The present study was carried out with the objective of evaluating effects feeding dairy cows organic or inorganic sources zinc (Zn), copper (Cu) and selenium (Se) on blood concentrations these minerals, metabolic profiles, nutrient intake milk yield composition. Nineteen Holstein were selected randomly assigned to two groups for receiving (n = 9) 10) Zn, Cu Se from 60 days before expected date calving 80 lactation. Samples feed, orts collected analysis. Body condition score (BCS) determined...

This study aimed to evaluate the effect of inclusion protected or unprotected fats in diet feedlot lambs on feeding behavior, productive characteristics, carcass traits, and meat quality. Forty male Dorper × Santa Inês (22.27 ± 2.79 kg) were randomly assigned treatments a completely randomized design. The experimental consisted five diets: no added fat (NAF), whole soybeans (WSB), calcium salts fatty acids (CSFA), soybean oil (SO), corn germ (CG). total intake dry matter (DMI) (p < 0.001)...

The objective of this study was to evaluate the effects chitosan (CH), with or without inclusion unsaturated fatty acid (UFA) sources, on intake and digestibility, ruminal fermentation, microbial protein synthesis, nitrogen balance, blood metabolites, milk production composition, dynamics flow in lactating Jersey cows. Five rumen-fistulated cows [average days = 105 ± 45 days; 18.0 0.47 kg/day; body weight 350 25 kg] were used a 5 × Latin square design 21-day periods. experimental diets...

The objective of this study was to evaluate the effects two energy sources, associated or not (crude glycerin and castor oil) in buffaloes' diets on intake, digestibility, rumen kinetics, feeding behavior, nitrogen balance, microbial protein synthesis, fermentation, blood metabolites. Four ruminally-cannulated Murrah buffaloes [526 ± 29 kg initial BW] were randomly assigned according a 4 x Latin square design which animals allocated each treatment: CONT = control with soybean meal ground...

Background and Aim: The administration of hot chili pepper in cattle nutrition has been suggested to influence immune responses, antioxidant activities, physiological parameters. This study aimed evaluate the effects microencapsulated (MCP) supplementation on blood metabolites, capacity, parameters crossbred dairy cows, contributing novel insights into metabolic adaptations under tropical production systems. Materials Methods: Twenty-four lactating cows (Bos taurus × Bos indicus); average...

The objective of this experiment was to quantify the effects feeding polymer-coated slow-release urea on nutrient intake and total tract digestion, milk yield composition, balances, ruminal fermentation, microbial protein synthesis, blood parameters in dairy cows. Sixteen Holstein cows (580±20 kg live weight (mean ± standard deviation); 90 180 days (DIM); 28 kg/d average yield) were used a replicated 4 × Latin square experimental design. animals assigned each according DIM. randomly...

The objective of this study was to evaluate the use fat sources in rations for lactating cows on productive performance and composition milk protein fraction. Twelve Holstein were used, grouped three balanced 4 × Latin squares, fed with following rations: control; refined soybean oil; whole raw soybean; calcium salts unsaturated fatty acid (Megalac-E). Dry matter nutrient intake, daily production evaluated. samples used analyze collected two alternate days obtained from milking. Milk total...

The objective of this study was to evaluate the effect lipid and selenium sources in diets for finishing Nellore steers on fatty acid composition concentration longissimus muscle. Fifty (body weight = 458±39 kg) were assigned one six dietary treatments: 1) diet containing sunflower seed inorganic selenium; 2) organic 3) whole cottonseed 4) 5) soybeans 6) selenium. Diets formulated with same amount nitrogen calories supplied once daily collective pens, three animals per pen, 120 d. At end...

Summary Whole oilseeds such as soya beans have been utilized in dairy rations to supply additional fat and protein. However, antinutritional components contained beans, trypsin inhibitors haemagglutinins (lectins) may alter digestibility of nutrients consequently affect animal performance. The objective the present experiment was quantify effect different levels whole raw diets cows on nutrient intake, total tract digestion, balances milk yield composition. Sixteen mid late‐lactation (228 ±...

The objective of this study was to evaluate the influence unsaturated fatty acids in diets for dairy cows during transition period and early lactation on intake, digestion nutrient balance. Thirty-six multiparous pregnant Holstein were randomly distributed receive one experimental from 35 days before expected date parturition 84 post-partum. Diets fed as a total mixed ration follows: control (C); soybean oil (SO), based inclusion 30 g/kg (DM basis); calcium salts (CS), basis). Pre-partum dry...

