AI Article Synopsis
- The study assessed the performance, carcass traits, feeding behavior, and immune response of Nellore and Angus × Nellore steers on whole shelled corn diets.
- Angus × Nellore steers showed better final body weight, daily feed intake, and growth rates compared to Nellore steers, while Nellore spent more time ruminating.
- Steers on diets including sugarcane bagasse had higher feed intake and ruminating time, and the inclusion of this ingredient improved growth without negatively impacting feed efficiency or carcass traits.
Article Abstract
This study aimed to evaluate performance, to evaluate performance, carcass traits, feeding behavior, and humoral immune response in Nellore and Angus × Nellore steers fed whole shelled corn diets. Sixteen Nellore and 16 Angus × Nellore steers with 353 ± 25.3 kg were randomly assigned into 2 feeding groups, whole shelled corn without forage (WSC) or whole shelled corn and sugarcane bagasse (WSCB). The data were analyzed using the MIXED procedure of SAS (SAS Inst. Inc., Cary, NC, USA). Angus × Nellore steers had greater final BW, DMI, ADG, and subcutaneous fat thickness than Nellore. Moreover, Nellore steers had lower neutral detergent fiber (NDF) intake but spent more time ruminating and had a greater rumination rate of NDF. Regarding the diets, steers fed the WSCB had greater DMI and spent more time chewing and ruminating. Nellore × Angus steers had a greater haptoglobin concentration. The concentration of D-Lactate tended to be greater in the Nellore steers regardless of diet. In conclusion, the use of sugarcane bagasse in WSC diets increases DMI and ADG without affecting feed efficiency or the carcass traits of the steers. Although Angus × Nellore steers have increased haptoglobin concentration, this effect was not enough to reduce the performance of these animals.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9558971 | PMC |
| http://dx.doi.org/10.3390/ani12192692 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Muscle tissue transcriptome of F1 Angus-Nellore bulls and steers feedlot finished: impacts on intramuscular fat deposition.
BMC Genomics
December 2024
College of Agriculture and Veterinary Sciences (FCAV), Department of Animal Science, São Paulo State University "Júlio de Mesquita Filho" (UNESP), Jaboticabal, SP, 14884-900, Brazil.
Background: Castration is a common practice in beef cattle production systems to manage breeding and enhance meat quality by promoting intramuscular fat (IMF) deposition, known as marbling. However, the molecular mechanisms that are influenced by castration in beef cattle are poorly understood. The aim of this study was to identify differentially expressed genes (DEGs) and metabolic pathways that regulate IMF deposition in crossbred cattle by RNA sequencing (RNA-Seq) of skeletal muscle tissue.
View Article and Find Full Text PDFSoybean Hulls and White Oat Grains in Steer Finishing.
An Acad Bras Cienc
November 2024
Universidade Federal de Santa Maria, Centro de Ciências Rurais, Departamento de Ciência dos Alimentos, Avenida Roraima, 1000, Bairro Camobi, 97105-900 Santa Maria, RS, Brazil.
This study aimed to investigate the feasibility of using ground soybean hulls and white oat grains to finish steers reared exclusively on concentrated feed. We used 33 steers, predominantly of Charolais or Nellore breeds, and randomly assigned the animals to the treatments, blocking them according to genetic predominance. The diets were isonitrogenous, and the treatments consisted of soybean hulls, white oats, and mix these in equal parts, supplemented with calcitic limestone and a protein nucleus.
View Article and Find Full Text PDFEffects of monensin and a blend of magnesium oxide on performance, feeding behavior, and rumen morphometrics of Zebu beef cattle fed high-starch diets.
Transl Anim Sci
September 2024
Department of Animal Science - Universidade Federal de Lavras, Lavras, MG, Brazil.
This study aimed to evaluate the effects of a blend of different sources of magnesium oxide associated or not with monensin, on productive, ruminal, and nutritional parameters of steers. Eighty-four Nellore steers with an initial body weight (BW) of 367.3 ± 37.
View Article and Find Full Text PDFProductive performance and carcass characteristics of castrated and non-castrated Beefalo-Nellore beef cattle finished in a feedlot or kept on pasture.
Trop Anim Health Prod
September 2024
Departamento de Zootecnia, Universidade Federal Do Piauí, Bom Jesus, PI, Brazil.
Beefalo is a fertile hybrid descendant of domestic cattle (Bos taurus) and American buffalo (Bison bison). Crossbred (¾Beefalo¼Nellore) beef cattle raised and finished in a feedlot or on pasture were evaluated for the effect of two ages (8 and 13 months) at castration on nutrient intake, performance, and carcass characteristics. In the feedlot, they received a total diet with a roughage:concentrate ratio of 55:45, and those kept on Brachiaria decumbens pastures were supplemented at 0.
View Article and Find Full Text PDFEffect of forage quality and narasin inclusion on ruminal fermentation, nutrient intake, and total tract digestibility of Nellore steers.
Transl Anim Sci
July 2024
Department of Biology and Animal Science, São Paulo State University "Julio de Mesquita Filho," Ilha Solteira, SP, 15385-000, Brazil.
The study aimed to evaluate the effects of forage quality and narasin inclusion on intake, digestibility, and ruminal fermentation of Nellore steers. Twenty-eight rumen-cannulated Nellore steers (initial body weight [] = 350 ± 32.4 kg) were allocated to individual pens in a randomized complete block design, with 7 blocks, defined according to the fasting BW at the beginning of the experiment.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!