SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

Agonistic behaviour and feed efficiency in juvenile Nile tilapia Oreochromis niloticus

Liao, I; Liu, F.

In order to develop effective formulated for Penaeus monodon , sufficient information is needed on its nutritional requirements. Unfortunately, research on this area has been very limited. This paper outlines the results of such research. Since data on the nutritional requirements of P. japonicus are relatively well established, some of these data are also reviewed in this paper and are used as a basis for assessing the nutritional requirements of P. monodon . Protein, lipid, carbohydrate, mineral and vitamin requirements are evaluated from the parameters of growth survival and feed efficiency. Studies on the effects of enzymes and the development of microparticulate diet for larvae are also summarized.

Tipo: Text

Palavras-chave: Penaeus monodon; Pond culture; Shrimp culture; Amino acids; Fatty acids; Marine crustaceans; Diets; Enzymes; Feed efficiency; Survival; Growth; Vitamins; Carbohydrates; Lipids; Proteins.

Ano: 1989

URL: http://archimer.ifremer.fr/doc/1989/acte-1471.pdf

De Verdal, Hugues; O'Connell, Catherine Maeve; Mekkawy, Wagdy; Vandeputte, Marc; Chatain, Beatrice; Bégout, Marie-laure; Benzie, John A.h..

Given the strong effects of behavioural hierarchies on growth in many cultured species and the key role of feed efficiency in aquaculture economics, understanding the nature of the interaction of these variables is important for the sustainability of aquaculture. The relationship between agonistic behaviour, growth and feed efficiency in Nile tilapia, Oreochromis niloticus, was studied by rearing 120 fish in eight aquaria. Fish were video-recorded to estimate the occurrence of agonistic behaviour during a fasting and a refeeding period. Growth, feed intake and feed conversion efficiency (FCE - calculated as the inverse of feed conversion ratio (FCR)) were subsequently measured individually for each fish. Fish showed 58% less agonistic traits during the...

Tipo: Text

Palavras-chave: Agonstic behaviour; Feed efficiency; Nile tilapia; Performances; Correlation.

Ano: 2019

URL: https://archimer.ifremer.fr/doc/00483/59495/62363.pdf

Animal performance and carcass characteristics of Nellore young bulls fed coated or uncoated urea slaughtered at different weights

Pazdiora,Raul Dirceu; Resende,Flávio Dutra de; Faria,Marcelo Henrique de; Siqueira,Gustavo Rezende; Almeida,Geraldo Benedito de Souza; Sampaio,Ricardo Linhares; Pacheco,Paulo Santana; Prietto,Murilo Sergio Rodrigues.

The objective of this study was to evaluate animal performance and carcass characteristics of 64 Nellore young bulls at 22 months of age finished in a feedlot and slaughtered at five body weights (350; 455; 485; 555 and 580 kg) fed diets containing coated or uncoated urea. The experimental design adopted was completely randomized, set in a 4 × 2 factorial arrangement, and for the variables assessed in the control animals, it was 5 × 2. No effect of interaction between slaughter weights and diets were observed, so the variables were analyzed separately, compared by polynomial contrasts and by the F test, respectively. The time animals remained in the feedlot to reach slaughter weights was 66, 88, 145 and 194 days. Average daily gain (ADG) showed quadratic...

ANTIMICROBIAL DRUG USE AND VETERINARY COSTS IN U.S. LIVESTOCK PRODUCTION

Palavras-chave: Body composition; Fat thickness; Feed efficiency; Feedlot; Gain yield; High grain rations.

Ano: 2013

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000400007

AgEcon

Mathews, Kenneth H., Jr..

Antimicrobial drugs are fed to animals at low levels to treat diseases, to promote growth, and to increase feed efficiency. Incorporating low levels of antimicrobial drugs in livestock feeds has been shown to be a factor stimulating the development of antimicrobial drug resistant bacteria in livestock. Since many of the drugs used to treat livestock are the same as or are related to drugs used in human health care, there is concern that resistant organisms may pass from animals to humans through the handling of animals or food derived from animals. The movement of pathogens from animals to humans, and vice versa, has been documented, but the extent to which it has occurred or could occur is unknown. Although it is estimated that as little as 10 percent of...

