Most of amino acid (AA) digestibility values for feed ingredients are obtained using pigs cannulated in the distal ileum. The ileal-cannulated pig model uses pigs older than six weeks due to difficulties related to implanting the T-cannula in distal ileum of younger pigs and complications during the post-surgical recovery. However, to properly formulate the diet of weaned pigs, the nutritive va...

an experiment was conducted to determine apparent ileal digestibility of crude protein (cp) and amino acids (aa) and digestible cp and aa of fish meal (fm) in 21-d-old broiler chickens using the regression technique. four diets containing 0, 1, 2, and 3% fm in place of cornstarch were formulated with fm as the sole contributor of cp and aas in the sequential diets. eighty 14-d-old broiler chick...

Two identical trials were conducted to determine the relationship of a novel digestive enzyme assay, Poultry Complete IDEA (PC IDEA), and the pepsin digestibility assay with standardized ileal amino acid digestibility (SIAAD) of 20 animal protein meals (APM) fed to broilers from 25 to 30 d of age. Animal protein meals included 10 meat and bone meals (MBM) consisting of bovine, porcine, or mixed...

The objective of this experiment was to determine the effect of a beta-glucanase-protease enzyme blend product (EBP) on fecal digestibility (FD), apparent ileal digestibility (AID), standardized ileal digestibility, and digestibility in the hindgut of growing pigs. Twelve ileal-cannulated, growing barrows (38.2 +/- 0.5 kg) were housed in individual metabolism crates, blocked by previous feed in...

Effects of oxidative browning inhibitors on sweet potato protein (SPP) recovery and quality were studied. Oxidative browning inhibitors successfully decreased sweet potato oxidative browning, but reduced both SPP extractability and recovery. Ultrafiltration/diafiltration processed sweet potato (UDSP) protein (at pH 4, 6 and 7) showed significantly (p<0.05) higher yield, purity, solubility, ther...

There is only little information how the age of chicks and the microbial activity in the hind gut of young broilers can affect the digestibility coefficients of amino acids. Ross 308 broilers were kept in battery cages and fed an experimental diet containing N-free components, soybean meal as the only protein source and TiO2 as a marker. Digestibility trials were carried out weekly from the 2 t...

I. In the wild, red grouse live largely on heather, a high-fibre (25 :(,), low-protein (7 %) food. Digestibility trials were carried out under semi-natural conditions, with magnesium as a digestibility marker. T w o trials w-ere done, one in autumn and one in spring. 2. Digestibility of the dry matter varied from 21 to 30 ”/o and metabolizable energy from 1.1 to 1.6 kcal/g. Thcse variations wer...

Sixteen meat and bone meal (MBM) samples were obtained and selected from various company plants to provide a wide range in pepsin nitrogen digestibility values. Pepsin digestibility was determined using either 0.02 or 0.002% pepsin. Amino acid (AA) digestibility of the 16 MBM samples was then determined using a precision-fed cecectomized rooster assay. The 0.02% pepsin digestibility values were...

The relationship between the nature of in vitro digestion products and protein quality evaluation in rats was established. Eleven protein sources of animal and vegetable origin and of various purities were digested by pepsin then by pancreatin in a dialysis bag of 1,000 molecular weight cutoff. Animal proteins were generally better digested in vitro than vegetable proteins. Amino acid release p...