scholarly journals Effect of dietary protein levels on the performance and carcass characteristics of cockerel finishers

2021 ◽  
Vol 31 (1) ◽  
pp. 27-31 ◽  
Author(s):  
R. I. Salami ◽  
O. G. Longe ◽  
J. A. Oluyemi
Keyword(s):  
Crude Protein ◽  
Energy Content ◽  
Carcass Characteristics ◽  
Response Criteria ◽  
Feed Conversion ◽  
Protein Levels ◽  
Dietary Crude Protein ◽  
Metabolisable Energy ◽  
Diet Dilution ◽  
Modified Diet

A study was carried out to investigate the effect of dietary crude protein (CP) levels in diets of 2600kcal kg metabolisable energy content on the performance and carcass characteristics of cockerel finishers. The experimental diets A, B, C, D and E contained CP levels of 140, 160, 180, 200 and 200g kg and they were produced by modified diet dilution technique. Response criteria such as weight gain and feed conversion ratio, among others, and carcass characteristics were measured. Results on performance and carcass characteristics, with the exception of the neck, intestinal weights  and other visceral offals, revealed that these response criteria were optimized in the birds fed on 180g kg dietary CP level. Beyond this level, it was nor beneficial to feed higher CP levels. It is therefore, concluded that the CP requirement of finisher cockerels is 18% on the bases of their Performance and carcass characteristics.

THE USE OF TWO EMPIRICAL METHODS OF SUBSTITUTION OF FEEDSTUFFS: PARBOILED CASSAVA PEEL MEAL VERSUS MAIZE IN THE DIETS OF GROWTH COCKERELS

2021 ◽  
Vol 26 ◽  
pp. 78-83
Author(s):  
R. I. Salami
Keyword(s):  
Adverse Effect ◽  
Crude Protein ◽  
Energy Content ◽  
Early Stage ◽  
Control Diet ◽  
Empirical Methods ◽  
Feed Conversion ◽  
Metabolisable Energy ◽  
C 30 ◽  
Cassava Peel

The effect of two empirical methods of substituting maize with parboiled cassava peel meal (PCPM) in the diets of 168, 11-week old Isa Brown cockerels were examined in a 3-week experiment. The control diet A contained 40% maize while the proportion of maize in the control diet was replaced with PCPM at the graded levels of 20% of diets B and C, 30% of diets D and E and 40% of diets F and G with and without regard to the energy content of PCPM respectively. Consequently, diets A, B, D and F contained metabolisable energy (ME) content of about 2600s kcal/kg while diets C, E and G contained ME of about 2400, 2300 and 2200 kcal/kg respectively. The calculated crude protein (CP) contents of all diets were similar (17% CP). The results on the performance characteristics studied did not reveal any adverse effect of the two empirical methods of substitution of maize with PCPM in the diets of growing cockerels. The growth rate and feed conversion ration of birds fed on diets containing 50 and 75% of PCPM at the expense of maize using the two substitution methods were similar to those of the control birds. However, there was depression in feed intake at the replacement levels beyond 50%. Thus, it was concluded that the two substitution methods could be used to replace maize with PCPM at the level of 75% of the former without adverse effect on weight gain and feed conversion ratio in the growing cockerels during the early stage of growth.

Effect of reduced dietary crude protein and supplemental limiting amino acids on the growth and carcass characteristics of Swarnadhara chicks

2018 ◽  
Author(s):  
Beena C. Joseph ◽  
Jayanaik T. Munegowda ◽  
Chandrapal . ◽  
K. Singh ◽  
V. Malathi
Keyword(s):  
Amino Acids ◽  
Growth Performance ◽  
Crude Protein ◽  
Control Diet ◽  
Carcass Characteristics ◽  
Feed Conversion ◽  
Breast Meat ◽  
Dietary Crude Protein ◽  
Carcass Parameters ◽  
Limiting Amino Acids

A six-week trial was conducted to determine the effect of lowering dietary crude protein levels with supplementation of limiting amino acid on growth performance, and carcass characteristics in one of the Indian improved crossbred Swarnadhara chicks in a completely randomized design having five treatments and four replications of 20 birds in each. Five isocaloric (2800 ME Kcal//kg) experimental diets based on corn-soy bean meal were formulated in a gradual crude protein decline from 21 % (control T1) to 19% by 0.5% interval. The levels of limiting amino acids namely methionine, lysine, threonine and tryptophan were met as that of control (T1) by adding synthetic preparations. Highest body weight was recorded in 2% crude protein reduced group (T5) which was comparable with control (T1). However, cumulative feed intake and feed conversion ratio of different treatments were not significantly different. Moreover, carcass parameters like dressing percentage, breast meat yield, liver and heart weights remained unaffected by the dietary treatments. Relative gizzard weight and abdominal fat weights showed variations and lower dietary protein diets were comparable with control diet (T1). In summary, crude protein content of Swarnadhara chick diet can be reduced to 19% with essential AA fortification without any adverse effect on growth performance and carcass characteristics during 0-6 weeks of age.

