scholarly journals Performance of broiler chickens at pre starter and starter phases using diets with different metabolizable energy values of ingredients, at different ages

2016 ◽  
Vol 46 (10) ◽  
pp. 1846-1851
Author(s):  
José Luiz Schneiders ◽  
Ricardo Vianna Nunes ◽  
Thaís Lorana Savoldi ◽  
Liliane Borsatti ◽  
Rodrigo André Schöne ◽  
...  

ABSTRACT: The experiment was carried out to evaluate the performance of broilers in 1-7 and 8-21 days of age, using metabolizable energy values of corn, soybean meal and soybean oil previously determined for each phase in another metabolism trial. Two trails were conducted, divided into phases according to ages: pre-starter (1-7 days) and starter (8-21 days). At each trial were used 924 broiler chicken randomly distributed into 42 experimental units in a completely randomized design with six treatments and seven replications. Treatments consisted of five diets using the values of apparent metabolizable energy corrected for nitrogen balance of corn, soybean meal and soybean oil determined in different metabolism trials, and one diet with the metabolizable energy values of these same ingredients, published on the literature. At the end of each stage, the animals and feed leftover were weighted to determine feed intake, weight gain and feed conversion ratio. Diets with higher soybean oil inclusion, showed superior performance at different stages. At pre-starter only feed conversion ratio was significant (P<0.05). In the initial phase, there was a significant difference (P<0.05) for feed conversion ratio, daily and average weight gain.

2019 ◽  
Vol 66 (3) ◽  
Author(s):  
Aurobinda Upadhyay ◽  
N. Felix ◽  
E. Prabu

Evaluation of the efficiency of rapeseed meal (RSM) as an alternative protein source by replacing soybean meal (SBM) in the diets of GIFT strain of Nile tilapia Oreochromis niloticus was carried out in cages installed at Poondi Reservoir, Tamil Nadu, South India. Five isonitrogenous (30% protein) and isolipidic (7% lipid) diets were formulated by incorporating RSM protein by replacing SBM protein at 0 (control diet), 25, 50, 75 and 100% levels (0RSM, 25RSM, 50RSM, 75RSM and 100RSM). Each diet was fed to two replicate groups of GIFT tilapia with a mean initial weight of 20.38 ± 0.07 g for 60 days in cages. GIFT tilapia fishes fed with 75RSM diet attained maximum percentage weight gain, PWG (590.89 %), maximum specific growth rate, SGR (3.22), best feed conversion ratio, FCR (1.03) and maximum protein efficiency ratio, PER (3.23) among the treatments. The fishes fed with 0RSM, 50RSM and 100RSM diets showed no significant difference (p>0.05) in mean weight gain, MWG, SGR, FCR and PER. No significant difference in hepatosomatic index, HSI was found among the fishes fed with 0RSM, 75RSM and 100RSM diets. There was no significant difference (p>0.05) observed in survival between treatments. The whole body proximate composition (moisture, protein, lipid and ash) of GIFT tilapia did not differ significantly (p>0.05) among the treatments. It was concluded that, rapeseed meal can completely (100%) replace soybean meal protein in the diets of cage cultured GIFT tilapia in reservoir, without compromising growth, feed conversion ratio and whole body composition.


2020 ◽  
Vol 12 (1) ◽  
pp. 19-23
Author(s):  
V. Krasteva ◽  
A. Zaikov ◽  
M. Yankova

Abstract. The present study investigated the growth performance, weight gain, feed conversion ratio, growth and survival rate of European catfish (Silurus glanis L.) fingerlings reared for one month in tanks with different colours. Four colours were used: light blue, white, green and black. The experimental unit was a flow-through system (0.8 L.min-1) consisting of eight tanks with water volume of 30L, continuous air supply and water heaters. Two hundred fish with an average weight of 1.85±0.62g were stocked in each tank. Results from the study demonstrated that the weight gain and the feed conversion ratio were poorly affected by the tested tank colours. Weight gain is slightly higher in groups A (blue) and B (white) than in groups C (green) and D (black). However, no significant difference was found in terms of weight gain among the experimental groups (p>0.05). Survival rate was the highest in group C (91%) followed by group D (88.5%). Thus, for rearing of European catfish fingerlings it is preferable to use dark coloured tanks, which resemble the natural habitat of the fish.