The objective of this work was to evaluate the levels sodium monensin on lactating cows and their effects productive performance milk protein fraction composition. It used 12 Holstein cows, distributed in four balanced 3 × Latin squares, fed three diets: one control without monensin, two diets with at 24 or 48 mg/kg DM added concentrate. Milk production daily measured throughout entire experimental period. samples for analysis composition were collected alternated days from milking....

The objective of this study was to evaluate the utilization different sources unsaturated long-chain fatty acids in diets for dairy cows during transition period and early lactation on milk acid profile composition protein fraction. Thirty-six Holstein were divided into three groups, fed following diets: control (C); soybean oil (SO); calcium salts (CS). samples utilized analysis obtained weekly from parturition twelve weeks lactation; each one originated two daily milkings. Milk total...

Objective The purpose of this study was to evaluate the influence body condition score (BCS) at calving on metabolic status female Murrah buffaloes in transition period. Methods Thirty-seven pregnant (multiparous) were selected and monitored during period based their estimated date. Two groups formed: i) with a BCS>3.5 (n = 17); group classified named 'high BCS calving' (HBCS); ii) BCS≤3.5 20); 'low (LBCS). All animals last 30 days pregnancy first 70 post-calving kept same environment under...

In this study, we investigated the beneficial effects of milk biofortified with antioxidants on health children. Two experiments were conducted: experiment one evaluated 24 Jersey dairy cows (450 ± 25 kg body weight (BW); 60 30 days in dry matter intake (DIM)) given different diet treatments (CON = control diet; COANT vitamin E and selenium as antioxidants; OIL sunflower oil; OANT oil containing more antioxidants), two effect produced first children SM skim milk). One hundred (8 to 10 years...

The objective of this study was to evaluate the effects association cottonseed processing method with chitosan on carcass traits and meat quality lambs finished in feedlot. Eighty an average body weight 20.6 kg, 04 months age, were distributed a completely randomized design, 2 x factorial arrangement. factors represented by two (whole or ground) levels (0 136 mg/kg BW). lamb diet did not affect (P>0.05) carcasses traits. pH, color, cooking losses, shear force, proximate composition also...

Vinte e cinco vacas mestiças Holandês × Zebu foram utilizadas para avaliar o efeito da condição corporal ao parto sobre a produção composição do leite mobilização de reservas corporais, avaliada por meio variação até os 120 dias lactação. Os animais divididos em duas classes, acordo com seu escore (ECCP), uma escala 1 (muito magra) 5 gorda): classe 1, ECCP > 3,25; 2, <3,25. As classes diferiram entre si quanto parto; as médias 3,71 2,58, respectivamente, das 2. apresentaram maior...

O objetivo neste estudo foi avaliar o desempenho produtivo de vacas leiteiras sob suplementação com óleo soja durante período transição. Foram utilizadas 20 da raça Holandesa, multíparas e gestantes, distribuídas aleatoriamente em duas rações: controle, 2,5% extrato etéreo (EE) na matéria seca (MS); gordura, adição 3,0% 5,5% EE MS. Os valores médios consumo MS nutrientes não diferiram no pré pós-parto nas das dietas controle soja, exceto maior EE, decorrência concentração desse nutriente...

The objective of this study was to evaluate the agronomic characteristics, bromatological-chemical composition and digestibility 11 corn cultivars (Zea mays) harvested at two cutting heights. Cultivars D 766, 657, 1000, P 3021, 3041, C 805, 333, AG 5011, FO 01, CO 9621 BR 205 were evaluated when they 5 cm above ground (low) below insertion first ear (high). experiment designed as random blocks, with three replicates, arranged in an x 2 factorial scheme. presented similar productions forage...

The objective of this study was to evaluate the effects polymer coated slow-release urea (SRU) in high-forage diets beef steers on nutrient intake and digestibility, ruminal fermentation, microbial protein synthesis, energy balance. Eight 24-mo-old rumen-fistulated castrated Nellore (average body weight = 418.0±40.0 kg) were used a replicated 4 × Latin square design. Animals randomly distributed receive one following diets: no inclusion; 1.0% inclusion feed grade diet (dry matter [DM]...