Effects of Graded Levels of Crude Glycerine Addition to Diets on Growth Performance, Carcass Traits and Economic Efficiency in Broiler Chickens

Abstract

The aim of the current study was to evaluate the effects of graded levels of crude glycerine addition to diets on growth and economic performance, carcass yield, organ weights and moisture levels of meat in broiler chickens. For this purpose, a total of 270 one day old male chicks (Ross 308) were randomly divided into 3 equal groups which fed with isocaloric and isonitrogenous diets with graded levels (0%, 5% and 10%, respectively) of crude glycerine. Each of experiment group was constituted by 5 subgroups with 18 birds each. The birds had ad libitum access to feed and water until termination of the experiment at d 42. Results indicated that 5% dietary crude glycerine addition improved body weight, body weight gain and feed conversion ratio compare with birds fed with basal diet at d 42 (P<0.01). Similarly, dietary 10% crude glycerine supplementation also increased growth performance and improved FCR in broiler chickens at 28 th and 42 nd days of experiment (P<0.05 and P<0.001, respectively). Moreover, birds fed with 5% dietary crude glycerine had showed over 20% higher relative economic efficiency compare than birds fed basal diet. As a conclusion, dietary crude glycerine addition improved growth and economic performance and Feed Conversion Ratio of broilers in both supplementation levels. Keywords: Broiler, Carcass, Economic efficiency, Glycerine, Growth performance Rasyona Artan Düzeylerde Ham Gliserin İlavesinin Broylerlerde Büyüme Performansına, Karkas Özelliklerine ve Ekonomik Etkinliğe Olan Etkileri ÖzetBu araştırmanın amacı, rasyona artan düzeyde ham gliserin ilavesinin broylerlerde büyüme ve ekonomik performans, karkas randımanı, iç organ ağırlıkları ve etin nem düzeyi üzerine etkilerinin belirlenmesidir. Bu amaçla toplam 270 adet bir günlük yaşta erkek broyler civciv (Ross 308) her biri izokalorik ve izonitrojenik olan ve artan düzeylerde (sırasıyla %0, %5 ve %10) ham gliserin içeren yemlerle beslenen üç eş gruba ayrılmıştır. Her bir deneme grubu her biri kendi içinde 18 adet civciv içeren 5'er alt gruba ayrılmıştır. Hayvanlar denemenin sonlandığı 42. güne kadar yem ve suya ad libitum olarak ulaşmışlardır. Deneme sonunda %5 düzeyinde ham gliserin ilavesinin canlı ağırlık, canlı ağırlık artışı ve yemden yararlanma oranlarını bazal rasyonla beslenen hayvanlara göre önemli ölçüde iyileştirdiği belirlenmiştir (P<0.01). Benzer olarak rasyona %10 düzeyinde ham gliserin ilavesi denemenin 28. ve 42. günlerinde büyüme performansını arttırmış ve yemden yararlanma oranını iyileştirmiştir (sırasıyla, P<0.05 ve P<0.001). Buna ilaveten, %5 ham gliserin ile beslenen hayvanlar bazal rasyonla beslenenlere göre %20 daha yüksek göreceli ekonomik etkinlik göstermiştir. Sonuç olarak rasyona ham gliserin ilavesi, her iki düzeyde de, broylerlerde büyüme ve ekonomik etkinlik ile Yemden Yararlanma Oranı'nı iyileştirmiştir.

Desempenho de frangos de corte alimentados com dietas contendo diferentes níveis de glicerina purificada

“…Valores aproximados foram encontrados por (FREITAS et al, 2017;SEHU et al, 2013;SILVA et al, 2017;2019) que observaram que a inclusão de até 3% de glicerina não afetou cor, forma e estrutura do fígado das aves. Dessa forma, pode-se inferir que os que os níveis de glicerina utilizados nas dietas não interferiram nas características produtivas e na qualidade física da carne do peito de frangos de corte aos 42 dias de idade.…”

Impact of increasing crude glycerine levels in diet on growth, carcass traits, body measurements and blood cholesterol in growing Japanese quails

“…Cerrate et al (2006) assured that glycerol had no significant effect on broiler BWG. Contrarily, Sehu et al (2013) found that glycerine had significant impact on broiler chicken BWG and connected it with AME n content in glycerine which is 10% higher than maize. Bernardino et al (2015) suggested that these differences might be due to dissimilarities in energy content and other substances present in glycerine like methanol.…”

Purified glycerin in balanced diets of broiler chickens treated from 1 to 42 days of age

“…Studies using glycerin in broiler diets have shown that its inclusion does not affect the main performance characteristics at different production stages (Cerrate et al, 2006;Sehu et al, 2013;Silva et al, 2012). In studies conducted to evaluate the effects of increasing levels of glycerin (0, 5, and 10%) in diets of broilers from 1 to 42 days of age, Sehu et al (2012Sehu et al ( , 2013 observed that the inclusion of up to 5% glycerin did not affect performance traits, carcass yield, or body weight. Similarly, Romano et al Purified glycerin in balanced diets of broiler chickens treated from 1 to 42 days of age Silva et al (2014), using diets containing 2.5, 5.0, 7.5, and 10% glycerin, concluded that broilers can adequately metabolize up to 7.5% of dietary glycerol.…”