Low- and high-protein diets supplemented up to the fourth limiting amino acid for genetic lines of grower-finisher pigs

Souza, Fábio Nicory Costa; Gregory, Cristine Regina; Oliveira, Newton Tavares Escocard de; Castilha, Leandro Dalcin; Eyng, Cínthia; Nunes, Ricardo Vianna; Carvalho, Silvana Teixeira; Ribeiro, Cláudio Vaz Di Mambro; Carvalho, Paulo Levi de Oliveira

doi:10.1016/j.livsci.2022.105144

Cited by 3 publications

(2 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, studies have shown that it is necessary to adapt diets according to production systems and tropical conditions, considering genetics and environmental and health conditions (Paul et al, 2007;. Thus, evaluating different ingredients and diet formulations to meet the requirements of modern pig genetics (Rostagno et al, 2017), such as formulating low-crude protein diets (Castilha et al, 2013;Toledo et al, 2014;Souza et al, 2023), have shown positive effects mainly in reduced environmental impact, but starter pigs fed low CP-based diets grew more slowly (Ruusunen et al, 2007), and increased feed intake due to lower essential amino acid content in the diet (Schiavon et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Efeitos de dietas com baixo e alto teor de proteína bruta suplementadas até o quarto aminoácido limitante para dois cruzamentos comerciais de leitões iniciantes

Souza,

Genova,

Azevedo

et al. 2024

Sem. Ci. Agr.

Self Cite

View full text Add to dashboard Cite

Este estudo foi composto por dois experimentos conduzidos para avaliar os efeitos de dietas com baixo e alto teor de proteína bruta suplementadas até o quarto aminoácido limitante e dois cruzamentos comerciais sobre o desempenho zootécnico, concentração de ureia plasmática (CUP), viabilidade econômica, digestibilidade aparente de nutrientes, e balanço de nitrogênio em leitões iniciantes. No Exp. I, um total de 128 leitões (14,02 ± 1,96 kg de peso corporal inicial e 48 dias de idade) foram distribuídos baseado no peso corporal inicial em um delineamento de blocos casualizados com arranjo fatorial 2 × 2. Foram avaliados dois cruzamentos comerciais (DB e PIC) e duas dietas de proteína bruta (baixa proteína bruta, BPB, e alta proteína bruta, APB). Foram utilizados quatro tratamentos, oito repetições e quatro leitões por unidade experimental. Exp. II foi conduzido utilizando 24 leitões machos inteiros (20,00 ± 1,41 kg de peso corporal inicial) alojados em gaiolas metabólicas por 12 dias e distribuídos no mesmo desenho experimental do Expt. I (seis repetições). Os resultados do Exp. I sugerem que os leitões alimentados com APB apresentaram melhor desempenho zootécnico. Foi observado um aumento de 25,2% na CUP em leitões alimentados com APB. Houve aumento de 18,2% no índice de eficiência econômica quando os leitões foram alimentados com APB, e também foi observada redução no custo por kg de ganho de peso corporal. No Exp. II, os leitões alimentados com APB apresentaram maiores coeficientes de digestibilidade aparente dos nutrientes, proteína e energia digestíveis, consumo e absorção de N. Não houve efeito dos cruzamentos comerciais sobre as variáveis de desempenho e metabolismo. Conclui-se que as dietas APB, independente da genética, promoveram melhorias no desempenho e no índice de viabilidade econômica, mas aumentaram a CUP nos leitões. Além disso, as dietas APB influenciaram positivamente a digestibilidade aparente dos nutrientes e a ingestão e absorção de N.

show abstract

Section: Introductionmentioning

confidence: 99%

“…Genetic strains selection for high performance and lean growth has been investigated (Schiavon et al, 2018;Abeni et al, 2018). However, little attention has been focused on different levels of CP in formulations to maximize muscle development (Souza et al, 2023), nutrient assimilation, and performance in commercial crosses.…”

Section: Introductionmentioning

confidence: 99%

Efeitos de dietas com baixo e alto teor de proteína bruta suplementadas até o quarto aminoácido limitante para dois cruzamentos comerciais de leitões iniciantes

Souza,

Genova,

Azevedo

et al. 2024

Sem. Ci. Agr.

