Associations of feed efficiency with circulating IGF-1 and leptin, carcass traits and meat quality of lambs

Montelli, N.L.L.L.; Alvarenga, Tharcilla I.R.C.; Almeida, A. K.; Alvarenga, Flavio A. P.; Garcia, Iraídes Ferreira Furusho; Greenwood, P. L.; Pereira, Idalmo Garcia

doi:10.1016/j.meatsci.2020.108379

Cited by 12 publications

(8 citation statements)

References 51 publications

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“…In this study, pH 1 of high-RFI ducks was slightly lower than that of low-RFI and high-RFI ducks ( P > 0.05), low-RIG ducks had lower pH 1 compared to medium- and high-RIG ducks ( P < 0.05), and no significant difference was observed between medium-RIG and high-RIG ducks ( P > 0.05). The value of pH 1 was negatively associated with RFI ( r = −0.240, P < 0.05) and positively associated with RIG ( r = 0.270, P < 0.05) which is in agreement with results in Korat chickens ( Poompramun et al, 2022 ) as well as high-, medium-, and low-RFI Dorper × Santa Inês male lambs ( Montelli et al, 2020 ). Further, a higher growth rate was positively correlated with the pH of breast meat.…”

Section: Resultssupporting

confidence: 87%

Growth performance, carcass traits, meat quality, and blood variables of small-sized meat ducks with different feed efficiency phenotypes

Yang

Dong

et al. 2023

Poultry Science

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Section: Resultssupporting

confidence: 87%

Growth performance, carcass traits, meat quality, and blood variables of small-sized meat ducks with different feed efficiency phenotypes

Yang

Dong

et al. 2023

Poultry Science

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“…There were no differences in the pH of the biceps femoris between the different CP levels of the concentrate feeds in this study. Other studies (Giráldez et al, 2021;Montelli et al, 2021) reported a similar pH behavior in sheep meat. These results also match the findings of Gomes et al (2012) and Fidelis et al (2017), who reported a similar pH in Nellore livestock, 24 h after they were slaughtered.…”

Section: Resultssupporting

confidence: 66%

“…Therefore, they have more energy available for production -i.e., the animals with high residual gain use less energy in their physiological support processes-and, consequently, they have more energy available for the deposition of tissues (Gomes et al, 2012). In addition, Montelli et al (2021) and Nascimento et al (2020) reported that lambs with high residual weight gain use food more efficiently. This phenomenon could be associated with lower rumination rates.…”

Section: Resultsmentioning

confidence: 99%

Production and quality of meat from hair sheep grazing on Tanzania grass and supplemented with different protein levels

Hernández-Canul,

Cruz-Hernández,

Gómez-Vázquez

et al. 2024

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Objective: To evaluate the effect of a supplementary feeding (with different crude protein (CP) levels) in the yield and growth performance and meat characteristics of hair lambs grazed on Tanzania grass. Design/Methodology/Approach: A 120-d-1 experiment was conducted; it included four treatments and seven replications in a completely randomized design. Twenty-eight hair lambs (22.6 ± 1.6 kg LW) were allowed to graze on Tanzania grass (Panicum maximum) and were provided concentrate feeds (with 10, 12, 14, and 16% crude protein). The aim was to assess the effects of the latter food on growth, carcass characteristics, and meat quality. Results: Compared with the lambs fed with 10, 12, and 14% CP, the heaviest carcasses (P<0.05) were obtained from lambs fed with 16% CP. The percentage of crude protein and fat of the biceps femoris linearly increased (P<0.05) as the CP percentage increased in the concentrate feed. Meat color, water retention capacity, and cutting force were not impacted by the CP percentage of the concentrate feeds. Compared with the lambs fed with 10, 12, and 14%, the lowest palmitic acid percentage and the highest oleic acid percentage were found in the meat of lambs fed with 16% CP. Study Limitations/Implications: A high area was selected to avoid excessive rain. Findings/Conclusions: Compared with the lambs fed with 10, 12, and 14% CP, the lambs grazed on Tanzania grass and supplemented with 16% CP grew more, recorded a higher carcass yield, and their meat had a better unsaturated fatty acids ratio.

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“…Also, the current study results are consistent with previous studies reporting results for IGF-1 concentrations (Roberts et al, 1990) as days of the experiment, age and size of lambs increased the concentrations of IGF-1. These findings most probably relate to increasing muscle mass (Montelli et al, 2021). Besides, the determination of plasma IGF-I concentration in growing lambs may provide a physiological explanation of growth features (Medrano and Bradford, 1991;Gatford et al, 1996Gatford et al, , 1997Whisnant et al, 1997) In these studies, the increase of leptin concentration after weaning and during the fattening period could have been due to the rise in the live weight and subsequently increase adipose cells volume (Tokuda et al, 2001).…”

Section: Testosterone Concentrationsmentioning

confidence: 99%

Associations between age at puberty, growth traits, plasma IGF-I and leptin concentrations with reproductive performance of Rahmani and Barki male Lambs

Mansour

2021

Egyptian Journal of Sheep and Goats Sciences

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The present study aimed to investigate the effect of breed type and puberty status on growth performance, blood IGF-I, leptin concentrations, and the subsequent reproductive performance of Rahmani and Barki male lambs. After weaning at week 14th, two equal groups of Rahmani and Barki male lambs (n = 20 each) were used in the present study till 40 week of age. All lambs followed to tracking the growth traits and puberty development. Blood samples were collected from each lamb every two weeks for IGF-I, leptin, and testosterone examination. Results indicated that Rahmani and Barki lambs had a similar value of growth traits during the experimental period. Also, the average of age at puberty was (37.48 weeks) in Rahmani lambs without significant differences with Barki lambs (36.72 weeks). Besides, the concentration of plasma IGF-I in Barki lambs was higher (P < 0.05) than Rahmani lambs starting from week 26 onwards. However, the concentration of plasma leptin in Rahmani lambs was higher (P < 0.05) than Barki lambs starting from week 28 onwards. Thus, there was a linear increase in plasma testosterone levels during the pre-pubertal up to puberty stage without any significant differences between both breeds. Also, values of semen quality and quantity recorded for lambs of both breeds were almost comparable. Accordingly, the current study results suggest that body mass represented by muscle and fat accumulation were equal for both breeds. These might modify the circulating of IGF-1, and leptin, respectively, exerting an equally positive influence on the reproductive performance of Rahmani and Barki lambs at puberty.

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Associations of feed efficiency with circulating IGF-1 and leptin, carcass traits and meat quality of lambs

Cited by 12 publications

References 51 publications

Growth performance, carcass traits, meat quality, and blood variables of small-sized meat ducks with different feed efficiency phenotypes

Growth performance, carcass traits, meat quality, and blood variables of small-sized meat ducks with different feed efficiency phenotypes

Production and quality of meat from hair sheep grazing on Tanzania grass and supplemented with different protein levels

Associations between age at puberty, growth traits, plasma IGF-I and leptin concentrations with reproductive performance of Rahmani and Barki male Lambs

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