PERFORMANCE OF BROILER CHICKENS SUBJECTED TO WEEKLY CHANGES IN DIET COMPOSITION BASED ON PREDICTED AMINO ACID REQUIREMENTS

1981 ◽  
Vol 61 (4) ◽  
pp. 983-988 ◽  
Author(s):  
MARY LOU FISHER ◽  
S. LEESON ◽  
J. D. SUMMERS ◽  
K. SCHAEFER
Keyword(s):  
Body Weight ◽  
Amino Acid ◽  
National Research Council ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
Feed Cost ◽  
Significant Difference ◽  
Amino Acid Requirements ◽  
Model Treatment ◽  
Bird Weight

A 7-wk floor trial experiment was conducted with male broiler chicks to investigate the use of a model equation to predict amino acid requirements. Chicks were fed two least-cost diet treatments based on (1) the National Research Council (NRC 1977) and (2) model-calculated amino acid recommendations. The dietary treatment based on model-calculated amino acid requirements supported a significantly (P < 0.01) better bird weight at 7 and 14 days. No significant difference (P > 0.05) in body weight was noted between treatments for the remainder of the growing period. A similar trend was noted for feed conversion, as the model treatment supported significantly better ratios (P < 0.01) from 0 to 7 and from 8 to 14 days of age. No significant differences (P > 0.05) in conformation, fleshing, breast or back finish were noted between birds of the two treatments. A cost analysis is presented; on the basis of feed cost per bird the model treatment was significantly (P < 0.01) superior to the NRC treatment for producing birds of a similar body weight in 49 days. However, no significant difference (P > 0.05) was noted between the two treatments on the basis of feed cost per kilogram of bird weight. These results indicate the potential of using model-predicted amino acid values as a basis for diet formulation.

Broiler chicken, Fishmeal, Infertile eggs meal, Performance, Carcass, Blood indices

2020 ◽  
Vol 47 (2) ◽  
pp. 131-143
Author(s):  
O. S. Akinola ◽  
K. A. Akintola ◽  
O. O. Oluwatosin
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Total Protein ◽  
Broiler Chicken ◽  
Body Weight Gain ◽  
Serum Biochemistry ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
Blood Indices ◽  
Feed Cost

Fishmeal, as animal protein source, is characterised by high cost, dwindling availability and adulteration by feed ingredient suppliers. In view of these, two hundred and ten (210) ten-day old broiler chicks were used, in 2 x 4 experimental layouts, to investigate the effect of replacing fishmeal with infertile egg meal of two forms (with or without shell) and at four graded levels (0, 30, 60 and 100%) on growth performance, haematology, serum biochemistry and carcass indices of broiler chicken. Crude protein (50.2%) and Ether extract (30.6%) were higher in infertile egg without shell (IEM) than in infertile egg withshell (IEMS) (41.36 and 23.4%). Egg forms (IEM or IEMS) did not affect (P>0.05) performance indices measured. Increasing levels of infertile egg meal reduced (P<0.05) body weight gain and final weight without affecting feed conversion ratio (FCR). The IEMS use led to reduction in feed cost (P<0.05) than in IEM. Levels of infertile egg meal reduced (P<0.05) feed cost per body weight gain with least cost at 100% replacement of fishmeal. The IEM elevated (P<0.05) serum total protein, urea and globulin but lowered serum creatinine. Increasing the levels of infertile egg meal lowered blood urea while increasingtotal protein and globulin. Inclusion of IEM at 100% improved Total protein, Albumin and Globulin. The cost of feed reduced (P<0.05) by 13.8% at 100% IEM and IEMS. It was concluded that infertile egg without shell can be used up to 100% in place of fishmeal in broiler chicken diets to reduce feeding cost and improve health without affecting the performance. 

scholarly journals EFFECTS OF QUANTITATIVE FEED RESTRICTION ON BROILER GROWTH AND ECONOMICS OF PRODUCTION

1990 ◽  
Vol 17 ◽  
pp. 6-10
Author(s):  
E. N. Nwachukwu ◽  
S. N. Ibe
Keyword(s):  
Body Weight ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Feed Restriction ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
Feed Cost ◽  
Economic Parameters ◽  
Ad Libitum ◽  
Ad Libitum Intake