2018 ◽  
Vol 1 (32) ◽  
pp. 53-59
Author(s):  
Hung L. T. ◽  
Son V. V. ◽  
Ngu N. T.

An experiment was conducted to evaluate the interactive influences of dietary ME and lysine on growth of H’mong broilers from 0 to 28 days of age. The study was in a 3x3 two-factorial design, with the first factor being 3 levels of ME (3,000; 3,100 and 3,200 kcal/kg of feed) and the second one being 3 levels of lysine (1.1%; 1.0% and 0.9%), and 4 replicates with 6 broilers for each. Two hundreds and sixteen broilers were placed into 36 bamboo floor pens (6 birds/pen). The diets were formatted from corn yellow, soybean meal, soybean oil, DCP, shell, mineral and vitamin premixes, salt, and some of synthetic essential amino acids. Chicks were fed ad libitum and provided water all of time. The feeding trial was lasted for 4 weeks. The result indicated that the ME 3,000 kcal/kg of feed and lysine 1.1% diet resulted in the most efficient feed conversion ratio.


2021 ◽  
Vol 6 (2) ◽  
pp. 50-57
Author(s):  
C. A. Essien ◽  

A total of two-hundred-and-forty day old broiler chicks were used to study the response of broiler birds to diets containing graded levels of tiger nut residue (TNR) as a replacement for maize. The diets consisted of 0, 10, 20 and 30% of TNR as a replacement for maize as T1 (control), T2, T3 and T4 respectively. The birds were allotted to four dietary treatments of 4 replicates each containing 60 and 15 birds respectively in a completely randomized design. The data obtained from the experiment were subjected to one - way analysis of variance. The results showed that average weight gain (AWG) and final weight gain (FWG) were high for birds fed 10% TNR and increased numerically than the 0, 20 and 30% groups at the starter phase. In the finisher phase the average weight gain (AWG) and final weight gain (FWG) followed the same trend. Feed intake was not significantly affected by the diet at the starter and finisher phases. In the starter phase the T1 (control) recorded the best and the lowest feed conversion ratio but in the finisher phase, the best feed conversion ratio was observed in T2. The TNR inclusion had no significant (p˃0.05) effect on live weight, dressed weight, dressing percentage, cut-parts and organs of the birds. The haematological parameters were not significantly (p˃0.05) affected by the diets. All the biochemical parameters determined; serum protein, albumin, globulin, urea, creatinine, ALT, AST, cholesterol and triglyceride were not significantly (p˃0.05) affected by the treatment diet. It was concluded that tiger nut residue (TNR) as a replacement for maize at a 30% level of inclusion did not cause any deleterious effects on the performance, carcass and blood profiles of broilers


2020 ◽  
Vol 47 (3) ◽  
pp. 245-252
Author(s):  
A. M. Umar ◽  
A. U. Daninna ◽  
M. S. Muazu ◽  
A. M. Kirfi ◽  
M. Abdullahi ◽  
...  

A trial was carried out to evaluate the effect of replacing wheat offal with rumen content on the growth performance of broiler chickens. A total of one hundred and fifty (150), one day-old broiler chicks were randomly allotted to five (5) dietary treatments containing 0, 5, 10% inclusion levels of sundried rumen content and 5 and 10% inclusion levels of roasted rumen content as a replacement to wheat offal. Each treatment was replicated three times with five (5) birds per replicate in a completely randomized design experiment. The trial lasted for eight (8) weeks. The results showed that there were no significant differences in the final weights, daily feed intake, daily weight gain and feed conversion ratio at the starter phase and finisher phases. Furthermore, no significant differences in the final weight (1346.60-1508.50g), daily feed intake (83.57-100.00g), and daily weight gain (36.43-39.53g), and were observed for the overall performance. However, there was a significant difference (P<0.05) in the feed conversion ratio with the highest being 2.69g and the lowest 2.33g in the overall performance. From these findings, it could be concluded that rumen content could replace wheat offal without any detrimental effect on the performance of broiler chickens.


