of stress was also studied to determine whether over-crowding would effect this ratio. During the first 2 weeks of the experiment increasing stocking is reduced feed intake and improve feed conversion without significantly affecting growth rate. Overall, birds on the most liberal floor space allowance (0.095 m2/bird) had the best growth rate (39.2 glda») but this was achieved at a significantly higher feed intake (127.9 g/day) and poorer feed conversion (3.3).Conversely, birds on the highest stocking density (0.048 ,rz2lbiTd) had the poorest performance in terms of growlh rate (32.2 g/day) and feed intake(90.6 g/day). Birds on the two higher stocking density were constantly under stress as indicated by their relatively high H/L. ratios from the fourth week, of the study onwards, these two treatments also had higher mortalities. The results of the present study showed that stress associated with overcrowding reduced performance in broilers. A space allowance of 0.071 m2/bird is sufficient under om- local conditions for broiled reared in raised floor cages. 1990 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/2807/1/Effect_of_Increasing_Stocking_Density_on.pdf Kuan, K. K. and Adnan, S. and Ramlah, H. (1990) Effect of Increasing Stocking Density on Performance and Heterophil/Lymphocyte Ratios in Broilers. Pertanika, 13 (2). pp. 171-175. English
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
English
description An experiment on space allowance of 0.095, 0.071, 0.057 and 0.048 m2/bird on wire mesh cages was conducted to study their effects on live-weight, feed intake and feed conversion of Orgal broilers from the age of 4 to 10 weeks. Heterophil/lymphocyte (H/L) ratio,an indicator of stress was also studied to determine whether over-crowding would effect this ratio. During the first 2 weeks of the experiment increasing stocking is reduced feed intake and improve feed conversion without significantly affecting growth rate. Overall, birds on the most liberal floor space allowance (0.095 m2/bird) had the best growth rate (39.2 glda») but this was achieved at a significantly higher feed intake (127.9 g/day) and poorer feed conversion (3.3).Conversely, birds on the highest stocking density (0.048 ,rz2lbiTd) had the poorest performance in terms of growlh rate (32.2 g/day) and feed intake(90.6 g/day). Birds on the two higher stocking density were constantly under stress as indicated by their relatively high H/L. ratios from the fourth week, of the study onwards, these two treatments also had higher mortalities. The results of the present study showed that stress associated with overcrowding reduced performance in broilers. A space allowance of 0.071 m2/bird is sufficient under om- local conditions for broiled reared in raised floor cages.
format Article
author Kuan, K. K.
Adnan, S.
Ramlah, H.
spellingShingle Kuan, K. K.
Adnan, S.
Ramlah, H.
Effect of Increasing Stocking Density on Performance and Heterophil/Lymphocyte Ratios in Broilers
author_facet Kuan, K. K.
Adnan, S.
Ramlah, H.
author_sort Kuan, K. K.
title Effect of Increasing Stocking Density on Performance and Heterophil/Lymphocyte Ratios in Broilers
title_short Effect of Increasing Stocking Density on Performance and Heterophil/Lymphocyte Ratios in Broilers
title_full Effect of Increasing Stocking Density on Performance and Heterophil/Lymphocyte Ratios in Broilers
title_fullStr Effect of Increasing Stocking Density on Performance and Heterophil/Lymphocyte Ratios in Broilers
title_full_unstemmed Effect of Increasing Stocking Density on Performance and Heterophil/Lymphocyte Ratios in Broilers
title_sort effect of increasing stocking density on performance and heterophil/lymphocyte ratios in broilers
publishDate 1990
url http://psasir.upm.edu.my/id/eprint/2807/1/Effect_of_Increasing_Stocking_Density_on.pdf
http://psasir.upm.edu.my/id/eprint/2807/
_version_ 1643822427484979200
score 13.211869

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