The effects of quantitative feed restriction on broiler growth and monetary returns were investigated using two hundred and forty Cobb broiler chicks. Three levels of restriction namely, 5 10 and 15% of ad libitum intake, were randomly imposed on different groups. Birds that were restricted in the starter phase of growth were later full-fed in the finisher phase, and vice versa. Body weight was depressed by all levels of feed restriction considered. Feed conversion ratio (FCR) was however not significantly affected. Although quantitative feed restriction significantly reduced feed cost the highest revenue was realized from control birds. All economic parameters considered did not show feed restriction as having advantage over full feeding.

scholarly journals Effects of peripheral administration of ghrelin antagonist [D-Lys<sup>3</sup>]-GHRP-6 on growth performance and blood biochemical indices in broiler chickens

2016 ◽  
Vol 59 (1) ◽  
pp. 113-119 ◽  
Author(s):  
Habib Aghdam Shahryar ◽  
Alireza Lotfi
Keyword(s):  
Body Weight ◽  
Feed Intake ◽  
Broiler Chickens ◽  
Mammalian Species ◽  
Broiler Chicks ◽  
Post Injection ◽  
Feed Conversion ◽  
Blood Samples ◽  
Blood Biochemical ◽  
Significant Difference

Abstract. In the present study, possible effects of peripheral administration of ghrelin antagonist [D-Lys3]-GHRP-6 on chicken performance, thyroid hormones level and serum biochemical parameters were investigated. Broiler chicks divided into five experimental groups were reared up to day 42. On day 21, a treatment was assigned to the five groups: group 1 (control), chickens without any administration of peptide or solution; group 2 (G50), chickens with intraperitoneal (IP) injection of 50 ng per 100 g body weight (BW) of D-Lys3 peptide on day 21; group 3 (G100), chickens with IP injection of 100 ng per 100 g BW of D-Lys3 peptide on day 21; group 4 (G150), chickens with IP injection of 150 ng per 100 g BW of D-Lys3 peptide on day 21; and group 5 (G200), chickens with IP injection of 200 ng per 100 g BW of D-Lys3 peptide on day 21. On days 21 (post-injection) and 42 (post-rearing), blood samples were obtained from the animals for laboratory analyses. Experimental groups administered the GHS-R antagonist showed less feed intake – i.e., administration of greater doses led to less feed intake (P < 0.01). Daily weight gains within groups G150 and G200 decreased (P < 0.01) in comparison with the control. The feed conversion ratio (FCR) did not differ among the groups. There was a significant difference between control and experimental groups for glucose, total cholesterol and phosphorus levels (P < 0.01) in post-injection samples. In post-injection and post-rearing blood samples, the thyroid hormone (T3 and T4) in 6 h increased in treated groups in comparison with the control (P < 0.01). The infusion of ghrelin antagonist [D-Lys3]-GHRP-6 reduces feed intake and body weight. With regard to increase in T4 level, it can be inferred that [D-Lys3]-GHRP-6 may increase metabolic rate, lipolysis and weight loss, which is similar to results obtained in mammalian species.

scholarly journals Growth performance and feed cost benefit of starter broiler chickens fed diet containing earthworm meal

2020 ◽  
Vol 47 (1) ◽  
pp. 208-213
Author(s):  
O. A. Ekine ◽  
D. N. Onunkwo
Keyword(s):  
Growth Performance ◽  
Feed Intake ◽  
Broiler Chickens ◽  
Cost Benefit Analysis ◽  
Control Diet ◽  
Cost Benefit ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
Feed Cost ◽  
Significant Difference

