Supplementing corn-soybean meal diets with microbial phytase linearly improves phytate phosphorus utilization by weanling pigs1

Lei, Xin Gen; Ku, P. K.; Miller, E. R.; Yokoyama, M. T.

doi:10.2527/1993.71123359x

Cited by 148 publications

(76 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The reduced-nutrient diet supplemented with phytase promoted the best animal performance but did not differ significantly from the positivecontrol diet. These results are consistent with those obtained by Lei et al (1993), who also found positive effects of phytase supplementation on the weight gain of growing pigs. Many other studies have shown positive effects of phytase on the performance of pigs (Kies et al, 2006;Veum et al, 2006).…”

Section: Resultssupporting

confidence: 83%

Nutrient reduction in rations with phytase for growing pigs

et al. 2011

View full text Add to dashboard Cite

-Two experiments were conducted to evaluate the performance, the energy and nutrient balance and economic viability of production of growing pigs fed diets with reduced levels and phytase. In experiment 1, 60 barrows and gilts (initial weight 25 ± 1.72 kg) were housed in a randomized block design with three diets, ten replicates and two animals per experimental unit (one male and one female). One of the diets was formulated with a reduced level with phytase and evaluated in comparison to a positive-control diet that was formulated according to the nutritional recommendations for animals of this breed, and a negative-control diet without phytase. The different diets did not affect feed intake, but the diet with phytase promoted better final weight, daily weight gain and feed conversion, although it did not differ from the positive control diet. In experiment 2, 27 barrows (initial weight 49 ± 3.67 kg) were housed in random blocks with three diets and nine replicates with experimental plot represented by one animal. The diets did not affect the balance of energy and nutrients but had a significant effect on the efficiency of utilization of calcium and phosphorus, which was the lowest in animals that received the positive-control diet. Economic viability improved when nutrients were reduced and phytase was added in the ration. The addition of phytase (500 ftu/kg) in rations formulated with nutritional levels reduced for growing swines improves rearing productivity and it is economical viable.Key Words: diet formulation, enzyme, metabolism, nutrition, performance Redução de nutrientes em rações com fitase para suínos em crescimento RESUMO -Dois experimentos foram conduzidos para avaliar o desempenho, o balanço de energia e nutrientes e a viabilidade econômica da produção de suínos em crescimento alimentados com rações com níveis reduzidos e fitase. No experimento 1, 60 suínos machos castrados e fêmeas (peso inicial de 25 ± 1,72 kg) foram alojados em delineamento de blocos casualizados, com três dietas, dez repetições e dois animais por unidade experimental (macho e fêmea). Uma das dietas foi formulada com nível reduzido e com fitase e avaliada em comparação a uma dieta controle positivo, formulada conforme as recomendações nutricionais para animais da linhagem, e a uma dieta controle negativo, sem fitase. As dietas não influenciaram o consumo de ração, porém aquela com fitase promoveu melhor peso final, ganho de peso diário e conversão alimentar, embora não tenha diferido da controle positivo. No experimento 2, 27 suínos machos castrados (peso inicial de 49 ± 3,67 kg) foram alojados em blocos ao acaso com três dietas e nove repetições com parcela experimental representada por um animal. As dietas não afetaram o balanço de energia e nutrientes, mas tiveram efeito significativo na eficiência de utilização de cálcio e fósforo, que foi pior nos animais que receberam a dieta controle positivo. A viabilidade econômica melhorou com a redução de nutrientes e adição de fitase na ração. A suplementação de fitase (500...

show abstract

Section: Resultssupporting

confidence: 83%

Nutrient reduction in rations with phytase for growing pigs

et al. 2011

View full text Add to dashboard Cite

show abstract

“…These results were also observed by Lei et al (1993) who assessed supplementation with phytase in rations based on corn and soybean meal and rice meal at the levels of 0, 250, 500, and 750 FTU/kg for growing pigs and also observed a linear effect on feed conversion. Different results were reported by Murray et al (1997) who also used rations formulated with different ingredients than those used in the present study and obtained increase in weight gain of pigs that consumed rations supplemented with 700 and 1000 FTY/kg with a low level of available phosphorus.…”

Section: Resultssupporting

confidence: 64%

Phytase in rations of growing pigs: performance, blood parameters and bone mineral content

Silva¹,

Fialho

Freitas³

et al. 2004

Ciênc. agrotec.

