T.S. Brand , J.P. van der Westhuyzen , P.G. Theron , J.H.C. van Zyl
{"title":"Predicting fat deposition in growing Boer goat castrates and does using ultrasonography","authors":"T.S. Brand , J.P. van der Westhuyzen , P.G. Theron , J.H.C. van Zyl","doi":"10.1016/j.smallrumres.2024.107270","DOIUrl":null,"url":null,"abstract":"<div><p>Ultrasonography was used to determine the subcutaneous backfat deposition of Boer goat castrates and does from weaning until one year of age. Logarithmic regressions of subcutaneous backfat measurements were constructed using body weight and age as inputs. The logarithmic regression of subcutaneous backfat deposition with bodyweight had a moderate to good fit, with Boer goat does displaying a better fit (R<sup>2</sup>=0.70) than castrates (R<sup>2</sup>=0.65). The logarithmic regression of subcutaneous backfat with age indicated a good fit for both sexes (R<sup>2</sup>=0.85). Castrates and does displayed similar rates of subcutaneous backfat deposition. The models proposed here will enable producers to estimate the subcutaneous backfat depth of Boer goat castrates and does with reasonable accuracy and can be utilized as benchmarks in precision Boer goat rearing applications, such as predicting an appropriate slaughter weight.</p></div>","PeriodicalId":21758,"journal":{"name":"Small Ruminant Research","volume":null,"pages":null},"PeriodicalIF":1.6000,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0921448824000762/pdfft?md5=ed7b4fd526b86ee0d27243968cb3028b&pid=1-s2.0-S0921448824000762-main.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Small Ruminant Research","FirstCategoryId":"97","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0921448824000762","RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"AGRICULTURE, DAIRY & ANIMAL SCIENCE","Score":null,"Total":0}
引用次数: 0
Abstract
Ultrasonography was used to determine the subcutaneous backfat deposition of Boer goat castrates and does from weaning until one year of age. Logarithmic regressions of subcutaneous backfat measurements were constructed using body weight and age as inputs. The logarithmic regression of subcutaneous backfat deposition with bodyweight had a moderate to good fit, with Boer goat does displaying a better fit (R2=0.70) than castrates (R2=0.65). The logarithmic regression of subcutaneous backfat with age indicated a good fit for both sexes (R2=0.85). Castrates and does displayed similar rates of subcutaneous backfat deposition. The models proposed here will enable producers to estimate the subcutaneous backfat depth of Boer goat castrates and does with reasonable accuracy and can be utilized as benchmarks in precision Boer goat rearing applications, such as predicting an appropriate slaughter weight.
期刊介绍:
Small Ruminant Research publishes original, basic and applied research articles, technical notes, and review articles on research relating to goats, sheep, deer, the New World camelids llama, alpaca, vicuna and guanaco, and the Old World camels.
Topics covered include nutrition, physiology, anatomy, genetics, microbiology, ethology, product technology, socio-economics, management, sustainability and environment, veterinary medicine and husbandry engineering.