scholarly journals Productive performance of Mexican Creole chickens from hatching to 12 weeks of age fed diets with different concentrations of metabolizable energy and crude protein

2020 ◽  
Author(s):  
Miguel Ángel Matus-Aragón ◽  
Fernando González-Cerón ◽  
Josafhat Salinas-Ruiz ◽  
Eliseo Sosa-Montes ◽  
Arturo Pro-Martínez ◽  
...  
Keyword(s):  
Crude Protein ◽  
Metabolizable Energy ◽  
Productive Performance

scholarly journals Productive Performance of Mexican Creole Pullets and Immature Males Fed Different Levels of Metabolizable Energy and Crude Protein

Poultry ◽  
2022 ◽  
Vol 1 (1) ◽  
pp. 3-13
Author(s):  
Miguel Ángel Matus-Aragón ◽  
Josafhat Salinas-Ruiz ◽  
Fernando González-Cerón ◽  
Eliseo Sosa-Montes ◽  
Arturo Pro-Martínez ◽  
...  
Keyword(s):  
Body Composition ◽  
Crude Protein ◽  
Nutrient Use Efficiency ◽  
Metabolizable Energy ◽  
Productive Performance ◽  
Feed Conversion ◽  
Final Body Weight ◽  
Nutrient Use ◽  
Use Efficiency ◽  
Total Body

Mexican Creole birds are a poorly researched genetic resource whose nutritional requirements are unknown. The objective was to evaluate the productive performance and nutrient use efficiency of Mexican Creole birds, using four diets with different concentrations of metabolizable energy (EM, MJ/kg) and crude protein (PC, g/kg). The experimental diets with constant ME/CP ratios equal to 0.06, were: 12.55/200, 11.92/190, 11.30/180 and 10.67/170. One hundred and ninety-two 12-week-old creole birds (96 males and 96 females) were randomly distributed amongst the diets (24 males and 24 females each). Due to the diet × sex interaction, males fed the 10.67/170 diet had higher feed intake, and males under 10.67/170, 11.92/190 and 11.30/180 had higher final body weight and weight gain than the other birds. Feed conversion ratio was lower in birds with diets 12.55/200 and 11.92/190. Total body fat retention was higher in females with the diet 12.55/200, 11.92/190 and 11.30/180. In conclusion, males with the 10.67/170 (lowest ME and CP) diet showed a high productive performance, without compromising carcase yield and body composition, while females with all diets did not show differences in productive performance, carcass yield and body composition.

scholarly journals Prediction of metabolizable energy values in poultry offal meal for broiler chickens

2010 ◽  
Vol 39 (10) ◽  
pp. 2237-2245 ◽  
Author(s):  
Edney Pereira da Silva ◽  
Carlos Bôa-Viagem Rabello ◽  
Luiz Fernando Teixeira Albino ◽  
Jorge Victor Ludke ◽  
Michele Bernardino de Lima ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Broiler Chickens ◽  
Crude Protein ◽  
Matter Content ◽  
Metabolizable Energy ◽  
Mineral Matter ◽  
Ether Extract ◽  
High Fat ◽  
Collection Method ◽  
Gross Energy

This research aimed at generating and evaluating prediction equations to estimate metabolizable energy values in poultry offal meal. The used information refers to values of apparent and true metabolizable energy corrected for nitrogen balance (AMEn and TMEn) and for chemical composition of poultry offal meal. The literature review only included published papers on poultry offal meal developed in Brazil, and that had AMEn and TMEn values obtained by the total excreta collection method from growing broiler chickens and the chemical composition in crude protein (CP), ether extract (EE), mineral matter (MM), gross energy (GE), calcium (Ca) and phosphorus (P). The general equation obtained to estimate AMEn values of poultry offal meal was: AMEn = -2315.69 + 31.4439(CP) + 29.7697(MM) + 0.7689(GE) - 49.3611(Ca), R² = 72%. For meals with high fat contents (higher than 15%) and low mineral matter contents (lower than 10%), it is suggest the use of the equation AMEn = + 3245.07 + 46.8428(EE), R² = 76%, and for meals with high mineral matter content (higher than 10%), it is suggest the equations AMEn = 4059.15 - 440.397(P), R² = 82%. To estimate values of TMEn, it is suggested for meals with high mineral matter content the equation: TMEn = 5092.57 - 115.647(MM), R² = 78%, and for those with low contents of this component, the option is the equation: TMEn = 3617.83 - 15.7988(CP) - 18.2323(EE) - 96.3884(MM) + 0.4874(GE), R² = 76%.

