Effect of increasing ß-mannanase supplementation in diets containing copra meal on growth performance, meat quality, liver health, intestinal morphology, and nutrient utilization in broiler chickens.

Lee, Eun Cheol; Kim, Kang Hyeon; Kang, Min Sung; Kim, Deok Yun; Mugeniwayesu, Charline; Kil, Dong Yong

Lee, Eun Cheol; Kim, Kang Hyeon; Kang, Min Sung; Kim, Deok Yun; Mugeniwayesu, Charline; Kil, Dong Yong.

Afiliación

Lee EC; Department of Animal Science and Technology, Chung-Ang University, Anseong 17546, Korea.
Kim KH; Department of Animal Science and Technology, Chung-Ang University, Anseong 17546, Korea.
Kang MS; Department of Animal Science and Technology, Chung-Ang University, Anseong 17546, Korea.
Kim DY; Department of Animal Science and Technology, Chung-Ang University, Anseong 17546, Korea.
Mugeniwayesu C; Department of Animal Science and Technology, Chung-Ang University, Anseong 17546, Korea.
Kil DY; Department of Animal Science and Technology, Chung-Ang University, Anseong 17546, Korea.

Anim Biosci ; 2024 Aug 26.

Article en En | MEDLINE | ID: mdl-39210810

ABSTRACT

ABSTRACT

Objective:

The current study aimed to investigate the effect of increasing ß-mannanase supplementation in diets containing copra meal (CM) on growth performance, meat quality, liver health, intestinal morphology, and nutrient utilization in broiler chickens.

Methods:

A total of 1,600 3-d-old Ross 308 broiler chickens (initial body weight [BW] ± SD = 43.3 ± 1.08 g) were randomly allotted to 1 of 5 treatment groups with 8 replicates. One group was fed a corn-soybean meal-based diet (control). Other 4 diets were prepared by inclusion of 10% commercial CM in the control diet with 0, 400, 800, and 1,600 U ß-mannanase/kg. Experiments lasted for 32 d.

Results:

Birds fed the control diet had less (p=0.001) feed conversion ratio (FCR) than those fed diets containing 10% CM without ß-mannanase supplementation. Increasing supplementation of ß-mannanase in diets containing 10% CM had no linear and quadratic effects on body weight gain, feed intake, and FCR in broiler chickens. The control diet had greater (p<0.01) apparent total tract retention (ATTR) of DM, GE, and N as compared to the diets containing 10% CM without ß-mannanase supplementation; however, no differences in the ATTR of Ca and P were identified between 2 diets. There were no linear and quadratic effects of increasing supplementation of ß-mannanase on the ATTR of DM, GE, N, Ca, and P in broiler diets containing 10% CM. Both inclusion of 10% CM and increasing supplementation of ß-mannanase in broiler diets did not affect apparent ME (AME) and N-corrected ME (AMEn) values in treatment diets.

Conclusion:

The use of 10% CM in broiler diets during growing and finishing period impairs growth performance by decreasing energy and nutrient utilization in diets. Increasing ß-mannanase supplementation in diets containing 10% CM has no positive effects on performance, meat quality, liver health, intestinal morphology, and nutrient utilization in broiler chickens.

Palabras clave

Broiler Chicken; Copra Meal; Energy and Nutrient Utilization; Growth Performance; ß-Mannanase

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Anim Biosci Año: 2024 Tipo del documento: Article Pais de publicación: