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Prediction of carcass tissue composition of F1 crossbred goats finished on native pasture
Silva, Rayana de Medeiros;Pereira Filho, José Morais;Silva, Aderbal Marcos de Azevêdo;Cezar, Marcílio Fontes;Silva, Anderson Luiz Nascimento da;Medeiros, Ariosvaldo Nunes de;
Revista Brasileira de Zootecnia , 2011, DOI: 10.1590/S1516-35982011000100026
Abstract: the objective of this study was to estimate tissue composition of the carcass from physical composition of commercial cuts of f1 crossbred goats (boer with females of non-defined racial standard) finished on native pasture with four levels of supplementation with concentrate (0.0; 0.5; 1.0 and 1.5% of bw in dry matter). it was used 24 non-castrated animals at initial body weight of 15.52 kg and at 120 days of age. the carcass was sectioned in the half, and from the lefthalf carcass, the following cuts were detached: leg, loin, ribs, shoulder and neck, which were dissected in muscle, bone and fat. carcass weight and yield were predicted from the weight and yield of tissues in the commercial cuts by regression analysis. all the cuts can be used to predict muscle and fat weight in the carcass. for the muscle, the relationship was linear and positive in the cuts leg, ribs, shoulder and neck, and cubic in the loin; for all the cuts, fat kept a linear relationship with the carcass. muscle and fat yield of all the commercial cuts showed a positive linear relationship with carcass yield, except for rib fat, for which a cubic relationship was found. considering all the results obtained and using the relationship with the highest determination coefficient, the ribs were the cut that provided the best estimate of the carcass muscle and fat yields of f1 crossbred goats (boer with females of non-defined racial standard) finished on native pasture.
Procura de água e de sombra por caprinos F1 Boer x SRD terminados em pastejo e submetidos a suplementa o Look for water and shade by Boer goats crossbreeds finished in pasture under different feeding supplementation  [cached]
Anderson Luiz Nascimento da Silva,José Morais Pereira Filho,Bonifácio Benicio de Souza,Nadjanara Souza de Oliveira
Revista Brasileira de Saúde e Produ??o Animal , 2011,
Abstract: O experimento foi conduzido na Universidade Federal de Campina Grande (UFCG), Patos, Paraíba, Brasil com o objetivo de avaliar a procura de água e sombra por caprinos F1 Boer x SRD terminados em pastagem nativa e submetidos à suplementa o. Utilizou-se 28 caprinos n o castrados, com 120 dias de idade e peso vivo inicial de 15,52kg, distribuídos em quatro níveis de suplementa o (0,0; 0,5; 1,0 e 1,5% do peso vivo em MS), com sete repeti es. Os avaliadores passaram por treinamento para aprimorar a metodologia e para adapta o dos animais às suas presen as. Os dados foram obtidos através da observa o da frequência de procura de água e sombra pelos animais durante o pastejo diário em três épocas: junho, julho e agosto. N o houve diferen a entre tratamentos para procura por água e a frequência observada foi de 71,43; 80,95; 88,89 e 77,78% para os tratamentos 0,0; 0,5; 1,0 e 1,5% de suplementa o, respectivamente. N o houve efeito dos tratamentos na procura por sombra e a frequência observada foi de 71,43; 85,71; 94,44 e 94,44% nos tratamentos 0,0; 0,5; 1,0 e 1,5% de suplementa o respectivamente. A suplementa o n o altera a frequência de procura de água por caprinos F1 Boer x SRD terminados em pastagem nativa. Os níveis de suplementa o e as épocas n o influenciaram a procura de sombra. The experiment was carried out at the Federal University of Campina Grande (UFCG), Patos, Paraiba, Brazil. The objective of this study was to evaluate the search for water and shade by Boer goats crossbreeds finished in native pasture under different supplementation levels. Twenty-eight Boer goats crossbreeds, non castrated, with 120 days old and an initial live body weight of 15.52Kg, were used. The treatments were randomly assigned to the animals according to a completely randomized design, with 4 feeding supplementations levels (0.0; 0.5; 1.0 and 1.5% of live body weight on Dry matter) and seven replications (goats). Data were obtained through the observation of the search frequency for water and shade by the animals during the daily grazing in three times: June, July and August. There wasn’t difference among treatments for search for water and the frequency observed was of 71.43, 80.95, 88.89 and 77.78% for the treatments 0.0; 0.5; 1.0 and 1.5% of feeding supplementation, respectively. There wasn’t effect of the treatments in the search for shade and the frequency observed was of 71.43, 85.71, 94.44 and 94.44% in the treatments 0.0; 0.5; 1.0 and 1.5% of feeding supplementation, respectively. The feeding supplementation level doesn't alter the search frequency of water
