A5056253010- Ruminant Nutrition and Digestive Physiology
- Reproductive Physiology in Livestock
- Genetic and phenotypic traits in livestock
- Rabbits: Nutrition, Reproduction, Health
- Animal Nutrition and Physiology
- Animal Nutrition and Health
- Effects of Environmental Stressors on Livestock
- Protein Hydrolysis and Bioactive Peptides
- Turfgrass Adaptation and Management
- Agroforestry and silvopastoral systems
- Meat and Animal Product Quality
- Botanical Research and Chemistry
- Real-Time Systems Scheduling
- Moringa oleifera research and applications
- Bee Products Chemical Analysis
- Plant and fungal interactions
- Advanced Control Systems Optimization
- Growth and nutrition in plants
- Coccidia and coccidiosis research
- Calpain Protease Function and Regulation
- Microbial Metabolism and Applications
- Fatty Acid Research and Health
- Veterinary Equine Medical Research
- Reproductive Biology and Fertility
- Chromatography in Natural Products
Universidade de São Paulo
2016-2023
Fundação de Estudo e Pesquisa em Medicina Veterinária e Zootecnia
2023
Universidade Brasil
2021
Biblioteca Nacional de España
2019
Prefeitura do Município de São Paulo
2019
Methodist University of Piracicaba
2018
Universidade Metodista de São Paulo
2018
Abstract The aim of the present study was to evaluate inclusion narasin, salinomycin, or flavomycin for 140 d on ruminal fermentation parameters, apparent nutrient digestibility, and performance Nellore cattle offered a forage-based diet. In experiment 1, 32 rumen-cannulated Bos indicus steers [initial body weight (BW) = 220 ± 12.6 kg] were assigned individual pens in randomized complete block design according their initial shrunk BW. Within block, animals randomly 1 4 treatments: (1) diet...
This study evaluated the effects of narasin on intake and rumen fermentation characteristics Bos indicus steers offered a high-forage diet for 140 d. On day 0 study, 30 rumen-fistulated Nellore [initial body weight (BW) = 281 ± 21 kg] were assigned to individual pens in randomized complete block design according their initial BW. Animals randomly 1 3 treatments: 1) forage-based without (CONT; n 10), 2) CONT plus 13 ppm (13NAR; 3) 20 (20NAR; 10). The forage used was Tifton-85 (Cynodon...
Two experiments were proposed to evaluate the addition of monensin for lambs fed diets containing a high level mature ground flint corn. The experimental as follows: no inclusion (M0) and 8 (M8), 16 (M16) 24 mg kg–1 (M24). In experiment 1, eight cannulated wethers divided into double 4 × Latin square design nutrient digestibility, plasma parameters rumen fermentation. lasted 112 days, four periods 28 days each. 2, ninety-two used in randomized block performance over 56 days. doses had effect...
Narasin is an antibacterial agent that may change rumen fermentation. Two experiments were proposed to evaluate the efficiency of narasin inclusion for lambs fed a diet containing high amounts ground flint corn. Thirty rumen-cannulated wethers used nutrient digestibility, nitrogen balance, and metabolism (Exp. 1); forty-five performance 2) animals with corn diets. The experimental diets were: control or basal without additives (C); 25 mg monensin kg−1 dry matter (DM) (M); 5 (N5), 10 (N10),...
Abstract Two experiments were designed to evaluate the impacts of supplementing lasalocid (LAS), narasin (NAR), or virginiamycin (VRM) on rumen fermentation parameters, apparent nutrient digestibility, and blood parameters (Exp. 1), as well feed intake performance 2) Nellore cattle consuming a forage-based diet. In Exp. 1, 32 rumen-fistulated steers (initial shrunk body weight [BW] = 355 ± 4.4 kg) assigned randomized complete block design. Within block, animals randomly one four treatments:...
This study aimed to evaluate the effects of decreasing permanence period progesterone (P4) inserts from 9 (9d) 7 (7d) days in timed-AI (TAI) protocol, as well their reuse on pregnancy per AI (P/AI) during 7d protocol. At beginning all protocols, cows received 2 mg estradiol benzoate (EB) and a vaginal insert containing 1.9 g P4. In P4 was removed, were given 25 prostaglandin F2α, 0.6 cypionate 300 IU eCG later. 9d same hormones that administrated however, they applied 9th day experiment I,...