Tipo: Report

Palavras-chave: Antimicrobial drugs; Pathogens; Growth promotion; Feed efficiency; Therapeutic drug use; Subtherapeutic drug use; Subclinical; Livestock Production/Industries.

Ano: 2001

URL: http://purl.umn.edu/33695

Automatic feeders for Nile tilapia raised in cages: productive performance at high feeding frequencies and different rates

Arq. Bras. Med. Vet. Zootec.

Oliveira,F.A.; Argentim,D.; Novelli,P.K.; Agostinho,S.M.M.; Agostinho,L.M.; Agostinho,C.A..

ABSTRACT The main goal of modern intensive fish farms should be to increase productivity at a low cost. The automation of fish feeding plays an important role in this scenario since it may improve feed efficiency and reduce organic waste emissions. The aim of this experiment was to provide basic information for the development of feeding techniques using automatic feeders. The experiment was done from September to December, with tilapia weighing 185g, fed 48 meals a day at 22 or 30 minute intervals, with feeding rates of 2, 3 and 4% of live weight. Eighteen 1m3 net cages equipped with automatic feeders were distributed in one pond. During the experimental trial the mean values for dissolved oxygen, pH and temperature were 3.20mg/l, 8.03 and 25.43°C,...

Avaliação do consumo alimentar residual em touros jovens da raça Nelore Mocho em prova de desempenho animal - DOI: 10.4025/actascianimsci.v30i4.6464

Palavras-chave: Automatic feeding; Feeding management; Oreochromis niloticus; Feed efficiency; Carcass indexes.

Ano: 2016

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352016000300702

Animal Sciences

Bonin, Marcio de Nadai; UEL; Demarchi, João José Assumpção de Abreu; Agência Paulista de Tecnologia dos Agronegócios; Mizubuti, Ivone Yurika; UEL; Ribeiro, Edson Luis de Azambuja; UEL; Manella, Marcelo de Queiroz; Instituto de Zootecnia; Pereira, Elzânia Sales; UFC.

Este trabalho avaliou as características: idade, peso, ganho de peso diário (GPD), ingestão de matéria seca (IMS), conversão alimentar (CA), eficiência alimentar (EA) e consumo alimentar residual (CAR) de tourinhos da raça Nelore Mocho em prova de desempenho animal (PDA). Foram utilizados 30 animais, inteiros, com idade inicial de 243,6±30,4 dias. Alimentos e sobras individuais foram quantificados diariamente. A classificação baseou-se no índice de prova de desempenho animal (IPDA). Para CAR não houve diferença (p > 0,05) entre a média dos grupos. As variáveis peso e GPD não foram correlacionadas com CAR. Houve alta correlação entre CAR e CA. EA e CA apresentaram correlação com CAR. O IPDA apresentou alta correlação com a IMS (r = 0,75). Comparado o CAR...

Palavras-chave: 5.04.03.00-1 Nutrição e Alimentação Animal bovinos de corte; Eficiência alimentar; Melhoramento; Seleção. beef cattle; Feed efficiency; Improve; Selection..

Ano: 2009

URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/6464

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.

The objective of this study was to assess the bionutritional efficiency of crossbred F1 Red Angus × Nellore (½ RA ½ N) and F1 Blonde D'Aquitaine × Nellore (½ BA ½ 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 ½ BA ½ 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 ½ RA ½ 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...

Can individual feed conversion ratio at commercial size be predicted from juvenile performance in individually reared Nile tilapia Oreochromis niloticus?

Palavras-chave: Animal performance; Feed efficiency; Feed conversion; Kleiber ratio; Multivariate biological nutritional index; Residual feed intake.

Ano: 2010

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000300018

Carcass quality of buffalo (Bubalus bubalis) finished in silvopastoral system in the Eastern Amazon, Brazil

Rodde, Charles; Chatain, Beatrice; Vandeputte, Marc; Quoc Trinh, Trong; Benzie, John A.h.; De Verdal, Hugues.