2013 ◽  
Vol 43 (8) ◽  
pp. 1478-1484 ◽  
Author(s):  
Josiane Aparecida de Lima ◽  
Ivana Lícia de Campos Gavioli ◽  
Cristina Maria Pacheco Barbosa ◽  
Alexandre Berndt ◽  
Flávia Maria de Andrade Gimenes ◽  
...  

The objective of this study was to evaluate the performance of sheep fed with diets consisting of different proportions of soybean silage and sugarcane tip silage. Twenty four lambs from Morada Nova breed were used, with an average age of 75 days and average weight of 16.98±2.62kg. The following diets were evaluated: T1 = 20% sugarcane tops silage + 80% concentrate, T2 = 20% sugarcane tops silage + 30% soybean silage + 50% concentrate, T3 = 20% sugarcane tops silage + 60% soybean silage + 20% concentrate. The experimental design was a randomized complete block with eight repetitions and each animal was a repetition. It was evaluated the intake of dry matter, organic matter, ash, crude protein, ether extract, neutral detergent fiber, acid detergent fiber, weight gain, and feed conversion ratio and efficiency. The total weight gain, average daily gain, feed conversion ratio and efficiency were similar, with average values of 7.9kg animal-1, 133.3g animal-1 day-1, 6.2 and 0.17, respectively. Diets based on sugarcane tops silage enriched with soybean silage + concentrate provide greater nutrient intake in relation to diet composed only of sugarcane tops silage + concentrate. Sugarcane tops silage supplemented with protein concentrate or enriched with soybean silage with lower inclusion of concentrate resulted in similar weight gains and feed conversion efficiency.


2018 ◽  
Vol 68 (2) ◽  
pp. 178-189 ◽  
Author(s):  
Delić Nikola ◽  
Drašković Vladimir ◽  
Stevanović Jevrosima ◽  
Savić Božidar ◽  
Lakić Nada ◽  
...  

Abstract Control of swine dysentery with antibiotics is often ineffective due to the resistance of Brachyspira hyodysenteriae. The potential of some herbal-based components against B. hyodysenteriae was previously studied in vitro. This study aims at the evaluation of in vivo efficacy of phytogenic feed additives in the control of swine dysentery The study involved 64 seven-week old weaned pigs allotted to 4 groups: two were fed on feed supplemented with either Patente Herba® or Patente Herba® Plus, the third received tiamulin (positive control), while the negative control was not given antibiotics or additives. Fecal consistency was recorded daily. The presence of B. hyodysenteriae in the feces was investigated weekly using microbiological assays and the PCR test. Weight gain and feed conversion ratio were calculated for each week, and for the whole experiment. B. hyodysenteriae was detected in all samples by both methods. The additives showed efficacy in the prevention and control of swine dysentery as only normal and soft stool was observed in the treated groups. By contrast, in the negative control all feces categories were detected. Frequencies of feces categories significantly differed (p<0.001) between feed-supplemented groups and the negative control. Efficacy of both additives in the prevention of SD is comparable to tiamulin, based on insignificant differences in the frequency of the various feces categories. Beneficial effects of both additives resulted in significantly (p≤0.05) higher weight gain and lower feed conversion ratio in comparison to the negative control. The average weight gains between additive-fed groups and tiamulin-treated group did not differ significantly.


2020 ◽  
Vol 46 (2) ◽  
pp. 176-185
Author(s):  
B. A. Ukorebi ◽  
P. N. Gboshe ◽  
V. N. Meremikwu