ABSTRACT Two experiments were conducted to evaluate the effect of thyme (Thymus vulgaris) essential oil (EO) doses on rumen fermentation, nutrient digestibility, and nitrogen metabolism, as well performance coccidia oocyst discharge. In experiment I, 20 rumen-cannulated wethers received experimental diets containing 80% dry matter (DM) haylage 20% DM concentrate. Treatments 25mg monensin/kg or 1.25, 2.50, 3.75g EO/kg DM. II, 50 ewe lambs same from including a diet without feed additives....
The objective of this study was to evaluate the effects different combinations monensin and narasin on finishing cattle. In Exp. 1, 40 rumen-cannulated Nellore steers [initial body weight (BW) = 231 ± 3.64 kg] were blocked by initial BW assigned one five treatments as follows: Control (CON): no feed additive in basal diet during entire feeding period; Sodium (MM) at 25 mg/kg dry matter (DM) period [adaptation (days 1-21) 22-42) periods]; Narasin (NN) 13 DM (adaptation periods); adaptation...
The changes promoted by feed additives in ruminal fermentation, especially increasing the availability of propionate, can improve energy balance an animal, which is great importance lactation period. This trial aimed to evaluate inclusion narasin diet lactating ewes on milk yield, composition, dry matter intake (DMI), and plasma metabolites growth rate lambs. Thirty-two (59.0 ± 2.42 kg) were assigned a randomized complete block design. experimental diets contained 500 g/kg (DM) coast cross...
ABSTRACT This trial aimed to evaluate the effects of thyme essential oils (EO) on rumen parameters, nutrient digestibility and nitrogen balance in wethers fed with high-concentrate diet. Twenty rumen-cannulated were blocked according body weight (BW= 64.0±2.1kg), received one following treatments: 25mg monensin/kg dry matter (DM; MON) or doses EO (1.25, 2.50 3.75g/kg DM). The diet was composed 90% concentrate. Thyme mainly by thymol (46.6% DM) p-cymene (38.9% intake apparent similar among...
Abstract The study aimed to evaluate if the frequency of narasin supplementation impacts dry matter intake, ruminal fermentation parameters, and apparent digestibility nutrient in Nellore (Bos indicus) steers fed forage-based diets. A total 32 rumen-cannulated (initial body weight [BW] = 317 ± 27 kg; age =18 1 mo) were assigned individual pens a randomized complete block design according their initial shrunk BW. Within block, randomly 4 treatments: 1) diet without addition (CON; n 8), 2) CON...
Narasin, an ionophore used in poultry, improved BW gain and feed efficiency cattle fed high forage. However, there is little information about the effect of narasin for a high-grain diet. The objective this study was to determine adding mineral mixture (MM) on intake feedlot Nellore heifers Sixty at 12 ± 1 mo age were assigned randomized complete block design, defined by initial (244 4 kg), housed 20 pens (3 per pen). experimental treatments either control, with no added, or 1,300 mg...
The aim of this study was to determine the effects three additives (Narasin, Lasalocid and Virginiamycin) on rumen fermentation characteristics steers fed high-forage diet. Thirty-two rumen-fistulated Nellore were assigned a randomized completed block design, according their initial BW. Steers daily diets composed 99% coastcross haylage 1% concentrate, used as delivery vehicle for additives. concentrate forage offered separately, whereas after entire consumption concentrate. experimental...
Essential oil (EO) from Brazilian red pepper leaves contains antimicrobial compounds that control Gram-positive bacteria in the rumen content, improving efficiency of ruminal fermentation. The objectives present study were to evaluate effects EO (Schinus terebinthifolius) as a substitute for monensin on performance, occurrence coccidiosis by Eimeria ssp., carcass characteristics and meat composition feedlot lambs. Forty-four lambs, 16 males (12 ½ Dorper × Santa Inês 4 Inês) 28 females (16 12...
The objective of this trial was to determine the effect narasin inclusion into a mineral salt on performance grazing bulls. Two hundred and forty Nellore yearling bulls were blocked by initial BW (193.1 ± 3.34 kg) assigned 32 paddocks (16 paddocks/treatment). Sixty-two Brachiaria brizantha with 1 ha each used, whereas paddock continuously grazed 28 d, followed resting period d. Paddocks rotated among treatments every d minimize possible variation. experimental lasted 112 divided 4 periods...
Abstract The aim of this study was to compare the effects three additives (narasin, lasalocid, and virginiamycin) on performance bulls fed a high-forage diet. One hundred sixty Nellore (Bos indicus) yearling were assigned randomized completed block design, according initial BW (212.5 kg ± 3.1; 10 pen/treatment; 4 animals/pen). Yearling daily diets composed 96% coastcross haylage (12% CP) 4% concentrate, used as delivery vehicle for additives. Once day, concentrate forage offered separately....