Residual feed intake and its effect on carcass and meat characteristics of feedlot Zebu cattle

Ribeiro, Julimar do Sacramento; Gonçalves, Tarcisio de Moraes; Ladeira, Márcio Machado; Campos, Fabrício Rodrigues; Túllio, R. R.; Neto, Otávio Rodrigues Machado; Oliveira, De; Bassi, Marcelo Silva

doi:10.1590/s1516-35982012000600027

Cited by 5 publications

(3 citation statements)

References 17 publications

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“…A study with Senepol bulls showed that low RFI animals had a lower rump fat thickness (RF), although the size reduction was not accompanied by a reduction in backfat thickness (BF) [ 16 ]. On the other hand, several authors have observed phenotypic correlation ranged 0.03 to 0.16 between RFI and carcass traits [ 11 , 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of Feeding and Drinking Behavior on Performance and Carcass Traits in Beef Cattle

Pires

Reolon

Abduch

et al. 2022

Animals

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Feed and water efficiency are important traits to improve beef cattle production’s economic and environmental sustainability. This study evaluated residual feed intake (RFI) and residual water intake (RWI) and their relationship with performance, ingestive behavior, and carcass traits in Caracu beef cattle. The data were analyzed using a generalized linear model with least squares means. The ingestive behavior, performance, and carcass traits were influenced by sex (p < 0.05). Males showed higher dry matter intake (DMI), average daily gain (ADG), mid-test metabolic weight (BW0.75), rib eye area, and rump fat thickness than females, besides spending more time drinking and eating. Low RFI animals exhibited higher DMI than high RFI animals. Low RWI animals ingested 3.89 L/d of water further than high RWI animals. The interaction between sex and RWI influenced the DMI, BW0.75, and backfat thickness. The ingestive behavior of low and high RFI animals was similar, although high RWI animals visited a smaller number of drinkers than low RWI animals. Water intake positively affects productive efficiency, and the combined use of RWI and RFI may help improve the selection of more efficient animals contributing to reducing the costs of beef cattle production and improving environmental sustainability.

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Section: Introductionmentioning

confidence: 99%

Effects of Feeding and Drinking Behavior on Performance and Carcass Traits in Beef Cattle

Pires

Reolon

Abduch

et al. 2022

Animals

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“…Studies on Bos taurus and Bos indicus have reported a greater longissimus muscle area and less carcass fat thickness in high-efficiency animals compared with low-efficiency animals Basarab et al, 2003;Herd et al, 2003;Santana et al, 2012). On the other hand, a phenotypic correlation of low magnitude between RFI and subcutaneous fat thickness and similar fat thickness in high-efficiency and low-efficiency animals has been reported (Lancaster et al, 2009a;Ribeiro et al, 2012;Bonilha et al, 2013;Chaves et al, 2015).…”

Section: Introductionmentioning

confidence: 98%

Phenotypic association between feed efficiency and feeding behavior, growth and carcass traits in Senepol cattle

Guimarães¹,

Mercadante²,

Canesin³

et al. 2017

R. Bras. Zootec.

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-The objective of this study was to evaluate the associations between feed efficiency and feeding behavior, growth and carcass traits in Senepol cattle. A total of 137 animals were evaluated. Of these animals, 36 males were evaluated in a second test, totaling 173 records (initial age of 466±96 days and initial weight of 426±104 kg). Residual feed intake (RFI) was calculated as the difference between observed and expected dry matter intake, estimated by regression of dry matter intake on average daily gain and metabolic body weight (BW 0.75 ), and the animals were classified as negative (high efficiency) and positive RFI (low efficiency). The mean RFI was -0.838±0.078 and 0.797±0.075 kg DM day -1 for negative and positive RFI animals, respectively, with a difference of 1.63 kg dry matter day -1 . The dry matter intake of negative RFI animals, expressed as kg day -1 and percentage of mean body weight, was 11.3% and 13.1% lower than that of positive RFI animals. Negative RFI animals spent less time at the feed bunk and ingested less dry matter per visit than positive RFI animals, but did not differ in terms of chest girth, scrotal circumference, or hip height. However, negative RFI animals had lower rump fat deposition (7.13±0.477 mm) than positive RFI animals (7.83±0.473 mm). The Spearman correlation between RFI estimated in the first and second tests was 0.69, indicating that RFI is consistent when evaluated during two different periods of the life of the animal. Senepol animals with low residual feed intake (high efficiency) deposit less subcutaneous rump fat, but this reduction is not accompanied by a reduction in backfat thickness and longissimus muscle area.

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“…Meanwhile, increase in urban population and disposable income triggers increase in demand for beef, being one of the major animal protein sources [8]. Fattening as a short-term feeding intervention for improving productivity is highly challenged by the rapidly rising concentrate feeds' cost [9]. On the other hand, improving productivity via plane of nutrition through pasture establishment without improving genetic potential appears to be economically lowly viable with most of indigenous breeds because of their low production coefficients [10].…”

Section: Introductionmentioning

confidence: 99%

Adapting Selection Schemes for Indigenous Cattle Improvement in Sub-Saharan Africa-A Review

Chasama

Katandukila

Hepelwa

2023

EJFOOD

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Livestock keeping is an important livelihood option in the tropics and cattle play the major role. For sub-Saharan Africa, most of the cattle kept are of indigenous type exhibiting low to medium production coefficients. After realizing low impact with crossbreeding in improving their productivity during the first three quarters of the 20th century, many sub-Saharan Africa countries turned to adoption of selection schemes during the last quarter of the century. However, many countries still haven’t realized active operation of selection schemes for indigenous breeds improvement. Major constraints are unsustainable financing, weak coordination, inadequate policy support and weak technical foundation for animal breeding. Existing infrastructure networks are not supporting extensive operation of selective breeding. Systematized pedigree and performance data recording is lacking in many countries. Important guidelines for streamlining implementation of breeding operations among actors are not in place. Strategies for adapting selection schemes in sub-Saharan Africa should target exploitation of unique potentials of indigenous breeds and focus to the improvement of their productivity while also maintaining their adaptability. From the prevailing conditions, considering immediate transformation to farmer-operated central nuclei is not recommended in structuring the scheme. What is recommended is to start with dispersed village-based group pre-nuclei which are backed by institutional central nuclei. Important strategies in enabling effective operation with such structured schemes include evolving guidelines for implementing selection in terms of defining breeding objectives, increasing involvement of farmers, strengthening coordination of animal breeding, promoting inter-institutional collaboration, and considering some more government financial support.

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Residual feed intake and its effect on carcass and meat characteristics of feedlot Zebu cattle

Cited by 5 publications

References 17 publications

Effects of Feeding and Drinking Behavior on Performance and Carcass Traits in Beef Cattle

Effects of Feeding and Drinking Behavior on Performance and Carcass Traits in Beef Cattle

Phenotypic association between feed efficiency and feeding behavior, growth and carcass traits in Senepol cattle

Adapting Selection Schemes for Indigenous Cattle Improvement in Sub-Saharan Africa-A Review

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