Combination of non-protein nitrogen and N‑carbamylglutamate supplementation improves growth performance, nutrient digestibility and carcass characteristics in finishing pigs fed low protein diets

Li, P.L.; Wu, Fei; Wang, Y.M.; Wang, C.P.; Zhou, Junyan; Zeng, Xiaoli; Qiao, Shiyan

doi:10.1016/j.anifeedsci.2020.114753

Cited by 2 publications

(1 citation statement)

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“…The p -value for the asymptote was <0.001, for the slope it was 0.033, and for the breaking point it was 0.002. Where, if L-lysine is ≤breakpoint, then z1 = 0; if L-lysine is >breakpoint, then z1 = L-lysine − breakpoint [ 12 , 17 , 68 , 69 , 70 , 71 , 72 , 78 , 79 , 80 , 81 , 82 ].…”

Section: Figurementioning

confidence: 99%

Advances, Implications, and Limitations of Low-Crude-Protein Diets in Pig Production

Rocha

Duarte

Kim

2022

Animals

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Currently, five crystalline essential amino acids (Lys, Met, Thr, Trp, and Val) are generally used, allowing formulation of low-crude-protein (CP) diets. Moreover, Ile may also be used depending on its economic value and the specific feeding program. Experimentally, it has been shown that further reduced CP levels can be achieved by supplemental His, Leu, and Phe to the diets. However, decreasing the dietary CP level while maintaining optimal ratios of amino acids has shown contradictory effects on pigs’ growth performance. Due to the divergence in the literature and the importance for practical formulation strategies in the swine industry, a literature review and a meta-analysis were performed to estimate the minimum CP level that would not compromise pig performance. Based on the present review, there is a minimum CP level after which the growth performance of pigs can be compromised, even though diets are balanced for essential amino acids. Considering average daily gain and gain to feed, respectively, these levels were estimated to be 18.4% CP (95% confidence interval [CI]: 16.3 to 18.4) and 18.3% CP (95% CI: 17.4 to 19.2) for nursery, 16.1% CP (95% CI: 16.0 to 16.2) and 16.3% CP (95% CI: 14.5 to 18.0) for growing, and 11.6% CP (95% CI: 10.8 to 12.3) and 11.4% CP (95% CI: 10.3 to 12.5) for finishing pigs.

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Section: Figurementioning

confidence: 99%

Advances, Implications, and Limitations of Low-Crude-Protein Diets in Pig Production

Rocha

Duarte

Kim

2022

Animals

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Ammonium phosphate is a potential nitrogen supplement in nitrogen-limiting diets for growing pigs

Buchinski,

Camire,

Babatunde

et al. 2024

Can. J. Anim. Sci.

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Reduced protein diets may be limiting in dietary nitrogen (N). The objective of this study was to determine the impact of non-protein nitrogen (NPN) inclusion and lysine content on growth performance of growing pigs. Pen-housed growing pigs were randomly assigned to 1 of 6 dietary treatments to test impact of NPN inclusion and dietary lysine content for 28 d. Non-protein N inclusion increased feed efficiency and lean depth (P < 0.05). Final body weight increased with greater lysine (P < 0.05) but was not impacted by NPN (P > 0.05). Ammonium phosphate may be an appropriate N source in N-limiting diets for pigs.

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Combination of non-protein nitrogen and N‑carbamylglutamate supplementation improves growth performance, nutrient digestibility and carcass characteristics in finishing pigs fed low protein diets

Cited by 2 publications

References 39 publications

Advances, Implications, and Limitations of Low-Crude-Protein Diets in Pig Production

Advances, Implications, and Limitations of Low-Crude-Protein Diets in Pig Production

Ammonium phosphate is a potential nitrogen supplement in nitrogen-limiting diets for growing pigs

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