Performance and body composition of pigs reared under tropical conditions receiving two crude protein levels: conventional and precision feeding

Author(s):  
L.S. Santos ◽  
P.H.R.F. Campos ◽  
C. Pomar ◽  
L. Hauschild
Insects ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 475
Author(s):  
Vassilios Sideris ◽  
Maria Georgiadou ◽  
Georgios Papadoulis ◽  
Konstantinos Mountzouris ◽  
Antonios Tsagkarakis

The effect of spent coffee grounds (SCG), brewer’s spent grains (BSG) and their mixtures with the addition of brewer’s yeast (BY) were tested in two rearing densities of the Black Soldier Fly, Hermetia illucens (L.). Different treatments were investigated on larval development, survival, yield, protein conversion (PrCR) and bioconversion rate (BCR), substrate mass reduction and body composition of the insect. BSF larvae were able to develop sufficiently in all diets, except on sole SCG. The addition of BY enhanced the performance properties of diets, especially in the case of SCG, where larvae underperformed. Substrate mass reduction, PrCR and BCR were affected only by feed and exhibited higher values on reference feed, followed by BSG and SCG+BSG enriched with BY. Density did not have a significant effect on various larval nutrients, except for fat, which was higher on larvae fed enriched feeds with BY and in the 300 larval density. The interaction between feed and density strongly affected the nitrogen and protein levels, larval yield and ash. Generally, diets which contained SCG exhibited high larval crude protein levels. Our results illustrate that low value beverage by-products can be successfully utilized as constituents of a successful BSF diet.


2021 ◽  
Vol 99 (Supplement_1) ◽  
pp. 178-179
Author(s):  
Dalton C Humphrey ◽  
J R R Bergstrom ◽  
Estefania Perez Calvo ◽  
Laura L Greiner

Abstract The objective of this study was to determine if benzoic acid in combination of a direct fed microbial could improve grow-finish performance in swine. Three hundred and twenty (DNA 600 X 241, DNA Genetics, Columbus, NE) barrows and gilts were used to evaluate the effect of benzoic acid (BA; VevoVitall, DSM Nutritional Products, Parsippany, NJ) with or without a direct fed microbial (DFM; PureGro, DSM Nutritional Products, Parsippany, NJ) on the growth performance of pigs from approximately 35 to 125 kg. Pigs were sorted by sex, randomly placed into complete blocks, and equalized by weight (40 pens total). Pigs were fed a common diet for 11 days. Following acclimation, pens were assigned to one of four dietary treatments: standard commercial (PC), 85% PC SID lysine and lowered crude protein (NC), PC plus BA (BA at 0.3% inclusion), and PC plus BA and DFM (BA+DFM at 0.3 and 0.025% inclusion, respectively). Ultrasound was conducted to evaluate body composition on day 81. Data were analyzed using PROC MIXED in SAS with pen as the experimental unit. Results were considered significant at P≤0.05 and a trend at P >0.05 and P≤0.10. Pigs fed BA had increased ADG compared to pigs fed PC (1.11 vs. 1.07 kg/d, P=0.02) and NC (1.11 vs. 1.07 kg/d, P=0.01), and similar ADG compared to pigs fed BA+DFM (1.11 vs. 1.09, P=0.21). G:F in pigs fed BA tended to be higher compared to pigs fed NC (0.175 vs. 0.172, P=0.06), and similar compared to pigs fed PC (0.175 vs. 0.176, P=0.51) and BA+DFM (0.175 vs. 0.174, P=0.73). There was a tendency in therapeutic intervention frequency across treatments (P=0.07). In conclusion, reducing lysine and crude protein levels resulted in poorer feed efficiency and BA resulted in increased gain in growing and finishing pigs from approximately 35 to 125 kg.


2016 ◽  
Vol 40 (2) ◽  
pp. 217-225
Author(s):  
Ricardo Henrique Bastos de Souza ◽  
Francisco Oliveira de Magalhães Júnior ◽  
Filipe dos Santos Cipriano ◽  
Kauana Santos Lima ◽  
Sylvia Sanae Takishita ◽  
...  

