Thyroid Hormone and Blood Metabolites Concentrations of Broiler Chickens Subjected to Feeding Time Restriction

Abstract

ABSTRAKPenelitian ini bertujuan untuk menguji pengaruh pembatasan waktu makan terhadap konsentrasi hormon tiroid dan metabolit darah ayam broiler selama periode pembatasan dan pemulihan. Sebanyak 400 ekor ayam broiler unsexed strain Lohmann umur 7 hari ditempatkan pada 5 perlakuan dengan menggunakan rancangan acak lengkap dan dianalisa menggunakan ANOVA. Perlakuan terdiri atas: ransum yang diberikan ad libitum (R-0); ransum yang disediakan 2 jam pada pagi hari dari pukul 08:00-10:00 dan 2 jam pada sore hari dari pukul 16:00-18:00 dari umur 7 hingga 14 hari (R-1) dan umur 7 hingga 21 hari (R-2); ransum disediakan 4 jam pada pagi hari dari pukul 08:00-12:00 dan 4 jam pada sore hari dari pukul 16:00-20:00 dari umur 7 hingga 14 hari (R-3) dan umur 7 hingga 21 hari (R-4). Setiap perlakuan memiliki ulangan sebanyak 4 dengan jumlah ayam sebanyak 20 ekor/unit. Konsentrasi hormon tiroid dan plasma albumin pada R-2 dan R-4 lebih rendah (P<0,05) daripada R-0 selama pembatasan waktu makan dari umur 7 hingga 21 hari. Konsentrasi hormon tiroid dan metabolit darah tidak berbeda nyata diantara semua perlakuan selama periode pemulihan dari umur 21 hingga 42 hari. Disimpulkan bahwa konsentrasi hormon tiroid triiodotironin dan tiroksin (T 3 dan T 4 ) dan plasma metabolit darah (albumin) menurun selama pengaturan waktu makan 4 dan 8 jam/hari dari umur 7 hingga 21 hari, akan tetapi, kondisi demikian kembali normal selama periode pemulihan. Kata kunci: broiler, hormon tiroid, metabolit darah, pengaturan waktu makan ABSTRACTThe present study was conducted to determine the effect of feeding time restriction on thyroid hormone and blood metabolites concentration of broiler chickens during feed restriction and realimentation period. Four hundred of 7 days-old unsexed broiler chicken of Lohmann commercial strain were arranged in a completely randomized design with 5 treatments and analyzed based on ANOVA. The treatments were: chicks fed ad libitum as a control treatment (R-0); chicks had free access to feed during two periods of 2 h (08:00-10:00 and 16:00-18:00) from 7-14 d of age (R-1) and 7-21 d of age (R-2); chicks had free access to feed during two periods of 4 h (08:00-12:00 and 16:00-20:00) from 7-14 d of age (R-3) and 7-21 d of age (R-4). The treatments consisted of 4 replicates with 20 chicks each. During feeding time restriction from 7 to 21 d of age, thyroid hormone and albumin plasma concentration of R-2 and R-4 were lower (P<0.05) than R-0. There were no statistical differences among the treatments on thyroid hormone and blood metabolites during realimentation period from 21 to 42 d of age. It is concluded that thyroid hormone triiodothrionine and thyroxine (T 3 and T 4 ) and blood metabolite (albumin) decreased during feeding time restriction for 4 and 8 h per d from 7 to 21 d of age and it returns to normal during realimentation period.

The Effects of Early Feed Restriction on Growth Performance, Internal Organs and Blood Biochemical Indicators of Broilers

“…These results are support to those of Azis et al [23]. Previous studies in poultry have indicated that dietary dilution can improved the plasma levels of hormones.…”

Hematological and antioxidants responses of dairy cow fed with a combination of feed and duckweed (Lemna minor) as a mixture for improving milk biosynthesis

“…It is suspected that with an increase in total phenol, antioxidant activity is higher and greater than low phenol levels. Duckweed is often used as a traditional medicine because it has a variety of benefits such as: anticancer, antidiabetic (Korivi et al 2012), antifungal (Vizzotto et al 2015), antimicrobial (Pickler et al 2013;Tian et al 2015), anti-inflammatory and analgesic (Xu et al 2015;Moreno et al 2015;Kusmayadi et al 2018), antioxidant (Mushawwir et al 2010(Mushawwir et al , 2011Hecker and McGarvey 2011;Fabris et al 2017), and sedative activity from the nervous system (Azis et al 2012;De Castro et al 2013;Pouyssegur and Mechta-Grigoriou 2016). These activities can be produced because of the role of chemical compounds contained therein such as alkaloids, phenols, flavonoids (He et al 2009) and the other report showed some chemicals such as tannins, anthocyanins, glycosides, bufadienolides, saponins, coumarin, sitosterol, quinine, and lectins (O'Brien et al 2010;Rhoads et al 2013;Shehab-El-Deen et al 2014).…”

Profiles of Cortisol, Triiodothyronine, Thyroxine and Neutrophil/Lymphocyte Ratio as Stress Indicators in Swamp Buffaloes 15 Days Post-Transportation

“…Rajion et al (2001) reported that N/L ratio and serum glucose concentration in goats were significant elevated during transportation at an ambient temperature of 29 o C. In the stressful condition of transport, adrenokortikoid activity is also increased and indicated by an increase in cortisol level. In addition to this hormone, stress condition can also affect the secretion of the thyroid hormone, triiodothyronine (T3) and tetraiodothyronine/thyroxine (T4) with various mechanisms (Hangalapura et al, 2004;Astuti et al, 2010;Azis et al, 2012).…”