A ten-week trial was conducted to examine the effect of feeding four wild forages (Daniella oliveri, Sarcopcephalus latifolia, Vitex doniana and Ficus thoningii) on the performance characteristics of rabbits; the four forages constituted treatments 1 – 4, respectively. Twenty four unsexed rabbits of mixed breeds aged, between four and five weeks with average weight of 514g were used for the study. The animals were randomly allotted to the four treatments, each with three replicates of two rabbits per replicates. The parameters measured were, feed intake, weight gain, feed conversion ratio, carcass parts and organs weights. The results o the proximate composition especially crude protein (CP) and crude fibre (CF) were within the ranges of 15-30% CP and 20-45% CF respectively as recommended for optimum performance of rabbits. The results of the performance generally showed positive growth response as all the forages had potentials for supporting rabbit growth. The live weight gain and feed intake of experimental rabbits were significantly different (P<0.05). However, feed conversion ratio was not significantly (p>0.05) affected by the treatments. No health hazards of any nature were encountered throughout the experiment which may imply that these forages apart from supporting growth may also be medicinal. From the results, the best of the forages, viewed from the performance perspective, appears to be Ficus thoningi, which suggests that it may have supplied adequate nutrients that may be lacking in grassland pastures in the dry season, it is therefore recommended for feeding of growing rabbits.


2016 ◽  
Vol 56 (11) ◽  
pp. 1857
Author(s):  
Sayed Ali Tabeidian ◽  
Ghorbanali Sadeghi ◽  
Majid Toghyani ◽  
Mahmood Habibian

In total, 1400 1-day-old male Ross 308 broiler chicks were used to examine the effects of inclusion of alternative carbohydrate and protein sources in prestarter diets and the form of diet on subsequent performance, physiological development and carcass characteristics of broilers. The experimental diets were offered from 1 to 7 days of age and were as follows: control maize–soybean–fish meal diet (CON); maize–soybean meal–casein–dextrose diet (CD); maize–soybean meal–casein-maize starch diet (CS); maize–soybean meal–maize gluten–dextrose diet (GD); and maize–soybean meal–maize gluten–maize starch diet (GS). Each diet was provided in either solid or semi-moist (30% moisture) form, resulting in 10 dietary treatments in a 5 × 2 factorial arrangement. During the first week, a significant (P < 0.05) decrease in feed intake and weight gain was observed in the chicks receiving the CD or the CS diets compared with the chicks receiving the CON diet. Chicks receiving the CON diet also exhibited lower (P < 0.05) feed conversion ratio than did those receiving the CD or the CS diets. The adverse effect of feeding the CD and CS diets on liveweight of the birds was still evident at 21 and 42 days of age (P < 0.05). Chicks on the semi-moist diets consumed less (P < 0.05) feed than those on the solid diets during the first week. Nevertheless, chicks fed the semi-moist diets had higher (P < 0.05) weight gain and exhibited lower (P < 0.05) feed conversion ratio than did those fed solid diets. During the entire period, the highest weight gain and feed intake were observed in chicks receiving the CON prestarter diet in semi-moist form. During the first week, chicks receiving the CD or the CS diet exhibited the lowest (P < 0.05) small intestine weight and length. Conversely, at the age of 21 days, these chicks had higher (P < 0.05) small intestine weight than did the other chicks. It can be concluded that using a maize–soybean–fish meal-based prestarter diet in semi-moist form improves chick development and positively affects growth performance.


Author(s):  
Usaneeporn Soipeth ◽  
Saowanit Tongpim ◽  
Vichai Leelavatcharamas ◽  
Terdsak Khammeng

Fungal fermented protein (FFP) was the alternative feedstuff from Aspergillus niger and can be an interesting choice in poultry diets because these product was containing 20.49 % of crude protein and high leucine (0.58 %), phenylalanine (0.58 %) and lysine (0.38 %) and contained no aflatoxin. The experiments were performed using a completely randomized design with 6 treatments and 3 replications employing eight 1-day-old, mixed sex muscovy ducks (Cairina moschata) per experimental unit. The control birds were fed with a basal diet whereas the test birds were fed with FFP at 5, 10, 15, 20 and 25 % of diet. Feed and water were provided ad libitum. The feed intake of the starter showed no significant difference while the grower and finisher had higher feed intake with higher levels of FFP. In contrast, the high level of FFP yielded the lower final body weight and body weight gain, resulting in the high feed conversion ratio (4.38). For the performance of overall period, the ducks fed with 20 % FFP had higher average daily gain (29.40 g/b/d), body weight gain (2,471 g/b) and feed conversion ratio (3.63). No deaths were found in any pens and the ducks remained in good health.


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