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de Figueiredo Moura JR, Ítavo LCV, Gurgel ALC, Ítavo CCBF, de Nadai Bonin Gomes M, Longhini VZ, Dias AM, Dos Santos Difante G, Dos Santos GT, Arcanjo ÂHM, Chay-Canul AJ. Prediction models of carcass characteristics from non‑castrated Nellore cattle finished in the feedlot system under tropical conditions. Trop Anim Health Prod 2023; 55:427. [PMID: 38041713 DOI: 10.1007/s11250-023-03854-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 11/27/2023] [Indexed: 12/03/2023]
Abstract
Our objective was to use measures of intake and productive performance to adjust prediction models for the carcass traits of non-castrated Nellore cattle finished in a feedlot. Individual data from 168 non-castrated male Nellore steers finished in feedlot between the years 2016-2021 were used. Descriptive statistical analyzes and Pearson correlation coefficients were performed. The outliers were tested by evaluating the studentized residuals in relation to the values predicted by the equations. Residues that were outside the range of -2.5 to 2.5 were removed. The goodness of fit of the developed equations was evaluated by the coefficients of determination (R2) and root mean square error (RMSE). Models for carcass yield, subcutaneous fat thickness, ribeye area, and shear force were adjusted. Means of 53.5% carcass yield, 4.8 mm subcutaneous fat thickness, 73 cm2 loin eye area, and 8.1 kg shear force were observed. The observed average intakes were 9.9 kg/day of dry matter, 3.3 kg/day of neutral detergent fiber content, 1.5 kg/day of crude protein, and 7.1 kg/day of total digestible nutrients. The average confinement time was 113 days, the average total weight gain was 152.2 kg and the average daily gain was 1.35 kg/day. Intake measures significantly correlated with shear force and subcutaneous fat thickness and ribeye area. Carcass yield was significantly correlated with total weight gain, feedlot time, and hot carcass weight. Measures of nutrient intake, performance, and confinement time can be used as predictors of carcass yield, ribeye area, fat thickness, and shear force of non-castrated Nellore cattle finished in a feedlot. The prediction equations for ribeye area, carcass yield, subcutaneous fat thickness, and shear force showed sufficient precision and accuracy for non-castrated Nellore cattle finished in confinement systems under tropical conditions. All equations can be used with caution to estimate carcass traits of cattle finished in a feedlot using measures of intake and productive performance.
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Affiliation(s)
- Jessika Rodrigues de Figueiredo Moura
- Faculdade de Medicina Veterinária e Zootecnia - FAMEZ, Universidade Federal de Mato Grosso Do Sul, Av. Senador Filinto Müller, 2443. Cidade Universitária. CEP, 79070-900, Campo Grande, MS, Brasil
| | - Luís Carlos Vinhas Ítavo
- Faculdade de Medicina Veterinária e Zootecnia - FAMEZ, Universidade Federal de Mato Grosso Do Sul, Av. Senador Filinto Müller, 2443. Cidade Universitária. CEP, 79070-900, Campo Grande, MS, Brasil.
