Desempenho de cordeiros e estimativa da digestibilidade do amido de dietas com diferentes fontes protéicas

Queiróz, Mário Adriano Ávila; Susin, Ivanete; Pires, Alexandre Vaz; Mendes, Clayton Quirino; Gentil, Renato Shinkai; Almeida, Omer Cavalcanti de; Amaral, Rodrigo de Souza; Mourão, Gerson Barreto

doi:10.1590/s0100-204x2008000900014

Cited by 21 publications

(30 citation statements)

References 20 publications

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“…Jardim et al (2000) found that the more the gastric contents, the lower the digestibility of forage ingested by animals. This is also a determinant factor in carcass yield, which it is affected by speed of passage of the feed and fasting period (Queiroz et al, 2008). Araújo et al (2004), using low-quality diets, observed that dry matter intake increased with increasing capacity of the rumen.…”

Section: Resultsmentioning

confidence: 99%

Performance and carcass traits of Santa Inês lambs finished with different sources of forage

Menezes

Louvandini²,

Esteves

et al. 2013

R. Bras. Zootec.

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-The objective of this study was to evaluate performance and biometrics of lambs fed different sources of forage. Twenty-four six-month-old Santa Inês female lambs were randomly allocated to four experimental diets and housed in individual stalls. They weighed on average 26.35±0.20 kg. The diets were coast cross hay (HAY), cassava hay (CAS), dehydrated by-product of pea crop (PEA) and saccharin (SAC). The diets were formulated with the same amount of protein and energy with fixed levels of forage (60%) and concentrate (40%). Adaptation to the diet took 7 days, with 45 days on experiment. Weights and biometric measurements were obtained every fortnight and feed intake three times a week. Rights half-carcasses were weighed and sectioned into retail cuts, rib, loin, shoulder, belly, neck and leg, which were weighed individually. Weight gain in lambs was significantly different between diets, with those fed saccharin gaining more. Overall, treatments did not significantly affect biometric measurements. There was a significant difference for feed intake and live weight at the end of the experiment. Animals fed PEA and SAC showed the best results. Average positive correlations were found between biometric measurements and live weight. Treatment PEA had heavier hot (14.36 kg) and cold (14.01 kg) carcass weights than the other groups. Hot carcass kill-out was higher for animals fed PEA as well as ham weight, belly, neck and heart girth. The weight of the abdominal viscera (%) for lambs fed CAS was greater than those fed SAC and PEA. The weights of the thoracic viscera as well as the liver, for lambs fed PEA were higher. The by-product of pea yielded best results, followed by saccharin, and can replace traditional forage sources in the region, providing similar results in terms of cuts and body components. These could be an alternative for feeding sheep in the dry season. The substitution of forages using by-product of pea and saccharin led to improved productivity over the coast-cross hay available in the Federal District -Brazil.

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Section: Resultsmentioning

confidence: 99%

Performance and carcass traits of Santa Inês lambs finished with different sources of forage

Menezes

Louvandini²,

Esteves

et al. 2013

R. Bras. Zootec.

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“…The addition of licury cake negatively influenced ECW and HCW (half carcass height), and LEA, consequently. Highly fermentable carbohydrates such as starch are important energy sources in ruminant feedlot systems because they foster carcass accumulation (Queiroz et al, 2008;Ítavo et al, 2014). Substituting corn for licury cake may have reduced this nutrient in the diet and, therefore, reduced LEA.…”

Section: Resultsmentioning

confidence: 99%

Licury Cake in Lamb Feed: Characteristics of Carcass and Non-Carcass Components

Santos

Carvalho

et al. 2015

Ciênc. agrotec.

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The use of alternative foods, such as agroindustrial residues, for animal feeding aims to reduce production costs and increase animal productivity. Therefore, the objective of this study was to evaluate the effect of different levels of licury cake added to the diet of non-standardbred lambs (NSB). The study involved 20 male castrated NSB lambs, with an average age of 120±5 days and initial and final average weights of 25±2 kg and 34±2 kg, respectively; the lambs were kept in a feedlot and distributed in a completely random block design for 75 days. Three isonitrogenic diets (17% protein) with three levels of licury cake supplementation (8, 16 and 24%) and a control diet (0% licury cake) were used. Elephant grass (Pennisetum purpureum) concentrate in a 50:50 ratio and the different levels of licuri cake were provided twice a day. The residue normality and variances compared by orthogonal and polynomial regression contrasts were verified for data analysis at 5% significance. The licury cake levels did not influence (P>0.05) the dry matter intake, minimum and maximum fat thickness, empty gastrointestinal tract, spleen, heart, kidneys, anterior and posterior quarters, muscle yield, marbling, other tissues or ash. There was a quadratic effect (P<0.05) for the average daily weight, skin yield and crude protein. Increasing the levels of licury cake reduced (P<0.05) real yield, loin eye area, and increased (P<0.05) leg yield, bone and moisture. A diet including up to 13% licury cake can be indicated as an alternative feeding source for feedlot NSB sheep.Index terms: Centesimal composition; byproduct; liver. RESUMOO uso de alimentos alternativos na dieta animal, como resíduos agroindustriais, tem como propósito reduzir os custos de produção e aumentar a produtividade animal. Nesse contexto, objetivou-se avaliar o efeito da inclusão de diferentes níveis de torta de licuri em dieta de cordeiros sem padrão racial definido (SPRD). Foram confinados 20 cordeiros, machos e castrados, com idade média de 120±5 dias, distribuídos em delineamento em blocos inteiramente casualizados, durante 75 dias. Foram utilizadas três dietas isonitrogenadas (17% de proteína), sendo três níveis de inclusão de torta de licuri (8, 16 e 24%) e uma ração testemunha (0%). Foi fornecido o capim elefante (Pennisetum purpureum) e concentrado na proporção de 50:50 e os diferentes níveis de torta, fornecidas duas vezes ao dia. Para análise dos dados, foi verificada a normalidade dos resíduos e as variâncias comparadas por contrastes ortogonais e regressão polinomial, considerando nível de significância de 5%. Os níveis de torta de licuri não influenciaram (P>0,05) o consumo de matéria seca, espessura de gordura mínima e máxima, trato gastrintestinal vazio, baço, coração, rins, quarto dianteiros e traseiros, rendimento de músculo, gordura intermuscular, outros tecidos e cinzas. Houve efeito quadrático (P<0,05) para ganho de peso médio diário, rendimento de pele e proteína bruta. Níveis crescentes de torta de licuri reduziram (P<0,05) o rendimento v...

