Combined supplementation of organic acid blend and hydrolyzed yeast mixture increases growth performance and tibia bone strength in broilers

Abstract

This study investigates the effects of hydrolyzed yeast mixture (HYM) and an organic acid blend (OAB) supplementation individually and in combination on growth performance and tibia bone characteristics of broilers. A total number of 128 one day- old chicks were divided into four different groups with each group having 4 replicates in a trial of 35 days. The first group was kept as control whereas, the second and third groups were given HYM and OAB respectively. The fourth group (HYM+OAB) was given combination of HYM and OAB. At the end of trial, two birds from each replicate were slaughtered for analysis. Results revealed that feed conversion ratio and live body weight were significantly higher in HYM+OAB compared to other groups. Tibial bone analysis revealed that robusticity and tibiotarsal indices were significantly better for HYM+OAB. It is concluded that compared to individual, combined supplementation of HYM and OAB is more beneficial in broilers.

Carcass Yield and Histo-Anatomical Changes in Broilers Fed on Diet Supplemented with Different Levels of Phytobiotics

“…Currently we lack sufficient literature to explain the effects of different levels of garlic and ginger supplementation on weight of visceral organs. Bursa of fabricius, thymus and spleen are parts of immune system and an increased weight of these organs is an indicator of immunological advances as they produce lymphocytes which protect birds from the harmful effects of invading pathogens (Saleem et al, 2018a). Our study confirms earlier findings of Rahimi et al (2011) who reported no difference in weight of pancreas and spleen after supplementation of birds with ginger.…”

“…Bone problems are among the major health issues of fast growing birds and can adversely affect production performance and profitability of birds if not taken care of properly (Vashan et al, 2016). Higher value of tibiotarsal index is an indicator of higher mineralization and higher strength of bone, whereas, higher robusticity index indicates poor mineralization and bone strength (Saleem et al, 2018a). In our study supplementation of garlic and ginger increased bone strength as both of these phytobiotics enhance the absorption of minerals in feed by improving the morphology and microbiology of intestine (Eltazi, 2014) that leads to better mineralization of bone giving it more strength.…”

“…The following formulae were used for estimating the tibiotarsal and robusticity indices Tibiotarsal index = diaphysis diameter -medullary canal diameter/ diaphysis diameter × 100 Robusticity index = bone length/ cube root of bone weight. (Saleem et al, 2018a) Intra epithelial lymphocyte count: About 3cm long small intestinal segments from midpoints of duodenum (segment encompassing the duodenal loop), jejunum (segment between duodenum and ileum) and ileum (distal segment before the ileo-cecal junction equaling the length of caecum) were taken and fixed in 10% neutral buffered formalin. Segments were then embedded in paraffin, stained by haematoxylin and eosin and observed under microscope (Labomed, USA).…”

“…Bone is composed of organic and inorganic substances which give elasticity and strength to bone, respectively (Saleem et al, 2018a). Bone problems are among the major health issues of fast growing birds and can adversely affect production performance and profitability of birds if not taken care of properly (Vashan et al, 2016).…”