Feed conversion ratio (FCR), the ratio between feed intake and body weight gain, is of major interest for improving aquaculture sustainability through reduced feed costs and environmental impacts. Demonstrating whether FCR measured in juvenile fish is an accurate predictor of their performance during the whole rearing period is critical to developing genetic improvement programs for this trait. This is especially true for estimates obtained in individually reared fish, for which this has high implications regarding the size of the necessary rearing structures. We obtained individual FCR from 30 male Nile tilapia Oreochromis niloticus from the GIFT strain individually reared in a recirculating system, from 36 to 260 g mean weight. They were fed twice a day...

Tipo: Text

Palavras-chave: Feed efficiency; GIFT tilapia; Individual rearing; Selective breeding.

Ano: 2020

URL: https://archimer.ifremer.fr/doc/00630/74175/73757.pdf

Arq. Bras. Med. Vet. Zootec.

Peixoto,M.R.S.; Lourenço Junior,J.B.; Faturi,C.; Garcia,A.R.; Nahúm,B.S.; Lourenço,L.F.H.; Meller,L.H.; Oliveira,K.C.C..

The influence of the diet on the quality of buffalo (Bubalus bubalis) carcasses of crossbred Murrah and Mediterranean, concentrate fed on traditional (corn/soybean) or on agro-industrial residues (palm oil and coconut cakes) was studied. The animals were sacrificed in a slaughterhouse, and physical and physical-chemical analyses in the carcasses were carried out after 24 hours, and instrumental color and texture analyses of the Longissimus dorsi were carried out 48 hours after cooling. The animals supplemented with palm oil cake had better carcass conformation and fat trim, and differences (P<0.05) in the percentage of fat in the carcass fat thickness and coverage were observed.

Comparison between linear and nonlinear systems of feed formulation for broilers

Palavras-chave: Buffalo; Feed efficiency; Agroforestry systems; Oil palm cake; Coconut cake.

Ano: 2012

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352012000400034

Rev. Bras. Ciênc. Avic.

Dadalt,JC; Butzen,FM; Ribeiro,AML; Renz,SV; Kessler,A de M; Penz Júnior,AM.

Two experiments were simultaneously carried out to compare feed formulation models: a linear model for minimum cost with a nonlinear model for maximum profitability for one-to 42-d-old broilers. One-d-old male or female Cobb 500 broilers (n=2368) were allocated to one of the two trials according to sex. The experiments were performed simultaneously in an experimental poultry farm. Two housing densities were used: high density (HDH), with 14 birds/m2, and low density (LDH), with 10 birds/m2. The following treatments were evaluated: linear feed formulation and LDH (LF10); nonlinear formulation and LDH (NF10); linear formulation and HDH (LF14); and nonlinear formulation and HDH (NF14). A completely randomized design with four treatments of eight replicates...

Corn silage with and without enzyme-bacteria inoculants on performance, carcass characteristics and meat quality in feedlot finished crossbred bulls

Palavras-chave: Feed efficiency; Nutritional strategies; Profitability.

Ano: 2015

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000100109

Fugita,Carlos Alberto; Prado,Ivanor Nunes do; Jobim,Clóves Cabreira; Zawadzki,Fernando; Valero,Maribel Velandia; Pires,Maria Carla de Oliveira; Prado,Rodolpho Martin do; Françozo,Mônica Chaves.

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 - ½ Nellore vs. ½ 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,...

Decoquinate, lasalocid and monensin for starter feeds and the performance of holstein calves to 20 weeks of age

Palavras-chave: Feed efficiency; Feed intake; Finishing system; Forage conservation; Human health; Meat quality.

Ano: 2012

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000100023

Scientia Agricola

Nussio,Carla Maris Bittar; Huber,John Tal; Nussio,Luiz Gustavo.

The large utilization of coccidiostats in dairy herds has raised the question regards the best product to use, based on better animal performance. Sixty-four Holstein calves were randomly assigned to four treatments at 10 (±4) d of age to evaluate calf performance when fed approved coccidiostats available on the market in Arizona, USA. Calves received a dry calf starter without (control) or with one of the following coccidiostats: lasalocid, 30 mg kg-1; decoquinate, 19 mg kg-1; and monensin, 30 mg kg-1. Calves received 3.6 kg d-1 of a commercial 22% CP:20% fat milk replacer until 6 wk of age. Calves were offered starter "ad libitum" up to 2 kg d-1, and calves had free access to water throughout the trial. Alfalfa hay was offered "ad libitum" after weaning....

