Determination of the standardized ileal digestible calcium requirement of Ross broilers from hatch to day 14 post-hatch

Walk, Carrie L.; Aureli, Raffaella; Jenn, Pauline

doi:10.1016/j.aninu.2023.06.016

Animal Nutrition

2024

DOI: 10.1016/j.aninu.2023.06.016

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Determination of the standardized ileal digestible calcium requirement of Ross broilers from hatch to day 14 post-hatch

Carrie L. Walk,

Raffaella Aureli,

Pauline Jenn

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2024

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Cited by 2 publications

References 23 publications

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Determination of optimal dietary calcium levels under different sources of zinc in Jing tint 6 layer chicks from 15 to 42 d of age

Gong,

Shi,

Liu

et al. 2024

Poultry Science

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Determination of optimal dietary calcium levels under different sources of zinc in Jing tint 6 layer chicks from 15 to 42 d of age

Gong,

Shi,

Liu

et al. 2024

Poultry Science

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Assessment of Non-Phytate Phosphorus Requirements of Chinese Jing Tint 6 Layer Chicks from Hatch to Day 42

Gong,

Liu,

Shi

et al. 2024

Animals

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We aimed to estimate the non-phytate phosphorus (NPP) requirements of Chinese Jing Tint 6 layer chicks. We randomly allocated 720 birds to five treatments with six cages of 24 birds each, feeding them a corn–soybean diet containing 0.36%, 0.41%, 0.46%, 0.51%, and 0.56% NNP. The results showed that the body weight gain (BWG), tibial length, and apparent total tract digestibility coefficients (ATTDC) of P were affected (p < 0.05) by dietary NPP level. A quadratic broken-line analysis (p < 0.05) of BWG indicated that the optimal NPP for birds aged 1–14 d was 0.411%. Similarly, 0.409% of NPP met tibial growth needs. However, 0.394% of NPP was optimal for P utilization according to the ATTDC criterion. For 15–42 d birds, 0.466% NPP, as estimated by the BWG criterion, was sufficient for optimal growth without decreasing P utilization. Using the factorial method, NPP requirements were calculated as 0.367% and 0.439%, based on the maintenance factors and BWG for 1–14 and 15–42 d birds, respectively, to maintain normal growth. Combining the non-linear model with the factorial method, this study recommends dietary NPP levels of 0.367% and 0.439% for 1–14 and 15–42 d birds, respectively, to optimize P utilization without affecting performance.

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Determination of the standardized ileal digestible calcium requirement of Ross broilers from hatch to day 14 post-hatch

Cited by 2 publications

References 23 publications

Determination of optimal dietary calcium levels under different sources of zinc in Jing tint 6 layer chicks from 15 to 42 d of age

Determination of optimal dietary calcium levels under different sources of zinc in Jing tint 6 layer chicks from 15 to 42 d of age

Assessment of Non-Phytate Phosphorus Requirements of Chinese Jing Tint 6 Layer Chicks from Hatch to Day 42

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