scholarly journals The effect of genotype and age on the carcass quality of broilers and males of the laying hybrids

2008 ◽  
Vol 56 (4) ◽  
pp. 121-126
Author(s):  
Martina Lichovníková ◽  
Alžbeta Jarošová
Keyword(s):  
Total Body Weight ◽  
Abdominal Fat ◽  
Carcass Weight ◽  
Meat Production ◽  
Carcass Quality ◽  
Breast Meat ◽  
Leg Muscles ◽  
Total Body ◽  
Breast Weight

In the study the carcass quality of fast growing broilers (F) and slow growing layer males (S) was compared. The effect of age on the carcass quality of S (S1, S2) was also evaluated. The weights of the carcasses were as follows: F 1110 g, S at 90 days of age 1116 g (S1) and S at the age of 132 days 1878 g (S2). Despite similar carcass weight in F and S1, the weight of the breast, and it’s proportion to the total body weight was significantly higher (P < 0.001) in F (265 g and 23.9% vs. S1 174 g and 15.6%). Continued fattening of the layer males resulted in increased breast weight (S2 276 g, P < 0.001) but not in breast proportion (S2 14.7%).The weight of the legs was significantly higher (P < 0.001) in S1 in comparison with F, but it was due to the heavier weight of the leg bones in S1 (P < 0.001). There was no difference neither in the weight of the leg muscles, nor of the leg proportions between F and S1. The proportion of the leg muscles increased significantly (P < 0.05) in S2 (25.6%) in comparison with S1 (24.1%). The content of abdominal fat, fat in the breast and fat in the leg muscles was significantly lower (P < 0.01, P < 0.01, P < 0.05, respectively) in the layer males S1 in comparison with the F broilers. The proportion of abdominal fat was 1.79% in F, and 0.54% in S1. The content of the breast fat was 1.24% in F and 0.56% in S1. The proportion of fat in the leg muscles was 8.45% in F and 2.78% in S1. As the birds became older, the content of the fat increased: the abdominal fat in S2 – 1.38% (P < 0.01), the breast fat in S2 – 0.96% (P < 0.01) and the leg muscles fat in S2 – 3.94% (P < 0.05). There was significantly lower (P < 0.001) content of dry matter in S1 than in F both in the breast and in the leg muscles.At the same carcass weight as the broilers, the layer males had a lower proportion of breast meat and also a lower content of abdominal fat, fat in the breast and fat in the leg muscles. The proportion of the leg muscles was comparable between the two groups. Concerning meat production, the quality of the carcasses of the layer males improved with age. Comparing the F carcasses with weight at 1110 g with the S2 carcass with weight of 1878 g, the weigh of the breast was almost the same, the weight of the leg muscles was higher in S2, and mainly the content of the fat in leg muscles was lower. The content of the abdominal fat and the breast fat was similar in both groups.

scholarly journals Effect of Dietary Agaricus bisporus and Auricularia auricula Crude Extract Suplementation on Carcass Quality of Broiler

2020 ◽  
Vol 15 (3) ◽  
pp. 183-193
Author(s):  
Muhammad Halim Natsir ◽  
Osfar Sjofjan ◽  
Reynaldy Hadi Ardyansyah
Keyword(s):  
Crude Extract ◽  
Agaricus Bisporus ◽  
Live Weight ◽  
Abdominal Fat ◽  
Carcass Quality ◽  
Breast Meat ◽  
Auricularia Auricula ◽  
Methanolic Extracts ◽  
Zinc Bacitracin