| | | | - Camila Celeste Brandão Ferreira Ítavo
- Faculdade de Medicina Veterinária e Zootecnia - FAMEZ, Universidade Federal de Mato Grosso Do Sul, Av. Senador Filinto Müller, 2443. Cidade Universitária. CEP, 79070-900, Campo Grande, MS, Brasil
| | - Marina de Nadai Bonin Gomes
- Faculdade de Medicina Veterinária e Zootecnia - FAMEZ, Universidade Federal de Mato Grosso Do Sul, Av. Senador Filinto Müller, 2443. Cidade Universitária. CEP, 79070-900, Campo Grande, MS, Brasil
| | - Vanessa Zirondi Longhini
- Faculdade de Medicina Veterinária e Zootecnia - FAMEZ, Universidade Federal de Mato Grosso Do Sul, Av. Senador Filinto Müller, 2443. Cidade Universitária. CEP, 79070-900, Campo Grande, MS, Brasil
| | - Alexandre Menezes Dias
- Faculdade de Medicina Veterinária e Zootecnia - FAMEZ, Universidade Federal de Mato Grosso Do Sul, Av. Senador Filinto Müller, 2443. Cidade Universitária. CEP, 79070-900, Campo Grande, MS, Brasil
| | - Gelson Dos Santos Difante
- Faculdade de Medicina Veterinária e Zootecnia - FAMEZ, Universidade Federal de Mato Grosso Do Sul, Av. Senador Filinto Müller, 2443. Cidade Universitária. CEP, 79070-900, Campo Grande, MS, Brasil
| | - Geraldo Tadeu Dos Santos
- Faculdade de Medicina Veterinária e Zootecnia - FAMEZ, Universidade Federal de Mato Grosso Do Sul, Av. Senador Filinto Müller, 2443. Cidade Universitária. CEP, 79070-900, Campo Grande, MS, Brasil
| | - Ângelo Herbert Moreira Arcanjo
- Faculdade de Medicina Veterinária e Zootecnia - FAMEZ, Universidade Federal de Mato Grosso Do Sul, Av. Senador Filinto Müller, 2443. Cidade Universitária. CEP, 79070-900, Campo Grande, MS, Brasil
| | - Alfonso Juventino Chay-Canul
- División Académica de Ciencias Agropecuarias, Universidade Juárez Autónoma de Tabasco, Villahermosa, Tabasco, 86280, México
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de Melo GKA, Ítavo CCBF, Ítavo LCV, Gurgel ALC, Dos Santos Difante G, Longhini VZ, Dias AM, de Melo Soares ES, da Silva Heimbach N, da Silva PCG, de Souza Arco TFF, da Silva JA, Ferelli KLSM, da Silva Miguel AA, de Godoy C, de Andrade PB. Mathematical models to predict the lamb weight at birth and at weaning reared in the tropical warm-climate pasture. Trop Anim Health Prod 2023; 55:330. [PMID: 37749453 DOI: 10.1007/s11250-023-03764-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 09/19/2023] [Indexed: 09/27/2023]
Abstract
Our objective was to evaluate the productive parameters of ewes and their lambs in relation to ewe age and to develop models for predicting lamb weight at birth and weaning in a tropical warm-climate pasture. Individual data were collected from 273 ewes and 273 lambs, between 2013 and 2021. During this period all animals were kept on pastures of Brachiaria brizantha cv. Marandu All lambs in the experiments were supplemented in creep-feeding. A descriptive statistical analysis was performed using the PROC SUMMARY procedure in SAS (SAS University Edition, SAS Institute Inc. Cary, CA, USA). Pearson correlation coefficients between variables were estimated using the PROC CORR procedure in SAS (SAS University Edition, SAS Institute Inc. Cary, CA, USA). Model adjustments and variable selection were performed using PROC REG in SAS (SAS University Edition, SAS Institute Inc. Cary, CA, USA). The STEPWISE option and Mallow's C(p) were used to select the variables included in the equations. Outliers were identified by evaluating the studentized residuals based on the predicted values from the equations. Residual analysis was predicted by regression minus observed values and those that fell outside the range of -2.5 to 2.5 were removed. Several statistics were used to assess the predictability of the equations, including the coefficients of determination (r2) and mean standard error (RMSE). The average ewe age at lambing was 3.4 ± 1.7 years, with an average weight of 56.9 ± 8,9 kg and average body condition score (BCS) of 2,4 ± 0.8 points. The average ewe age at weaning was 51.1 ± 7.9, with average BCS of 1.8 ± 0.8 points. The average lamb at birthing was 3.9 ± 0.9 kg. The average lamb at weaning was 21.0 ± 4.9, with daily gain of 0.2 ± 0.1 kg/day and total gain of 17.1 ± 4.7 kg birth to weaning. The lamb produced by ewe at lambing was 5.3 ± 1.7 kg/ewe. The lamb weaned by ewe at weaning was 28.7 ± 10.8 kg/ewe. The ratios of lamb produced per ewe at birth and at weaning were 0.1 ± 0.03 and 0.6 ± 0.2, respectively. The lamb's birth weight showed a positive linear relationship with the age of the ewe, increasing by 115 g per year of age. The regression equations adjusted for ewe age had maximum points ranging from 4.2 to 5.2, occurring at average age of 4,7 years. The other characteristics showed a quadratic tendency. The results suggest the culling of ewes at five years of age to generate lambs with ideal weight at birth and at weaning raised in warm tropical pastures.
