The Effect of Melatonin and Vitamin E (alpha-Tocopherol Acetate) Via Regulating Mrna Expression on Protection From Oxidative Stress in Awassi Lambs Fed With High and Normal Energy Diet
No Thumbnail Available
Date
2023
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Bu çalışmanın amacı, melatonin implant ve vitamin E ilave edilmiş normal ve yüksek enerjili rasyonlar ile beslenen kuzuların performansı, karkas özellikleri, karaciğerin antioksidan enzim durumu, depolama sırasında kas MDA ve Vitmin E miktarı, ve kan parametreleri, antioksidan enzim ile karaciğer dokusunda gen ekspresyonu (GPX-3, SOD-1 ve 1L-6) üzerine etkilerinin araştırılmasıdır. Araştırmada 10 farklı deneme grubu oluşturulmuştur. 1. Deneme grubu, Normal enerji yemi (NED), NED ile beslenen ancak 18 mg, 36 mg melantonin/kuzu implant edilen grubu ile NED yemine 200 ve 400 mg/kuzu/gün Vitamin E (VE) grupları, aynı şekilde, yüksek enerjili yem (HED) ile beslenen 18-36 mg/kuzu implant edilmiş grubu ile HED yemine 200-400 mg/lamb/gün VE ilave edilmiş yem grupları oluşturulmuştur. 50 kuzu deneme gruplarına her birinde 5 hayvan olacak şekilde rastgele dağıtılmıştır. Deneme 60 günlük bir periyotta tamamlanmıştır. Deneme sonunda, (400 mg VE/gün/kuzu) ilave edilmiş yüksek enerjili yemler ile beslenen kuzular, deneme sonu CA (48.2 kg) (P<0.05) diğer gruplara göre önemli ölçüde yüksek saptanmıştır. Melatonin 36 mg/kuzu ve vitamin E 400 mg/kuzu/gün sıcak karkas ağırlığı, soğuk karkas ağırlığı ve soğuk karkas randımanı üzerinde önemli etki göstermiştir (p<0.05). Melatonin 36 mg/kuzu implantı grupları depolama periyodunun 7. gününde ve VE 400 mg/kuzu/gün ilave edilmiş NED ve HED grupları ile 14. günde önemli ölçüde (P< 0.05) daha düşük damlama kaybı (drip lost) kayıt edilmiştir. Minolta renk (a*) etin kırmızılık (a*) değeri depolamanın 7. ve 14. gününde, 400 mg VE/kuzu/gün verilen gruplarda diğer gruplara göre önemli ölçüde yüksek bulunmuştur (p<0.05). Deri altı yağ kalınlığı HED grubu yemlerde NED yeme nazaran önemli ölçüde düşük tespit edilmiştir. Normal yeme 400 mg/kuzu/gün VE ilave edilen grup ile HED yeme ilave edilen 200 ve 400 mg VE ve 18-36 mg melatonin implantının önemli ölçüde deri altı yağ kalınlığını diğer gruplara göre azalttığı saptanmıştır. İvesi koyunları karaciğer dokusunda, Melatonin 36 mg and VE 400 mg grupları ile GPX-3 genini yukarı yönlü regüle ederken HED ile daha etkili olduğu saptandı. NED ya da HED yemlerine doğrudan her iki konsantrasyon E vitamini ilavesi SOD-1 gen ekspresyonunu yukarı doğru regüle ederken HED'e kıyasla NED'de daha etkili olduğu ve IL-6 geninin ise aşağı-regule olduğu bu çalışmada saptanmıştır. Anahtar kelimeler: Antioksidan, Ekspresiyon, Enerj, Gen, GPX-3, İvesi kuzusu, IL-6, Melatonin, Nutrigenom, Performans, SOD-1, Vitamin E, Yem
This experiment was conducted to assess the impact of melatonin implants and vitamin E supplementation on fattening performance, meat quality traits, oxidative stress, antioxidant enzyme concentration and gene expression (GPX-3, SOD-1 ve 1L-6) of Awassi male lambs fed by a Normal Energy Diet (NED) and High Energy Diet (HED). Ten experiment treatments were planned as two main level of energy (NED, HED) and two levels of melatonin (18, 36 mg/lamb) implanted to (NED and HED fed lambs), and two levels of Vitamin E (VE) (200 and 400 mg/lamb/day) supplemented to (NED and HED). Fifty lambs were randomly divided to each treatment and 5 animals in each. All animals were slaughtered at the end of the 60 days of fattening period. Lambs received HED+400 mg VE/day/lamb diet had higher significantly final weight (48.2 kg), total weight gain (18.8 kg) and better FCR (5.42) compared to NED (42.1 kg, 13.2kg, 7.27) respectively (p<0.05). PH values of 24 hours after postmortem was reduced in all treatments compare to diet (6.05) p<0.05). 