Effects of feeding strategies during lactation and the inclusion of quebracho in the fattening on performance and carcass traits in light lambs

Lobón, S.; Alibés, Mireia Blanco; Sanz, A.; Ripoll, G.; Joy, M.

doi:10.1002/jsfa.9207

Cited by 8 publications

(9 citation statements)

References 27 publications

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“…Then, the effects might be greatly dependent on the source of CT. In the present study, the lower α-tocopherol concentration at slaughter in the plasma of lambs fed the quebracho concentrate because the content of α-tocopherol was greater in aforementioned concentrate and moreover, its intake was also higher than that of the control concentrate [ 18 ]. In cows, it has been shown that 1% grape seed and grape marc meal extract, containing CT, increased the retinol concentration in the plasma but did not affect the β-carotene and α-tocopherol content in the plasma of lactating cows [ 41 ].…”

Section: Discussionmentioning

confidence: 99%

“…Other studies correctly classified 100% of the carcass into their feeding system using the absolute valor of the integral of the translated spectra as estimators of carotenoids of perirenal fat [ 39 , 48 ]. Nevertheless, the discrimination of the lambs in the present study using subcutaneous and perirenal fat color parameters showed lower accuracy than using the content of retinol and tocopherols in both fat deposits because the finishing period on concentrates interfered [ 18 ]. Another possibility for tracing the maternal feeding could be the use of fatty acids of the meat, which allowed an 82–100% accuracy in the discrimination among suckling lambs whose dams were fed hay or fresh pasture supplemented with concentrates with or without quebracho [ 49 ].…”

Section: Discussionmentioning

confidence: 99%

“…The present study is part of a broader study that has been described in detail in Lobón, et al [ 18 ]. Briefly, 63 single-bearing Rasa Aragonesa ewes and their male lambs were used in the experiment.…”

Section: Methodsmentioning

confidence: 99%

“…The lambs received the concentrate and straw ad libitum during 28 (±1.3) days until they reached the target slaughter BW (23 ± 0.1 kg). The total concentrate intake during this period was 22.3 and 23.4 kg dry matter (DM) for the control concentrate and the quebracho concentrate, respectively [ 18 ]. Water and mineral blocks were always offered ad libitum.…”

Section: Methodsmentioning

confidence: 99%

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Carotenoids and Liposoluble Vitamins in the Plasma and Tissues of Light Lambs Given Different Maternal Feedings and Fattening Concentrates

Rufino‐Moya

Joy

Lobón

et al. 2020

Animals

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The carotenoids and liposoluble vitamins in the plasma and tissues of the lambs under different maternal feedings and fattening concentrates was studied. During lactation, 21 lambs were housed with their dams, that received a total mixed ration (intensive); 21 ewe–lamb pairs grazed on alfalfa; and 21 pairs grazed on sainfoin. After weaning, half of the lambs in each maternal feeding group received a commercial concentrate (control) and the other half a concentrate with quebracho (Schinopsis balansae), as a source of condensed tannins, until they were slaughtered (23 kg). The analyte concentrations in the plasma of lambs at weaning reflected the content in the feedstuffs. Grazing during suckling more than doubled the contents of lutein in the liver and retinol in the tissues compared to the intensive feeding. The content of α-tocopherol in the tissues was greatest in sainfoin lambs, intermediate in alfalfa lambs, and lowest in the intensive lambs. The quebracho concentrate decreased α-tocopherol (by 41–81%) and γ-tocopherol (by 65–89%) contents in the lamb tissues. The use of the analytes in the plasma at weaning correctly classified 100% of the lambs into the maternal feeding (intensive vs. grazing (alfalfa + sainfoin)) but has to be improved in the carcass and tissues separately.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Carotenoids and Liposoluble Vitamins in the Plasma and Tissues of Light Lambs Given Different Maternal Feedings and Fattening Concentrates

Rufino‐Moya

Joy

Lobón

et al. 2020

Animals

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“…The silt loam soil at the site had pH 8.1 and 1.81% organic matter and contained 16% clay, 53.5% silt, and 30.5% sand. Alfalfa and sainfoin were cultivated and managed as described by Lobón et al [15]. Samples of forage were collected fortnightly from 14 April to 22 September 2015.…”

