Kumar Pankaj, Tiwari S P, Sahu Tarini, Naik Surendra Kumar
Department of Animal Nutrition, College of Veterinary Science and Animal Husbandry, Anjora Chhattisgarh Kamdhenu Vishwavidyalaya, Durg, Chhattisgarh, India.
Vet World. 2015 Feb;8(2):164-9. doi: 10.14202/vetworld.2015.164-169. Epub 2015 Feb 13.
This study was conducted to investigate the effect of selenomethionine and omega-3 fatty acid on serum mineral profile and nutrient utilization of broiler chicken.
The present study was a 2×3 factorial arrangement of two levels of selenomethionine (0 and 0.3 ppm) and three levels of omega-3 fatty acid (0, 0.5 and 1%). Day-old Vencobb broiler chicks (n=180), were randomly assigned in six treatment groups. The experiment lasted for 42 days. Treatment groups followed of: Group I was a control. Group II, III, IV, V and VI were supplemented with 0 ppm selenomethionine with 0.5% omega-3 fatty acid, 0 ppm selenomethionine with 1% omega-3 fatty acid, 0.3 ppm selenomethionine with 0% omega-3 fatty acid, 0.3 ppm selenomethionine with 0.5% omega-3 fatty acid and 0.3 ppm selenomethionine with 1% omega-3 fatty acid, respectively. Linseed oil was used as a source of omega-3 fatty acid while sel-plex is used for selenomethionine supplementation.
Significant (p<0.05) interaction exist between selenomethionine and omega-3 fatty acid for serum zinc and iron concentration whereas, it was non-significant for serum calcium and copper. Significantly (p<0.05) increased concentration of selenium, zinc, iron and phosphorus was observed in birds fed 0.3 ppm selenomethionine whereas, significantly (p<0.05) increased zinc and iron was observed in birds fed 0.5% omega-3 fatty acid. There was significant (p<0.05) interaction exist between selenomethionine and omega-3 fatty acid for calcium and phosphorus retention percentage. The maximum retention of calcium and phosphorus was recorded in birds supplemented with 0.3 ppm selenomethionine in combination with 0.5% omega-3 fatty acid. There was marked interaction between selenomethionine and omega-3 fatty acid for hemoglobin (Hb), total erythrocytic count, total leukocytic count and platelets (p<0.05) however, it was non-significant for mean corpuscular volume, mean corpuscular Hb, MCH concentration and differential leukocyte count. Dietary selenomethionine significantly (p<0.05) increased the platelet count. Hb concentration was significantly (p<0.05) higher in birds fed 0.5% omega-3 fatty acid whereas, 1% omega-3 fatty acid in the diet drastically increased (p<0.05) the platelet count.
Supplementation of selenomethionine and omega-3 fatty acid improves the nutrient utilization and mineral retention, which subsequently enhance the bone mineralization. Supplementation also helps in combating the stress.
本研究旨在探讨硒代蛋氨酸和ω-3脂肪酸对肉鸡血清矿物质水平及营养物质利用率的影响。
本研究采用2×3析因设计，设置两个水平的硒代蛋氨酸（0和0.3 ppm）和三个水平的ω-3脂肪酸（0、0.5%和1%）。1日龄的文考布肉鸡雏鸡（n = 180），随机分为6个处理组。试验持续42天。处理组如下：Ⅰ组为对照组。Ⅱ、Ⅲ、Ⅳ、Ⅴ和Ⅵ组分别添加0 ppm硒代蛋氨酸和0.5%ω-3脂肪酸、0 ppm硒代蛋氨酸和1%ω-3脂肪酸、0.3 ppm硒代蛋氨酸和0%ω-3脂肪酸、0.3 ppm硒代蛋氨酸和0.5%ω-3脂肪酸、0.3 ppm硒代蛋氨酸和1%ω-3脂肪酸。亚麻籽油用作ω-3脂肪酸的来源，而硒宝用于补充硒代蛋氨酸。
硒代蛋氨酸和ω-3脂肪酸对血清锌和铁浓度存在显著（p<0.05）交互作用，而对血清钙和铜无显著交互作用。在饲喂0.3 ppm硒代蛋氨酸的鸡中，硒、锌、铁和磷的浓度显著（p<0.05）升高；而在饲喂0.5%ω-3脂肪酸的鸡中，锌和铁显著（p<0.05）升高。硒代蛋氨酸和ω-3脂肪酸对钙和磷保留率存在显著（p<0.05）交互作用。在同时补充0.3 ppm硒代蛋氨酸和0.5%ω-3脂肪酸的鸡中，钙和磷的保留率最高。硒代蛋氨酸和ω-3脂肪酸对血红蛋白（Hb）、红细胞总数、白细胞总数和血小板有显著（p<0.05）交互作用，而对平均红细胞体积、平均红细胞血红蛋白含量、平均红细胞血红蛋白浓度和白细胞分类计数无显著交互作用。日粮中的硒代蛋氨酸显著（p<0.05）增加血小板计数。饲喂0.5%ω-3脂肪酸的鸡中Hb浓度显著（p<0.05）更高，而日粮中1%ω-3脂肪酸显著（p<0.05）增加血小板计数。
补充硒代蛋氨酸和ω-3脂肪酸可提高营养物质利用率和矿物质保留率，进而增强骨矿化。补充还有助于抵抗应激。
