Estimation of the net energy requirement for maintenance in broilers
| Autor: | Hua Ming Yang, Chang Hua Lin, Hai Jie Yan, Hui Yi Cai, Zheng Ke Wu, Guohua Liu, Liu Wei |
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| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
Broiler Maintenance Energy Requirement Net energy lcsh:Animal biochemistry Body weight Energy requirement Article Feed Intake 03 medical and health sciences Linear regression Evaluation methods Food science lcsh:QP501-801 lcsh:SF1-1100 Mathematics Indirect Calorimetry Method 0402 animal and dairy science Broiler Nonruminant Nutrition and Feed Processing Comparative Slaughter Method 04 agricultural and veterinary sciences 040201 dairy & animal science Heat Production 030104 developmental biology Linear relationship Animal Science and Zoology lcsh:Animal culture Nonlinear regression Food Science |
| Zdroj: | Asian-Australasian Journal of Animal Sciences Asian-Australasian Journal of Animal Sciences, Vol 30, Iss 6, Pp 849-856 (2017) |
| ISSN: | 1976-5517 1011-2367 |
| DOI: | 10.5713/ajas.16.0484 |
| Popis: | Objective The net energy requirement for the maintenance (NEm) of broilers was determined using regression models by the indirect calorimetry method (ICM) or the comparative slaughter method (CSM). Methods A 2×4 factorial arrangement of treatments including the evaluation method (ICM or CSM) and feed intake (25%, 50%, 75%, or 100% of ad libitum recommended) was employed in this experiment. In the ICM, 96 male Arbor Acres (AA) birds aged d 15 were used with 4 birds per replicate and 6 replicates in each treatment. In the CSM, 116 male AA birds aged d 15 were used. Among these 116 birds, 20 were selected as for initial data and 96 were assigned to 4 treatments with 6 replicate cages and 4 birds each. The linear regression between retained energy (RE) and metabolizable energy intake (MEI) or the logarithmic regression between heat production (HP) and MEI were used to calculate the metabolizable or net energy requirement for maintenance (MEm) or NEm, respectively. Results The evaluation method did not detect any differences in the metabolizable energy (ME), net energy (NE), and NE:ME of diet, and in the MEI, HP, and RE of broilers. The MEI, HP, and RE of broilers decreased (p |
| Databáze: | OpenAIRE |
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