Exigências de metionina + cistina digestível para aves de corte ISA Label criadas em semiconfinamento

Nascimento, Dáphinne Cardoso Nagib; Sakomura, Nilva Kazue; Siqueira, Jefferson Costa de; Pinheiro, Sandra Regina Freitas; Fernandes, João Batista Kochenborger; Furlan, Renato Luís

doi:10.1590/s1516-35982009000500013

Cited by 13 publications

(4 citation statements)

References 17 publications

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“…Calcium comes mainly from intestinal absorption and bone and kidney resorption, which is mobilized from the blood to the uterus very quickly [ 3 – 5 ] two importants ephitelium calcium carries are Calbindin-D28k and TRPV6 [ 4 – 7 ]. Nascimento et al [ 8 ] stated that 70% of the production cost is based on food, and for this reason there is a need to develop balanced diets according to the needs of the birds, enabling them to use the diet with maximum efficiency.…”

Section: Introductionmentioning

confidence: 99%

Methionine supplementing effects on intestine, liver and uterus morphology, and on positivity and expression of Calbindin-D28k and TRPV6 epithelial calcium carriers in laying quail in thermoneutral conditions and under thermal stress

et al. 2021

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This study aimed to provide the performance, localization and expression of the epithelial calcium transporter channels Calbindin-D28k (Calb) and TRPV6, and of the morphology of the digestive and reproductive system of laying quail under heat stress (HS), and with methionine supplementation (MS). This study characterized the positivity (immunohistochemistry) and expression (real-time PCR) of calcium channels in the kidneys, intestine and uterus of 504 laying quails under different MS (100, 110 and 120%) and temperatures (20, 24, 28 and 32°C). The animals under HS (32°C) had lower villus height, villus:crypt ratio, and goblet cell index in the duodenum and jejunum, fewer secondary and tertiary uterine folds, smaller hepatic steatosis, and increased number of distal convoluted renal tubules (CT) positive to Calb, and increased positivity in proximal CTs. Deleterious effects of HS were minimized with MS for: duodenal crypts, number of goblet cells of the jejunum, number of uterine folds, decreased Calb positivity in intestines and kidney, increased positivity of Calb in the uterus and increased TRPV6 gene expression in the kidney (P≤0.05). Epithelial calcium transporters were altered due to less need for calcium absorption and reabsorption due to more calcium available with the MS, increasing egg production in HS and quality in termoneutrality (P≤0.05). MS further increased intestinal villus absorption area and height, increased steatosis, decreased Calb positivity in the intestine and kidney, increased uterine positivity of Calb, and increase Calb and TRPV6 expression in the kidney (P≤0.001) under thermoneutrality. It was concluded that the use of MS (120%) is justifiable in order to partially reverse the deleterious effects of HS on the production, in the epithelial calcium carriers, and in the digestory and reproductive morphology of laying quail.

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Section: Introductionmentioning

confidence: 99%

Methionine supplementing effects on intestine, liver and uterus morphology, and on positivity and expression of Calbindin-D28k and TRPV6 epithelial calcium carriers in laying quail in thermoneutral conditions and under thermal stress

et al. 2021

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“…Segundo Oviedo-Rondón et al (2002), os modelos de natureza linear são amplamente utilizados na avicultura por serem facilmente implementados nas análises estatísticas. Pack et al (2003) salientaram que a popularidade desses modelos ocorre pela sua interpretação simplificada das respostas biológicas, possibilitando a determinação matemática de um único valor do nutriente testado, considerado como sendo a exigência.…”

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Níveis de lisina em rações para frangos de corte determinados com base em uma abordagem econômica

et al. 2011

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RESUMO -O objetivo neste estudo foi estimar os níveis ótimos de lisina digestível em rações para frangos de corte em crescimento (22 a 35 dias) e terminação (35 a 42 dias) com base na análise econômica da alimentação. Foram conduzidos dois experimentos, cada um com 600 frangos de corte machos da linhagem Cobb 500 distribuídos em delineamento inteiramente casualizado, com cinco tratamentos e seis repetições de 20 aves. Em cada fase, os tratamentos consistiram de níveis crescentes de lisina digestível nas rações. Os dados de conversão alimentar foram submetidos à análise de variância e posteriormente a análises de regressão utilizando-se um modelo não-linear exponencial. Com base nas equações exponenciais ajustadas para cada fase de criação, foram calculadas a variação do custo com alimentação e a margem por kg de ganho de peso. Em cada fase, foi considerado nível ótimo de lisina digestível aquele capaz de proporcionar o menor custo com alimentação e a maior margem por kg de ganho de peso. Considerando o preço da L-lisina HCl (78,5%) de R$ 11,78, os níveis ótimos de lisina digestível nas rações de crescimento e terminação são de 1,150 e 0,980%, respectivamente. Entretanto, se o preço desta fonte cristalina aumentar para R$ 14,13, os níveis ótimos nas rações reduzirão para 1,11 e 0,950%, respectivamente.Palavras-chave: aminoácidos, avicultura, desempenho, rentabilidade, viabilidade econômica Lysine levels in diets of broilers determined based on economic approach ABSTRACT -The objective of this study was to estimate the optimum digestible lysine levels in diets for broilers on growing (22 to 35 days) and finishing (35 to 42 days) phases, based on economic analysis of food. Two experiments were conducted, each one using 600 Cobb 500 male broilers, distributed in a completely randomized design with five treatments and six replicates of 20 birds. Treatments consisted of increasing digestible lysine levels in the diet. The feed:gain relation data were submitted to ANOVA and to regression analyses using an exponential model. Based on adjusted equations for each phase, the change in food cost and margin per kg of weight gain was calculated. At each phase the optimum lysine level was considered as one to provide the lowest food cost and higher margin per kg of weight gain. Considering the price of L-lysine HCl (78.5%) of R$ 11.78, the optimum lysine levels in diets of growing and finishing poultry were estimated at 1.150 and 0.980% respectively. However, if the price of this source rises to R$ 14.13, the optimum lysine levels in diets will be reduced to 1.11 and 0.950% respectively.Key Words: amino acids, economic viability, performance, poultry science, profitability Revista Brasileira de Zootecnia IntroduçãoO principal objetivo da indústria avícola moderna é a rentabilidade, que pode ser definida como o retorno financeiro obtido a partir do capital empregado. Contudo, os estudos tradicionalmente conduzidos para definir as exigências de aminoácidos de frangos de corte não consideram variáveis econômicas. Baseiam-se apen...