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“…As médias encontradas para o GDM e CMS foram de 221 e 889 g, respectivamente, resultados que estão de acordo com os comumente encontrados para cordeiros da raça Santa Inês alimentados com dietas contendo alto teor de concentrado (Urano et al, 2006;Queiroz et al, 2008). O GDM verificado foi ligeiramente superior ao reportado por Rodrigues et al (2008a), que também avaliaram dietas com alto teor de concentrado (90% da MS) contendo PCD (68,4% da MS) e observaram GDM de 167 g, reforçando a ideia de que a PCUD in natura ou ensilada tem grande potencial como ingrediente energético na ração de cordeiros em terminação.…”

Section: Resultsunclassified

Desempenho, características da carcaça, digestibilidade aparente dos nutrientes, metabolismo de nitrogênio e parâmetros ruminais de cordeiros alimentados com rações contendo polpa cítrica úmida semidespectinada e/ou polpa cítrica desidratada

et al. 2011

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Desempenho, características da carcaça, digestibilidade aparente dos nutrientes, metabolismo de nitrogênio e parâmetros ruminais de cordeiros alimentados com rações contendo polpa cítrica úmida semidespectinada e/ou polpa cítrica desidratada Performance, carcass characteristics, apparent digestibility of nutrients, nitrogen metabolism and ruminal measures of lambs fed diets containing wet low pectin citrus pulp and/or dried citrus pulp ABSTRACT -The objective of this study was to determine the effects of partial replacement of dried citrus pulp (DCP)by wet low pectin citrus pulp (WLPCP), wet low pectin citrus pulp silage (WLPCPS) or wet low pectin citrus pulp silage with sodium benzoate (WLPCPS+B) on performance and carcass characteristics, apparent digestibility of nutrients, ruminal measures, and nitrogen metabolism of lambs. In the performance trial, 64 Santa Inês ram lambs were fed 95% concentrate and 5% sugarcane bagasse diets during 56 days. The experimental design was a randomized complete block (RCB). The control diet contained 69.5% DCP, while in the other treatments fresh or ensiled WLPCP replaced DCP by 30% on a DM basis.There were no differences in DMI, ADG or carcass characteristics. However, feed efficiency was greater for lambs fed WLPCP compared with lambs fed DCP. In the digestibility trial, 16 Santa Inês ram lambs, canulated in the rumen, were assigned to a RCB design. Animals were fed diets containing 85% of concentrate and 15% of sugarcane bagasse. The control diet contained 75.3% DCP. A portion (30%) of the DCP DM was replaced by WLPCP, WLPCPS or WLPCPS+B. There was no difference in DM, organic matter or crude protein apparent digestibilities, except for neutral detergent fiber digestibility. Additionally, ruminal ammonia concentration was higher in diets containing DCP compared with WLPCPS and WLPCPS+B. Nevertheless, no effects of treatments were seen on the other ruminal measures. Fresh or ensiled WLPCP can partially replace DCP in rations with high level of concentrate for feedlot lambs.

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Desempenho de cordeiros e estimativa da digestibilidade do amido de dietas com diferentes fontes protéicas

Cited by 21 publications

References 20 publications

Performance and carcass traits of Santa Inês lambs finished with different sources of forage

Performance and carcass traits of Santa Inês lambs finished with different sources of forage

Licury Cake in Lamb Feed: Characteristics of Carcass and Non-Carcass Components

Desempenho, características da carcaça, digestibilidade aparente dos nutrientes, metabolismo de nitrogênio e parâmetros ruminais de cordeiros alimentados com rações contendo polpa cítrica úmida semidespectinada e/ou polpa cítrica desidratada

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