View full text Add to dashboard Cite

It was intended with the present work to verify the effect of phytase on the performance, bone mineralization and content of plasma urea of swine. 80 swine (30 ± 3.1 kg/LW), crossbred (LD x LW) males and females, allocated to a randomized block design (RBD) with four treatments and five replicates. The treatments consisted of a growing swine diet on the basis of corn, soybean meal and defatted rice bran (DRB) supplemented with four levels of phytase (0, 400, 800 and 1200 FTU/kg) The diet was formulated to meet the requirements of growing swine except for available calcium and phosphorus, the levels of which were 0.64 and 0.25%, respectively. The enzyme phytase utilized was Natuphos 5000. Over the experimental period every eight days, blood of two animals per block was collected through a puncture in the sinus orbital, to determine the plasma urea content. At the final of the experimental period, two animals were slaughtered for collection of the metacarpus bone, aiming to verify the mineral content. The variables analyzed were: daily average weight gain (DAWG), daily average ration consumption (DARC), feed conversion (FC), content of plasma urea, content of ashes, calcium, phosphorus, manganese, zinc and magnesium in the bone. The phytase levels provided a linear improvement (P<0.05) on feed conversion and a quadratic effect on swine's plasma urea content. Phytase promoted a linear increase (P<0.05) on the content of calcium and phosphorus in the swine's metacarpus bone. The level of 750 FTU/kg provided the lowest plasma urea content. It is concluded that the use of the enzyme phytase in growing swine diets improved feed conversion, decreased the plasma urea content and increased the contents of calcium and phosphorus in the bone.Index terms: Enzyme, minerals, plasma, urea. RESUMOObjetivou-se, com o presente trabalho, verificar o efeito da fitase sobre o desempenho, mineralização óssea e teor de uréia no plasma de suínos. Foram utilizados 80 animais com 30 ± (3,1 kg), mestiços (LD x LW), machos e fêmeas, distribuídos em um delineamento em blocos casualisados (DBC) com quatro tratamentos e cinco repetições. Os tratamentos consistiram de uma ração à base de milho, farelo de soja e farelo de arroz desengordurado (FAD), suplementada com quatro níveis de fitase (0, 400, 800 e 1200 FTU/kg). A ração foi formulada para atender às exigências de suínos em crescimento, exceto para cálcio e fósforo disponíveis, cujos níveis foram 0,64 e 0,25 %, respectivamente. A enzima fitase utilizada foi a Natuphos 5000. Durante o período experimental, a cada sete dias, foi coletado sangue de dois animais por bloco, por meio de uma punção no sinus orbital, para determinar o teor de uréia no plasma. Ao final do período experimental, foram abatidos dois animais por parcela para coleta do osso metacarpo, objetivando verificar o teor de minerais. As variáveis analisadas foram: ganho de peso médio diário (GPMD), consumo de ração médio diário (CRMD), conversão alimentar (CA), teor de uréia no plasma e teor de cinzas, cálcio, fósforo no...

show abstract

“…However, the use of phytase can increase phosphorus retention by 50% and reduction in excretion by 42% (Lei et al, 1993).…”

Section: Anti-nutritional Factor Mode Of Action Methods Of Detoxificationmentioning

confidence: 99%

Soybean as a Feed Ingredient for Livestock and Poultry

Dei¹

2011

Recent Trends for Enhancing the Diversity and Quality of Soybean Products

View full text Add to dashboard Cite

Supplementing corn-soybean meal diets with microbial phytase linearly improves phytate phosphorus utilization by weanling pigs1

Cited by 148 publications

References 12 publications

Nutrient reduction in rations with phytase for growing pigs

Nutrient reduction in rations with phytase for growing pigs

Phytase in rations of growing pigs: performance, blood parameters and bone mineral content

Soybean as a Feed Ingredient for Livestock and Poultry

Contact Info

Product

Resources

About