This research was conducted to examine Agaricus bisporus and Auricularia auricula crude extract using different solvents (water, ethanol, and methanol) on infrared spectroscopy absorbance during extraction and the impact on broiler carcass. Agaricus bisporus and Auricularia auricula crude extracts were scanned using fourier transform infrared (FT-IR) spectroscopy. Each mushroom crude extract was chosen and applied into broiler diets as feed additive at 0%, 0.4%, 0.8%, 1.2%, and compared zinc bacitracin inclusion. Variable measured were final live weight, carcass yield, breast meat yield, and abdominal fat yield of broiler. Two hundred and forty day-old chicks were randomly allocated into eight dietary treatments, each treatment was replicated three times with ten chicks for each pen. Diets and water were offered ad libitum. Methanolic extract showed monosaccharide absorption peak in fingerprint region at wavelength 890 cm-1, 930 cm-1, 1050 cm-1, 1150 cm-1 which indicates alpha and beta linkage than the others solvent. Even so, dietary inclusion of methanolic extracts of Agaricus bisporus and Auricularia auricula did not show any effect on final live weight and the yiled of carcass, breast meat and abdominal fat of broiler. In conclusion, methanolic extraction is effective to extract monosaccharides with α- and β- linkages from Agaricus bisporus and Auricularia auricula, while the dietary inclusion of methanolic extracts of both edible mushroom and zinc bacitracin has no effect on carcass quality of broilerin broiler diets did not show differences between treatments as well as zinc bacitracin group.

scholarly journals Changes in the content of edible and non-edible components and distribution of tissue components in cockerels and capons

2018 ◽  
Vol 16 (1) ◽  
pp. e0602 ◽  
Author(s):  
Magdalena Zawacka ◽  
Michal Gesek ◽  
Danuta Michalik ◽  
Daria Murawska
Keyword(s):  
Age Differences ◽  
Total Body Weight ◽  
Abdominal Fat ◽  
Optimal Distribution ◽  
Tissue Composition ◽  
Lean Meat ◽  
Leg Muscles ◽  
Meat Content ◽  
Maximum Period ◽  
Total Body

The aim of this study was to determine the effects of castration and age on the content of edible and non-edible components, and the distribution of tissue components in the carcasses of cockerels and capons. The study was conducted on 200 birds (Green-legged Partridge), divided into two sex categories (with 5 replications per group and 20 birds per replication), raised to 28 wk of age. At 8 wk of age, 100 birds were surgically castrated and afterwards at 12 wk of age and at four-wk intervals, 10 intact cockerels and 10 capons were selected randomly and slaughtered. Cockerels, compared with capons, were characterized by a higher proportion of edible components at 24 and 28 wk of age, and a more desirable carcass tissue composition due to a higher content of lean meat in total body weight (BW). Capons had higher abdominal fat content than cockerels, which resulted in a higher percentage of non-edible components in their BW at 24 and 28 wk of age. Differences in the distribution of lean meat in the carcass were noted from 20 wk of age in both castrated and intact birds. The content of breast muscles increased in capons, and the content of leg muscles (thigh and drumstick) increased in cockerels. The results of this study indicate that in view of the optimal lean meat content of the carcass and the optimal distribution of major tissue components, Green-legged Partridge capons should be fattened for a maximum period of 24 wk.

scholarly journals THE UTILIZATION OF BAY LEAF (SyzygiumpolyanthumWalp) FLOUR IN FEED ON CARCASS QUALITY, MICROFLORA INSTESTINE OF BROILER

2020 ◽  
Vol 6 (11) ◽  
pp. 1-9
Author(s):  
Sjofjan O. ◽  
Adli D.N. ◽  
Hanani P.K. ◽  
Sulistiyaningrum D.
Keyword(s):  
Escherichia Coli ◽  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Abdominal Fat ◽  
Carcass Quality ◽  
Breast Meat ◽  
Leaf Meal ◽  
Randomized Design ◽  
Significant Difference

