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Effects of zinc and Bacillus subtilis on the reproductive performance, egg quality, nutrient digestion, intestinal morphology, and serum antioxidant capacity of geese breeders.
- Source :
-
Poultry Science . Mar2022, Vol. 101 Issue 3, pN.PAG-N.PAG. 1p. - Publication Year :
- 2022
-
Abstract
- The effects of zinc (Zn) and Bacillus subtilis ( B. subtilis ) on reproductive performance, egg quality, nutrient digestion, intestine morphology, and antioxidant capacity were explored in geese breeders. Geese breeders (n = 120, 46-wk of age) were randomly assigned into 6 groups with 4 replicates of 5 birds each (1 male and 4 female). Breeders were fed diets with 2 levels of B. subtilis (2.5 × 109 and 5 × 109 CFU/kg) crossed with three levels of Zn (25, 45, and 65 mg/kg) for duration of 10-wk. The results showed that the egg laying rate (P < 0.05), fertility rate (P < 0.01), hatchability rate (P < 0.05), yolk color (P < 0.05), and the retentions of crude protein (P < 0.05), ether extract (P < 0.05) and phosphorus of geese breeders were improved by dietary supplementation of 5 × 109 CFU/kg B. subtilis and 25 mg or 45 mg/kg Zn. The serum T-SOD (P < 0.05) was increased by 45 mg/kg Zn supplementation. The serum T-AOC (P < 0.05) and retention of Zn (P < 0.05) were increased by 5 × 109 CFU/kg B. subtilis supplementation. The birds fed with 5 × 109 CFU/kg B. subtilis and 25 mg or 45 mg/kg Zn showed improved villus length (P < 0.01) and villus length/ crypt depth (P < 0.01) in both the jejunum and ileum. In conclusion, the combination of B. subtilis and Zn may have synergistic effects on these parameters, and dietary inclusion of 5 × 109 CFU/kg B. subtilis and 45 mg/kg Zn is recommended for improving the reproductive performance of geese breeders. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00325791
- Volume :
- 101
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Poultry Science
- Publication Type :
- Academic Journal
- Accession number :
- 155459212
- Full Text :
- https://doi.org/10.1016/j.psj.2021.101677