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Affiliation(s)
- Gleice Kelli Ayardes de Melo
- College of Veterinary Medicine and Animal Science - FAMEZ, Universidade Federal de Mato Grosso Do Sul, Campo Grande, Mato Grosso Do Sul, 79070-900, Brazil.
| | - Camila Celeste Brandão Ferreira Ítavo
- College of Veterinary Medicine and Animal Science - FAMEZ, Universidade Federal de Mato Grosso Do Sul, Campo Grande, Mato Grosso Do Sul, 79070-900, Brazil
| | - Luís Carlos Vinhas Ítavo
- College of Veterinary Medicine and Animal Science - FAMEZ, Universidade Federal de Mato Grosso Do Sul, Campo Grande, Mato Grosso Do Sul, 79070-900, Brazil
| | | | - Gelson Dos Santos Difante
- College of Veterinary Medicine and Animal Science - FAMEZ, Universidade Federal de Mato Grosso Do Sul, Campo Grande, Mato Grosso Do Sul, 79070-900, Brazil
| | - Vanessa Zirondi Longhini
- College of Veterinary Medicine and Animal Science - FAMEZ, Universidade Federal de Mato Grosso Do Sul, Campo Grande, Mato Grosso Do Sul, 79070-900, Brazil
| | - Alexandre Menezes Dias
- College of Veterinary Medicine and Animal Science - FAMEZ, Universidade Federal de Mato Grosso Do Sul, Campo Grande, Mato Grosso Do Sul, 79070-900, Brazil
| | - Evelyn Silva de Melo Soares
- College of Veterinary Medicine and Animal Science - FAMEZ, Universidade Federal de Mato Grosso Do Sul, Campo Grande, Mato Grosso Do Sul, 79070-900, Brazil
| | | | - Pâmila Carolini Gonçalves da Silva
- College of Veterinary Medicine and Animal Science - FAMEZ, Universidade Federal de Mato Grosso Do Sul, Campo Grande, Mato Grosso Do Sul, 79070-900, Brazil
| | - Thais Fernanda Farias de Souza Arco
- College of Veterinary Medicine and Animal Science - FAMEZ, Universidade Federal de Mato Grosso Do Sul, Campo Grande, Mato Grosso Do Sul, 79070-900, Brazil
| | - Jonilson Araújo da Silva
- College of Veterinary Medicine and Animal Science - FAMEZ, Universidade Federal de Mato Grosso Do Sul, Campo Grande, Mato Grosso Do Sul, 79070-900, Brazil
| | - Kedma Leonora Silva Monteiro Ferelli
- College of Veterinary Medicine and Animal Science - FAMEZ, Universidade Federal de Mato Grosso Do Sul, Campo Grande, Mato Grosso Do Sul, 79070-900, Brazil
| | - Aline Aparecida da Silva Miguel
- College of Veterinary Medicine and Animal Science - FAMEZ, Universidade Federal de Mato Grosso Do Sul, Campo Grande, Mato Grosso Do Sul, 79070-900, Brazil
| | - Camila de Godoy
- College of Veterinary Medicine and Animal Science - FAMEZ, Universidade Federal de Mato Grosso Do Sul, Campo Grande, Mato Grosso Do Sul, 79070-900, Brazil
| | - Priscila Bernardo de Andrade
- College of Veterinary Medicine and Animal Science - FAMEZ, Universidade Federal de Mato Grosso Do Sul, Campo Grande, Mato Grosso Do Sul, 79070-900, Brazil
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de Figueiredo Moura JR, Ítavo LCV, Ítavo CCBF, Dias AM, Dos Santos Difante G, Dos Santos GT, Gurgel ALC, Chay-Canul AJ. Prediction models of intake and productive performance of non-castrated Nellore cattle finished in the feedlot system under tropical conditions. Trop Anim Health Prod 2023; 55:64. [PMID: 36735099 DOI: 10.1007/s11250-023-03488-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 01/23/2023] [Indexed: 02/04/2023]
Abstract
