فهرست مقالات وزن لاشه

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  1 - Evaluation the Impact of Carcass Weight, Age at Slaughter, and Sex on the Chemical Composition of Lamb Meat: The Case of the Boutsiko Sheep Breed
  و. الکساندریدیس ب. اسکاپتاس د. کانتاس پ. گولاس م. کالایتزیدو
  The effect of carcass weight, age at slaughter and sex on some chemical components was evaluated in twenty-two Boutsiko lambs (twelve females and ten males). Chemical composition of meat was expressed as percentage of fat, protein, collagen and moisture content. Measure چکیده کامل

  The effect of carcass weight, age at slaughter and sex on some chemical components was evaluated in twenty-two Boutsiko lambs (twelve females and ten males). Chemical composition of meat was expressed as percentage of fat, protein, collagen and moisture content. Measures of the four chemical components were taken by carcass cuts included shoulder, leg, racks, kidney, rear flank, breast ribs and scrag-end. Results have shown that the percentage content of fat, protein, moisture and collagen are in a good level compared to the other sheep breeds and E.U. Directives. Regression analysis showed that among the three independent variables only carcass weight had significant effect on the content of fat, protein and moisture, while the age at slaughter was the only factor which has an impact on the value of collagen. The significant positive relation of carcass weight with fat content and its negative relation with moisture and protein is an indication that lessening the weight by a small amount will have comparatively favorable results in the chemical quality of meat through the reduction of fat and the increasing of moisture and protein content. Small reduction of age at slaughter will further improve the level of collagen, which is the basic parameter affecting the tenderness of the meat. Reduction of carcass weight and age at slaughter means less meat in the market and lower returns for producers. پرونده مقاله
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  2 - Polymorphism of DGAT1 Gene and Its Relationship with Carcass Weight and Dressing Percentage in Moghani Sheep Breed
  ف. علاء نوشهر ع. رأفت
  The diacylglycerol acyltransferase 1 gene (DGAT1) was identified as a strong candidate gene affecting mutton quality traits in sheep. Single nucleotide polymorphism creates a single base mutation (C to T) in AGCT site of endonuclease AluI. DGAT1 is one of the candidate چکیده کامل

  The diacylglycerol acyltransferase 1 gene (DGAT1) was identified as a strong candidate gene affecting mutton quality traits in sheep. Single nucleotide polymorphism creates a single base mutation (C to T) in AGCT site of endonuclease AluI. DGAT1 is one of the candidate genes to improve carcass characteristics in feedlot animals. In order to study area T487C in exon 17 of the DGAT1 polymorphism, Iranian Moghani sheep breeds randomly slaughtered in the abattoir were recorded. DNA was extracted from 150 samples of Moghani sheep. Polymerase chain reaction to amplify 309 bp of exon 17 DGAT1 gene using a pair of specific primers was performed. Genotypes obtained from method PCR-RFLP and directly from agarose gel. Two alleles T and C with frequencies of 0.829 and 0.171 were observed respectively. Statistical analysis showed polymorphism in exon 17 region of the gene significantly correlated with carcass weight and dressing percentage (P<0.05). So that the CC genotypes of the significant mean carcass weight and dressing percentage heavier than had TT genotypes (P<0.05). Of polymorphism can be observed that improvement in breeding programs to improve carcass weight and dressing percentage through selection in favor of superior genotypes be used. پرونده مقاله
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  3 - Effect of Dietary Supplementation of <i>Aspergillus</i> Xylanase on Broiler Chickens Performance
  سی.ای. اُییگو وی. ملامبو وی. موچنج یو. ماروم
  The effect of Aspergillus xylanase (ASXYL) supplementation to maize-soybean diets on serum aspartate aminotransferase, serum alanine aminotransferase, microbial examination, growth traits, carcass characteristics and meat quality traits of broiler chickens was investiga چکیده کامل

  The effect of Aspergillus xylanase (ASXYL) supplementation to maize-soybean diets on serum aspartate aminotransferase, serum alanine aminotransferase, microbial examination, growth traits, carcass characteristics and meat quality traits of broiler chickens was investigated. Three hundred one-day-old mixed sex &ldquo;Cobb 500&rdquo; broiler chicks were allotted to 5 dietary treatments with 5 replicates of 12 birds each. The treatments include, ASXYL0 (0 g/kg), ASXYL10 (1 g/kg), ASXYL15 (1.5 g/kg), ASXYL20 (2 g/kg) and ASXYL25 (2.5 g/kg). Birds fed ASXYL20 had the highest (P&lt;0.05) body weight with an improved feed conversion ratio (FCR) and a higher values for thigh, breast, wing and carcass yields. Neck weight was high (P&lt;0.05) for fed birds ASXYL0, ASXYL15 and ASXYL20. Drumstick recorded higher (P&lt;0.05) value for birds fed ASXYL20 though, similar to ASXYL10, ASXYL15 and ASXYL25. Drip and cooking loss decreased (P&lt;0.05) with increased supplemental levels of ASXY while shear force increased (P&lt;0.05) as ASXYL supplementation increased. Urea, aspartate aminotransferase and alanine aminotransferase decreased (P&lt;0.05) with increased supplemental levels of ASXYL while glucose level increased (P&lt;0.05) with increased levels of ASXYL supplementation. Supplementary ASXYL influenced (P&lt;0.05) the proliferation of Lactobacillus counts in ileum and caecum while no difference (P&gt;0.05) was observed on the population of Bifidobacteria and Escherichia coli in both ileum and caecum of broilers at the end of the feeding trial. It was concluded that dietary ASXYL20 produced a much improved body weight and retail cut yields. Again, the bio-markers showed that ASXYLimproved the health status of broiler chicken and the tested enzyme influenced a positive intestinal environment. پرونده مقاله