Lysine requirement of starting barrows from two genetic groups fed on low crude protein diets

Fraga, Alessandro Luís; Moreira, Ivan; Furlan, Antônio Cláudio; Bastos, Alexandre Orio; Oliveira, Ricardo; Murakami, Alice Eiko

doi:10.1590/s1516-89132008000100007

Cited by 30 publications

(26 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Dry matter, moisture content, crude protein, ether extract and ash content of the carcasses were determined 1.14 1.14 1.14 1.14 1.14 1.14 Digestible tryptophan (%) 0.22 0.25 0.28 0.31 0.34 0.37 as described by Silva & Queiróz (2004), and rates of protein and fat deposition and energy retained in the carcass were calculated following methodologies described by Fraga et al (2008). To determinate the carcass yield, four quails (two males and two females) per experimental unit, with 35 days old, were selected by average weigh (±10%) of each experimental unit (a total of 20 birds per treatment) and subjected to four hours of fasting, then slaughtered by decapitation by scissors between the occipital and atlas bone.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Digestible tryptophan requirements of meat quails in the growth phase

Ton¹,

Furlan²,

Martins³

et al. 2012

R. Bras. Zootec.

Self Cite

View full text Add to dashboard Cite

-The objective of this experiment was to estimate the digestible tryptophan (DTrp) requirements for growing meat quails. In the first experiment (1-14 days of age), 1,950 quails were distributed in a completely randomized design, with six levels of DTrp (0.27; 0.30; 0.33; 0.36; 0.39 and 0.42% of diet), five replications and 65 quails per experimental unit.There was a linear increase of feed intake, tryptophan intake, weight gain and body weight with the DTrp levels increase. In the second experiment (15-35 days of age), 1,350 quails were distributed in a completely randomized design, with six levels of DTrp (0.22; 0.25; 0.28; 0.31; 0.34 and 0.37% of diet), five replications and 45 quails per experimental unit. There was a linear increase for tryptophan intake, carcass yield, ash levels and protein deposition rate with the DTrp levels increase.In the third experiment (28-35 days of age), conducted to determine the nitrogen balance, 150 males were housed in galvanized wire cages featuring drinker, feeder and individual metal tray lined with plastic to collect the excreta. The design was completely randomized, with six levels of DTrp (0.22; 0.25; 0.28; 0.31; 0.34 and 0.37% of diet), five replicates and five quails per experimental unit. Linear decrease was observed on the nitrogen balance and metabolization coefficient with the DTrp levels increase. The nutritional requirement of digestible tryptophan for maximum growing of meat quail, in the period from 1 to 14 days of age, is higher or equal to 0.42%; in the period from 15 to 35 days, it is 0.22%.

show abstract

Section: Methodsmentioning

confidence: 99%

“…Tryptophan is involved in the synthesis of niacin and serotonin, which is a key-molecule which controls the appetite and behavior. Thus, tryptophan is an essential amino acid required for maximum gain and feed efficiency (Fraiha, 2002).…”

Section: Introductionmentioning

confidence: 99%

Digestible tryptophan requirements of meat quails in the growth phase

Ton¹,

Furlan²,

Martins³

et al. 2012

R. Bras. Zootec.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The plasma nitrogen evaluation shows the adequate supply of amino acids in the diet, depending on both the quality and the quantity in its supply (COMA et al, 1995). The urea nitrogen is a good parameter to show that dietary amino acids have been used by pigs (FRAGA et al, 2008), and the concentration of urea in the blood can tell the nutritional condition of the animal, as well as quality of the protein that was provided (WEI; ZIMMERMAN, 2003).…”