The objective of this study was to understand and predict the intake and performance of Nellore cattle finished in the feedlot. Individual data from 144 non-castrated male Nellore steers finished in the feedlot between the years 2016 and 2020 were used. Descriptive statistical analyses and Pearson's correlation were performed. The outliers were tested by evaluating the studentized residuals in relation to the values predicted by the equations. Residues that were outside the range of - 2.5 to 2.5 were removed. The goodness of fit of the developed equations was evaluated by the coefficients of determination (r2) and root mean square error (RMSE). The mean dry matter intake (DMI) was 10.2 kg/day, neutral detergent fiber intake (NDFI) was 3.4 kg/day, corresponding to 33.3% of DMI, crude protein intake (CPI) was 1.6 kg/day, and total digestible nutrient intake (TDNI) was 7.1 kg/day. The CPI to ADG ratio was 1.3 kg CPI/kg ADG and the TDNI to CPI ratio was 4.5 kg TDNI/kg CPI. The averages of productive performance were 1.3 kg/day for average daily gain (ADG), 152.6 kg for total weight gain (TWG), and 497.8 kg for final body weight (FBW) in average days in the confinement of 115.7 days. The intake measures correlated significantly with the performance measures, except for carcass yield and days in the feedlot. TWG had a high positive correlation with ADG (r = 0.84), while FBW had a positive correlation (r = 0.86) with hot carcass weight (HCW). Measures of intake, performance, and days in the feedlot can be used as predictors of DMI, FBW, HCW, TWG, and ADG. The prediction equations had satisfactory precision and accuracy for non-castrated Nellore cattle finished in feedlot systems under tropical conditions.
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Affiliation(s)
| | - Luís Carlos Vinhas Ítavo
- Faculdade de Medicina Veterinária E Zootecnia, Universidade Federal de Mato Grosso Do Sul, Mato Grosso Do Sul, Campo Grande, 79070-900, Brazil.
| | | | - Alexandre Menezes Dias
- Faculdade de Medicina Veterinária E Zootecnia, Universidade Federal de Mato Grosso Do Sul, Mato Grosso Do Sul, Campo Grande, 79070-900, Brazil
| | - Gelson Dos Santos Difante
- Faculdade de Medicina Veterinária E Zootecnia, Universidade Federal de Mato Grosso Do Sul, Mato Grosso Do Sul, Campo Grande, 79070-900, Brazil
| | - Geraldo Tadeu Dos Santos
- Faculdade de Medicina Veterinária E Zootecnia, Universidade Federal de Mato Grosso Do Sul, Mato Grosso Do Sul, Campo Grande, 79070-900, Brazil
| | - Antonio Leandro Chaves Gurgel
- Faculdade de Medicina Veterinária E Zootecnia, Universidade Federal de Mato Grosso Do Sul, Mato Grosso Do Sul, Campo Grande, 79070-900, Brazil
| | - Alfonso Juventino Chay-Canul
- División Académica de Ciencias Agropecuarias, Universidad Juárez Autónoma de Tabasco, 86280, Villahermosa, Tabasco, Mexico
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Rivera-Alegria FDM, Ríos-Rincón FG, Macías-Cruz U, Garcia-Herrera RA, Herrera-Camacho J, Benaouda M, Angeles-Hernandez JC, Muñoz-Benítez AL, Vargas-Bello-Pérez E, Chay-Canul AJ. Prediction of carcase characteristics using neck traits from hair-sheep ewes. ITALIAN JOURNAL OF ANIMAL SCIENCE 2021. [DOI: 10.1080/1828051x.2021.2018363] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Flor de María Rivera-Alegria
- División Académica de Ciencias Agropecuarias, Universidad Juárez Autónoma de Tabasco, Villahermosa, Tabasco, Mexico
| | | | - Ulises Macías-Cruz