NUTRITIONAL VALUE OF HEAT TREATED WHOLE SOYBEANS

1971 ◽  
Vol 51 (1) ◽  
pp. 57-65 ◽  
Author(s):  
J. B. ARNOLD ◽  
J. D. SUMMERS ◽  
W. K. BILANSKI
Keyword(s):  
Heat Treatment ◽  
Crude Protein ◽  
Initial Moisture Content ◽  
Metabolizable Energy ◽  
Process Time ◽  
Commercial Diet ◽  
Heat Treated ◽  
Toxic Factors ◽  
Experimental Treatments ◽  
Quantity Of Heat

The heat treatment of whole soybeans was investigated, with consideration for oven temperature, process time and the initial moisture content of the beans, with a view to optimizing the removal of the toxic factors and enhancing the feed utilization of the soybean. Two purified diets equal in both crude protein level and classical metabolizable energy level were used. One of the diets consisted of ground whole soybeans (both heat treated and raw), whereas the other diet, containing commercial soybean meal as the only source of protein, provided the control for the tests. Male, White Leghorn cockerel chicks were selected on a weight basis and randomized in battery pens. The experimental treatments were assigned at random to pens and the chicks were provided feed and water ad libitum. Three experiments were conducted using soybeans with initial moisture of 10, 12.5 and 16% and heat treatment for 10, 5 and 3 minutes in a still-air oven within a temperature range of 149–246 C. Certain combinations of time and temperature not only promoted weight gains and feed efficiencies superior to those of the commercial diet, but also resulted in minimal pancreatic hypertrophy. The data obtained reaffirmed that a critical quantity of heat is required to deactivate the toxic factors and to ensure maximum nutritive availability.

scholarly journals The heat of combustion of the urine of sheep and cattle in relation to its chemical composition and to diet

1966 ◽  
Vol 20 (3) ◽  
pp. 449-460 ◽  
Author(s):  
K. L. Blaxter ◽  
J. L. Clapperton ◽  
A. K. Martin
Keyword(s):  
Regression Analysis ◽  
Standard Deviation ◽  
Crude Protein ◽  
Metabolizable Energy ◽  
Heat Of Combustion ◽  
Crude Protein Content ◽  
Mean Values ◽  
Residual Standard Deviation ◽  
Analytical Errors ◽  
Cattle And Sheep

1. The results of over 500 determinations of the heat of combustion of the urine produced by cattle and sheep have been analysed statistically. 2. The analytical errors for nitrogen, carbon and heat of combustion were ±0.54, ±1.4 and ±2.2%. The error attached to an estimate of the heat of combustion of the urine produced by an individual sheep in 4 days was ± 10%.3. At the maintenance level of feeding, the heat of combustion of the urine (U kcal/ 100 kcal food) was related to the crude protein content of the diet (P%)by the equationU = 0.25P+1.6with a residual standard deviation of ±0.88 kcal/100 kcal.4. Regression analysis of the relation between the heat of combustion of urine and its N content showed significant differences with diet. The heat of combustion of the urine of sheep was 9.7 kcal/g C and of cattle 10.3 kcal/g C, and did not vary with diet. 5. It is shown that the variation in the heat of combustion of urine/g N and its relative constancy/g C arises largely from variation, from diet to diet, in the proportion of the N excreted as hippurate. 6. The results have been combined with the results of a similar analysis (Blaxter & Clapperton, 1965) of methane production by sheep to show that the ratio of metabolizable energy to digested energy varies very little from mean values of 0.82 for roughages, 0.85 for cereals and 0.79 for oilseed cakes and meals.