The effect of supplementation on the tissue composition of the commercial cuts of cross-bred F1 (Boer × SPRD) finished in native pasture
Silva, Rayana de Medeiros;Pereira Filho, José Morais;Silva, Anderson Luiz Nascimento da;Cezar, Marcílio Fontes;Silva, Aderbal Marcos de Azevêdo;Oliveira, Nadjanara Souza;
Revista Brasileira de Zootecnia , 2010, DOI: 10.1590/S1516-35982010000600026
Abstract: the present study aimed to assess the effect of levels of supplementation with concentrate on the tissue composition of commercial cuts of goats finished in native pasture. it was used 24 non-castrated cross-bred f1 (boer × sprd) goats at the age of 120 days, with initial average body weight (bw) of 15.52 kg distributed in four levels of supplementation with concentrated feed (0.0; 0.5; 1.0 and 1.5% of body weight in dry matter) and slaughtered at 25.12 kg; 26.62 kg; 28.56 kg and 29.19 kg, respectively, corresponding to 218 days of life. the carcass was sectioned in the half, and from the left half of the carcass, the following cuts were separated: leg, loin, ribs, shoulder and neck, which were dissected into muscle, bone and fat, with the results expressed in weight and yield of the tissues in relation to the weight of the cut. supplementation incresead the muscle weight, as well as the fat weight and yield and decreased the muscle:fat relationship; however there was no influence on the proportion of muscle in the five studied cuts. therefore, in order to obtain better finished commercial meat cuts, supplementation of 1.0 and 1.5% of body weight is recommended. nevertheless, supplementation is unnecessary for obtaining lighter meat cuts with a good proportion of muscle.
Longissimus dorsi fatty acids composition of Bos indicus and Bos indicus x Bos taurus crossbred steers finished in pasture
Prado, Ivanor Nunes do;Moreira, Fernanda Barros;Matsushita, Makoto;Souza, Nilson Evelázio de;
Brazilian Archives of Biology and Technology , 2003, DOI: 10.1590/S1516-89132003000400015
Abstract: studies were carried out to evaluate the fatty acids composition of longissimus dorsi muscle, with or without fat thickness, of bos indicus and bos indicus x bos taurus crossbred steers finished in millet (pennisetum americanum l.) or star grass (cynodon plectostachyus pilger) pasture systems with mineral or mineral protein supplementation. neither the treatment nor the genetic group had effect on meat fatty acids composition. the cut had effect on meat fatty acid composition. the meat without fat thickness had 11% of pufa, 43% of mufa and 45% of sfa. the meat with fat thickness had 5% of pufa, 44% of mufa and 50% of sfa. pufa/sfa ratio was 0.10 and 0.25 and n-6/n-3 ratio was 0.80 and 1.27 for cuts with and without fat thickness.
Longissimus dorsi fatty acids composition of Bos indicus and Bos indicus x Bos taurus crossbred steers finished in pasture  [cached]
Prado Ivanor Nunes do,Moreira Fernanda Barros,Matsushita Makoto,Souza Nilson Evelázio de
Brazilian Archives of Biology and Technology , 2003,
Abstract: Studies were carried out to evaluate the fatty acids composition of Longissimus dorsi muscle, with or without fat thickness, of Bos indicus and Bos indicus x Bos taurus crossbred steers finished in millet (Pennisetum americanum L.) or star grass (Cynodon plectostachyus Pilger) pasture systems with mineral or mineral protein supplementation. Neither the treatment nor the genetic group had effect on meat fatty acids composition. The cut had effect on meat fatty acid composition. The meat without fat thickness had 11% of PUFA, 43% of MUFA and 45% of SFA. The meat with fat thickness had 5% of PUFA, 44% of MUFA and 50% of SFA. PUFA/SFA ratio was 0.10 and 0.25 and n-6/n-3 ratio was 0.80 and 1.27 for cuts with and without fat thickness.