The research purpose was to determine the utilization of bay meal (SyzygiumpolyanthumWalp) microflora, and carcass quality of broiler. The research method was used completely randomized design with 5 treatments and 4 replicates. The materials used for this research were 80 unsex 15 days old with average body weight 307.725±22.17 g/head. The treatments used for research were dietary with T0 (basal feed), T1 (basal feed + 1% bay leaf meal), T2 (basal feed + 2% bay leaf meal), T3 (basal feed + 3% bay leaf meal), T4 (basal feed + 4% bay leaf meal). The parameters observed were intestinal characteristic bacteria (lactic acid bacteria, Escherichia coli, and Salmonella sp.) and (carcass percentage, abdominal fat, organ visceral weight, breast meat cholesterol). The data analysis was the analysis of variance (anova) and continued by Duncan Multiple Range Test. The results showed that using bay leaf effect as in feed has significant difference (P<0.05) on lactic acid bacteria and Escherichia coli and significantly different (P<0.01) (breast meat cholesterol) but didn’t significant difference (P>0.05) on carcass percentage, abdominal fat and organ visceral weight. The addition of 4% bay leaf gave the best effect on microflora, and breast cholesterol quality of broiler.

scholarly journals Kinerja Produksi dan Kualitas Karkas Itik yang Diberi Ransum Mengandung Ampas Sagu

2018 ◽  
Vol 7 (1) ◽  
pp. 1-8
Author(s):  
Sylvia Ch. H. Hehanussa ◽  
Tabita N Ralahalu ◽  
Christine C E Latupeirissa
Keyword(s):  
Weight Gain ◽  
Abdominal Fat ◽  
Metabolizable Energy ◽  
Carcass Weight ◽  
Feed Consumption ◽  
Carcass Quality ◽  
Feed Conversion ◽  
Fat Percentage ◽  
Sago Waste

The aim of the study was to determine the effect sago waste in the rations on performance and carcass quality of duck as meat producer. The treatments of this experiment were R0 (0% sago waste/control diet), R1 (5% sago waste), R2 (10% sago waste), and R3 (15% sago waste). The experimental died contained 16% crude protein and 2900 kcal /kg metabolizable energy. Ducks used in this experiment was 6 weeks old male of ducks Mojosari and Pekin cross breed. The research design use was a complete Randomized Design using 4 feeding treatment, 5 replications, and 3 ducks per replication pens. The parameters measured were: feed intake, weight gain, feed conversion, carcass weight, carcass percentage and abdominal fat percentage. The results showed that the used of sago waste had no significant effect on feed consumption, weight gain, feed conversion, carcass weight, carcass and abdominal fat percentage. It can be concluded that used of sago waste up to 20% has no negative effects on performance and carcass quality of ducks. Keywords: abdominal fat, carcass quality, duck, sago waste   ABSTRAK Penelitian ini bertujuan untuk mengkaji pengaruh penggunaan ampas sagu dalam ransum terhadap kinerja produksi dan kualitas karkas itik sebagai penghasil daging. Perlakuan pakan yang dicobakan dalam penelitian ini adalah R0 (tanpa ampas sagu), R1 (ampas sagu 5%), R2 (ampas sagu 10%), dan R3 (ampas sagu 15%). Ransum disusun mengandung protein kasar 16% dan energi metabolis 2900 kkal/kg. Itik yang digunakan adalah itik jantan persilangan Mojosari dan Pekin berumur 6 minggu. Rancangan penelitian yang digunakan adalah rancangan acak lengkap pola searah dengan 4 perlakuan pakan dengan 5 ulangan, dan 3 ekor itik untuk tiap ulangan. Parameter yang diamati adalah: konsumsi ransum, pertambahan berat badan, konversi ransum, berat karkas, persentase karkas dan persentase lemak abdominal. Hasil penelitian menunjukkan bahwa penggunaan ampas sagu tidak berpengaruh signifikan terhadap konsumsi ransum, pertambahan bobot badan, konversi ransum, berat karkas, persentase karkas dan lemak abdominal. Dengan demikian dapat disimpulkan bahwa penggunaan ampas sagu sampai taraf 20% tidak berpengaruh negatif terhadap kinerja produksi dan kualitas karkas itik. Kata kunci: ampas sagu, itik, kualitas karkas, lemak abdominal

scholarly journals PENGOLAHAN LIMBAH KULIT KOPI (Coffea sp) SECARA SEDERHANA UNTUK MENGGANTIKAN SEBAGIAN JAGUNG DAN PENGARUHNYA TERHADAP KUALITAS KARKAS AYAM PEDAGING