- Instituto de Ciencias Agrícolas, Universidad Autónoma de Baja California, Mexicali, Mexico
| | - Ricardo A. Garcia-Herrera
- División Académica de Ciencias Agropecuarias, Universidad Juárez Autónoma de Tabasco, Villahermosa, Tabasco, Mexico
| | - José Herrera-Camacho
- Instituto de Investigaciones Agropecuarias y Forestales, Universidad Michoacana de San Nicolás de Hidalgo, Tarímbaro, Michoacán, Mexico
| | | | - Juan C. Angeles-Hernandez
- Instituto de Ciencias Agropecuarias, Universidad Autónoma del Estado de Hidalgo, Av. Universidad km. 1, Tulancingo de Bravo, Mexico
| | - Alfonso L. Muñoz-Benítez
- Instituto de Ciencias Agropecuarias, Universidad Autónoma del Estado de Hidalgo, Av. Universidad km. 1, Tulancingo de Bravo, Mexico
| | - Einar Vargas-Bello-Pérez
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg C, Denmark
| | - Alfonso J. Chay-Canul
- División Académica de Ciencias Agropecuarias, Universidad Juárez Autónoma de Tabasco, Villahermosa, Tabasco, Mexico
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Chen H, Zhou X, Yang Q. Safety evaluation of dufulin racemate and its R(S)-enantiomers in rats based on dose-effect relationship, time-effect relationship, and lipidomics. Toxicology 2021; 461:152895. [PMID: 34391840 DOI: 10.1016/j.tox.2021.152895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/07/2021] [Accepted: 08/09/2021] [Indexed: 10/20/2022]
Abstract
In the present study, the dose-effect and time-effect relationships of Dufulin racemate (rac-DFL) and its R(S)-enantiomers in rats were investigated after oral administration to evaluate their safety. A total of six doses (2.5, 5.0, 10.0, 20.0, 50.0, and 100.0 mg/kg) were administered and seven time-intervals (1 h, 3 h, 1 d, 3 d, 5 d, 7 d, and 14 d) were considered to observe the effects of rac-DFL, (R)-DFL, and (S)-DFL on general behavioral characteristics, liver and kidney functions, pathological changes, and lipid metabolism in rats. The results showed that the rats in each group exhibited a good mental state, agile activity, smooth and shiny fur, and normal diet. Viscera indices of heart, liver, spleen, lung, and kidney were 5.10-5.56, 4.15-4.59, 0.24-0.28, 6.08-6.48, and 11.02-11.98 mg/g for dose-effect relationships, and 5.01-5.94, 4.11-4.79, 0.24-0.30, 6.00-6.87, and 11.02-11.99 mg/g for time-effect relationships, respectively. Values of ALT, AST, TBil, DBil, IBil, BUN, Scr, β2-MG, and UA were 33.02-38.93 U/L, 108.17-126.53 U/L, 16.22-17.94 μmol/L, 5.75-8.12 μmol/L, 9.50-10.94 μmol/L, 4.03-5.85 mmol/L, 19.42-21.61 μmol/L, 48.16-52.73 mg/L, and 68.51-78.65 μmol/L, respectively. The statistical results showed that there were no significant differences in organ indices as well as liver and kidney function indices among different groups. In terms of pathological morphology, liver and kidney tissue sections of different groups of rats demonstrated normalcy. Rac-DFL, (R)-DFL, and (S)-DFL in the range of 2.5-100.0 mg/kg exerted no significant effect on lipid metabolism. Compared with the blank group, 35, 55, and 14 differential lipids were screened from rac-DFL, (S)-DFL, and (R)-DFL groups, respectively. These lipid changes completely returned to normalcy within 3 h. There were no significant differences at 1, 3, 5, 7, and 14 d after gavage. These results will aid further evaluation of the safety of dufulin and for provision of scientific evidence for its application as a pesticide.
