منابع مشابه
Nonprotein nitrogen is absorbed from the large intestine and increases nitrogen balance in growing pigs fed a valine-limiting diet.
Nitrogen absorption from the large intestine, largely as ammonia and possibly as amino acids (AAs), is generally thought to be of little nutritional value to nonruminant animals and humans. Ammonia-nitrogen absorbed from the large intestine, however, may be recycled into the small intestine as urea and incorporated into microbial AAs, which may then be used by the host. A cecal infusion study w...
متن کاملEvaluation of Non- linear Growth Curves Models for Native Slow-growing Khazak Chickens
Native poultry is a valuable genetic source with high resistance against diseases providing an important subject for breeding programs. The non-linear mathematical modeling of the growth pattern may partly explain the relationship between requirements and body weight to precise feeding that plays a vital role in the animal enterprises. A study was conducted to compare five non-linear models inc...
متن کاملThe sequential feeding of growing chickens.
1. Male chickens, I week old, were fed alternately for 6 or 12 h periods with diets complementary in their amino acid composition. The isonitrogenous, isoenergetic diets were based on fish meal or sunflower meal as the sole source of protein, or fish meal-sunflower (40:60, w/w); each diet contained 120 g crude protein/kg. Other groups of chickens were given these diets ad lib. 2. Net protein ut...
متن کاملSupplementation of apple pomace with nonprotein nitrogen for gestating beef cows. II. Skeletal abnormalities of calves.
Skeletal abnormalities consisting of shortened long bones, enlarged joints and splayed front feet in newborn calves were associated with cows fed apple pomace supplemented with nonprotein nitrogen (NPN) during late gestation. Measurements of x-ray films of the metacarpus and lumber vertebrae from 86 calves in three trials showed that calves from dams fed apple pomace and NPN had longer, thicker...
متن کاملSupplementation of apple pomace with nonprotein nitrogen for gestating beef cows. III. Metabolic parameters.
Blood and ruminal samples were analyzed from gestating cows fed apple pomace or corn silage plus isonitrogenous and isocaloric quantities of cottonseed meal or nonprotein nitrogen containing supplements in four trials. Data were also obtained from steers fed similar diets during a metabolism trial. The supplementary sources of nitrogen supplied 50 to 70% of the total nitrogen in the diet. Feedi...
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ژورنال
عنوان ژورنال: Poultry Science
سال: 1975
ISSN: 0032-5791
DOI: 10.3382/ps.0540591