Effects of a semi-intensive raising system on growth performance, carcass traits and meat quality of broiler chicks

Author(s):  
Serafettin Kaya ◽  
Hakan Yildirim

Abstract The present study was carried out to compare the growth performance and carcass yield of broiler chickens reared in semi-intensive and conventional systems (Ross 308, n=120). Chickens were raised in a pen on wooden shavings for 21 days. On day 21 of age, chicks were assigned to 2 treatments (indoor treatment and semi-intensive treatment). The experiment was conducted at until 6 weeks of age. Production system has a significant effect on wing (P less than 0.05) and heart weight (P less than 0.01), but has no any effect on final body weight, hot or cold carcass weight, thigh, breast, back and neck, gizzard, liver and abdominal fat weights (P>0.05).  The final body weight, hot and cold carcass weight, thigh, wings and heart weights were affected by sex of birds (p less than 0.05) while breast, back, liver, gizzard and abdominal fat were not affected by sex (P>0.05). The nutrient level of carcass parts was not influenced by production system or sex (P>0.05). In our study, breast of birds reared under semi-intensive system had significantly lower ‘L’ (P less than 0.05), higher ‘a’ statistically different (P less than 0.01); while ‘b’ value was significantly (P less than 0.01) higher in skin of semi-intensive reared birds

2020 ◽  
Vol 23 (1) ◽  
pp. 12-19
Author(s):  
N. Mincheva

Production and slaughter traits of autosexing broiler combination reared either sex separate or mixed were investigated. A total of 180 day-old feather sexed broiler chicks were divided into three groups (n=60)- two sex separate (male and female) and one mixed (1:1), each with two replications of 30 birds. Body weight and feed intake were followed on a weekly basis; the average daily feed intake and feed conversion were calculated. By the end of the experiment (day 49), slaughter analysis was performed on 20 birds: 5 broilers from each of sex separate groups, 5 males and 5 females from the mixed group with live weight close to the group average. The carcass weight (g), weights of carcass cuts, giblets and abdominal fat were determined. Slaughter yield and body parts ratios were calculated. The results demonstrated that sex separate rearing of broilers contributed to higher final body weight - by 6.9 % in females (P<0.05) and by 2.9 % in males (P>0.05), but had no effect on feed conversion. Sex separate rearing resulted in heavier carcasses by 3.6% (P<0.05) and more uniform weight as compared to mixed rearing. The sex effect on body weight and slaughter traits was more considerable in males with respect to carcass, thigh, back, wings and giblets weights (P<0.05) but not abdominal fat whose weight was higher in female broilers (P<0.05). Better uniformity of final body weight of broilers reared sex separate and the reduced variation in carcass weight and weight of cuts (breast and thigh) would facilitate slaughterhouse processing and would contribute to the realization of produce and meeting distribution network demands


2020 ◽  
Vol 45 (2) ◽  
Author(s):  
D. N. Onunkwo ◽  
C. N. Okocha

This study was carried out to evaluate the growth performance, cut parts characteristics and organ proportions of broiler chickens fed single straight diet fortified with fish meal. The basal diet was augmented with fishmeal to take the crude protein from 22% to 28%. One hundred and twenty day-old broiler chicks were used in this study which lasted for six weeks. The birds were randomly distributed into 4 treatments (T , T , T and T ) that were replicated hree times with 10 birds per replicate. The replicate T , T , T and T had different inclusion ate of crude protein which were 22%, 24%, 26% and 28% all with an energy level of 2900kcal/kg. Parameters measured were the initial body weight, final body weight, values calculated include average daily feed intake, average body weight gain and feed conversion ratio. There were no significant differences observed in all the growth parameters measured. No significant differences (p>0.05) were observed in the cut parts characteristics and internal organ proportions measured. Taking all the parameters measured into consideration it suggests that in this single straight diet for broiler chicken, there were no adverse effects on their growth performance. Therefore, the four treatment diets were good enough to give body weight in the range of 2-2.5kg that resulted in dressed carcass weight of 1.35-1.5kg, a range of weight that the fast food lines desire.


