scholarly journals The Phosphorus Needs of Finishing Broilers in Relationship to Dietary Nutrient Density Levels

1974 ◽  
Vol 53 (5) ◽  
pp. 1655-1663 ◽  
Author(s):  
P.W. Waldroup ◽  
R.J. Mitchell ◽  
K.R. Hazen
Keyword(s):  
Nutrient Density ◽  
Dietary Nutrient

Effect of dietary nutrient density and vitamin premix withdrawal on performance and meat quality of broiler chickens

2013 ◽  
Vol 93 (12) ◽  
pp. 2979-2985 ◽  
Author(s):  
Reza Mirshekar ◽  
Behrouz Dastar ◽  
Bahareh Shabanpour ◽  
Saeed Hassani
Keyword(s):  
Meat Quality ◽  
Broiler Chickens ◽  
Nutrient Density ◽  
Dietary Nutrient

scholarly journals Digestive Ability, Physiological Characteristics, and Rumen Bacterial Community of Holstein Finishing Steers in Response to Three Nutrient Density Diets as Fattening Phases Advanced

2020 ◽  
Vol 8 (3) ◽  
pp. 335 ◽  
Author(s):  
Qinghua Qiu ◽  
Chaoyu Gao ◽  
Muhammad Aziz ur Rahman ◽  
Binghai Cao ◽  
Huawei Su
Keyword(s):  
Bacterial Community ◽  
Ambient Temperature ◽  
Alanine Aminotransferase ◽  
Nutrient Intake ◽  
Rumen Fermentation ◽  
Nutrient Density ◽  
Nutrient Digestion ◽  
Finishing Steers ◽  
Dietary Nutrient ◽  
Bacterial Richness

The aim of this study is to track the dynamic alterations in nutrient intake and digestion, rumen fermentation and plasma metabolic characteristics, and rumen bacterial community of Holstein finishing steers in response to three nutrient density diets as fattening phases advanced. A total of eighteen Holstein steers were randomly allocated into three nutrient density groups and steers in each group were fed under a three-phase fattening strategy, with nutrient density increased in each group when fattening phase advanced. Results showed that both fattening phase and dietary nutrient density significantly influenced the nutrient digestion, most of the rumen fermentation parameters, and part of bacteria at phylum and genus levels. Individually, dietary nutrient density affected the concentrations of plasma alanine aminotransferase and urea N, bacterial richness and evenness. All determined nutrient intake and plasma biochemical parameters, except for alanine aminotransferase and triglyceride, differed among fattening phases. Spearman correlation analysis revealed strong correlations between fiber intake and bacterial richness and evenness, rumen fermentation characteristics and certain bacteria. Moreover, Patescibacteria abundance was positively correlated with ambient temperature and plasma total protein. These results indicate that rumen fermentation and nutrient digestion were influenced by both dietary nutrient density and fattening phase, and these influences were regulated by certain rumen bacterial community and ruminal bacteria may be affected simultaneously by ambient temperature. This study may provide insights into diet optimization and potentially adaptive mechanism of rumen bacterial community in response to fattening phases and gradually climatic change.

The effect of dietary nutrient density on growth in the pig

1977 ◽  
Vol 25 (3) ◽  
pp. 261-269 ◽  
Author(s):  
T. L. J. Lawrence
Keyword(s):  
Crude Protein ◽  
Live Weight ◽  
The Other ◽  
Fatty Tissue ◽  
Lean Tissue ◽  
Large White ◽  
Digestible Energy ◽  
Nutrient Density ◽  
Dietary Nutrient ◽  
The One

SUMMARYForty-eight Large White ♂× (Landrace × Large White) ♀ male castrate pigs were individually fed, on a live-weight-based scale between approximately 23 kg and 88 kg live weight, similar daily in-takes of digestible energy, crude protein and total lysine from four diets (12 pigs per diet) of widely differing compositions and nutrient densities. The digestible energy contents (MJ/kg) (1), crude protein (%) (2) and total lysine (%) (3) contents of the diets were: diet A (1) 11·40, (2) 14·40, (3) 0·82; diet B (1) 12·90, (2) 16·50, (3) 0·94; diet C (1) 14·96, (2) 19·20, (3) 1·09 and diet D (1) 18·28, (2) 23·30, (3) 1·32. To give the required daily nutrient intakes, relative to diet A (100) the intakes of diets B, C and D were 87·5, 75·0 and 62·5 respectively. Growth rates, carcass weights (from dissimilar but non-significantly different slaughter weights), killing-out percentages and the digestible energy required to produce a unit of carcass improved progressively from diet A to diet D. In these variables the significant differences tended to lie between diets A and B on the one hand compared with diets C and D on the other. The weights of lean tissue dissected from the carcass were similar for all pigs. The weights of dissected fatty tissue and backfat thicknesses increased from diet B to C to D but only the differences between diets B and D were statistically significant.

scholarly journals Live performance, carcass composition, and blood metabolite responses to dietary nutrient density in two distinct broiler breeds of male chickens

2009 ◽  
Vol 88 (12) ◽  
pp. 2575-2584 ◽  
Author(s):  
J.P. Zhao ◽  
J.L. Chen ◽  
G.P. Zhao ◽  
M.Q. Zheng ◽  
R.R. Jiang ◽  
...  
Keyword(s):  
Carcass Composition ◽  
Live Performance ◽  
Nutrient Density ◽  
Blood Metabolite ◽  
Dietary Nutrient

scholarly journals Effects of Abrupt and Multiple Changes in Dietary Nutrient Density on Performance of Broilers

1993 ◽  
Vol 2 (1) ◽  
pp. 33-39 ◽  
Author(s):  
J.T. Skinner ◽  
M.C. Cabel ◽  
A.L. Waldroup ◽  
P.W. Waldroup
Keyword(s):  
Nutrient Density ◽  
Dietary Nutrient
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