400 mg VE/day/lamb and 18-36 mg melatonin implant at day 14 of storage reduced drip lost (p<0.05). Minolta a* values of LD muscle in 400 mgVE/lamb/day supplemented to NED and HED treatments at 7-14 days storage were significantly higher than compared to all other treatments. Melatonin implantation of 18-36 mg/lamb and 200-400 mg VE supplement treatments significantly reduced MDA value in LD muscle at 7d-14d of storage (p<0.05). Melatonin implantation (18-36 mg) increased blood glucose and total protein levels significantly (P<0.05). A substantial reduction in serum ALT (Alanine Amino Transferase) activity was recorded as 12.7 U/L in 400 mg VE/day/lamb treatment (p<0.05). Blood ALT levels in NED+200 mg VE/day/lamb diet decreased more than other treatment groups (p<0.05). Muscle VE concentrations of lambs fed by (NED or HED) plus 200 or 400 mg VE/lamb/day during 2, 7 and 14 days of the storage period had considerably higher than the NED and HED treatments. Melatonin 36 mg and VE 400 mg were more effective with HED on up-regulating related gene expression of GPX-3. Vitamin E improved the SOD-1 gene expression either added to the NED or HED directly to both concentrations, however, higher gene expression was observed in NED compared to HED. IL-6 was down-regulated gene expression in Awassi lambs' liver. Keywords: Antioxidant, Awassi lamb, Diet, Energy, Expression, Gene, GPX-3, IL-6, Melatonin, Nutrigenomics, Performance, SOD-1, Vitamin E
This experiment was conducted to assess the impact of melatonin implants and vitamin E supplementation on fattening performance, meat quality traits, oxidative stress, antioxidant enzyme concentration and gene expression (GPX-3, SOD-1 ve 1L-6) of Awassi male lambs fed by a Normal Energy Diet (NED) and High Energy Diet (HED). Ten experiment treatments were planned as two main level of energy (NED, HED) and two levels of melatonin (18, 36 mg/lamb) implanted to (NED and HED fed lambs), and two levels of Vitamin E (VE) (200 and 400 mg/lamb/day) supplemented to (NED and HED). Fifty lambs were randomly divided to each treatment and 5 animals in each. All animals were slaughtered at the end of the 60 days of fattening period. Lambs received HED+400 mg VE/day/lamb diet had higher significantly final weight (48.2 kg), total weight gain (18.8 kg) and better FCR (5.42) compared to NED (42.1 kg, 13.2kg, 7.27) respectively (p<0.05). PH values of 24 hours after postmortem was reduced in all treatments compare to diet (6.05) p<0.05). 400 mg VE/day/lamb and 18-36 mg melatonin implant at day 14 of storage reduced drip lost (p<0.05). Minolta a* values of LD muscle in 400 mgVE/lamb/day supplemented to NED and HED treatments at 7-14 days storage were significantly higher than compared to all other treatments. Melatonin implantation of 18-36 mg/lamb and 200-400 mg VE supplement treatments significantly reduced MDA value in LD muscle at 7d-14d of storage (p<0.05). Melatonin implantation (18-36 mg) increased blood glucose and total protein levels significantly (P<0.05). A substantial reduction in serum ALT (Alanine Amino Transferase) activity was recorded as 12.7 U/L in 400 mg VE/day/lamb treatment (p<0.05). Blood ALT levels in NED+200 mg VE/day/lamb diet decreased more than other treatment groups (p<0.05). Muscle VE concentrations of lambs fed by (NED or HED) plus 200 or 400 mg VE/lamb/day during 2, 7 and 14 days of the storage period had considerably higher than the NED and HED treatments. Melatonin 36 mg and VE 400 mg were more effective with HED on up-regulating related gene expression of GPX-3. Vitamin E improved the SOD-1 gene expression either added to the NED or HED directly to both concentrations, however, higher gene expression was observed in NED compared to HED. IL-6 was down-regulated gene expression in Awassi lambs' liver. Keywords: Antioxidant, Awassi lamb, Diet, Energy, Expression, Gene, GPX-3, IL-6, Melatonin, Nutrigenomics, Performance, SOD-1, Vitamin E
Description
Keywords
Ziraat, Agriculture
Turkish CoHE Thesis Center URL
WoS Q
Scopus Q
Source
Volume
Issue
Start Page
End Page
136