Author(s):  
Theresia Nur Indah Koni ◽  
Tri Anggarini Yuniwaty Foenay ◽  
Hieronymus Yohanes Chrysostomus

Abstract Amorphophallus companulatus (AC) is a plant from the Araceae family that contains high metabolizable energy and an alternative feedstuff for livestock. This study aimed to investigate the effect of feeding diet containing AC on slaughter weight, carcass weight, and abdominal fat of broiler chickens. The feeding trial lasted for 35 days. For the sample, 112 broiler chicks, all a day old (DOC) were used. The research had 4 treatment groups and 4 replications with 7 birds per replication. The four treatments were P0 (Control ration without AC); P1 (rations containing 5% of AC); P2 (rations containing 10% of AC); P3 (rations containing 15% AC). Slaughter weight, carcass weight, and abdominal fat weight data were analyzed by variance analysis and followed by Duncan's multiple range test with a confidence level of 0.05. The addition of AC tubers affected the slaughter weight, carcass weight, and abdominal fat weight of broiler chickens. The slaughter and carcass weight in chickens fed with the control ration was significantly (P <0.05) higher than the chicken fed with rations containing AC. The abdominal fat weight was significantly (P <0.05) higher in chickens fed with control rations compared to those fed with AC rations. In conclusion, AC tuber meal in the ration can reduce the slaughter weight, carcass weight, and abdominal fat weight of broiler chickens. Keywords: Abdominal fat; Amorphophallus companulatus; Broiler; Carcass weight; Final body weight.   Abstrak Amorphophallus companulatus (AC) merupakan Araceae yang mengandung energi metabolisme yang tinggi dan sebagai bahan pakan alternatif bagi ternak. Penelitian ini bertujuan untuk mengkaji pengaruh penggunaan AC dalam ransum terhadap bobot potong, berat karkas, dan lemak abdominal ayam broiler. Penelitian ini dilakukan selama 35 hari. Seratus dua belas ekor ayam broiler umur sehari digunakan dalam penelitian. Ada 4 kelompok perlakuan dengan 4 ulangan masing-masing 7 ekor ayam per ulangan. Keempat perlakuan tersebut adalah P0 (Ransum kontrol tanpa AC); P1(ransum yang mengandung 5% AC); P2 (ransum yang mengandung 10% AC); P3 (ransum yang mengandung 15% AC).  Data berat potong, berat karkas dan berat lemak abdominal dianalisis dengan analisis varians dan dilanjutkan dengan uji jarak berganda Duncan pada tingkat kepercayaan 0,05. Pemberian umbi AC berpengaruh terhadap berat badan akhir, berat karkas dan berat lemak abdominal ayam broiler. Berat badan akhir, berat karkas pada ayam yang diberi ransum kontrol secara nyata (P <0,05) lebih tinggi daripada ayam yang diberi ransum mengandung AC. Bobot lemak abdominal secara nyata (P<0,05) lebih tinggi pada ayam yang diberi ransum kontrol dibandingkan yang diberi ransum AC. Kesimpulannya, tepung umbi AC dalam ransum dapat mengurangi berat badan akhir, berat karkas dan lemak abdominal ayam broiler. Kata kunci: Lemak abdominal; Amorphophallus companulatus; Broiler; Berat karkas; Berat badan akhir.


2020 ◽  
Vol 46 (5) ◽  
pp. 143-148
Author(s):  
F. U. Udeh ◽  
S. U. Ilo ◽  
V. C. Udeh

