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Effects of dietary protein under high ambient temperature on body weight, breast meat yield, and abdominal fat deposition of broiler stocks differing in growth rate and fatness.
Year:
1995
Source of publication :
Poultry Science
Authors :
Nitsan, Zafrira
;
.
Volume :
74
Co-Authors:
Cahaner, A., Department of Genetics, Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot, Israel.
Pinchasov, Y., Department of Genetics, Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot, Israel.
Nir, I., Department of Genetics, Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot, Israel.
Nitsan, Z., Department of Genetics, Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot, Israel.
Facilitators :
From page:
968
To page:
975
(
Total pages:
8
)
Abstract:
The effect of dietary protein on growth, feed intake and efficiency, abdominal fat deposition, and breast meat yield was investigated in broiler males from a commercial stock (WI) and from experimental stocks selected for low (LF) or high (HF) abdominal fat. All birds were kept at constant high ambient temperature (32 C) and were provided with low- (LP) or high-protein (HP) diets from hatch until 8 wk of age (Experiment 1) or from 4 to 8 wk of age (Experiment 2). In both experiments, HP diet significantly increased 4- to 8-wk BW gain in the LF and HF stocks but reduced it in the WI stock as compared with the LP diet. Abdominal fat, as percentage of BW, was almost twofold higher in the HF birds than in the LF ones, with WI mean being intermediate. In contrast to the HF and WI birds, in which abdominal fat decreased with increased protein intake, abdominal fat was not affected by dietary protein in the LF stock. The HP diet substantially increased breast meat yield in LF birds but not in the WI birds, with HF birds exhibiting intermediate increase in breast meat weight. It was concluded that birds of varied inherent growth rate and tendencies toward protein and fat deposition respond differently to dietary protein level under heat stress.
Note:
Related Files :
adipose tissue
Animal
Female
Genetics
Growth, Development and Aging
Male
meat
temperature
Show More
Related Content
More details
DOI :
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
30763
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:57
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Scientific Publication
Effects of dietary protein under high ambient temperature on body weight, breast meat yield, and abdominal fat deposition of broiler stocks differing in growth rate and fatness.
74
Cahaner, A., Department of Genetics, Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot, Israel.
Pinchasov, Y., Department of Genetics, Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot, Israel.
Nir, I., Department of Genetics, Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot, Israel.
Nitsan, Z., Department of Genetics, Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot, Israel.
Effects of dietary protein under high ambient temperature on body weight, breast meat yield, and abdominal fat deposition of broiler stocks differing in growth rate and fatness.
The effect of dietary protein on growth, feed intake and efficiency, abdominal fat deposition, and breast meat yield was investigated in broiler males from a commercial stock (WI) and from experimental stocks selected for low (LF) or high (HF) abdominal fat. All birds were kept at constant high ambient temperature (32 C) and were provided with low- (LP) or high-protein (HP) diets from hatch until 8 wk of age (Experiment 1) or from 4 to 8 wk of age (Experiment 2). In both experiments, HP diet significantly increased 4- to 8-wk BW gain in the LF and HF stocks but reduced it in the WI stock as compared with the LP diet. Abdominal fat, as percentage of BW, was almost twofold higher in the HF birds than in the LF ones, with WI mean being intermediate. In contrast to the HF and WI birds, in which abdominal fat decreased with increased protein intake, abdominal fat was not affected by dietary protein in the LF stock. The HP diet substantially increased breast meat yield in LF birds but not in the WI birds, with HF birds exhibiting intermediate increase in breast meat weight. It was concluded that birds of varied inherent growth rate and tendencies toward protein and fat deposition respond differently to dietary protein level under heat stress.
Scientific Publication
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