ECONOMIC EFFECTS OF A BAN AGAINST ANTIMICROBIAL DRUGS USED IN U.S. BEEF PRODUCTION

Palavras-chave: Coccidiostats; Feed efficiency; Growth; Ionophore; Weight gain.

Ano: 2002

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162002000300002

AgEcon

Mathews, Kenneth H., Jr..

Economic effects for three scenarios of antimicrobial drug use in livestock production -- a no-ban scenario and two levels of bans -- are examined through cost minimization and a partial equilibrium analysis. Results indicate that regulating antimicrobial drug use in livestock production would increase per-unit costs of producers previously using drugs and reduce beef supplies in the short run, reducing consumer surplus. Producers not previously using drugs would benefit from short-run price increases.

Tipo: Journal Article

Palavras-chave: Antimicrobial drug; Ban; Beef production; Cost minimization; Feed efficiency; Growth function; Growth promotant; Livestock Production/Industries; C61; D21; D41; I118; Q11; Q12; Q18; R38.

Ano: 2002

URL: http://purl.umn.edu/15068

ECONOMIC IMPACTS OF BANNING SUBTHERAPEUTIC USE OF ANTIBIOTICS IN SWINE PRODUCTION

AgEcon

Brorsen, B. Wade; Lehenbauer, Terry; Ji, Dasheng; Connor, Joseph.

Public health officials and physicians are concerned about possible development of bacterial resistance and potential effects on human health that may be related to the use of antimicrobial agents in livestock feed. The focus of this research is aimed at determining the economic effects that subtherapeutic bans of antimicrobials would have on both swine producers and consumers. The results show that a ban on growth promotants for swine would be costly, totaling $242.5 million annually, with swine producers sharing the larger portion in the short run and consumers sharing the larger portion in the long run.

Tipo: Working or Discussion Paper

Palavras-chave: Banning subtherapeutic use; Feed efficiency; Mortality rate; Sort loss; Livestock Production/Industries; Q18; D61.

Ano: 2002

URL: http://purl.umn.edu/15078

Effect of early feed restriction on body weight and compensatory growth in Label Rouge broiler chickens

Acta Agron. (Palmira)

Morais,Bianca Corrêa de; Netto,Daniel Araújo; Alves,Julia Rodrigues; Lima,Heder José D'Avila.

Abstract This research was conducted to assess the compensatory gain in birds that have suffered severe food restriction and a reduced growth in its initial phase. A total of 144 birds were used in the Label Rouge lineage with average initial weight 239.90 ± 76.80 g, from 28 to 49 days. The experimental design used was a completely randomized design, where the birds were distributed in 18 boxes, containing 3 treatments and 6 replicates of 8 birds per cage. The treatments were as follows: birds with body weight of 150.73 ± 12.62 g, between weighing from 239.79 ± 13.14 g and heavy weight of 329.17 ± 24.89 g in different periods, from 28 to 35, 35 to 42 and 42 to 49 days of age, respectively. In relation to weight gain, the heavy birds, obtained better...

URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122017000400606

Palavras-chave: Consumption; Feed efficiency; Poultry; Severe restriction.

Ano: 2017

Effect of nutritional density and season on the performance of young rabbit does before the first mating - doi: 10.4025/actascianimsci.v35i4.19101

Animal Sciences

Teixeira, Paulo Sergio dos Santos; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Wechsler, Francisco Stefano; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Moura, Ana Silvia Alves Meira Tavares; Universidade Estadual Paulista “Júlio de Mesquita Filho”.