ZOOTEC ◽  
2020 ◽  
Vol 40 (1) ◽  
pp. 271
Author(s):  
Yunita Garing ◽  
Z. Poli ◽  
F.J. Nangoy ◽  
P.R.R.I. Montong
Keyword(s):  
Body Weight ◽  
Waste Product ◽  
Abdominal Fat ◽  
Carcass Weight ◽  
Carcass Quality ◽  
Final Body Weight ◽  
Weight Percentage ◽  
Coffee Husk ◽  
Simple Processing

CARCASS QUALITY OF BROILER FED RATION CONTAINING COFFEE (Coffea sp) HUSK WASTE PRODUCT TREATED BY SIMPLE PROCESSING AND SUBSTITUTING PARTS OF CORN WITH DIFFERENT LEVELS. The aim of this research  was to know coffee husk waste product treated by simple processing and substituting parts of corn on body weight, carcass percentage and weight of abdominal fat Study was applied at Faculty of Animal Science, Sam Ratulangi University during 35 days. Total of 144 day old chick unsexed broilers, strain of CP 707, involving 36 experimental units of battery pens were used in this study. Each unit of pen was filled 4 birds under completely randomized design on factorial patter of 3x4. Factor A was focused on three processing treatments including coffee husk heated under sun light (A1), coffee husk immersed in the water (A2), and coffee husk boiled under water (A3). Factor B was focused on four treatments of substitution levels including ration containing corn without coffee husk substitution (B0), ration containing corn substituted with 25% coffee husk (B1), ration  containing corn substituted with 50% coffee husk (B2), ration  containing corn substituted with 75% coffee husk (B3). Variables observed were including final body weight, carcass weight percentage and abdominal fat weight. Analysis of variance showed that interaction of processing treatments did not affect significantly on final body weight, carcass weight percentage and abdominal fat weight. This study showed that utilization of coffee husk waste product by above simple processing could substitute part of corn in ration of 25% - 75% producing high carcass quality of broiler. Key word: Coffee husk by product, corn, broiler carcass percentage

An evaluation of beef carcass quality 2. Influence of variation in grazing intensity and the level of barley supplementation with silage on the carcass and meat quality of Friesian steers

1972 ◽  
Vol 15 (3) ◽  
pp. 229-237
Author(s):  
C. E. Hinks ◽  
J. H. D. Prescott
Keyword(s):  
Meat Quality ◽  
Compensatory Growth ◽  
Live Weight ◽  
Grazing Intensity ◽  
Carcass Composition ◽  
Carcass Weight ◽  
Eating Quality ◽  
Winter Period ◽  
Carcass Quality

SUMMARYTwo experiments concerning the effects, on the carcass and meat characteristics of 18-months-old Friesian steers, of variation in grazing intensity and the level of barley feeding with silage are reported.Groups of 12 steers were grazed at different intensities over 5-month grazing periods, such that live-weight differences of 38 kg and 16 kg were recorded at housing. No compensatory growth was recorded during the subsequent winter feeding period.Whilst the grazing treatments had little effect on carcass or meat quality, higher levels of barley feeding with silage over the winter period (710 v. 410 kg/steer) had significant effects on live-weight gain, and increased carcass weight by 21 kg at slaughter. The higher yield of carcass weight was reflected in significant differences in carcass composition, joint proportions and retail cut-out value. Sixty per cent of the carcass weight difference was removed as trim fat. Differences in carcass fatness were not associated with any differences in eating quality.

