The Effects of Dietary Crude Protein Levels on Nutrient Digestibility, Nitrogen Retention, Rumen Environment and Microbial Nitrogen Synthesis of Growing Female Bach Thao Goats in Vietnam

2017 ◽  
Vol 3 (3) ◽  
pp. 30-36
Author(s):  
Nguyen Van Thu
Keyword(s):  
Crude Protein ◽  
Nitrogen Retention ◽  
Nutrient Digestibility ◽  
Protein Levels ◽  
Dietary Crude Protein ◽  
Microbial Nitrogen

scholarly journals NITROGEN UTILIZATION BY PREGNANT YANKASA SHEEP

2021 ◽  
Vol 7 (2) ◽  
pp. 122-126
Author(s):  
I. F. Adu ◽  
C. A. M. Lakpini
Keyword(s):  
Crude Protein ◽  
Nitrogen Retention ◽  
Nitrogen Utilization ◽  
Metabolizable Energy ◽  
Energy Concentration ◽  
Curvilinear Relationship ◽  
Treatment Groups ◽  
Protein Levels ◽  
Dietary Crude Protein ◽  
Balance Trials

Series of Nitrogen – balance trials were conducted during the last 6 weeks of gestation using nine adult Yankasa ewes aged about 242 years. The animals were fed a basal Digitaria smutsii hay diet supplemented with compounded concentrate ration ted at three levels of crude protein, viz 8.4, 15.6 and 19.1%. The estimated metabolizable energy concentration in the rations averaged 3.2 MJ/kg DM. Mean daily liveweight gains during the last third of pregnancy which were 125.7, 165.7 and 214.3g for the three treatment groups respectively were significantly (P< 0.05) affected by the level of crude protein fed. Nitrogen retention increased with dietary crude protein levels. There was a curvilinear relationship between N-intake and N-balance per unit of metabolic weight. The results showed that Yankasa ewes required 1.5g DCP/day/W0.75kg for maintenance and 7.48g DCP/day/Wkg0.75 for pregnancy.

scholarly journals Impact of Microbial Protease Enzyme and Dietary Crude Protein Levels on Growth and Nutrients Digestibility in Broilers over 15–28 Days

Animals ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 2499
Author(s):  
Abdul Jabbar ◽  
Muhammad Tahir ◽  
Ibrahim A. Alhidary ◽  
Mutassim A. Abdelrahman ◽  
Hani Albadani ◽  
...  
Keyword(s):  
Crude Protein ◽  
Body Weight Gain ◽  
Nutrient Digestibility ◽  
Conversion Ratio ◽  
Feed Conversion ◽  
Protein Levels ◽  
Dietary Crude Protein ◽  
Protease Enzyme ◽  
Microbial Protease ◽  
Gross Energy

In this trial, a 3 × 2 factorial design with different dietary crude protein levels (CP, 17, 19 and 21%) and two levels of exogenous protease (0 and 30,000 IU/kg) was used. A total of 540 two-week old broilers (Ross-308) was randomly allocated to experimental diets over 15–28 days of age. The interaction between dietary protein levels and enzyme supplementation showed that body weight gain was significantly (p < 0.05) higher in birds fed CP-19 (1114.7 g) and CP-21 (1108.8 g) with enzymes supplementation. Feed intake was higher (p < 0.05) in broilers fed with CP-17 than CP-19 with supplementation of the protease enzyme. Results also revealed that the feed conversion ratio (FCR) was significantly (p < 0.05) improved in birds fed with CP-19 and CP-21 and protease supplementation. Total tract N retention was lower (p < 0.05) in birds fed CP-17 with no enzyme than the other dietary groups. Similarly, the gross energy (GE) was significantly (p < 0.05) lower in birds fed CP-17 with or without the protease enzyme. Abdominal fat was higher (p < 0.05) in CP-17 (0.96%) without the protease enzyme. It was concluded that a diet at 19% CP with the protease enzyme improved the performance and nutrient digestibility in broilers over 15–28 days.

Effects of Food Protein Levels on Haematological Parameters of Growing Japanese Quails (Coturnix Coturnix Japonica Temminck & Schlegel, 1849)

2020 ◽  
Vol 6 (6) ◽  
pp. 94-100
Author(s):  
Serge-Olivier Konan KOUASSI ◽  
◽  
Yves Bénarèce Tra DJE BI ◽  
Soualio KAMAGATE ◽  
Mathieu Nahounou BLEYERE ◽  
...  
Keyword(s):  
Crude Protein ◽  
Hematological Parameters ◽  
Coturnix Japonica ◽  
Food Protein ◽  
Coturnix Coturnix Japonica ◽  
Coturnix Coturnix ◽  
Protein Levels ◽  
Dietary Crude Protein ◽  
Japanese Quails ◽  
The Impact