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Affiliation(s)
- Huaguo Chen
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang, 550025, China; Guizhou Engineering Laboratory for Quality Control & Evaluation Technology of Medicine, Guizhou Normal University, 116 Baoshan North Rd., Guiyang, 550001, China.
| | - Xin Zhou
- Guizhou Engineering Laboratory for Quality Control & Evaluation Technology of Medicine, Guizhou Normal University, 116 Baoshan North Rd., Guiyang, 550001, China
| | - Qin Yang
- College of Civil Engineering, Guizhou University, Guiyang, 550025, China.
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Prediction of Carcass Traits of Santa Inês Lambs Finished in Tropical Pastures through Biometric Measurements. Animals (Basel) 2021; 11:ani11082329. [PMID: 34438786 PMCID: PMC8388382 DOI: 10.3390/ani11082329] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 07/06/2021] [Accepted: 07/14/2021] [Indexed: 11/17/2022] Open
Abstract
The aim of this study was to predict carcass traits of Santa Inês lambs finished in tropical pastures by using biometric measurements. Data originated from two experiments involving 56 lambs (32 in experiment I and 24 in experiment II). In both experiments, the sheep were finished in that were finished in pastures of Panicum maximum and Brachiaria brizantha, experiment I being conducted in the rainy season and experiment II in the dry season. The following biometric measurements were recorded before slaughter: body length (BL), withers height (WH), rump height (RH), thorax width (TW), rump width (RW), chest width (CW), heart girth (HG), thigh circumference (TC), rump circumference (RC) and leg length (LL), in addition to live weight at slaughter (SW). After slaughter, hot carcass weight (HCW), cold carcass weight (CCW) and the weights of primal cuts (shoulder, neck, loin, leg and rib) were recorded. In the equations generated to predict SW, HCW and CCW, R2 ranged from 0.58 to 0.91 and the measurements of WH, TC, CW, HG and RW were the most relevant. In the equations developed to predict the weight of primal cuts, in turn, R2 ranged from 0.26 to 0.99. In these models, SW, BL, CW, TC, LL and HG explained most of the variation in the weight of primal cuts. Biometric measurements can be used to accurately and precisely predict HCW, CCW and the weight of primal cuts from the carcass of Santa Inês sheep finished in tropical pastures, since the equations presented R2 and correlation coefficient and agreement above 0.8.
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Bautista-Díaz E, Mezo-Solis JA, Herrera-Camacho J, Cruz-Hernández A, Gomez-Vazquez A, Tedeschi LO, Lee-Rangel HA, Vargas-Bello-Pérez E, Chay-Canul AJ. Prediction of Carcass Traits of Hair Sheep Lambs Using Body Measurements. Animals (Basel) 2020; 10:ani10081276. [PMID: 32727056 PMCID: PMC7459708 DOI: 10.3390/ani10081276] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 07/17/2020] [Accepted: 07/22/2020] [Indexed: 11/16/2022] Open
Abstract
Simple Summary Some authors have reported that the use of body measurements (BMs) could be a useful tool for predicting carcass characteristics in sheep. Hair sheep breeds have been adopted for lamb production in the tropical regions of Latin America. Among these, Pelibuey and Katahdin breeds and their crosses have shown great reproductive capacity and adaptation, contributing to improving the productive efficiency of flocks in tropical production systems. However, few studies have been carried out on this breeds to define its BMs correctly, and little work has been found using BMs to predict the carcass characteristics in different physiological stages. Abstract The present study was designed to evaluate the relationship between the body measurements (BMs) and carcass characteristics of hair sheep lambs. Twenty hours before slaughter, the shrunk body weight (SBW) and BMs were recorded. The BMs involved were height at withers (HW), rib depth (RD), body diagonal length (BDL), body length (BL), pelvic girdle length (PGL), rump depth (RuD), rump height (RH), pin-bone width (PBW), hook-bone width (HBW), abdomen width (AW), girth (GC), and abdomen circumference (AC). After slaughter, the carcasses were weighed and chilled for 24 h at 1 °C, and then were split by the dorsal midline. The left-half was dissected into total soft tissues (muscle + fat; TST) and bone (BON), which were weighed separately. The weights of viscera and organs (VIS), internal fat (IF), and offals (OFF—skin, head, feet, tail, and blood) were also recorded. The equations obtained for predicting SBW, HCW, and CCW had an r2 ranging from 0.89 to 0.99, and those for predicting the TST and BON had an r2 ranging from 0.74 to 0.91, demonstrating satisfactory accuracy. Our results indicated that use of BMs could accurately and precisely be used as a useful tool for predicting carcass characteristics of hair sheep lambs.