This study was conducted to evaluate the growth performance and haematological profiles of broiler chickens served dietary inclusion of probiotics (Saccharomyces cereviasae) and enzyme (Bio-enzyme). One hundred and twenty, one day-old broiler chicks of Agrited strain were used for the study. The birds were randomly allotted to four dietary treatments. Each treatment contained 30 birds replicated three times to contain 10 birds per replicate in a completely randomized design experiment. The four dietary treatments were T1 Control (no probiotics and enzyme), T2 (had both probiotics and enzyme), T3 (probiotics only) and T4 (Enzyme only). The birds were given feed and water ad-libitum and the quantity of feed consumed each day was determined through weigh back techniques while the birds were weighed weekly throughout the experimental period. The experiment lasted eight weeks. The results showed significant (p<0.05) differences in the final body weight, total weight gain, average daily weight gain, total feed intake, average daily feed intake and feed conversion ratio. Chickens on treatment 2 had the highest final body weight of 3011.57g and performed better than chickens in other dietary treatments. Similar trend was observed in the haematological profile as treatment two were highest in value across the treatments and parameters measured except in packed cell volume where the highest value (36.33 %) was recorded in treatment 4. It was concluded from the study that treatment two which contained both probiotics and enzyme performed better and thus, recommended to farmers for broiler production.


2014 ◽  
Vol 30 (3) ◽  
pp. 457-471 ◽  
Author(s):  
R.A. Mohamed ◽  
M.M. Eltholth ◽  
N.R. El-Saidy

The aim of this study was to evaluate the effect of monochromatic light on broiler performance, fear and stress response during pre-slaughter handling and transportation. Two thousand unsexed one-day old Cobb broiler chicks were used. At day 34, two hundreds broilers of similar live body weight were selected and divided into two equal groups (2 group x 5 replicates). Broilers were reared under white light (WL) from 0-34 day. From 35 to 49 day, the first group was reared under WL and the second group under blue light (BL). Final body weight (FBW), tonic immobility reactions (TI), respiratory rate (RR), heterophils to lymphocytes (H/L) ratio and interlukien-1? (IL-1?) were estimated at day 49 before and after transportation. After transportation, weight of internal organs (liver, spleen, heart and bursa of fabricius) as a percentage of FBW was calculated. Results showed that there was a significant (P<0.05) increase in FBW and reduced weight loss due to transportation in broilers reared under BL. In broilers reared under BL: TI duration, RR, H/L ratio, IL-1? and weight of internal organs (except the heart) were significantly (P < 0.05) lower. The interaction effect of light and transportation on TI duration, RR, lymphocytes, H/L ratio and IL-1? were significant (P < 0.05). Therefore, it is suggested that BL may be a good tool for improving welfare and mitigating stress not only in pre-slaughter handling but also during transportation of broilers.