Self Cite

View full text Add to dashboard Cite

show abstract

Productive, Physiological, and Environmental Implications of Reducing Crude Protein Content in Swine Diets: A Review

de Almeida,

Latorre,

Alvarez-Rodriguez

2024

Animals

View full text Add to dashboard Cite

Pig production is one of the most important providers of high-quality proteins and amino acids (AAs) to human nutrition. In this sector, feeding has an important economic and environmental impact. A strategy to reduce production costs and negative sustainability effects is reducing dietary crude protein (CP) contents with or without AA supplementation. This review addresses the different aspects related to this strategy, particularly the effects on growth performance and pork traits in piglets and growing and finishing pigs, as well as the physiological molecular mechanisms’ underlying effects. Insight is also provided into the effects of dietary CP reduction on the productive performances of alternative pig production systems and breeding boars and sows. Finally, an overview is conducted on the effects of dietary CP reduction on ammonia, odor, and greenhouse gas emissions arising from pig production systems. Overall, CP reduction may lead to production losses, albeit they can be, to some extent, hindered by adequate AA supplementation. Losses are particularly relevant during the post-weaning phase, whereas in finishing pigs, it may bring additional benefits, such as high intramuscular fat contents in some markets or improved gut barrier function with benefits to the animals’ health and welfare, as well as decreased ammonia emissions to the environment.

show abstract

Reducing Dietary Protein Levels with Amino Acid Supplementation in Duroc Sire Line Finishing Pigs: Growth Performances, Carcass and Meat Traits and Nitrogen Balance in Males and Females

de Almeida,

Latorre,

Ripoll

et al. 2024

Animals

View full text Add to dashboard Cite

Crude protein (CP) reduction and amino acid (AAs) supplementation is an interesting cost-reducing strategy for environmental compliance. The objective of this work is to study productive performances of heavy Duroc X (Landrace X Large white) male and female pigs during the finishing stage under a 2% CP reduction with crystalline AA supplementation. A total of 60 entire male and 60 female pigs (means ± standard deviations: 109 ± 4.9 days of age; 67.9 ± 7.18 kg of body weight) were distributed in split-sex pens (6 pigs/pen) and fed ad libitum. Two isoenergetic diets were provided (145 and 125 g CP/kg with AA supplementation, control and low-CP) during the final 42 days of finishing period. Growth performance, carcass and meat traits were evaluated. The fixed effects of dietary treatment, sex and their interaction were considered and simple least squares models used. Males were 7.25% heavier (p < 0.001) and had 16% higher average daily gains (p < 0.0001) than females in both treatments with no differences in feed intake or feed conversion ratio (p > 0.05). Nitrogen efficiency was 35% higher in low-CP males. Little difference was found for most carcass and meat traits between treatments. Males had 7–8% higher loin subcutaneous fat thickness in both dietary treatments (p = 0.011). Males and females of the low-CP diet showed higher fat and saturated fat contents than controls (p = 0.020). A 20 g/kg CP reduction with AA supplementation is an efficient strategy during the finishing phase without productivity losses in heavy Duroc sire line genotypes of both sexes.

show abstract

Low- and high-protein diets supplemented up to the fourth limiting amino acid for genetic lines of grower-finisher pigs

Cited by 3 publications

References 37 publications

Efeitos de dietas com baixo e alto teor de proteína bruta suplementadas até o quarto aminoácido limitante para dois cruzamentos comerciais de leitões iniciantes

Efeitos de dietas com baixo e alto teor de proteína bruta suplementadas até o quarto aminoácido limitante para dois cruzamentos comerciais de leitões iniciantes

Productive, Physiological, and Environmental Implications of Reducing Crude Protein Content in Swine Diets: A Review

Reducing Dietary Protein Levels with Amino Acid Supplementation in Duroc Sire Line Finishing Pigs: Growth Performances, Carcass and Meat Traits and Nitrogen Balance in Males and Females

Contact Info

Product

Resources

About