Performance, carcass traits, meat quality and economic analysis of feedlot of young bulls fed oilseeds with and without supplementation of vitamin E

Neto, Otávio Rodrigues Machado; Ladeira, Márcio Machado; Chizzotti, Antônio; Jorge, André Mendes; Oliveira, De; Carvalho, José Rodolfo Reis de; Ribeiro, Julimar do Sacramento

doi:10.1590/s1516-35982012000700027

Cited by 3 publications

(2 citation statements)

References 20 publications

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“…Throughout the slaughtering, animals were submitted to brain concussion, bloodletting by section of jugular vessels and evisceration. The carcasses of steers were divided in two halves, which were maintained in a cold chamber for 24 h. Samples from the longissimus lumborum muscle (2.5 cm thick) of the right half of carcasses were collected between 12th to 13th ribs to determine rib-eye area and backfat thickness using a checkered grid and a digital caliper rule, respectively [20]. …”

Section: Methodsmentioning

confidence: 99%

Influence of polymer-coated slow-release urea on total tract apparent digestibility, ruminal fermentation and performance of Nellore steers

Gardinal¹,

Calomeni²,

Cônsolo³

et al. 2016

Asian-Australas J Anim Sci

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ObjectiveTwo experiments were performed to evaluate the effects of coated slow-release urea on nutrient digestion, ruminal fermentation, nitrogen utilization, blood glucose and urea concentration (Exp 1), and average daily gain (ADG; Exp 2) of steers.MethodsExp 1: Eight ruminally fistulated steers [503±28.5 kg body weight (BW)] were distributed into a d 4×4 Latin square design and assigned to treatments: control (CON), feed grade urea (U2), polymer-coated slow-release urea A (SRA2), and polymer-coated slow-release urea B (SRB2). Dietary urea sources were set at 20 g/kg DM. Exp 2: 84 steers (350.5±26.5 kg initial BW) were distributed to treatments: CON, FGU at 10 or 20 g/kg diet DM (U1 and U2, respectively), coated SRA2 at 10 or 20 g/kg diet DM (SRA1 and SRA2, respectively), and coated SRB at 10 or 20 g/kg diet DM (SRB1 and SRB2, respectively).ResultsExp 1: Urea treatments (U2+SRA2+SRB2) decreased (7.4%, p = 0.03) the DM intake and increased (11.4%, p<0.01) crude protein digestibility. Coated slow-release urea (SRA2+SRB2) showed similar nutrient digestibility compwared to feed grade urea (FGU). However, steers fed SRB2 had higher (p = 0.02) DM digestibility compared to those fed SRA2. Urea sources did not affect ruminal fermentation when compared to CON. Although, coated slow-release urea showed lower (p = 0.01) concentration of NH3-N (−10.4%) and acetate to propionate ratio than U2. Coated slow-release urea showed lower (p = 0.02) urinary N and blood urea concentration compared to FGU. Exp 2: Urea sources decreased (p = 0.01) the ADG in relation to CON. Animals fed urea sources at 10 g/kg DM showed higher (12.33%, p = 0.01) ADG compared to those fed urea at 20 g/kg DM.ConclusionFeeding urea decreased the nutrient intake without largely affected the nutrient digestibility. In addition, polymer-coated slow-release urea sources decreased ruminal ammonia concentration and increased ruminal propionate production. Urea at 20 g/kg DM, regardless of source, decreased ADG compared both to CON and diets with urea at 10 g/kg DM.

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Section: Methodsmentioning

confidence: 99%

Influence of polymer-coated slow-release urea on total tract apparent digestibility, ruminal fermentation and performance of Nellore steers

Gardinal¹,

Calomeni²,

Cônsolo³

et al. 2016

Asian-Australas J Anim Sci

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“…To reduce the costs of the animal meat production, farmers are increasingly seeking alternative feed additives, particularly cheaper feedstuffs with desired qualities that enable the animal to reach a market weight and slaughter weight within the given rearing period. An alternative that attracts a great deal of interest is the use of concentrate, either solely or in a mixture with bypass fat [ 10 , 66 , 78 ]. However, excessive amounts of dietary lipids might result in a negative effect on fiber digestion in the rumen and may influence the quality of the meat and the cost of animal feed [ 75 ], which makes the decision to change to the alternative difficult.…”

Section: Discussionmentioning

confidence: 99%

Effects of Bypass Fat on Buffalo Carcass Characteristics, Meat Nutrient Contents and Profitability