Castration age and growth, meat production and meat quality of Nellore male cattle

2020 ◽  
Vol 60 (5) ◽  
pp. 725
Author(s):  
R. J. Anaruma ◽  
L. G. Reis ◽  
P. E. de Felício ◽  
S. B. Pflanzer ◽  
S. Rossi ◽  
...  
Keyword(s):  
Meat Quality ◽  
Average Daily Gain ◽  
Carcass Weight ◽  
Age And Growth ◽  
Meat Production ◽  
Quality Traits ◽  
Muscle Area ◽  
Sensory Property ◽  
Meat Quality Traits

Castration in beef cattle production has been proposed to reduce sexual and aggressive behaviour, increase carcass fat deposition, and improve meat quality traits, such as tenderness and juiciness. The aim of the present study was to evaluate the effects of the age of castration on performance, subprimal yield and meat quality of Nellore cattle raised on a pasture system. A total of 24 Nellore males were raised in a grass-fed system with Brachiaria brizantha since birth until slaughter (at 30 months old). Three treatments were assigned: castration at weaning (CW); castration at 20 months old (C20); and intact bulls (NoC). Males were weighed, and muscle and fat thickness were periodically evaluated by ultrasonography. The cold carcass weight, dressing and carcass pH (pH 24), and subprimal cut weights were recorded after 24 h of chilling. Samples of Longissimus lumborum (LL) were taken to measure meat quality traits. Animals that were castrated at weaning had lower bodyweight after 10 months of age with no changes in the supplement intakes, average daily gain, hot carcass weight and cold carcass weight compared with NoC. Intact males had greater cooking losses and carcass yield compared with others, with no differences for LL pH 24 according to the treatments. The castration did not change the LL muscle area, but decreased total forequarter, chunk, shoulder and eye of round weights, and increased the back fat over LL and rump fat. Animals castrated at weaning had higher marbling compared with others. In addition, regardless of age, castration improved tenderness, increased LL total lipids and decreased moisture compared with NoC. For sensory property, steers castrated at 20 months of age had lower juiciness, and NoC had a greater global sensory property compared with steers castrated at 20 months old. In conclusion, steers castrated at weaning had lower growth rate, final bodyweight and meat production compared with intact males. However, when castration was performed at 20 months, animals did not differ in most cases from castration at weaning and NoC. Tenderness was improved by castration, but sensory traits did not differ between groups.

scholarly journals Meat quality of poulards obtained from three conserved breeds of hens

2018 ◽  
Vol 18 (1) ◽  
pp. 261-280 ◽  
Author(s):  
Joanna Obrzut ◽  
Józefa Krawczyk ◽  
Jolanta Calik ◽  
Sylwester Świątkiewicz ◽  
Mariusz Pietras ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Body Weight ◽  
Meat Quality ◽  
Rhode Island ◽  
Saturated Fatty Acids ◽  
Lower Content ◽  
Breast Meat ◽  
Leg Muscles ◽  
Estradiol Levels

Abstract The aim of the study was to determine the effect of genotype (breed/line) and spaying of pullets on body weight, estradiol level, carcass and meat quality. Subjects were Rhode Island Red (R-11), Yellowleg Partridge (Ż-33) and Sussex hens (S-66), 100 birds per line, which were divided into 2 groups, each having 50 pullets and 50 poulards. Spaying was performed at 10 wk of age, under local anesthesia by a veterinarian. The present study showed that blood estradiol levels in poulards were much lower than in pullets regardless of genotype. Poulards showed higher body weight and their carcasses higher lightness and yellowness. In the sensory evaluation, poulard breast meat was more tasty and leg meat also more juicy and tender compared to pullet meat. Among the three conserved breeds, Rhode Island Red (R-11) and Yellowleg Partridge (Ż-33) hens are the best starting material for poulard production. Their carcasses showed good muscling and intense yellowness desirable to the consumers. R-11 birds achieved highest body weight. Spaying of pullets had no significant effect on the profile of fatty acids, but greater and statistically significant differences in this regard were found between hen lines. Compared to S-66 birds, breast muscles of R-11 and Ż-33 birds contained more polyunsaturated fatty acids (PUFA). The breast and leg muscles of these birds had a lower content of saturated fatty acids (SFA ).