The objective was to evaluate the effect of nutritional density and season on the performance of young rabbit does before the first mating. Forty-eight females from the Botucatu Genetic Group were used in each season (warm or cool), starting at the age of 70 days, housed in groups of four per cage up to 119 days, and reared individually from 120 to 140 days of age. The high-density diet was formulated to contain, on a 90% DM basis, 18.4% CP, 16.5% ADF and 2,500 kcal DE kg-1; whereas the low-density diet was formulated to contain 14.7% CP, 24% ADF and 2,000 kcal DE kg-1. The experiment was conducted according to a 2x2 factorial design (two diets x two seasons) with repeated measures (weeks). The high-density diet promoted lower feed intake, higher final...

Effect of past nutritional history and fasting on feed intake and growth in rainbow trout Oncorhynchus mykiss

Palavras-chave: 5.04.03.00-1 acid detergent fiber; Feed efficiency; Feed intake; Growth; Live weight; Nutrition acid detergent fiber; Feed efficiency; Feed intake; Growth; Live weight; Nutrition.

Ano: 2013

URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/19101

Effect of selection for fasting tolerance on feed intake, growth and feed efficiency in the European sea bass Dicentrarchus labrax

Boujard, Thierry; Burel, Christine; Medale, Francoise; Haylor, Graham; Moisan, Annick.

Groups of juvenile rainbow trout were fed to satiation for 10 days after 1, 11 and 21 days of feed deprivation. These fish (initial body weight =20 +/- 2 g) were previously fed at different feeding levels (0.5 or 1.5% initial body weight, to satiation) with a high (20.4 kJ . g(-1)) or a low (16.2 kJ.g(-1)) digestible energy diet content for 34 days. It is shown that past nutritional history affected growth performance: duration of feed deprivation has a major effect on intake and feed conversion efficiency; previous feeding level has an effect on intake; dietary energy content affected feed conversion efficiency. In addition, an attempt was made to identify some of the metabolic parameters that could be involved in the increase in growth performance during...

Tipo: Text

Palavras-chave: Feed efficiency; Appetite; Past nutritional history; Compensatory growth; Aquaculture.

Ano: 2000

URL: http://archimer.ifremer.fr/doc/2000/publication-1399.pdf

Effects of Lactobacillus buchneri on the nutritive value of sugarcane silage for finishing beef bulls

Daule, Sophie; Vandeputte, Marc; Vergnet, Alain; Guinand, Bruno; Grima, Laure; Chatain, Beatrice.

Feed efficiency is a major goal for aquaculture sustainability, and selecting fish to genetically enhance this trait would be highly valuable. However, no selective breeding program specifically targeted to feed efficiency exists for farmed fish, mostly because of the difficulty of measuring individual feed intake. However, a negative phenotypic correlation between feed efficiency and weight loss at fasting has been previously demonstrated in sea bass submitted to feed deprivation (FD). We mated sea bass parents selected for their high (FD+) or low (FD-) weight loss at fasting to produce FD+ and FD- progeny, which were reared in a single tank to avoid common environmental effects. At 8 months of age, 1200 of those fish were submitted to three alternating...

Tipo: Text

Palavras-chave: European sea bass; Dicentrarchus labrax; Selective breeding; Feed efficiency; Fasting tolerance.

Ano: 2014

URL: http://archimer.ifremer.fr/doc/00189/29985/28483.pdf

Schmidt,Patrick; Nussio,Luiz Gustavo; Queiroz,Oscar Cézar Müller; Santos,Mateus Castilho; Zopollatto,Maity; Toledo Filho,Sérgio Gil de; Daniel,João Luiz Pratti.

Lactobacillus buchneri 40788 and the fibrolytic enzymes β-glucanase and xylanase were applied to chopped sugarcane to study their effects on the nutritive value of silage. Sugarcane was mechanically harvested after 14 mo of growth and treated without (control) or with L. buchneri at a theoretical application rate of 5 × 10(4) cfu/g, 1 × 10(5) cfu/g, or 1 × 10(5) cfu/g plus enzymes. Forage was packed into farm-scale bag silos (40 t/silo) and stored for 92 d. Fifty-six bulls (32 Nellore and 24 Charolais × Nellore) were housed in 20 collective pens and fed diets comprising (dry matter [DM] basis) 458 g/kg sugarcane silage and 542 g/kg concentrates for an 84-d period. Treated silages had higher concentrations of acetic acid and lower concentrations of ethanol....