Allometric Growth of Non-Carcass Components, Carcass Cuts and Hind Limb Tissues in Kivircik Lambs Finished Under Concentrate- and Pasture-Based Systems.

IF 1.8 3区农林科学 Q2 VETERINARY SCIENCES

Veterinary Medicine and Science Pub Date : 2025-01-01 DOI:10.1002/vms3.70187

Hulya Yalcintan, Pembe Dilara Kecici, Bulent Ekiz

{"title":"Allometric Growth of Non-Carcass Components, Carcass Cuts and Hind Limb Tissues in Kivircik Lambs Finished Under Concentrate- and Pasture-Based Systems.","authors":"Hulya Yalcintan, Pembe Dilara Kecici, Bulent Ekiz","doi":"10.1002/vms3.70187","DOIUrl":null,"url":null,"abstract":"Background: Obtaining information about the growth rates of animals' organs and tissues can help understand their meat production potential and determine the ideal slaughter weight (SW).Objectives: This study aimed to determine the effects of production system and SW on the allometric growth of the non-carcass components, carcass cuts, and hind limb tissues of Kivircik lambs.Methods: A total of 54 single-born male lambs were randomly allocated into production systems (concentrate- and pasture-based) and SW groups: 25-26 kg (LOW), 30-31 kg (MEDIUM), and 35-36 kg (HIGH). The data for weights of non-carcass components, carcass cuts and hind limb tissues were analysed using General Linear Model (GLM). The allometric growth of non-carcass components, carcass cuts and hind limb tissues was estimated using the nonlinear allometric equation (Y = aXb).Results: The mean of carcass components increased linearly with SW (p < 0.05). Similar omental-mesenteric fat, kidney knob and channel fat (KKCF), back fat thickness, subcutaneous fat, intermuscular fat and total fat levels were observed in the different SW groups in a pasture-based system (p > 0.05). Carcass cuts and hind limb fat tissues show late development (b > 1) in the concentrated system. Development of subcutaneous fat and total fat was late maturing (b > 1) in the pasture-based system. Allometric growth of KKCF, subcutaneous fat and total fat was rapid.Conclusion: If more carcass weight is desired from Kivircik lambs in the concentrated production system, they should be slaughtered at higher weights than the HIGH group. Continuing to fatten pasture-based lambs after 30-31 kg may result in fatty carcasses.","PeriodicalId":23543,"journal":{"name":"Veterinary Medicine and Science","volume":"11 1","pages":"e70187"},"PeriodicalIF":1.8000,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11727573/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Veterinary Medicine and Science","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.1002/vms3.70187","RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"VETERINARY SCIENCES","Score":null,"Total":0}

引用次数: 0

Abstract

Background: Obtaining information about the growth rates of animals' organs and tissues can help understand their meat production potential and determine the ideal slaughter weight (SW).

Objectives: This study aimed to determine the effects of production system and SW on the allometric growth of the non-carcass components, carcass cuts, and hind limb tissues of Kivircik lambs.

Methods: A total of 54 single-born male lambs were randomly allocated into production systems (concentrate- and pasture-based) and SW groups: 25-26 kg (LOW), 30-31 kg (MEDIUM), and 35-36 kg (HIGH). The data for weights of non-carcass components, carcass cuts and hind limb tissues were analysed using General Linear Model (GLM). The allometric growth of non-carcass components, carcass cuts and hind limb tissues was estimated using the nonlinear allometric equation (Y = aX^b).

Results: The mean of carcass components increased linearly with SW (p < 0.05). Similar omental-mesenteric fat, kidney knob and channel fat (KKCF), back fat thickness, subcutaneous fat, intermuscular fat and total fat levels were observed in the different SW groups in a pasture-based system (p > 0.05). Carcass cuts and hind limb fat tissues show late development (b > 1) in the concentrated system. Development of subcutaneous fat and total fat was late maturing (b > 1) in the pasture-based system. Allometric growth of KKCF, subcutaneous fat and total fat was rapid.

Conclusion: If more carcass weight is desired from Kivircik lambs in the concentrated production system, they should be slaughtered at higher weights than the HIGH group. Continuing to fatten pasture-based lambs after 30-31 kg may result in fatty carcasses.

查看原文本刊更多论文

精料和放牧条件下基维西克羔羊非胴体成分、胴体切口和后肢组织的异速生长

背景：获得动物器官和组织生长速率的信息有助于了解其肉类生产潜力，并确定理想屠宰重（SW）。目的：本研究旨在确定生产系统和SW对Kivircik羔羊非胴体成分、胴体切口和后肢组织异速生长的影响。方法：将54只单胎公羔羊随机分为生产系统（精料和放牧）和SW组，分别为25-26 kg （LOW）、30-31 kg （MEDIUM）和35-36 kg （HIGH）。采用一般线性模型（General Linear Model， GLM）对非胴体成分、胴体切口和后肢组织的重量数据进行分析。采用非线性异速生长方程（Y = aXb）估计非胴体成分、胴体切口和后肢组织的异速生长。结果：胴体各组成部分的平均值随SW的增加呈线性增加（p < 0.05）。在浓缩系统中，胴体切口和后肢脂肪组织发育较晚（b>1）。在以牧草为基础的系统中，皮下脂肪和总脂肪的发育较晚（b >1）。KKCF、皮下脂肪和总脂肪异速生长迅速。结论：在集中生产系统中，如果希望获得更高的胴体重，则应采用高于HIGH组的屠宰。在30-31公斤后继续对放牧羔羊增肥可能会导致肥壮的胴体。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Veterinary Medicine and Science Veterinary-General Veterinary

CiteScore

3.00

自引率

0.00%

发文量

296

期刊介绍： Veterinary Medicine and Science is the peer-reviewed journal for rapid dissemination of research in all areas of veterinary medicine and science. The journal aims to serve the research community by providing a vehicle for authors wishing to publish interesting and high quality work in both fundamental and clinical veterinary medicine and science. Veterinary Medicine and Science publishes original research articles, systematic reviews, meta-analyses, and research methods papers, along with invited editorials and commentaries. Original research papers must report well-conducted research with conclusions supported by the data presented in the paper. We aim to be a truly global forum for high-quality research in veterinary medicine and science, and believe that the best research should be published and made widely accessible as quickly as possible. Veterinary Medicine and Science publishes papers submitted directly to the journal and those referred from a select group of prestigious journals published by Wiley-Blackwell. Veterinary Medicine and Science is a Wiley Open Access journal, one of a new series of peer-reviewed titles publishing quality research with speed and efficiency. For further information visit the Wiley Open Access website.