Section: Experiments 2 -Performance Test and Blood Parametersmentioning

confidence: 99%

Dehydrated cassava co-product in starting piglets feeding

Castro¹,

Carvalho²,

Oliveira³

et al. 2017

SCA

View full text Add to dashboard Cite

Two experiments were carried out to determine the nutritional value of a dehydrated cassava co-product (DCC) and its effects on the performance and blood variables of piglets fed with different levels of DCC. In experiment I, a digestibility assay was performed and 30 whole-male crossbred piglets with initial body weight of 18.00 ± 0.673 kg were housed individually in metabolism cages and distributed in a completely randomized experimental design with 5 treatments, 6 replicates and one animal per experimental unit. A reference diet was formulated to meet the category nutritional requirements and the different levels of DCC replacement (6, 12, 18 and 24%) were used to replace the reference diet and composed the treatments. In experiment II, 120 piglets (60 whole males and 60 females) were used, with initial body weight of 13.05 ± 1.59 kg, distributed in a randomized complete block design with 5 treatments, 6 replicates and 4 animals per experimental unit. Treatments consisted of five feeds with increasing inclusion levels (0, 3, 6, 9 and 12%) of the DCC. The feed based on corn and soybean meal were formulated to meet the recommended levels in starting piglets feeding. The data were submitted for statistical analysis and, when presenting significant difference, the averages were compared by the Dunnet's test at 10 % significance. In the digestibility assay, the values of DCC's digestive energy and metabolizable energy of 3,022 and 2,984 kcal kg -1 in natural matter, respectively, were found. There was no significant effect (p > 0.10) of inclusion levels of DCC on the final weight and daily gain of weight however we observed a quadratic effect (p < 0.10) of the DCC levels on daily feed intake and feed conversion. For the analysis of blood parameters, the results showed that there was no effect (p > 0.10) of DCC levels on glucose and blood urea in the different treatments. The use of the dehydrated cassava co-product can be an energetic alternative to piglets in starting phase and can be used up to 12 %. Key words: Alternative food. Nutrition. Swine production. ResumoDois experimentos foram conduzidos, objetivando-se determinar o valor nutricional do Coproduto Desidratado de Mandioca (CDM) e seus efeitos no desempenho e nas variáveis sanguíneas de leitões alimentados com diferentes níveis do CDM. No experimento I, realizou-se um ensaio de digestibilidade e foram utilizados 30 leitões híbridos, machos inteiros, com peso vivo inicial de 18,00 ± 0,673 kg, alojados individualmente em gaiolas de metabolismo, e distribuídos em um delineamento experimental inteiramente casualizado, com 5 tratamentos, 6 repetições e um animal por unidade experimental. Uma ração referência foi formulada para atender as exigências nutricionais da categoria e diferentes níveis de substituição do CDM (6, 12, 18 e 24%) foram utilizados para substituir a ração referência, compondo os tratamentos. No experimento II, foram utilizados 120 leitões (60 machos inteiros e 60 fêmeas), com peso vivo inicial de 13,05 ± 1,59 kg, distribuídos em um ...

show abstract

“…For determination of protein deposition rates (PDR) and fat deposition rates (FDR) in the carcass (g/day) the methodology adapted by Fraga et al (2008) was used. A PDR was measured by comparing the chicks slaughtered at the end of the trial period with the additional group of five chicks slaughtered in the housing.…”

Section: Methodsmentioning

confidence: 99%

Levels of metabolizable energy and digestible lysine for broiler chicks 1-10 days of age

Nunes

Savoldi

Tsutsumi

et al. 2016

SCA

View full text Add to dashboard Cite

This study evaluated the effect of different levels of metabolizable energy (ME) and digestible lysine (DL) on the rate of protein deposition, rate deposition body fat and intestinal morphology of broiler chicks 1 to 10 days of age. The study design consisted of 1,152 broilers, weighing 52 ± 5 g, distributed in a completely randomized, 4x4 factorial design, consisting of four levels of ME (2700; 2825; 2950 and 3075 kcal/kg) and four levels of DL (1,080; 1,187; 1,295 and 1,403%), with 16 treatments and three replicates, with 24 poultry in each experimental unit. The protein deposition rate (PDR) and fat deposition rate (FDR) were not affected (P>0.05) by the ME, however, PDR was influenced linearly (P<0.05) by increasing lysine. There was an interaction (P <0.05) between the levels of ME and DL, whose increase resulted in a higher villus height of the duodenum, jejunum and a greater relation villus: crypt ratio of the ileum. Therefore, levels of DL and ME had positive effects on the intestinal development of broiler chicks in the pre-starter phase. Key words: Amino acid. Poultry farming. Energy density. Morphology. ResumoO experimento foi realizado com o objetivo de avaliar o efeito dos níveis de energia metabolizável (EM) e de lisina digestível (LD), sobre a taxa de deposição de proteína, taxa de deposição gordura corporal e morfometria intestinal de pintos de corte de 1 a 10 dias de idade. Foram utilizados 1.152 pintos de corte, com peso médio de 52±5g, distribuídos em delineamento inteiramente casualizado, em esquema fatorial 4x4, constituídos quatro níveis de EM (2700; 2825; 2950; e 3075 kcal.kg -1 ) e quatro níveis de LD (1,080; 1,187; 1,295 e 1,403%), com 16 tratamentos, três repetições e com 24 aves ME cada unidade experimental. A taxa de deposição de proteína (TDP) e de gordura (PDR) não foi influenciada (P>0,05) pelos níveis de EM, no entanto, a PDR foi influenciada de forma linear (P<0,05) pelos níveis crescentes de lisina. Houve interação (P<0,05) entre os níveis de EM e DL, cujo aumento nesses níveis proporcionaram maior altura das vilosidades do duodeno, jejuno e na relação vilo:cripta do íleo. Os níveis de lisina digestível e energia metabolizável apresentam efeito positivo sobre o desenvolvimento intestinal dos pintos de corte na fase pré-inicial. Palavras-chave: Aminoácido. Avicultura. Densidade energética. Morfometria.

show abstract

Lysine requirement of starting barrows from two genetic groups fed on low crude protein diets

Abstract: A trial was carried out to determine the lysine requirement for starting barrows fed on ideal

Cited by 30 publications

References 12 publications

Digestible tryptophan requirements of meat quails in the growth phase

Digestible tryptophan requirements of meat quails in the growth phase

Dehydrated cassava co-product in starting piglets feeding

Levels of metabolizable energy and digestible lysine for broiler chicks 1-10 days of age

Contact Info

Product

Resources

About