ABSTRACT The growth of the Brazilian aquaculture has stimulated the development of the productive chain of native species, including marine environment. The objective of this study was to evaluate the growth performance of juvenile mojarra fish (Diapterus rhombeus) fed diets containing different concentrations of crude protein (32, 36, 40 and 44 g 100 g-1). The 80 juvenile mojarra (7.2±1.5 g) were kept in 16 circular tanks (150 L). The study design used was completely randomized with four treatments and four repetitions. The fish were fed four times a day. At the end of the experiment (60 days) the final weight, feed intake, weight gain (WG), feed:gain ratio (FGR), protein efficiency rate (PER), energy efficiency rate, specific growth, survival rate and, body composition were evaluated. It was verified significant effect of protein level on the WG, with the best value at the level of 38.20 g 100 g-1 of crude protein. For FGR, the best estimated value occurred with 38.06 g 100 g-1 of crude protein, similar to that reported for the PER (38.91 g 100 g-1). The other performance parameters and body composition were not influenced by crude protein levels. Diet crude protein concentrations between 38.06 and 38.91 g 100 g-1 provide the best performance indices for juvenile mojarra.


2021 ◽  
Vol 6 ◽  
pp. 52-58
Author(s):  
M. C. Njike

A FEEDING trial was carried out with Warren cockerels to determine the minimum crude protein requirements of growing chickens (6 - 14 Weeks) under the Nigerian (tropical) environment. Three series of diets with protein levels ranging from 13 to 22 percent were used for this study. The first series consisted of unsupplemented all-plant protein diets, the second and third series were the all-plant protein diets supplemented with methionine or methionine plus fishmeal respectively. Satisfactory growth and feed conversion efficiency were observed with increasing concentration of protein, changes in body weight being similar to the pattern observed with the baby chicks fed the same protein levels (Njike 1978a). Maximum weight gain was achieved by chicks on unsupplemented rations containing 20 and 22 percent protein and on 18 % protein diets supplemented with methionine or methionine plus fish meal. The result clearly showed that there is no advantage in supplementing grower rations with fishmeal; the most economic ration is unsupplemented 18% protein diet The performance of chicks on unsupplemented 18% protein diet or 16% protein diet supplemented with methionine or methionine plus fishmeal are comparable and are protein levels of choice for growing chickens under tropical conditions like Nigeria.


2014 ◽  
pp. 3921-3929 ◽  
Author(s):  
Mario Benítez-Mandujano ◽  
Jesús T. Ponce-Palafox

ABSTRACTObjective. Evaluate the effects of varying dietary protein and lipid levels on the growth and body composition of adult freshwater prawns, Macrobrachium carcinus (Linnaeus 1758), in a recirculation system for 11 weeks (77 days). Materials and methods. The experimental treatments were assigned in triplicate. Six test diets were formulated with three different protein levels (35, 40 and 45%) and two lipid levels (8 and 13%). Results. The highest survival rate, growth indices and feed utilization were observed for M. carcinus adults fed protein:lipid diets of 35:13, 40:13 and 45:13, and the lowest values for these parameters were recorded for prawns fed diets with the lowest lipid levels; the differences in these parameters between these types of diets were significant (p<0.05). A nonsignificant tendency for an increased percentage of protein in the body with an increased dietary protein level was observed. The percentage of lipids decreased with an increasing dietary protein level, and no definite trends in ash content were found. Conclusions. The results suggest that a diet with 35% dietary crude protein and 13% lipids enhances the growth and body composition of adult M. carcinus.


2020 ◽  
Vol 6 (6) ◽  
pp. 94-100
Author(s):  
Serge-Olivier Konan KOUASSI ◽  
◽  
Yves Bénarèce Tra DJE BI ◽  
Soualio KAMAGATE ◽  
Mathieu Nahounou BLEYERE ◽  
...  

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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