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“…Calcium comes mainly from intestinal absorption and bone resorption, which is mobilized from the blood to the uterus very quickly [4, 5]. Nascimento et al [6] stated that 70% of the production cost is based on food, and for this reason there is a need to develop balanced diets according to the needs of the birds, enabling them to use the diet with maximum efficiency.…”

Section: Introductionmentioning

confidence: 99%

Effects of methionine supplementing on intestine, liver and uterus morphology, and on positivity and expression of calbindin-D28k and TRPV6 calcium carriers in laying quails in thermoneutral conditions and under thermal stress

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Cruz

et al. 2020

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23The aim of this study was to provide support for the performance, localization and expression of the 24 epithelial calcium transporter channels, calbindin-D28k (Calb) and TRPV6, and of the morphology of the 25 digestive and reproductive system of laying quails under heat stress, and with methionine 26 supplementation. Therefore, the present study characterized the positivity (immunohistochemistry) and 27 expression (real-time PCR) of calcium channels (Calb and TRPV6) in the kidneys, intestine and uterus of 28 504 laying quails that were submitted to different methionine supplementation (100, 110 and 120%) and 29 temperatures (20, 24, 28 and 32ºC). The animals under thermal stress had lower villus height, villus:crypt 30 ratio, and goblet cell index in the duodenum and jejunum, fewer secondary and tertiary uterine folds, 31 smaller hepatic steatosis, and increased number of distal convoluted renal tubules (CT) positive to Calb 32 (protein), and increased positivity in proximal CTs. The deleterious effects of heat stress were minimized 33 with methionine supplementation for the following variables: duodenal crypts, number of goblet cells of 34 the jejunum, number of uterine folds, decreased Calb positivity in intestines and kidney, increased 35 positivity of Calb in the uterus and increased TRPV6 gene expression in the kidney. Calcium transporters 36 were altered due to less need for calcium absorption and reabsorption due to more calcium available with 37 the supplementation, increasing egg production and quality. Methionine supplementation further 38 increased intestinal villus absorption area and height, increased steatosis, decreased Calb positivity in the 39 intestine and kidney, increased uterine positivity and Calb expression, and increased TRPV6 expression 40 in the uterus under thermoneutrality. This is the first study that describes the gene and protein expression 41 of calcium transporters in the intestine, kidney and uterus of laying quails, and concludes that the use of 42 methionine supplementation is justifiable in order to partially reverse the deleterious effects of thermal 43 stress on the production. 44 45 46 3 47 65Methionine, classified as an essential amino acid [9], is also the first limiting factor in poultry 66 feed, and is essential for the maintenance, growth, production, and development of feathers [10]. In 67 addition to the productive responses obtained with methionine supplementation in laying hens, studies of 68 the morphological analyses of the laying digestive and reproductive system of broilers and light birds 69 indicate favorable quantitative and qualitative changes, such as an increase in egg mass by 10%. [11,12], 70 decreased laying fat [13], increased eggshell thickness [14], and increased intestinal villi [15], which 71 provide and technically justify the improvement in zootechnical indexes of these animals with methionine 72 use [15][16][17][18]. 73Evaluating the existing literature [15][16][17][18], diets supplemented with methionine at levels above 74 NRC (Nat...

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Exigências de metionina + cistina digestível para aves de corte ISA Label criadas em semiconfinamento

Cited by 13 publications

References 17 publications

Methionine supplementing effects on intestine, liver and uterus morphology, and on positivity and expression of Calbindin-D28k and TRPV6 epithelial calcium carriers in laying quail in thermoneutral conditions and under thermal stress

Methionine supplementing effects on intestine, liver and uterus morphology, and on positivity and expression of Calbindin-D28k and TRPV6 epithelial calcium carriers in laying quail in thermoneutral conditions and under thermal stress

Níveis de lisina em rações para frangos de corte determinados com base em uma abordagem econômica

Effects of methionine supplementing on intestine, liver and uterus morphology, and on positivity and expression of calbindin-D28k and TRPV6 calcium carriers in laying quails in thermoneutral conditions and under thermal stress

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