The study was carried out to evaluate the growth performance and feed cost benefit of starter broiler chickens offered graded levels of earthworm meal in replacement for fishmeal. Atotal of 120, one day old Anak broiler chicks were procured from a reputable hatchery and allotted to four treatment groups of 30 birds each. Each group was further divided into three replicates of 10 birds per replicate. A total number of four diets were used in the feeding trial. Diet 1 (control) has fish meal and no earthworm meal, while in diets 2,3 and 4, the quantity of fishmeal in the control diet was replaced by 25%, 50% and 100% respectively with earthworm meal. No significant difference (P>0.05) was observed in the performance of the birds. On the average daily feed intake of birds in diets 2 and 4 had high (P>0.05) feed intake, followed by the birds in diets 3, while the birds in diet 1 had the lowest feed intake. But there was no significant difference (P>0.05) in feed conversion ratio. The feed cost benefit analysis revealed a significant difference (P<0.05) on cost of feed consumed. Feed cost per kg was reduced as the levels of earthworm meal increased. Replacement of fishmeal with earthworm meal at 25%, 50% and 100% has the potential to improve the growth performance of broiler birds. Therefore, it is recommended to commercial poultry farmers to use earthworm meals in their poultry feeding.

scholarly journals Growth Performance, Serum Biochemical Indices, Duodenal Histomorphology, and Cecal Microbiota of Broiler Chickens Fed on Diets Supplemented with Cinnamon Bark Powder at Prestarter and Starter Phases

Animals ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 94
Author(s):  
Mohammed M. Qaid ◽  
Saud I. Al-Mufarrej ◽  
Mahmoud M. Azzam ◽  
Maged A. Al-Garadi ◽  
Hani H. Albaadani ◽  
...  
Keyword(s):  
Body Weight ◽  
Broiler Chickens ◽  
Body Weight Gain ◽  
Basal Diet ◽  
Positive Control ◽  
Negative Control ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
Serum Globulin ◽  
Maximum Improvement

Ross 308 broiler chicks (n = 240) aged 1 day were assigned to five groups for eight replicates (six chicks for each) (3♂ and 3♀). Basal dietary groups were supplemented by 2000, 4000, and 6000 mg/kg cinnamon (CN) for 21 days. Basal diet alone was used as a negative control, and basal antibiotic diet (Colimox) was used as a positive control. At 10, 14, and 21 days of age, chicks that received 2000 mg CN and Colimox had a higher body weight, resulting in an increase in body weight gain. CN also resulted in the maximum improvement in the feed conversion ratio and feed efficiency over 1–21 days at the level of 2000 mg/kg. At days 10, the maximum relative breast weight was 2000 mg/kg of CN. Mean serum albumin concentrations, duodenal villus height, and goblet cell density increased (p < 0.05) by 2000 mg/kg of CN, and mean serum globulin and total protein concentrations and crypt depth increased (p < 0.05) by 6000 mg/kg of CN compared with control. Increased cecal Escherichia coli number was CN dose-dependent. In conclusion, dietary inclusion of 2000 mg/kg CN can be applied as an alternative to in-feed antibiotics for broiler starter diet.

scholarly journals Paper products as litter materials for broilers: performance, carcass defects, footpad lesions.

1969 ◽  
Vol 90 (1-2) ◽  
pp. 1-8
Author(s):  
Héctor L. Santiago ◽  
Kenneth H. Aponte ◽  
Abner A. Rodríguez ◽  
José A. Orama ◽  
Mireille Argüelles
Keyword(s):  
Body Weight ◽  
Feed Intake ◽  
Small Animal ◽  
White Paper ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
Recycled Paper ◽  
Carcass Yield ◽  
Randomized Design ◽  
Moisture Percentage

