کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5792327 1109635 2013 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of low protein diets on pigs with a lean genotype 2. Compositional traits measured with computed tomography (CT)
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش تغذیه
پیش نمایش صفحه اول مقاله
Effects of low protein diets on pigs with a lean genotype 2. Compositional traits measured with computed tomography (CT)
چکیده انگلیسی


- Lowering dietary protein led to more fat and less muscle in growing pigs.
- Partitioning of fat between body depots was unaffected by lowering dietary protein.
- Balancing essential amino acids in low protein diets maintained carcass quality.
- In vivo CT scanning can accurately predict pig carcass tissue weights/ proportions.
- CT-measured muscle density predicts intramuscular fat accurately in live pigs.

The effects on compositional changes across the growing-finishing period (40-115 kg) of feeding pig diets with different protein and amino acid levels were investigated using CT scanning (at 60, 85 and 115 kg live weight). Pigs of a lean commercial genotype were fed a commercial control regime (C), or a low protein regime with either high (LP1) or low (LP2) essential amino acid levels, all balanced for net energy. In vivo CT measurements agreed well with post-slaughter sample joint dissection results for carcass tissue weights/proportions, and CT-measured muscle density predicted intramuscular fat accurately. Pigs on C and LP1 regimes did not differ significantly in composition during growth. However, pigs on the LP2 regime had significantly more fat (in carcass, internal and intra-muscular depots) and less muscle, from 85 kg onwards. Although fat levels differed depending on diet regime (LP2 > others), proportions of fat in different body depots were unaffected.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Meat Science - Volume 95, Issue 1, September 2013, Pages 129-136
نویسندگان
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