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Affiliation(s)
- Emmanuel Bautista-Díaz
- División Académica de Ciencias Agropecuarias, Universidad Juárez Autónoma de Tabasco, Carretera Villahermosa-Teapa Km 25, Villahermosa 86280, Tabasco, Mexico; (E.B.-D.); (J.A.M.-S.); (A.C.-H.); (A.G.-V.)
| | - Jesús Alberto Mezo-Solis
- División Académica de Ciencias Agropecuarias, Universidad Juárez Autónoma de Tabasco, Carretera Villahermosa-Teapa Km 25, Villahermosa 86280, Tabasco, Mexico; (E.B.-D.); (J.A.M.-S.); (A.C.-H.); (A.G.-V.)
| | - José Herrera-Camacho
- Instituto de Investigaciones Agropecuarias y Forestales, Universidad Michoacana de San Nicolás de Hidalgo, Carretera Morelia-Zinapécuaro Km 9.5, El Trébol, Tarímbaro 58893, Michoacán, Mexico;
| | - Aldenamar Cruz-Hernández
- División Académica de Ciencias Agropecuarias, Universidad Juárez Autónoma de Tabasco, Carretera Villahermosa-Teapa Km 25, Villahermosa 86280, Tabasco, Mexico; (E.B.-D.); (J.A.M.-S.); (A.C.-H.); (A.G.-V.)
| | - Armando Gomez-Vazquez
- División Académica de Ciencias Agropecuarias, Universidad Juárez Autónoma de Tabasco, Carretera Villahermosa-Teapa Km 25, Villahermosa 86280, Tabasco, Mexico; (E.B.-D.); (J.A.M.-S.); (A.C.-H.); (A.G.-V.)
| | - Luis Orlindo Tedeschi
- Department of Animal Science, Texas A&M University, College Station, TX 77843-2471, USA;
| | - Héctor Aarón Lee-Rangel
- Facultad de Agronomía y Veterinaria, Universidad Autónoma de San Luis Potosí, San Luis Potosí 78000, S.L.P., Mexico;
| | - Einar Vargas-Bello-Pérez
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Grønnegårdsvej 3, DK-1870 Frederiksberg C, Denmark
- Correspondence: (E.V.-B.-P.); (A.J.C.-C.)
| | - Alfonso Juventino Chay-Canul
- División Académica de Ciencias Agropecuarias, Universidad Juárez Autónoma de Tabasco, Carretera Villahermosa-Teapa Km 25, Villahermosa 86280, Tabasco, Mexico; (E.B.-D.); (J.A.M.-S.); (A.C.-H.); (A.G.-V.)
- Correspondence: (E.V.-B.-P.); (A.J.C.-C.)
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Morales-Martinez MA, Arce-Recinos C, Mendoza-Taco MM, Luna-Palomera C, Ramirez-Bautista MA, Piñeiro-Vazquez ÁT, Vicente-Perez R, Tedeschi LO, Chay-Canul AJ. Developing equations for predicting internal body fat in Pelibuey sheep using ultrasound measurements. Small Rumin Res 2020. [DOI: 10.1016/j.smallrumres.2019.106031] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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