Recycled paper products were evaluated as litter material for broilers; parameters were growth performance, carcass quality, and footpad problems. One hundred sixty-eight broiler chicks were raised to market age (42 d) in an open-sided poultry house located at the Lajas Agricultural Experiment Station Small Animal Research Farm. Birds were assigned to 12 floor pens bedded with either rice hulls (RH) as control; a 50:50 mix of RH and shredded white paper (SWP); or a 50:50 mix of RH and shredded newspaper (SNP) according to a completely randomized design replicated four times. Traits measured were body weight, feed intake, feed conversion, carcass yield, breast blister score, footpad burn score, and mortality. Litter moisture percentage was assessed at 14, 28, and 42 d of age. Litter material had no influence on body weight, breast blister score, or bird mortality. However, birds raised on SWP had lower feed intake and higher body weight than those raised on RH and SNP. No significant differences in feed conversion were observed among treatments from 7 to 28 d of age. At 35 and 42 d, birds raised in SWP had significantly lower feed conversion than controls, whereas feed conversion of birds raised in SNP did not differ from that of the other treatments. No differences were found for carcass yield among treatments. At all sampling times, litter moisture percentage was significantly higher in SNP than in the control. No litter caking problems were observed in any of the treatments. Significant differences in footpad burn scores were observed among all treatments, with birds raised on SNP having higher scores (severer lesions), than those on SWP and RH.The results suggest that recycled paper products could be an excellent alternative bedding material for broilers. The use of SWP as litter appears to improve broiler performance and reduce the incidence of footpad problems.

scholarly journals Effects of the Ratio of Dietary Fish Meal to Soybean Meal on the Performance of Broiler Chicks

2021 ◽  
Vol 4 (1) ◽  
pp. 47-53
Author(s):  
Nwe Nwe Htin ◽  
May Phyo Chit
Keyword(s):  
Body Weight ◽  
Soybean Meal ◽  
Fish Meal ◽  
Control Diet ◽  
Point Of View ◽  
Feed Consumption ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
Treatment Groups ◽  
Dietary Fish

A completely randomized design (CRD) was used with a total of 160 day-old commercial broiler chicks which were randomly assigned to four treatment groups with five replicates into 20 pens and brooded. Feed and water were provided ad libitum. From day old chick to 21 day, the broiler chicks were fed Diet 1 (5% fish meal and 25% soybean meal, 1: 5), Diet 2 (3% fish meal and 30% soybean meal, 1: 10) was served as control diet, Diet 3 (2% fish meal and 30% soybean meal, 1: 15) and Diet 4 (1.5% fish meal and 30% soybean meal, 1: 20). From day 22 onwards, the broiler chicks were fed finisher diet, Diet 1 (5% fish meal and 25% soybean meal, 1: 5), Diet 2 (2.6% fish meal and 26% soybean meal, 1: 10, serve as control diet, Diet 3 (1.8% fish meal and 27% soybean meal, 1: 15) and Diet 4 (1.3% fish meal and 26% soybean meal, 1: 20). Weekly performances and mortality are measured. By feeding FS5 diet (5% fish meal and 25% soybean meal), the heavier body weight, increased feed consumption and feed conversion ratio of broiler chicks was observed when compared to that of other treatment groups. Conclusively, it is obvious that the ratio of dietary fish meal to soybean meal 1: 5 (FS5) improved body weight but the lower feed efficiency of this diet should be considered in economical point of view.

scholarly journals PENGARUH BUNGKIL INTI SAWIT FERMENTASI DALAM PAKAN TERHADAP PERTUMBUHAN IKAN MAS ( Cyprinus carpio L.)

2017 ◽  
Vol 9 (1) ◽  
pp. 71-76 ◽  
Author(s):  
M. Amri
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Cyprinus Carpio ◽  
Body Weight Gain ◽  
Palm Kernel ◽  
Feed Consumption ◽  
Feed Conversion ◽  
Good Level ◽  
Feed Cost ◽  
Fermentation Technology

The study effect of Fermented Palm Kernel Cage (FPKC) in feed on growth of Cyprinus carpio L. was done to evaluate the utilization of palm kernel cage increasing the quality by fermentation technology as a feed in ration to Cyprinus carpio L. performance and get a good level in ration. This experiment was set in a Randomized Completely Design with four treatments and four replicates.  Treatments were diets with : A (12% PKC), B (15% FPKC),  C (18% FPKC), and D (21% FPKC). Results of experiment indicated that the feed consumption body weight gain, feed conversion and income over feed cost was in proved by 18% FPKC in the diet.