Evaluation of carcass characteristics and meat chemical composition of Bos indicus and Bos indicus x Bos taurus crossbred steers finished in pasture systems
Moreira, Fernanda Barros;Souza, Nilson Evelázio de;Matsushita, Makoto;Prado, Ivanor Nunes do;Nascimento, Willian Gon?alves do;
Brazilian Archives of Biology and Technology , 2003, DOI: 10.1590/S1516-89132003000400016
Abstract: the objective of this study was to evaluate the carcass characteristics (carcass weight, carcass yield, fat thickness, loin area, marbling and colour) and chemical composition of the longissimus dorsi muscle (moisture, ash, crude protein, fat and cholesterol) of cuts with or without fat thickness, of bos indicus and bos indicus x bos taurus crossbred steers finished in millet (pennisetum americanum l.) or star grass (cynodon plectostachyus pilger) pasture systems, with mineral or mineral protein supplementation. animals were slaughtered with an average body weight of 450 kg (bos indicus) or 470 kg (bos indicus x bos taurus crossbreed). there was no treatments effect on carcass characteristics and meat chemical composition of cut without fat thickness. the cuts with fat thickness of steers fed millet presented the highest fat deposition. bos indicus steers presented higher carcass yield (57.23%) and fat thickness (4.88 mm) compared with crossbreed (53.40% and 3.05 mm). there was no breed effect on chemical composition of meat. the mean levels of cholesterol concentration were 31.41 mg/100 and 37.55 mg/100g of meat with and without fat thickness.
Evaluation of carcass characteristics and meat chemical composition of Bos indicus and Bos indicus x Bos taurus crossbred steers finished in pasture systems  [cached]
Moreira Fernanda Barros,Souza Nilson Evelázio de,Matsushita Makoto,Prado Ivanor Nunes do
Brazilian Archives of Biology and Technology , 2003,
Abstract: The objective of this study was to evaluate the carcass characteristics (carcass weight, carcass yield, fat thickness, loin area, marbling and colour) and chemical composition of the Longissimus dorsi muscle (moisture, ash, crude protein, fat and cholesterol) of cuts with or without fat thickness, of Bos indicus and Bos indicus x Bos taurus crossbred steers finished in millet (Pennisetum americanum L.) or star grass (Cynodon plectostachyus Pilger) pasture systems, with mineral or mineral protein supplementation. Animals were slaughtered with an average body weight of 450 kg (Bos indicus) or 470 kg (Bos indicus x Bos taurus crossbreed). There was no treatments effect on carcass characteristics and meat chemical composition of cut without fat thickness. The cuts with fat thickness of steers fed millet presented the highest fat deposition. Bos indicus steers presented higher carcass yield (57.23%) and fat thickness (4.88 mm) compared with crossbreed (53.40% and 3.05 mm). There was no breed effect on chemical composition of meat. The mean levels of cholesterol concentration were 31.41 mg/100 and 37.55 mg/100g of meat with and without fat thickness.
Efeito da suplementa??o nas características de carca?a e dos componentes n?o-carca?a de caprinos F1 Boer × SRD terminados em pastagem nativa
Carvalho Júnior, Aloísio Monteiro de;Pereira Filho, José Morais;Silva, Rayana de Medeiros;Cezar, Marcílio Fontes;Silva, Aderbal Marcos de Azevêdo;Silva, Anderson Luiz Nascimento da;
Revista Brasileira de Zootecnia , 2009, DOI: 10.1590/S1516-35982009000700020
Abstract: the objective of this study was to evaluate the effect of supplementation on the carcass characteristics of crossbred boer goats finished on native pasture. twenty-four boer crossbreed goats were used, 120 days old and with an initial 15.52 kg bw. the supplemental feeding was randomly assigned to the animals according to a completely randomized design with 4 supplementation levels (0.0, 0.5, 1.0 and 1.5%) and six replications (goats). the animals had access to the pasture from 7:30 a.m. until 4 p.m. throughout the experimental period and were taken to stalls to receive supplemental feeding in individual cages equipped with hods and a water. full and empty digestive tract (dt) were weighed, as well as the bladder and gall bladder to obtain the empty body weight (ebw). the visceras yield tended to be different from that observed for absolute weight, except for hoof yield that presented a decreasing linear behavior. the hot and cold carcass weights and the yields and the empty body weight and the biological yield presented positively response to the supplementation levels. regarding the participation of wholesale cuts in the carcass, only the neck yield presented linear effect in response to the increase in supplementation levels. full digestive tract and digestive content weights did not respond to the supplementation levels. the digestive content weight was decisive for the effect of supplemental feeding in the full digestive tract weight. wholesale cuts weight responded positively to the supplementation levels.
