Performance, egg quality, and immune response of laying hens fed diets supplemented with mannan-oligosaccharide or an essential oil mixture under moderate and hot environmental conditions

Poultry Science
M BozkurtF Cöven

Abstract

In total, 432 thirty-six-week-old laying hens were fed a basal diet supplemented with mannan-oligosaccharide (MOS) or an essential oil mixture (EOM) from 36 to 51 wk of age. Hens were divided into 3 equal groups replicated 6 times with 24 hens per replicate. No significant difference was observed among the dietary treatments in terms of performance indices. Different from the dietary manipulation, high environmental temperatures negatively influenced all of the laying performance traits except the feed conversion ratio in association with the diminished feed consumption. The MOS, and particularly the EOM, tended to alleviate the deleterious effect of heat stress on BW gain. Mortality was higher in MOS-fed hens than with other treatments. A supplementation diet with MOS or EOM provided increments in eggshell weight (P < 0.01). Relative albumen weight was significantly decreased (P < 0.05) in response to EOM or MOS supplementation; however, this was not the case in the yolk weight rate. The MOS decreased albumen height and Haugh unit (P < 0.05). High environmental temperatures hampered entire egg quality characteristics except for the eggshell breaking strength and egg yolk weight. These results indicated that heat stress adverse...Continue Reading

Citations

Mar 25, 2020·Journal of Animal Science·Marcos H Rostagno
Jul 19, 2020·The Journal of Experimental Biology·Octavio GiayettoF Nicolás Nazar
Feb 14, 2019·Anais Da Academia Brasileira De Ciências·Elis Regina DE M GarciaEvilásio P DE Melo
May 30, 2019·Frontiers in Microbiology·Andrew MiccicheSteven C Ricke
Jan 1, 2013·Animals : an Open Access Journal From MDPI·Lucas J Lara, Marcos H Rostagno
Jul 18, 2018·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Zora Dajić StevanovićMarko Vasiljević
Feb 13, 2021·Animals : an Open Access Journal From MDPI·Miguel Rabelo-RuizJuan Manuel Peralta-Sánchez
May 22, 2021·Journal of Thermal Biology·Abdel-Moneim Eid Abdel-MoneimTarek A Ebeid
Jun 9, 2021·Poultry Science·Steven C Ricke
Aug 24, 2021·Journal of Thermal Biology·Rana Muhammad BilalMahmoud Alagawany

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