Effect of emulsifier and multicarbohydrase enzyme supplementation on performance and nutrient digestibility in broiler diets containing rapeseed meal

Abstrakt

The aim of this study was to determine the effect of emulsifier and multicarbohydrase enzyme supplementation on performance, nutrient utilization, and apparent metabolizable energy—nitrogen (AMEN) value of broiler diets containing rapeseed meal (RSM) as well as their influence on the gut morphological structures, excretion of total and free sialic acid, and cecum concentration of short-chain fatty acids (SCFAs) in broiler chickens. A total of 384 male broiler chicks were assigned to four dietary treatments. The diet of the control treatment (CON) consisted of soybean, maize, and RSM (5% in starter, 7% in grower, 15% in finisher) with soybean and palm oils. The diets used for the experimental treatments were the control diet supplemented with an emulsifier (EMU), enzyme (ENZ), or both (EMU + ENZ). The duodenum (n = 10/treatment) and ileum (n = 10/treatment) digesta samples were assessed to determine nutrient digestibility: crude protein (CP), ether extract (EE), starch, Ca. Throughout the experimental period, EMU + ENZ treatment indicated the lowest total average feed intake and feed conversion ratio, with the highest average weight gain among the studied treatments (P < 0.05). The EMU + ENZ treatment also resulted in higher (P < 0.05): apparent prececal digestibility (APD) of CP, total tract neutral detergent fibre (NDF) degradation, apparent total tract digestibility (ATTD) of EE, villus height to crypt depth ratio (P < 0.1). The highest APD of EE was noted in the EMU treatment (P < 0.05). No significant differences were found in the AMEN values of the diets. A greater jejunum villi surface area was found in groups supplemented by enzyme compared to CON (P < 0.05). The EMU + ENZ treatment presented lower sialic acid excretion in the ileum and concentration of cecum SCFAs compared to the CON treatment (P < 0.05). The obtained results indicate that simultaneous usage of additives had beneficial effect on production parameters, nutrient digestibility, NDF degradation, as well as gut mucosa morphology. Based on the SCFAs concentration results, separate or simultaneous addition of emulsifier or/and enzyme did not provoke excessive fermentation activity of cecal bacteria.

Autorzy

Zuzanna Wiśniewska
Zuzanna Wiśniewska
Paweł Kołodziejski
Paweł Kołodziejski
Ewa Pruszyńska
Ewa Pruszyńska
Paweł Konieczka
Paweł Konieczka
Misza Kinsner
Misza Kinsner
Paweł Górka
Paweł Górka
Jadwiga Flaga
Jadwiga Flaga
Kinga Kowalik
Kinga Kowalik
Marcin Hejdysz
Marcin Hejdysz
Marta Kubiś
Marta Kubiś
Sebastian Kaczmarek
Sebastian Kaczmarek
artykuł
POULTRY SCIENCE
Angielski
2023
102
1
102268
otwarte czasopismo
CC BY-NC-ND Uznanie autorstwa-Użycie niekomercyjne-Bez utworów zależnych 4.0
ostateczna wersja opublikowana
w momencie opublikowania
2022-11-16
140
3,8
0
1