scholarly journals Effects of Methionine-Cysteine Amino Acid Supplementations in the Aflatoxin B1 Contaminated Diet on Broiler Production Performance

2019 ◽  
Vol 43 (4) ◽  
Author(s):  
Listya Purnamasari ◽  
Ali Agus ◽  
Cuk Tri Noviandi
Keyword(s):  
Body Weight ◽  
Amino Acid ◽  
Aflatoxin B1 ◽  
Interaction Effect ◽  
Broiler Chicken ◽  
Production Performance ◽  
Feed Consumption ◽  
Age Group ◽  
Feed Conversion ◽  
Cysteine Amino Acid

This research aimed to observe the interaction of methionine-cysteine amino acid supplementation to decrease the effect of aflatoxin B1 (AFB1) on diet against production performance of broiler chicken. A number of 240 mixed sex broiler chickens were treated in 9 treatments by factorial design 3 x 3 with methionine-cysteine amino acid (M+C) (75,100, dan 125%) factors and AFB1 levels (0, 200, dan 400 ppb). Variables observed were: Weight gain, feed consumption, and feed conversion ratio (FCR). The results showed that increased AFB1 content in diet from 0 to 400 ppb increased chicken body weight (P <0.05) in each age group. The high body weight was balanced with high feed consumption along with increased nutrient needs, mainly sulfuric amino acid (M+C) as the precursor of glutathione to eliminate toxic through conjugation reactions. The interaction effect was firstly occurred between M + C and AFB1 treatment (P <0.05). Meanwhile increased supplementation of M + C from 75 to 125% caused decreased feed consumption in each age group of chickens, but increased AFB1 levels further increased feed consumption (P<0.05). The interaction effect between the level of M + C and AFB1 contamination in diets on feed consumption were seen in 21-day-old chickens (P<0.05). FCR was also increased (P <0.05) with the reduction of M + C content in diet at 7 days old. The effect of AFB1 on diet and interaction between M + C and AFB1 on chicken FCR in this study was not significant in all age groups. It can be concluded from the current study that supplying methionine-cystine amino acid with 75, 100 and 125% in AFB1 contaminated diet of 0, 200 and 400 ppb improves the performance of broiler chicken production.

scholarly journals The Effect of Replacing Dried Meal Worm with Soybean Meal on Growth Performance and Carcass Characteristics of Broiler Chickens

2021 ◽  
Author(s):  
Navid Naderi Boroojerdi ◽  
Mostafa Rajabzadeh
Keyword(s):  
Growth Performance ◽  
Soybean Meal ◽  
Broiler Chickens ◽  
Relative Weight ◽  
Carcass Characteristics ◽  
Basal Diet ◽  
Control Treatment ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
Significant Difference

Abstract An experiment was conducted on 240 one-day old male (Ross308) chicken to the effect of substitution of dried mealworm (Tenebrio molitor) with soybean meal on growth performance and carcass characteristics broiler chicks. Chicks fed in a completely randomized design with 4 replicate cages (12 birds per cage). Five dietary treatments used: 1- Control treatment: Basal diet based on corn-soybean meal without adding dried mealworm, 2- Replacement of 5% dried mealworm with soybean meal in the base diet, 3- Replacement of 10% dried mealworm with soybean meal in the base diet, 4- Replacement of 15% dried mealworm with soybean meal in the base diet and 5- Replacement of 20% dried mealworm with soybean meal in the base diet. The results of the experiment showed that 3rd and 4th treatments with a substitution of 10 and 15 percent showed a higher mean weight gain and a daily gain, but their feed intake was lower comparing other treatments, and finally, the feed conversion ratio showed a significant decrease with respect to control treatment using these replacement levels. At 21 and 42 days of age, carcass yield and relative weight of the breasts showed significant increases in treatments 3 and 4, and other characteristics of chicken carcasses were not affected by the test treatments. The experiment showed that replacing soybean meal with 10% and 15% worm powder significantly improved the performance of broiler chickens, but no significant difference was found between the two levels.

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