2017 ◽  
Vol 17 (1) ◽  
pp. 31-37
Author(s):  
Ucop Haroen

ABSTRAK. Tujuan penelitian ini adalah mengetahui pengaruh tingkat penggunaan tepung limbah jus jeruk (Citrus sinensis) dalam ransum terhadap kualitas karkas (bobot potong, bobot karkas, persentase karkas, kolesterol karkas, bobot lemak abdomen) dan konsumsi ransum ayam broiler. Materi yang digunakan adalah ayam broiler umur satu hari unsex, strain Arbor Acres CP 707 sebanyak 200 ekor. Rancangan yang digunakan adalah Rancangan Acak Lengkap terdiri 5 perlakuan dan 4 ulangan masing-masing ulangan terdiri dari 10 ekor ayam. Perlakuan terdiri dari P0 = Ransum mengandung 0% tepung limbah jus jeruk (kontrol positif); P1 = Ransum mengandung 0% tepung limbah jus dengan penambahan basitrasin 0,02% (kontrol negatif); P2 = jeruk mengandung 5% tepung limbah jus jeruk; P3 = Ransum mengandung 10% tepung limbah jus jeruk; P4 = Ransum 15% tepung limbah jus jeruk. Variabel yang diamati adalah kualitas karkas (bobot potong, bobot karkas, persentase karkas, kolesterol karkas, lemak abdomen) dan konsumsi ransum. Hasil penelitian menunjukkan bahwa penggunaan tepung limbah jus jeruk dalam ransum nyata (P0,05) menurunkan konsumsi ransum, bobot potong, bobot karkas, kolesterol karkas dan bobot lemak abdomen, tetapi penggunaan tepung limbah jus jeruk dalam ransum tidak mempengaruhi persentase karkas. Kesimpulan yang dapat diambil dari penelitian ini adalah penggunaan tepung limbah jus jeruk (Citrus sinensis) dapat digunakan sampai taraf 5% dalam ransum ayam broiler. (The use of orange (citrus sinensis) juice by products in the ration on carcass quality of broiler chickens) ABSTRACT. This study was conducted to evaluate the effect of orange (Citrus sinensis) juice by products in rations on (carcass quality) ; weight of slaughter, carcass weight, carcasspercentages, abdominal fat weight and feed intake of broiler chicks. A total of two hundred unsexed 1 d-old chicks (Arbor Acres CP-707) used. The design used was Completely Randomized Design consisting of 5 treatments and 4 replications of each replication consisting of 10 chickens. Feed treatment consisted of P0 = 0% orange juice waste flour (positive control); P1 = 0% waste juice flour with 0.02% basitratin addition (negative control); P2 = 5% orange juice flour waste; P3 = 10% orange juice flour waste; P4 = 15% orange juice flour waste. The variables observed were carcass quality (cut weight, carcass weight, carcass percentage, carcass cholesterol, abdominal fat) and ration consumption..The results showed that the use of orange juice flour in the ration significantly influenced (P 0.05) in reducing the consumption of ration, cut weight, carcass weight, carcass cholesterol and abdominal fat weight, but the use of orange juice waste flour in the ration did not affect the percentage of carcass . As a conclusion is the use of orange juice waste flour (Citrus sinensis) can be used to a level of 5% in broiler chicken rations.


2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Sanjeev Wasti ◽  
Nirvay Sah ◽  
Amit K. Singh ◽  
Chin N. Lee ◽  
Rajesh Jha ◽  
...  

Abstract Background Heat stress is a significant problem in the poultry industry, causing a severe economic loss due to its detrimental effects on chickens’ health and performance. Dried plum (DP) is a good source of minerals, vitamins, antioxidants, and phenolic compounds. Studies have suggested that DP has several health benefits, such as maintaining the body’s redox system, immune status, and calcium hemostasis. Based on the health benefits of DP, we hypothesized that the dietary supplementation of DP would alleviate the detrimental effects of heat stress on broiler chickens. Results To test the hypothesis, day-old broiler chicks (n = 72) were randomly allocated to three treatment groups (n = 24/group): no heat stress (NHS), heat stress (HS), and heat stress with dried plum (HS + DP), and reared under standard conditions. The inclusion of 2.5% DP in the feed of the HS + DP group was made during the treatment period, while birds in other groups were provided with a standard finisher diet. After 21 days, birds in the HS and HS + DP groups were exposed to cyclic heat stress conditions (33 °C for 8 h during daytime) for 3 weeks, while those in the NHS group were reared under normal conditions (22–24 °C). Weekly body weight and feed intake were recorded to calculate the average daily gain (ADG), average daily feed intake (ADFI), and feed conversion ratio (FCR). Heat stress significantly decreased the final body weight, ADG, ADFI, and increased FCR compared to the NHS group, whereas dietary supplementation of DP significantly improved these growth performance parameters compared to the HS group. Furthermore, supplementation of DP significantly increased the expression of heat shock protein-related genes (HSF1, HSF3, HSP70, and HSP90), antioxidant-related genes (SOD1, SOD2, GPX1, GPX3, PRDX1, and TXN), tight junction-related genes (CLDN1, and OCLN), and immune-related genes (IL4, MUC2) in the ileum as compared to the HS group. The microbiota analysis showed significant enrichment of Bacillales, Christensenellaceae, Bacillaceae, Peptostreptococcaceae, and Anaerotruncus in heat-stressed birds supplemented with DP as compared to the HS group. Further, DP supplementation also significantly increased the concentration of acetate, propionate, and total VFA in the cecal digesta of the HS + DP group as compared to the HS group. Conclusion These findings suggest that DP supplementation effectively improved the growth performances and gut health parameters in the heat-stressed birds. Thus, dried plum can be a potential feed supplement to mitigate heat stress in broiler chickens.


