Efficiency of metabolizable energy utilization for maintenance and gain and evaluation of Small Ruminant Nutrition System model in Santa Ines sheep

Filho, José Gilson Louzada Regadas; Pereira, Elzânia Sales; Villarroel, Arturo Bernardo Selaive; Pimentel, Patrícia Guimarães; Fontenele, Rildson Melo; Costa, Marcus Roberto Góes Ferreira; Maia, Iana Sérvulo Gomes; Sombra, Weberte Alan

doi:10.1590/s1516-35982011001100038

Cited by 13 publications

(18 citation statements)

References 13 publications

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“…As the lambs aged, their serum levels of total protein decreased linearly, probably due to increased protein demand for muscle tissue deposition, which, during the lamb's initial life phase, is on the rise (Resende, Silva, Lima, & Teixeira, 2008;Regadas Filho et al, 2011 ).…”

Section: Resultsmentioning

confidence: 99%

<b>Inclusion of propylene glycol in the diet of sheep and its effect on their lambs’ protein and mineral metabolites

Santos

Macedo

Silva

et al. 2017

Acta Sci. Anim. Sci.

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ABSTRACT. The aim of this study was to assess the effect of propylene glycol (PG) added to the water sheep drank during lactation on protein and mineral metabolites of their suckling lambs. We assessed 24 lambs born to sheep fed levels of propylene glycol in the water (0; 1.5; 3.0 and 4.5%). The sheep were subdivided according to a completely randomized design, in a split-plot scheme. There was no interaction effect between lamb age and amount of PG provided to the sheep on the concentration of protein and mineral metabolites of the lambs. The concentration of total protein, globulin, and albumin: globulin ratio, uric acid and creatinine in the lambs was not affected by the inclusion of PG (p > 0.05). The concentration of urea and magnesium in the lambs presented a quadratic response as a function of the addition of PG; there was linear response for albumin concentration. The addition of PG to the sheep's diet and the lambs' age affect the concentration of protein and mineral metabolites in the lambs. However, using PG to feed lactating sheep does not have negative effects on the lambs' blood parameters, as evidenced by the absence of nutritional deficiency (protein and minerals) in the suckling lambs.Keywords: albumin, globulin, sheep, protein, urea, water.Inclusão de propilenoglicol na dieta de ovelhas e efeito nos metabólitos proteicos e minerais de suas crias RESUMO. Objetivou-se avaliar o efeito da inclusão do propilenoglicol na água de ovelhas durante a lactação sobre os metabólitos proteicos e minerais de suas crias. Foram avaliados 24 cordeiros (as), filhos (as) de ovelhas que receberam níveis de propilenoglicol (0; 1,5; 3,0 e 4,5%) na água. As ovelhas foram distribuídas em delineamento inteiramente casualizado em esquema de parcela subdividida. Não houve efeito de interação entre a idade dos cordeiros (a)s e a quantidade(s) de propilenoglicol oferecido para as mães na concentração dos metabólitos proteicos e minerais dos cordeiros. A concentração de proteínas totais, globulinas, relação albumina:globulinas, ácido úrico e creatinina nos cordeiros não foi afetada pela inclusão de propilenoglicol na água das matrizes. A concentração de ureia e magnésio nos cordeiros apresentou resposta quadrática em função da inclusão de propilenoglicol na dieta das ovelhas, sendo que para a concentração de albumina houve resposta linear. A inclusão de propilenoglicol na dieta das ovelhas e a idade dos cordeiros alteram a concentração dos metabólitos proteicos e minerais nas crias. Contudo, a utilização do propilenoglicol na alimentação de ovelhas lactantes não proporciona efeitos negativos nos parâmetros sanguíneos dos cordeiros, o que é evidenciado pela ausência de déficit nutricional (proteína e minerais) nos cordeiros lactentes.

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Section: Resultsmentioning

confidence: 99%

<b>Inclusion of propylene glycol in the diet of sheep and its effect on their lambs’ protein and mineral metabolites

Santos

Macedo

Silva

et al. 2017

Acta Sci. Anim. Sci.

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“…These results confirm the values described by Gonzaga Neto et al (2005), who also reported an increase of 0.66 to 0.68 km as the concentrate was increased in the Morada Nova lamb diet. Regadas Filho et al (2011) and Oliveira et al (2014) observed an increase from 0.68 to 0.73 km and 0.59 to 0.71 km, respectively, as the energy was incremented in the Santa Ines sheep diet. The metabolizable energy efficiency for weight gain was directly related to gain composition (GARRETT, 1980).…”

Section: Figure 1 Exponential Relationship Between Heat Production (mentioning

confidence: 87%

“…Protein deposition is energetically less efficient than fat synthesis because the synthesis and degradation (turnover) of body protein reduces the energy efficiency of its accumulation (GARRETT, 1980;GEAY, 1984;OWENS et al, 1995). However, fat deposition at high levels, as observed in early animals, may reduce the overall efficiency of utilization of metabolizable energy for weight gain due to the high energy required to maintain the same body mass as in late animals (REGADAS FILHO et al, 2011). High fat deposition is a biological need for animals adapted to regions with seasonality, as this necessitates the storage of fat as an energy reserve source, which may explain the reduced efficiency of utilization of metabolizable energy for weight gain.…”