scholarly journals The Effect of Corn Substitution with Palm Kernel Meal Treated by Enzyme on Production Performance and Carcass Quality of Broiler

2018 ◽  
Vol 42 (2) ◽  
Author(s):  
Muhammad Halim Natsir ◽  
Irfan Djunaidi ◽  
Osfar Sjofjan ◽  
Antonius Suwanto ◽  
Esti Puspitasari ◽  
...  
Keyword(s):  
Body Weight ◽  
Feed Intake ◽  
Palm Kernel ◽  
Abdominal Fat ◽  
Production Performance ◽  
Carcass Quality ◽  
Significant Difference ◽  
Kernel Meal ◽  
Palm Kernel Meal

The research was aimed to evaluate the effects of substitution level of corn with palm kernel meal (PKM) untreated and palm kernel meal (PKM) treated by enzyme on production performance and carcass quality of broilers. The method used in this research was experiment using nested of completely randomized design with 2 factors, the main factor was type of palm kernel meal factors consisting of PKM without enzyme (B1) and PKM by mannanase enzyme (B2), and substitution corn level L0 (without substitution), L1 (12.5%), L2 (25%), L3 (37.5%) and L4 (50%). The different among the treatments were tested by Duncan’s multiple range test. The results showed that corn substitution with PKM untreated and PKM treated by enzymes was significantly effect (P<0.01) on feed conversion ratio (FCR), tenderness, meat cholesterol of broilers and income over feed cost (IOFC) and significant effect (P<0.05) on feed intake, but there is no significant difference on body weight, percentages of abdominal fat and water holding capacity (WHC). Furthermore, effect of level corn substitition with PKM nested to PKM untreated and PKM treated by enzyme was significantly effect (P<0.01) on feed intake, body weight, FCR, and tenderness and significant effect (P<0.05) on IOFC, but there is no effect on percentages of abdominal fat, WHC and meat cholesterol. It can be concluded that the corn substitution with PKM treated by enzymes was better than the PKM untreated on production performance and carcass quality of broilers. The optimal level of PKM untreated as corn substitution was 12.5%. While replacement with PKM treated by enzyme can be used up to 25%.

scholarly journals Effects of Breeder Age on Genetic Parameter Estimates of Slaughter and Carcass Traits in Japanese Quail

2018 ◽  
Vol 6 (02) ◽  
Author(s):  
Eser Kemal Gurcan ◽  
Dogan Narinc ◽  
Selcuk Kaplan
Keyword(s):  
Genetic Parameter ◽  
Carcass Traits ◽  
Genetic Correlations ◽  
Abdominal Fat ◽  
Carcass Weight ◽  
Parameter Estimates ◽  
Slaughter Weight ◽  
Parameter Estimations ◽  
Breast Weight ◽  
Positive Results

This study aimed to determine the phenotypic values of the slaughter and carcass traits in the flocks of quails obtained when a flock of parent quails were at 12, 16, and 20 weeks of age and to estimate the heritabilities and the genetic correlations for these traits. For this purpose, a total of 1,346 Japanese quails were slaughtered at 8 weeks of age, and their slaughter weights as well as carcass, breast, leg, and abdominal fat weights and ratios were determined. Differences in all traits were detected between female and male quails (P<0.05). The averages of many important traits, primarily slaughter weight, carcass weight, and breast weight, increased with the increase in the breeder age. On the contrary, the carcass yield decreased (P<0.05). There were no significant variations in the phenotypic and genetic variances for the slaughter and carcass traits in the flocks obtained when the breeder flock was at different ages. The heritabilities for slaughter weight, carcass weight, and abdominal fat weight were estimated to be moderate, and the genetic correlations among them were estimated to be positive and high. In conclusion, it is possible to state that positive results might be obtained by using the carcass ratio as the criterion for selection in quails. Besides, the breeder age was discovered to have had no significant effect on the genetic parameter estimations.

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