Section: Methodsmentioning

confidence: 99%

Methane Production of Fresh Sainfoin, with or without PEG, and Fresh Alfalfa at Different Stages of Maturity is Similar but the Fermentation End Products Vary

Rufino‐Moya

Alibés

Bertolín

et al. 2019

Animals

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Alfalfa and sainfoin are high-quality forages with different condensed tannins (CT) content, which can be affected by the stage of maturity. To study the effects of CT on fermentation parameters, three substrates (alfalfa, sainfoin, and sainfoin+PEG) at three stages of maturity were in vitro incubated for 72 h. Sainfoin had greater total polyphenol and CT contents than alfalfa. As maturity advanced, CT contents in sainfoin decreased (p < 0.05), except for the protein-bound CT fraction (p > 0.05). The total gas and methane production was affected neither by the substrate nor by the stage of maturity (p > 0.05). Overall, sainfoin and sainfoin+PEG had greater in vitro organic matter degradability (IVOMD) than alfalfa (p < 0.05). Alfalfa and sainfoin+PEG presented higher ammonia content than sainfoin (p < 0.001). Total volatile fatty acid (VFA) production was only affected by the stage of maturity (p < 0.05), and the individual VFA proportions were affected by the substrate and the stage of maturity (p < 0.001). In conclusion, alfalfa and sainfoin only differed in the IVOMD and the fermentation end products. Moreover, CT reduced ammonia production and the ratio methane: VFA, but the IVOMD was reduced only in the vegetative stage.

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The effect of the inclusion of pea in lamb fattening concentrate on in vitro and in situ rumen fermentation

et al. 2020

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BACKGROUND The objective of this study was to evaluate the effect of the proportion of pea (0%, 10%, 20%, and 30%), as a partial replacement for soybean meal (SBM) in the fattening concentrate, on ruminal fermentation in lambs. Gas and methane (CH4) production, in vitro dry matter degradability (IVDMD), ammonia (NH3‐N), and volatile fatty acid (VFA) production after 24 h of incubation were evaluated. The concentrates were also incubated in the rumen of the wethers for 2, 4, 6, 8, 12, and 24 h to evaluate the effects of pea inclusion on in situ dry matter degradability (DMD), organic matter degradability (OMD), nitrogen degradability (ND), NH3‐N, and VFA production. RESULTS In the in vitro assay, the inclusion of pea only affected gas production (mL day−1 degraded dry matter), CH4 production (mL day−1 degraded dry matter), and IVDMD (P < 0.05), and tended to affect NH3‐N content (P < 0.10) without affecting VFA production. In the in situ assay, the inclusion of pea increased DMD, OMD, and ND linearly (P < 0.001), whereas pea inclusion decreased NH3‐N content linearly (P < 0.05). Neither total VFA production nor the proportion of acetic acid were affected by pea inclusion (P > 0.05), but the propionic proportion increased with the proportion of pea included. CONCLUSIONS The best level of pea inclusion in the concentrate could not be established based on the results of this study. However, the results showed that the inclusion of pea provides a good alternative protein source. © 2020 Society of Chemical Industry

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Effects of feeding strategies during lactation and the inclusion of quebracho in the fattening on performance and carcass traits in light lambs

Abstract: The feeding strategies during lactation had an effect on the carcass characteristics, highlighting the importance of the dam's diet during this period. The inclusion of quebracho in the lamb's concentrate had minor effects. © 2018 Society of Chemical Industry.

Cited by 8 publications

References 27 publications

Carotenoids and Liposoluble Vitamins in the Plasma and Tissues of Light Lambs Given Different Maternal Feedings and Fattening Concentrates

Carotenoids and Liposoluble Vitamins in the Plasma and Tissues of Light Lambs Given Different Maternal Feedings and Fattening Concentrates

Methane Production of Fresh Sainfoin, with or without PEG, and Fresh Alfalfa at Different Stages of Maturity is Similar but the Fermentation End Products Vary

The effect of the inclusion of pea in lamb fattening concentrate on in vitro and in situ rumen fermentation

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