Sexual Dimorphism in Bone Quality and Performance of Conventional Broilers at Different Growth Phases

被引：9
作者：
Muesse, Johanna [1 ,2 ]
Louton, Helen [1 ]
Spindler, Birgit [3 ]
Stracke, Jenny [4 ]
机构：
[1] Univ Rostock, Fac Agr & Environm Sci, Anim Hlth & Anim Welf, Justus von Liebig Weg 6b, D-18059 Rostock, Germany
[2] Chamber Agr Lower Saxony, Dept 3 7, Res Livestock, Mars La Tour Str 6, D-26111 Oldenburg, Germany
[3] Univ Vet Med Hannover, Inst Anim Hyg Anim Welf & Farm Anim Behav, Bischofsholer Damm 15, D-30173 Hannover, Germany
[4] Univ Bonn, Inst Anim Sci, Farm Anim Ethol, Endenicher Allee 15, D-53115 Bonn, Germany
来源：
AGRICULTURE-BASEL | 2022年 / 12卷 / 08期
关键词：
poultry; broiler; sexual dimorphism; carcass; performance; bone strength; CARCASS COMPOSITION; TIBIA; PARAMETERS; CHICKENS; STRENGTH; DENSITY; FEMUR; YIELD; AGE;
D O I：
10.3390/agriculture12081109
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
The objective of this study was to analyze sexual dimorphism with regard to the bone quality of Ross 308 broilers. The relationship between carcass traits, performance and bone quality was analyzed. The effect of sex and age at slaughter was examined in four replicates, always on day 31 and day 38. The weight, length, minimum diameter and breaking strength of the tibiotarsi were measured to determine the bone quality. Female tibiotarsi were shorter, lighter and had a lower minimum diameter and breaking strength compared to male ones. The tibiotarsi of older broilers were found to show higher values in the three-point bending test. The effects on broiler performance were determined by measuring the live body weight, carcass and cut weights. The results demonstrate significant effects of the age at slaughter and the sex (p < 0.001) on all measured parameters, with males always reaching higher values compared to females. A strong correlation of performance and bone parameters could be observed between live weight and weight of the tibiotarsi on both days of data collection. Therefore, it could be beneficial to raise female and male broilers separately. However, in order to make specific recommendations for practice, further knowledge is necessary.
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页数：15
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