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3 results on '"L.H.C. Batista"'

1. Replacement Nellore heifers receiving supplementation under different herbage allowance: effects on forage characteristics, performance, physiology, and reproduction

Author

I.M. Ferreira, B.G.C. Homem, K.A. Oliveira, I.A. Cidrini, M.J.I. Abreu, L.H.C. Batista, A.N. Rodrigues, A.C.M. Queiroz, G.H.M. Bisio, L.F. Prados, M.H. Moretti, G.R. Siqueira, and F.D. Resende

Subjects
Bos indicus, Gene expression, Liveweight gain per area, Replacement heifers, Reproduction, Animal culture, SF1-1100
Abstract

In Brazil, heifers typically calve at 36–48 months. Due to the high demand for meat and the need to reduce slaughter age, high supplementation has become commonly used in beef cattle farming. However, the literature remains scarce on studies that explore the impact of grazing management during the background phase on the productivity and reproductive efficiency of young Nellore heifers. This study aimed to evaluate the effects of two-herbage allowances (HA) on forage characteristics, performance, physiology and reproductive parameters of replacement Nellore heifers. Ninety weaned heifers [169 ± 19 kg of shrunk body weight (SBW); 210 ± 28 days of age] were blocked by initial BW and randomly assigned to receive different HA: (1) High herbage allowance (HHA: 7.2 kg DM/kg BW) and (2) Low herbage allowance (LHA: 3.3 kg DM/kg BW); and divided into six paddocks, totaling 12 paddocks. The experimental period was divided into the growing phase (D173) and the reproductive season (D83). Continuous stocking with a variable stocking rate was used. The supplement was provided daily with expected intake of around 10 g/kg of BW. The HHA pasture showed greater values of canopy height, greater HA, and lower values of CP and CP: in vitro digestible DM ratio than the LHA pasture over the days of the study (P ≤ 0.05). Herbage mass and the green stem proportion were lower in LHA pasture (P

Published
2024
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2. Impact of 48-h water and feed deprivation and hydroxychloride sources of copper and zinc on the metabolism and performance of grazing Nellore cattle during the dry period

Author

M.J.I. Abreu, I.A. Cidrini, I.M. Ferreira, L.H.C. Batista, G.H.M. Bisio, M.Q.S. França, I.A. Reis, A.N. Rodrigues, A.C.M. Queiroz, J.M.C. Neto, D.B. Araújo, M.A.F. Porcionato, F.D. Resende, and G.R. Siqueira

Subjects
Beef cattle, Cattle on pasture, Fiber digestibility, Source of mineral, Water and feed deprivation, Animal culture, SF1-1100
Abstract

Procedures such as transport and marketing can subject animals to water and feed deprivation and impair animal health and performance. Maintaining the mineral status of animals under these conditions can bring benefits to health and performance. The use of hydroxychloride mineral sources can improve mineral status, nutrient digestibility and performance. Two studies were conducted to investigate how the supplementation of 02 trace mineral sources of Cu and Zn and 48-hour water/feed deprivation would affect the performance and metabolism of grass-fed beef cattle. In the first study, 20 castrated and rumen-canulated Nellore steers (BW = 350 ± 132 kg; 20 m) were distributed in individual pens, in a 2 × 2 factorial arrangement: supplemental Cu and Zn sources from inorganic vs hydroxychloride (HTM) and 48-hours deprivation (WFD) vs unrestricted (WFU) access to water and feed. The 57d of study was divided into two periods: (1) Adaptation from −21d to −1d and (2) evaluation from 0d to 36d. Interaction between deprivation × period was detected (P

Published
2024
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3. A meta-analysis of yeast products for beef cattle under stress conditions: Performance, health and physiological parameters

Author

L.H.C. Batista, I.A. Cidrini, L.F. Prados, A.A.C. Cruz, J.A. Torrecilhas, G.R. Siqueira, F.D. Resende, Universidade Estadual Paulista (UNESP), and Agência Paulista de Tecnologia dos Agronegócios (APTA)

Subjects
Rumen pH, Sacchaomyces cerevisiae, Active dry yeast, Animal Science and Zoology, Yeast cell wall, Newly weaned beef cattle, Finishing cattle
Abstract

Made available in DSpace on 2022-04-28T19:48:31Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-01-01 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Yeast products (live yeast, yeast cell wall, yeast culture) have been added to the diet of beef cattle under conditions that characterize stress, such as receiving period, high-concentrate finishing diet, periods of elevated ambient temperature, with variable responses in animal performance, health and physiological parameters. Therefore, we conducted a meta-analysis to examine the yeast product's effects on performance parameters, health, and physiological responses of beef cattle. Studies that met the selection criteria included 27 articles. Twenty-seven studies with up to 119 treatments means were included in the data set. The magnitude of the effect (effect size) was assessed using weighted mean differences (WMD) for continuous results, between the yeast products addition and control treatments. The binary results (health parameters) were examined using risk ratio (RR). Heterogeneity was explored by meta-regression and subgroup analysis. The addition of yeast products increased (P ≤ 0.04) animal performance with increase in dry matter intake (DMI; WMD = 0.083 kg/d), average daily gain (ADG; WMD = 0.036 kg/d), final body weight (WMD = 3.75 kg), and feed efficiency (WMD = 2.08 g/kg). In the current study, most of the responses had low heterogeneity (I2 < 25%), which means low inconsistency in the effect size estimates and independent response from the possible sources of heterogeneity included. Yeast products increased (P ≤ 0.02) the digestibility of dry matter (WMD = 11.84 g/kg), organic matter, (WMD = 15.88 g/kg), crude protein (WMD = 26.99 g/kg), neutral detergent fiber (WMD = 36.84 g/kg) and, increased the average ruminal pH (WMD = 0.088), enabling a reduction in the risk ratio of severely abscessed occurrence (RR = 0.41). In blood parameters, yeast products decreased glucose (P < 0.01; WMD = −5.47 mg/dL) and increased (P ≤ 0.04) urea (WMD = 1.59 mg/dL) and non-esterified fatty acid (WMD = 0.006 mM) concentrations. The acute-phases protein concentrations (Amyloid A, WMD = 3.79 μg/mL and lipopolysaccharide-binding protein WMD = 11.01 μg/mL) were also increased (P = 0.01) when the yeast product was fed. On the other hand, the risk ratio of occurrence of morbidity and mortality were similar (P ≥ 0.49; RR = 0.94 and 0.77 respectively). This meta-analysis indicated that yeast products increased animal performance, and the benefits can be attributed to better rumen health and increases in nutrient digestibility. São Paulo State University (UNESP) - Faculdade de Ciências Agrárias e Veterinárias (FCAV) Agência Paulista de Tecnologia dos Agronegócios (APTA) Professor of the graduate program in Animal Science at São Paulo State University (UNESP) and Researcher at Agência Paulista de Tecnologia dos Agronegócios (APTA) São Paulo State University (UNESP) - Faculdade de Ciências Agrárias e Veterinárias (FCAV) Professor of the graduate program in Animal Science at São Paulo State University (UNESP) and Researcher at Agência Paulista de Tecnologia dos Agronegócios (APTA) CNPq: 141577/2020-7 FAPESP: 2018/20176–0

Published
2022

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