Comparison of protein concentrations in diets given unchanged to pigs from 18 to 93 kg live weight

1970 ◽  
Vol 12 (3) ◽  
pp. 403-412 ◽  
Author(s):  
I. A. M. Lucas ◽  
K. L. Miles
Keyword(s):  
Growth Rate ◽  
Growth Rates ◽  
Protein Level ◽  
Feed Efficiency ◽  
Crude Protein ◽  
Energy Content ◽  
Live Weight ◽  
Progeny Test ◽  
Feed Conversion ◽  
Protein Levels

SUMMARYIn the national pig progeny test stations one diet is given up to about 55 kg live weight and another, with less protein, is given from then until slaughter. These diets were compared with four ‘single’ diets, similar in digestible-energy content, but containing either 15·6, 17·4, 18·7 or 22·1% crude protein, and each given unchanged from 18 to 93 kg live weight. There were twenty groups of one castrate and one gilt on each treatment.Pigs given the lowest protein levels had the poorest growth rates and feed conversion efficiency up to 57 kg live weight, but the best from 57 to 93 kg. Hence there were no differences in overall feed efficiency, and overall growth rate was only slightly less with the lowest protein level than with other treatments.Carcass leanness rose with protein level in the ‘single’ diets over the range 15·6·18·7% crude protein, but a further increase to 22·1% reduced leanness.Pigs given the progeny test diets had carcasses intermediate in composition to those of pigs on the ‘single’ diets with 17·4% and 18·7% protein.

scholarly journals Effect of protein concentrations in the diet on productive performance, carcass characteristics, and meat chemical composition of broiler chickens in the dry subtropics

Nova Scientia ◽  
2020 ◽  
Vol 12 (25) ◽  
Author(s):  
Fidel Infante-Rodríguez ◽  
Miguel Ángel Domínguez-Muñoz ◽  
Martín Francisco Montaño-Gómez ◽  
Michael E. Hume ◽  
Robin C. Anderson ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Broiler Chickens ◽  
Crude Protein ◽  
Carcass Characteristics ◽  
Productive Efficiency ◽  
Broiler Chicks ◽  
Productive Performance ◽  
Genetic Management ◽  
Protein Levels ◽  
Dietary Crude Protein

Introduction: Current diets of broiler chickens tend to increase protein levels to obtain high productive variables that are achieved in combination with genetic, management, and sanitary improvements, among others. An increase in dietary crude protein levels does not always accompany an increase in broiler productive efficiency due to multiple factors involved in the production system. The objective of this study was to evaluate the effect of increasing levels of dietary crude protein (CP) on productive performance, carcass characteristics, and chemical composition of breast and thigh meat in broiler chickens raised in the dry subtropics of northeastern Mexico.Method: The study used 200, 1-day-old male Ross broiler chicks. In a completely randomized design, birds were allocated to the four treatments with five replicates (floor pens) of ten birds each. The trial was divided in two phases (starter and finisher) of 21 days each (42 days total). Treatment diets (T) for starter and finisher phases had crude protein concentrations (CP; %) of 21 and 18.1 (T1), 21.4 and 18.5 (T2), 21.8 and 18.9 (T3), and 22.2 and 19.3 (T4), respectively. Within each feeding phase, the four treatment diets were formulated to similar levels of apparent metabolizable energy.Results: Protein concentrations had no effect (P > 0.05) on weight gain, while feed intake was greater in T1 (P < 0.05) than in T2 and T3. Feed conversion was better in T2 and T4 (P < 0.05) than in T1. There was no influence of treatment on carcass weight or carcass cuts (P > 0.05). Carcass yield was greater in T1 than in T3 (P < 0.05). Breast and thigh dry matter and ether extracts were similar (P > 0.05) between treatments. Breast crude protein was greater (P < 0.05) in T2 than in T3. The lowest (P < 0.05) CP concentration in thigh meat was in T3.Discussion or Conclusion: These results indicated that in the dry subtropics area of northeastern Mexico increases in CP above the level of T2 (21.4% and 18.5% CP in starter and finisher diets, respectively) did not improve broiler chicken productive performance, carcass characteristics or meat chemical composition.

scholarly journals Growth performance and body composition of giant trahira fingerlings fed diets with different protein and energy levels

2010 ◽  
Vol 45 (9) ◽  
pp. 1021-1027 ◽  
Author(s):  
Galileu Crovatto Veras ◽  
Ana Lucia Salaro ◽  
Jener Alexandre Sampaio Zuanon ◽  
Antonio Policarpo Souza Carneiro ◽  
Daniel Abreu Vasconcelo Campelo ◽  
...  
Keyword(s):  
Crude Protein ◽  
Energy Levels ◽  
Mineral Matter ◽  
Feed Conversion ◽  
Body Lipid ◽  
Body Protein ◽  
Protein Levels ◽  
Dietary Crude Protein ◽  
Energy Retention ◽  
Gross Energy

The objective of this work was to determine the proper levels of protein and energy in diets of Hoplias lacerdae fingerlings. The dietary crude protein (CP) and gross energy (GE) levels for fingerlings of giant trahira were evaluated in a completely randomized 4x3 factorial design with 35, 39, 43 and 47% CP and 4,100, 4,300 and 4,500 kcal kg-1 of GE, and four replicates. The survival rate was 99.22%, and a linear improvement on the performance parameters was detected after increasing diet crude protein levels. Feed conversion ratio decreased with increasing levels of dietary protein and energy in the diets. A significant interaction between crude protein and gross energy was observed over body protein and mineral matter. Body lipid has increased linearly as gross energy in the diet increased. The retention of crude protein and energy showed a linear increasing with rising of crude protein levels in the diet. Crude protein level at 47% provides the best performance and energy retention, independently of the gross energy levels in the diet.

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.

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