Bionutritional efficiency of crossbred beef cattle finished on feedlot andslaughtered at different body weights
Mello, Renius;Queiroz, Augusto César de;Faria, Marcelo Henrique de;Henrique, Douglas Sampaio;Maldonado, Fabiana;
Revista Brasileira de Zootecnia , 2010, DOI: 10.1590/S1516-35982010000300018
Abstract: the objective of this study was to assess the bionutritional efficiency of crossbred f1 red angus × nellore (? ra ? n) and f1 blonde d'aquitaine × nellore (? ba ? n) young bulls finished on feedlot and slaughtered at 480, 520 and 560 kg body weight. a completely randomized experimental design in a 2 × 3 (genetic group × slaughter weight) factorial arrangement with six replicates was used. the ? ba ? n young bulls showed higher kidney, pelvic and inguinal fat (kpif, kg and % bw) and lower multivariate biological nutritional index (mbni) and residual feed intake than ? ra ? n young bulls. the young bulls slaughtered at heavier weight had larger ribeye area (cm2), fat thickness over the 12-13th rib, fat thickness over the rump, kpif (kg and % bw), dry matter intake (dmi, kg/d), net energy intake (mj/d) and metabolizable protein intake (g/d), and mbni compared to young bulls slaughtered at lighter weight. furthermore, the ? ba ? n young bulls slaughtered at 480 kg had lower feed conversion than the others. on the other hand, the average daily weight gain (kg/d), dmi (% bw and g/bw0.75), feed efficiency and kleiber ratio did not differ between genetic group, slaughter weight and genetic group versus slaughter weight interaction. therefore, crossbred f1 blonde d'aquitaine × nellore young bulls and animals slaughtered at lighter weights are more bionutritionally efficient in the finishing phase on feedlot.
Corn silage with and without enzyme-bacteria inoculants on performance, carcass characteristics and meat quality in feedlot finished crossbred bulls
Fugita, Carlos Alberto;Prado, Ivanor Nunes do;Jobim, Clóves Cabreira;Zawadzki, Fernando;Valero, Maribel Velandia;Pires, Maria Carla de Oliveira;Prado, Rodolpho Martin do;Fran?ozo, M?nica Chaves;
Revista Brasileira de Zootecnia , 2012, DOI: 10.1590/S1516-35982012000100023
Abstract: two height cuttings of corn silage with or without enzyme inoculants were evaluated for 68 days on performance, carcass characteristics, meat quality and chemical composition of the longissimus muscle in crossbred bulls (f1 - ? nellore vs. ? angus) finished in feedlot. thirty-two 20-month-old bulls, with initial average weight of 374±25 kg, were kept in individual pens (10 m2). diets consisted of 50% roughage and 50% concentrate, with an expected 1.80 kg/day weight gain. the experimental design with four diets and eight replications was completely randomized. different cutting heights, low (25 cm) and high (45 cm), with or without enzyme inoculants, were studied. live weight, average daily gain, feed intake, feed efficiency, carcass characteristics, muscle, fat and bone percentages at the 11th and 12th ribs, chemical composition of the longissimus muscle, sum of saturated, mono-unsaturated, poly-unsaturated fatty acids, n-3 fatty acids, n-6 fatty acids, and the poly-unsaturated:saturated and n-6:n-3 relations were determined. cutting height of silage corn and the use of inoculants did not affect final live weight, average daily gain, feed intake, alimentary efficiency of dry matter, carcass characteristics, meat quality, chemical composition of the longissimus muscle or fatty acid profile. high cutting of silage corn (45 cm above the ground) and the use of inoculants are not necessary in the case of cattle finished in feedlot, with 1.8 kg daily gain.
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