The efficiency of food utilization for egg production by pullets and yearling hens

1959 ◽  
Vol 52 (3) ◽  
pp. 364-368 ◽  
Author(s):  
W. Bolton
Keyword(s):  
Crude Protein ◽  
Egg Production ◽  
High Energy ◽  
Metabolizable Energy ◽  
Low Energy ◽  
Food Utilization ◽  
Digestible Energy ◽  
Digestible Protein ◽  
The Cost ◽  
Low Energy Diet

1. The efficiency of food conversion by pullets and yearlings fed on high- and low-energy diets has been determined.2. Egg production was slightly higher by birds fed the low-energy diet for both pullets and yearling hens; pullets laid more eggs than yearling hens.3. For each age, the gross food intake was greater for birds fed the low-energy diet; the consumptions of digestible protein, non-protein digestible energy and metabolizable energy were the same for both diets and both ages of bird.4. The food cost per dozen eggs was slightly greater in the yearling year when the cost of rearing the pullets was ignored, and about the same when it was included.5. The efficiency of utilization of digestible energy and protein showed only a slight decrease from the pullet to the yearling year.6. The variation in the composition and digestibility of eighteen consecutive mixes of the highenergy diet and twenty-five of the low-energy diet was: crude protein 2%, non-protein digestible energy 5% and metabolizable energy 0·4 kg. cal./g. The digestibility of the crude protein and oil was 87%, for both diets; carbohydrates were 81% digestible in the high-energy diet and 59% in the low-energy diet.

scholarly journals Proximate, vitamin and mineral composition of earthworm (Hyperiodrilus euryaulos) cultured indifferent Animal dung Media

2020 ◽  
Vol 44 (2) ◽  
pp. 257-261
Author(s):  
O. A. Ukoha ◽  
D. N. Onunkwo ◽  
O. M. Obike ◽  
U. C. Nze
Keyword(s):  
Mineral Composition ◽  
Crude Protein ◽  
Cold Water ◽  
Palm Kernel ◽  
Sodium Content ◽  
Metabolizable Energy ◽  
Garden Soil ◽  
Randomized Design ◽  
Animal Dung ◽  
Poultry Droppings

The experiment to investigate the proximate, vitamin and mineral composition of earthworm (Hyperiodriluseuryaulos) cultured in different animal dung media was conducted using a completely randomized design for ten weeks. Rabbit, Poultry, Pig and Goat dungs were incorporated into garden soil after sterilizing in other to ensure that there was no earthworm or any insect alive in the substrate. Live earthworms were introduced into these different animal dungs which were designated as T1,T2, T3 and T4 for rabbit, poultry, pig and goat dungs respectively. Diet formulated with maize, palm kernel cake and wheat offal was evenly spread on the diet and then mixed with the substrate. At the end of the tenth week, the earthworms were harvested by hand picking. They were soaked in warm water to kill them and rinsed with cold water to remove sand. The dried and milled earthworms were analyzed for chemical composition. The result of the study revealed significant (p<0.05) differences in percentage dry matter, ash, ether extract, crude protein, crude fiber, and nitrogen free extract and Metabolizable energy. The earthworm cultured in goat dung (T4) had the highest (p<0.05) crude protein percent of 38.49% while those from the rabbit dung (T1) recorded 28.72%CP. The Sodium content of the earthworms cultured in rabbit droppings T1was significantly (p<0.05) the highest recording 126.52mg, while others were 86.63, 86.40 and 93.73mg for poultry, pig and goat dungs respectively.1.74Vitamin A content of earthworms cultured in the different animal dung media were 1.74mg/100g DM, 2.10, 1.36 and 1.30mg/100g DM for the rabbit, poultry, pig and goat dungs respectively. The proximate composition of the earthworms cultured in the different animal dung media indicate that the earthworms except those cultured in the poultry droppings have high crude protein content and can be used to substitute fish meal in livestock diets. Moreover, the high content of ash in all the treatments suggests that they may be rich in minerals especially sodium.

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