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Economic analysis, performance, and feed efficiency in feedlot lambs R. Bras. Zootec.
Lima,Natália Ludmila Lins; Ribeiro,Carolina Resende de Freitas; Sá,Hemilly Cristina Menezes de; Leopoldino-Júnior,Izac; Cavalcanti,Luigi Francis Lima; Santana,Ronan Aparecido Valadares; Furusho-Garcia,Iraides Ferreira; Pereira,Idalmo Garcia.
ABSTRACT The objective of this study was to evaluate residual feed intake (RFI), residual intake and body weight gain (RIG) and their relationship with other traits of efficiency, performance, and economic analysis of sheep. Lambs (n = 102) were evaluated during 56 days and a herd consisting of 500 ewes was simulated with the mean of dry matter intake (DMI) and final body weight of the lambs, the same as that of the experimental lambs. The lambs were fed hay-based diet of Tifton 85 (Cynodon spp.), corn, and soybean in the voluminous:concentrate ratio of 35:65. Residual feed intake and RIG were correlated with DMI, feed conversion ratio, and feed efficiency. Residual intake and body weight gain were positively correlated with average daily gain, relative...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cost; Profit; Revenue; RFI; RIG; Sheep.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017001000821
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Intake and ingestive behavior of rams fed with increasing inclusions of babassu endocarp meal I in their diet (Orbignya spp.) Ciência Rural
Sá,Hemilly Cristina Menezes de; Borges,Iran; Macedo Junior,Gilberto de Lima; Neiva,José Neuman Miranda; Silva,Veridiana Basoni; Sousa,Jhone Tallison Lira de.
The objective of this work was to investigate the ingestive behavior of sheep fed with different inclusions of babassu endocarp meal I. The animals receive isofibrous, isoenergetic and isonitrogenous diets containing the by-product in increasing levels of inclusion (zero; 7,5%; 15%; 22,5%). Twenty rams were used in this study and distributed in four treatments with five repetitions each. The ingestive behavior was conducted over a period of 24 hours, with visual observations at 5 minutes intervals and the variables being: idle, ruminating, feeding and chewing. The study demonstrated that the dry matter intake in function of the body weight and the metabolic weight decreased linearly as the babassu endocarp meal I was included in the diet. The feeding,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: By product; Fiber; Lambs; Processing; Ruminant.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014001102084
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Performance and carcass characteristics of lambs fed a solution of cheese whey during feedlot and pre-slaughter lairage R. Bras. Zootec.
Silva,Fredson Vieira e; Borges,Iran; Sá,Hemilly Cristina Menezes de; Martins,Tássia Ludmila Teles; Lana,Ângela Maria Quintão; Borges,Ana Luiza Costa Cruz; Moura,Marília Aparecida Fidelis e; Costa,Hélio Henrique Araújo.
ABSTRACT The objective of this study was to evaluate performance and carcass and meat characteristics of lambs fed a solution of cheese whey plus water (100 g kg−1 dry matter) (CW) during feedlot and pre-slaughter lairage. Data were analyzed as a 2 × 2 factorial (place – feedlot and slaughterhouse, food – water or CW). We evaluated the following treatments (feedlot/slaughterhouse): CW/CW, CW/water, water/CW, and control (water/water). The lambs were given a balanced diet for 70 days in the feedlot. Slaughter started 12 h after the animals arrived at the slaughterhouse. Dry matter intake, gain-to-feed ratio, average daily gain, and body weight of lambs fed CW were similar to those of control lambs. The water/CW group consumed less of this solution than the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carcass quality; Meat characteristics; Sheep; Slaughterhouse; Welfare.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100601
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