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- Title
CSÖKKENTETT NYERSFEHÉRJESZINTŰ, PROBIOTIKUMMAL KIEGÉSZÍTETT TAKARMÁNYOK HATÁSAI BROJLERCSIRKÉK TERMELÉSI EREDMÉNYEIRE ÉS BÉLEGÉSZSÉGÜGYI JELLEMZŐIRE.
- Authors
PATRIK, STRIFLER; BOGLÁRKA, HORVÁTH; JENNIFER, BENCZE-NAGY; NIKOLETTA, SUCH; GÁBOR, CSITÁRI; KÁRO1LY, DUBLECZ; LÁSZLÓ, PÁL
- Abstract
The benefits of using reduced crude protein diets and probiotics separately have already been demonstrated for broiler production traits and gut health status. However, there are few scientific results for co-administration. In the present experiment, the authors investigated how the reduction of the dietary crude protein level (1.5% in the grower and 2% in the finisher phase) and the supplementation of a probiotic (BA=Bacillus amyloliquefaciens CECT 5940 containing product; 500 mg/kg) affects the production and carcass parameters of chickens and certain intestinal health properties. The experiment started with a total of 576 male Ross 308 one-day old chickens. Two treatments were used in the starter phase (days 0-10): a control diet (C: control crude protein level) and a probiotic supplemented diet (C + BA: control crude protein level + BA supplementation), in 12 replicates (pens) per treatment, with 24 birds per pen. Two additional treatment groups (LP: reduced crude protein level; LP + BA: reduced crude protein level + BA) were formed in the grower (days 11-24) and finisher phase (days 25-39), with 6 replicates per treatment and 24 birds per pen. In the case of the production traits (body weight, body weight gain, feed conversation ratio), the birds fed low protein diets showed significantly better results compared to the birds in the control protein level groups (p<0.05). BA supplementation reduced the gas production (ballooning) and the occurrence of inflamed Peyer’s patches in the small intestine according to the examination of gut health status performed at day 29 (p<0.05). In addition, the occurrence of the symptom of thin intestinal wall was decreased by reduced crude protein feeding. Furthermore, the crude protein reduction of diets led to a significantly increased ratio of abdominal fat compared to the control diets (p<0.05). The probiotic supplement did not influence the ratio of the abdominal fat in the control protein groups. However, dietary BA supplementation decreased the ratio of abdominal fat of broilers fed low protein diets siginificantly (p<0.05).
- Publication
Animal Breeding & Feeding / Állattenyésztés és Takarmányozás, 2023, Vol 72, Issue 1, p29
- ISSN
0230-1814
- Publication type
Article