التعبير الجيني ووفرة نسخ mRNA لجينات نقل العناصر الغذائية في الامعاء الدقيقة لفروج اللحم باختلاف مستوى الطاقة والبروتين في العليقة == Gene Expression and mRNA Abundance of Nutrients Transporter Genes in The Small Intestine of Broiler of Different Levels of Protein and Energy in Diets
Author name:
علي احمد عبد الكریم ابراهیم العامري
Supervisor name:
اسعد یحیى عاید | عبد لله عبد المنعم
General topic:
Agricultural sciences
Specific topic:
Zoology
Degree:
Doctorate
University:
University Of Basrah - Faculty Of Agriculture
Language:
Arabic
University location:
Basrah
First pages:
31T1835 - p.pdf
Abstract:
This study was conducted in both Poultry Farm/Animal Resources Department/ College of Agriculture / University of Basra and laboratories of Molecular Biology/ London/ United Kingdom (The Molecular Oncology Unit Laboratories of Guy's and St Thomas's Hospital/ Kings College London/ UK). Molecular analysis of the samples and the detection of a number of gene expression of several feed transporter genes in the small intestine of broiler chickens when fed diets with different levels of energy and protein. A total of 225 unsexed one day old broiler chicks (Ross breed) were randomly distributed on five experimental treatments each with three replicates of 15 chicks. Feeding was ad libitum during the whole period of experiment that lasted 35 days.The first treatment was control with 22.3 and 20 % crude protein and 2910 and 3001 kcal/kg for starter and growth period respectively. The second treatment consisted 24.1 and 22 % crude protein and 2920 and 2978 kcal/kg for starter and growth period respectively. The third treatment consisted 20 and 18 % and 2898 and 2996 kcal/ kg for starter and growth period respectively. The fourth treatment consisted 21.9 and 20 % and 3107 and 3199 kcal/ kg for starter and growth period respectively. The fifth treatment consisted 22.2 and 20 % and 2720 and 2800 kcal/ kg for starter and growth period respectively. The results revealed the followings : - The study showed the ability to amplify all genes and find their abundance according to their primers. - The highest value of APN gene abundance of female in the duodenum (1.86 ng) fed diet with 22 % cp and 3199 kcal/kg ME. - Highest abundance (6.19 ng) of Pept1 mRNA showed by males in their jejunum, when fed a diet consisted 22 % cp and 3199 kcal/kg ME. - The greatest value of b - AT and CAT2 amino acids transporter genes effect was revealed by males fed diet with 22 % cp and 3001 kcal/kg ME. - Females fed 20 % cp and 3199 kcal/kg ME diets reordered highest SGLT1 gene expression (4.70ng) within their ileum. - Males fed 20 % cp and 3199 kcal/kg ME diets reordered highest GLUT5 gene expression (6.37 ng) within their ileum. - All genes associated positively and significantly with body weight, growth rate, carcass cuts percentages (legs, breast, intestine length and weight) at the age of 35 days and negatively with feed consumption and feed conversion ratio. - Amino acid and peptides transporter genes abundance improved with an increase in diet protein, that of saccharide transporter improves with the increase of ME level in the diets. - Male gave higher mRNA copies of most genes in comparison with females, except that of SGLT1 and NPA which increased in females. - It is possible to manipulate nutrient transporter gene expression by feeding. That may reflect on birds performance.