Section: Figure 1 Exponential Relationship Between Heat Production (mentioning

confidence: 99%

“…Several models predict animal responses to feed (REGADAS FILHO et al, 2011), climate and animal inputs. Among them, the model Cornell Net Carbohydrate and Protein System -Sheep (CNCPS-S) (CANNAS et al, 2004) and, more recently, the Small Ruminant Nutrition System (SRNS) (TEDESCHI; FOX; RUSSELL, 2000) are the most prominent.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the accuracy of such estimates for specific breeds used in semiarid regions must be thoroughly assessed (REGADAS FILHO et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Dietetic requirements and evaluation of a small ruminant nutrition system model in Morada Nova lambs

et al. 2015

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This study was carried out to estimate efficiencies of the utilization of metabolizable energy for maintenance (km) and weight gain (kg) and to evaluate the Small Ruminant Nutrition System (SRNS) model in predicting dry matter intake (DMI) and average daily gain (ADG) of growing Morada Nova lambs. The animals were non-castrated and two months of age, with initial body weights averaging 12.05 ± 1.81 kg. Eight animals were slaughtered at the beginning of the trial as a reference group, in order to estimate initial empty body weight and body composition. The remaining animals were assigned to a randomized block design with eight replications per block and five diets with increasing metabolizable energy levels (0.96, 1.28, 1.72, 2.18 and 2.62 Mcal/kg of dry matter (DM)). The metabolizable energy use efficiencies for maintenance and for weight gain were calculated from the relationship between the dietary net energy for maintenance and gain and ME concentration in the diets. Evaluation of the SRNS model was performed by adjustment of simple linear regression model between the predicted (independent variable) and observed (dependent variable) values. The efficiency of ME utilization for maintenance (0.96 Mcal/kg DM) was 0.24 and decreased (0.60 to 0.40) for the other treatments with increasing energy content. The DMI and ADG predicted by the SRNS model did not differ (P≤0.05) from the observed values. Thus, the SRNS model can be used to estimate the DMI and ADG in feedlot Morada Nova lambs. Key words: Crude protein, metabolizability, nutritional requirement ResumoO estudo foi conduzido para estimar as eficiências de utilização da energia metabolizável (EM) para mantença (km) e ganho de peso (kg) e avaliação do modelo Small Ruminant Nutrition System (SRNS) para predição do consumo de matéria seca (CMS) e ganho médio diário (GMD) de cordeiros Morada Nova em crescimento. Os animais não castrados e com dois meses de idade, apresentaram peso corporal médio inicial de 12,05 ± 1,81 kg. Oito animais foram abatidos no início do experimento como grupo referência, com o objetivo de estimar o peso do corpo vazio inicial e a composição corporal. Os animais remanescentes foram distribuídos em delineamento em blocos inteiramente casualizados com oito repetições por bloco e cinco dietas com níveis crescentes de energia metabolizável (0,96, 1,28, 1,72, 2,18 e 2.62 Mcal/kg de matéria seca (MS)). As eficiências de uso da energia metabolizável para mantença e ganho de peso foram calculados a partir da relação entre a energia líquida dietética para mantença e ganho e a concentração de EM nas dietas. A avaliação do modelo SRNS foi realizada por meio do ajuste do modelo linear de regressão simples entre os valores preditos (variável independente) e observados (variável dependente). A eficiência de utilização da EM para mantença (0,96 Mcal/kg MS) foi 0,24 e diminuiu (0,60 para 0,40) para os demais tratamentos com o aumento do nível de energia. O CMS e o GMD preditos pelo modelo SRNS não diferiram (P≤0,05) dos valores observados. Ass...

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Seasonal dynamics on nutritive value, chemical estimates and in vitro dry matter degradability of some woody species found in rangelands of South Africa

2021

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Unlocking browse species in semi-arid regions can be a key to improving the livestock productivity. The research was conducted to assess the browse species variation in chemical composition and in vitro dry matter degradability as influenced by seasonal (summer and winter) changes. Leaves from ten randomly selected browsable trees from sixteen species (Vachellia karroo, Senegalia nigrescens, Vachellia nilotica, Balanites maughamii, Berchemia discolor, Berchemia zeyheri, Bridelia mollis, Combretum collinum, Combretum imberbe, Dalbergia melanoxylon, Dichrostachys cinerea, Grewia monticola, Grewia occidentalis, Melia azedarach, Ormocarpum kirkii and Ziziphus mucronata) were harvested before defoliation from the site in two seasons (summer and winter) and dried at room temperature and then ground for analysis. Two-way analysis was used to analyse chemical composition and in vitro ruminal dry matter degradability. Melia azedarach (343.7 g/kg DM) had the highest (p < 0.0001) CP content in summer. In winter, B. maughamii (210.3 g/kg DM) had the highest (p < 0.05) crude protein content. Combretum collinum (2.90 Mcal/kg) had a highest (p < 0.0001) metabolizable energy value in summer. Bridelia mollis, B. maughamii, B. discolor, C. collinum, C. imberbe, O. kirkii, S. nigrescens, V. nilotica, G. occidentalis and B. zeyheri had the same (p > 0.0001) dry matter degradability (DMD) 48 values across two seasons. In both seasons, most of these browse species have the potential to supplement low quality natural grasses because they go beyond the minimum requirement of protein and have coherent amounts of fibre concentration. There is a need to assess the bioactive compounds found in these browse species for the amelioration and also to maximize browsing of these species.

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Efficiency of metabolizable energy utilization for maintenance and gain and evaluation of Small Ruminant Nutrition System model in Santa Ines sheep

Cited by 13 publications

References 13 publications

<b>Inclusion of propylene glycol in the diet of sheep and its effect on their lambs’ protein and mineral metabolites

<b>Inclusion of propylene glycol in the diet of sheep and its effect on their lambs’ protein and mineral metabolites

Dietetic requirements and evaluation of a small ruminant nutrition system model in Morada Nova lambs

Seasonal dynamics on nutritive value, chemical estimates and in vitro dry matter degradability of some woody species found in rangelands of South Africa

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