Azmi

Amin

Ahmad

et al. 2021

Animals

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The deposition and distribution of buffalo body fats play a vital role in the quality of the buffalo carcass and are of great commercial value, since the carcass quality influences the profitability and consumer acceptability of ruminant meat. The current study examined the effect a mixture of 4% bypass fat and 26% concentrate supplementations in buffalo basal diet had on both the carcass characteristics and the proximate and fatty acid composition in longissimus thoracis et lumborum (LTL), supraspinatus (SS) and semitendinosus (ST) muscles of Murrah cross and swamp buffaloes. In addition, profit and loss analyses were performed to determine the profitability. This study employed a completely randomized 2 × 2 factorial arrangement with two diets, two breeds and four replicates per treatment. A total of sixteen buffaloes (eight buffaloes per breed, bodyweight 98.64 ± 1.93 kg) were randomly assigned into two dietary groups. The first group was given Diet A, which consisted of 70% Brachiaria decumbens + 30% concentrate, whereas the second group was given Diet B, which consisted of 70% Brachiaria decumbens + 26% concentrate + 4% bypass fat. The buffaloes were fed for 730 days before slaughter. The results showed that supplemented bypass fat significantly (p < 0.05) increased the pre-slaughter weight, hot and cold carcass weights, meat:fat ratio, pH at 24 h, moisture and crude protein of LTL, ST and SS, the ether extract of LTL and ST and the meat fatty acid of C16:0, C16:1, C18:1, PUFA n-6/n-3 and total MUFA. The carcass yield and carcass fat percentages, the ash content in ST, the EE in the SS muscle and the meat fatty acid of C18:3, total PUFA n-3, UFA/SFA and PUFA/SFA were significantly (p < 0.05) decreased. Furthermore, Murrah cross showed a significantly (p < 0.05) higher pre-slaughter weight, hot and cold carcass weights, carcass bone percentage and total fatty acid, but a lower (p < 0.05) meat:bone ratio, ash of LTL and CP of LTL and ST when compared to swamp buffaloes. No significant changes were found in the proximate composition of different types of muscle, but the ST muscle revealed significantly high C14:0, C16:0 and C18:1, and the SS muscle had high C18:2 and total fatty acid (p < 0.05). Supplementing using bypass fat increased the cost of buffalo feeding but resulted in a higher revenue and net profit. In conclusion, the concentrate and bypass fat supplementations in the buffalo diet could alter the nutrient compositions of buffalo meat without a detrimental effect on carcass characteristics, leading to a higher profit.

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Desempenho, características de carcaça e expressão de genes em tourinhos alimentados com lipídeos e monensina

Ladeira

Neto

Santarosa

et al. 2014

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar o desempenho, as características de carcaça e as suas correlações com as expressões gênicas em tourinhos. Quarenta animais Red Norte foram confinados e distribuídos em delineamento inteiramente casualizado, em arranjo fatorial 2x2, e alimentados com grãos de soja moídos ou gordura protegida, com ou sem inclusão de monensina. As dietas foram formuladas para serem isonitrogenadas, com teores de extrato etéreo semelhante (6,5%), e tiveram silagem de milho como volumoso (40%). O período experimental foi de 84 dias, precedido por 14 dias de adaptação. Foram avaliadas as expressões dos genes PPARA, SREBP1c e SCD1. Animais alimentados com gordura protegida tiveram maior ganho de peso nos primeiros 56 dias de confinamento. O uso da monensina não afetou o ganho de peso diário dos animais, mas proporcionou aumento do rendimento de carcaça. Houve correlação de -0,40 entre o ganho de peso dos animais e a expressão do SCD1. O uso de gordura protegida aumenta o desempenho dos animais no início do confinamento, e a monensina proporciona maior rendimento de carcaça.Termos para indexação: bovinocultura de corte, gordura protegida, ionóforos, PPARA, soja, SREBP1c. Performance, carcass traits, and gene expression in young bulls fed lipids and monensinAbstract -The objective of this work was to evaluate performance, carcass traits, and their correlation with gene expression in young bulls. Forty Red Norte animals were feedlot and distributed in a completely randomized design, using a 2x2 factorial arrangement, and fed ground soybean grains or rumen-protected fat, with or without monensin supplementation. Diets were formulated to be isonitrogenous, with similar ether extract contents (6.5%), and had corn silage as roughage (40%). The experimental period lasted 84 days, preceded by 14 days of adaptation. The expressions of the PPARA, SREBP1c and SCD1 genes were evaluated. Animals fed rumen-protected fat had greater average daily gain in the first 56 days of feedlot. Monensin did not affect the daily gain, but increased carcass weight. There was -0.40 correlation between animal daily gain and SCD1 expression. The use of rumen-protected fat increases animal performance at the beginning of feedlot, and monensin provides greater carcass weight.

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Performance, carcass traits, meat quality and economic analysis of feedlot of young bulls fed oilseeds with and without supplementation of vitamin E

Cited by 3 publications

References 20 publications

Influence of polymer-coated slow-release urea on total tract apparent digestibility, ruminal fermentation and performance of Nellore steers

Influence of polymer-coated slow-release urea on total tract apparent digestibility, ruminal fermentation and performance of Nellore steers

Effects of Bypass Fat on Buffalo Carcass Characteristics, Meat Nutrient Contents and Profitability

Desempenho, características de carcaça e expressão de genes em tourinhos alimentados com lipídeos e monensina

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