The study aims to determine the impact of dietary crude protein levels on the hematological parameters of Japanese quail from growth to ovipositor. To this end, five feeds with different crude protein levels (18, 20, 22, 24 and 26%) were supplied to 700 quails of three weeks of age. These were subdivided into six batches, including three batches of females and three batches of males for each feed group. After subjecting the quails to diets containing the different protein levels, four samples were taken at the fourth, fifth, sixth and seventh week of age. The samples taken were analyzed using an SYSMEX XN 350 automated hematological analyzer. The results of this investigation indicated that non-significant differences (P > 0.05) were observed in hematological parameters in both female and male quails. This study showed that dietary crude protein levels had no impact on the health status of Japanese quails. Keywords: Japanese quails, Crude protein, Hematological parameters.

scholarly journals Effect of dietary crude protein and energy content on nitrogen utilisation, water intake and urinary output in growing pigs

1998 ◽  
Vol 7 (3) ◽  
pp. 381-390 ◽  
Author(s):  
Jarmo Valaja ◽  
Hilkka Siljander-Rasi
Keyword(s):  
Water Intake ◽  
Crude Protein ◽  
Energy Content ◽  
Live Weight ◽  
Nutrient Digestibility ◽  
Growing Pigs ◽  
Urinary Output ◽  
Net Energy ◽  
Mean Values ◽  
Dietary Crude Protein

A digestibility and balance trial was carried out with four intact castrated male pigs (live weight 33-82 kg) to study the effects of dietary crude protein and energy content on nutrient digestibility, nitrogen metabolism, water intake and urinary output. In a 4 x 4 Latin square design, four barley-oats-soya bean meal based diets were arranged 2x2 factorially. The corresponding factors were dietary crude protein (CP) content: high (180 g/kg CP) or low protein diet (140 g/kg CP) supplemented with free lysine, methionine and threonine; and dietary net energy content; high (1.05 feed units (FU)/kg) (feed unit=9.3 MJ net energy) or low net energy content (0.95 FU/kg). Lowering dietary CP content (mean values of 189 to 152 g/kg dry matter, respectively) by supplementation of free amino acids decreased urinary nitrogen (N) excretion by 6.9 g/day (32%) (P

scholarly journals Apparent digestibility of juveniles of matrinxã Brycon amazonicus fed diets with different protein levels

2021 ◽  
Vol 43 ◽  
pp. e52236
Author(s):  
Cesar Augusto Alves Gonçalves ◽  
Jackson Pantoja-Lima ◽  
Márcia Regina Fragoso Machado-Bussons ◽  
João Paulo Ferreira Rufino
Keyword(s):  
Crude Protein ◽  
Polynomial Regression ◽  
Analysis Data ◽  
Nutrient Digestibility ◽  
Apparent Digestibility ◽  
Protein Ratio ◽  
Digestible Energy ◽  
Protein Levels ◽  
Dry Matter Digestibility ◽  
Four Levels

The objective of the present study was to determine the apparent digestibility of juveniles of matrinxã Brycon amazonicus fed diets with different levels of protein. The experimental design was completely randomized, where the treatments consisted of four levels of protein in the diets (28, 32, 36 and 40%) and five replicates (water boxes) with 10 juveniles of matrinxã each. Diets were offered four times a day, and feces were collected twice a week, along 28 days, for digestibility analysis. Data collected were subjected to polynomial regression at 5% significance. Differences (p<0.05) were observed in dry matter digestibility, with higher digestibility according to increasing levels of protein in the diets. This behavior was directly expressed in the digestibility of nutrients by juveniles of matrinxã, such as % ash, % crude protein, apparent digestible energy, % digestibility of apparent digestible energy and energy: protein ratio. However, this was not observed (p > 0.05) in the digestibility of % ether extract. Digestibility of N, P, Ca, Mg, Cu and Zn presented linear positive (p < 0.05) behavior, in which the use of these minerals increased with the increase in the level of protein in the diets. However, the digestibility of K, Fe and Mn reduced (p < 0.05) with increasing protein levels in the diets. Thus, it can be concluded that the rise in protein level in diets for juveniles of matrinxã improves nutrient digestibility. The results of this study indicated that 40% crude protein in the diets provided better results.

scholarly journals Supplementation of L-Threonine for Optimization of Dietary Crude Protein Levels in Broilers

2016 ◽  
Author(s):  
Ananda G Manegar ◽  
Jayanaik ◽  
Venkata K Reddy ◽  
Nagaraja C. S. ◽  
Siddaramanna ◽  
...  
Keyword(s):  
Crude Protein ◽  
Protein Levels ◽  
Dietary Crude Protein
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