Author(s):  
Nazim Ali ◽  
Mohammad Akram ◽  
Ahmad Fahim ◽  
Balvir Singh ◽  
Mohammad Imran

The study investigated the effect of supplementation of Vitamin E, Zn and Cr on growth performance and hematological characteristics of broiler chickens. The 240 day old Cobb 400 chicks were randomly distributed in eight groups consisting of 30 chicks in each. These chicks were kept on deep litter houses comprising of wood shavings. The supplementation of Vitamin E, zinc and chromium either individually or in combination improved the feed conversion ratio and body weight gain in broiler chicks. The body weight of broiler chickens at different age from day old to the 6th week were significantly different among treatments. The highest body weight was recorded in T8 groups. Heamoglobin, red blood corpuscles and white blood cells levels increased whereas heterophil: lymphocyte ratio statistically decreased with vitamin E, zinc or chromium supplemented groups either individually or in combinations.


Animals ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1256 ◽  
Author(s):  
Amr Abd El-Wahab ◽  
Jan-Philip Kriewitz ◽  
Julia Hankel ◽  
Bussarakam Chuppava ◽  
Christine Ratert ◽  
...  

The aim of the present study was to evaluate the effects of feed particle size and flooring designs on organ traits, performance and pododermatitis in broilers. A total of 480 broilers (Ross 308) of both sexes were randomly assigned to two feeding groups (finely or coarsely ground pelleted diets; with addition of 5% to 10% intact wheat in coarsely diets) and four different housing systems (litter; litter with floor heating; partially or fully slatted floor) with three subgroups each. A coarse diet increased the final gizzard and pancreas weights (p < 0.001) while decreasing the risk of Isthmus gastrici dilatation compared to a fine diet (p < 0.001). Broilers fed a coarse diet displayed an increased final body weight (p = 0.023) and led to a favourable feed conversion ratio. Final body weight was the highest (p < 0.001) for birds housed on partially or fully slatted floor. Housing birds on litter with floor heating showed the lowest pododermatitis scoring (p < 0.001). It seems to be favourable to use coarse diets for organ development, whereas slatted floors seem to foster enlargement of the Isthmus gastrici. Increasing growth performance was possible both when using coarse diets or slatted floors.


2021 ◽  
Vol 3 (4) ◽  
pp. 37-42
Author(s):  
I. Y. Gang ◽  
F. B. P. Abang ◽  
D. T. Shaahu

A nutrient retention and growth performance study were conducted with broiler chicks to evaluate the effect of different duration of fermented baobab seed meal (FBSM). Fermented baobab (Adansonia digitata) seeds were ground and incorporated in the diets at 12% dietary level. Diet 1 (control diet) had no BSM. Diet 2 had unfermented BSM. Diets 3, 4 and 5 had baobab seed meal (BSM) fermented for 48 h, 72 h and 96 h, respectively. Two hundred and forty (240) Arbor Acre chicks at one-week old were weighed and distributed to these dietary treatments. The five (5) treatments were replicated four (4) times in a completely randomized design, with 12 birds per replicate (48 per treatment). The diets did not significantly (p>0.05) influenced Feed intake, final body weight, feed conversion ratio and protein intake across treatments. The body weight gain and protein efficiency ratio of the chicks fed 96 h fermented BSM were not significantly (p>0.05) different with those fed control diet but were significantly (p<0.05) higher than chicks of other treatment groups. Starter broiler chicks fed T4 had significantly (p<0.05) higher nutrient digestibility parameters across treatments, except for EE and CF that were highly digested by chicks fed T3 and T1 respectively. In conclusion the performance of broiler chicks fed 96 h FBSM competed favorably with those fed control diet, whereas, chicks placed on 72 h FBSM recorded better result of nutrient digestibility.


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