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Tytuł pozycji:

Pre- and Post-Slaughter Methodologies to Estimate Body Fat Reserves in Lactating Saanen Goats

Tytuł:
Pre- and Post-Slaughter Methodologies to Estimate Body Fat Reserves in Lactating Saanen Goats
Autorzy:
Leonardo Sidney Knupp
Mondina Francesca Lunesu
Roberto Germano Costa
Mauro Ledda
Sheila Nogueira Ribeiro Knupp
Marco Acciaro
Mauro Decandia
Giovanni Molle
Ana Helena Dias Francesconi
Antonello Cannas
Temat:
body condition score
body measurements
fat depots
goats
prediction equation
ultrasound
Veterinary medicine
SF600-1100
Zoology
QL1-991
Źródło:
Animals, Vol 11, Iss 5, p 1440 (2021)
Wydawca:
MDPI AG, 2021.
Rok publikacji:
2021
Kolekcja:
LCC:Veterinary medicine
LCC:Zoology
Typ dokumentu:
article
Opis pliku:
electronic resource
Język:
English
ISSN:
2076-2615
Relacje:
https://www.mdpi.com/2076-2615/11/5/1440; https://doaj.org/toc/2076-2615
DOI:
10.3390/ani11051440
Dostęp URL:
https://doaj.org/article/07b211243c0f46a4b1704fea3d2e307e  Link otwiera się w nowym oknie
Numer akcesji:
edsdoj.07b211243c0f46a4b1704fea3d2e307e
Czasopismo naukowe
This work aimed to compare pre- and post-slaughter methodologies to estimate body fat reserves in dairy goats. Twenty-six lactating Saanen goats ranging from 43.6 to 69.4 kg of body weight (BW) and from 1.84 to 2.96 of body condition score (BCS; 0–5 range) were used. Fifteen pre-slaughter and four post-slaughter measurement values were used to estimate the weight of fat in the omental (OM), mesenteric (MES), perirenal (PR), organ (ORG), carcass (CARC), and non-carcass components (NC) and total (TOT, calculated as the sum of CARC and NC) depots in goats. The pre-slaughter measurements were withers height; rump height; rump length; pelvis width; chest depth; shoulder width; heart girth; body length; sternum height; BW; BCS assessed in the lumbar (BCSl) and sternal (BCSs) regions; and fat thickness measured by ultrasound in the lumbar (FTUSl), sternal (FTUSs), and perirenal (FTUSpr) regions. The post-slaughter measurements were hot carcass weight (HCW), empty body weight (EBW), and fat thickness measured by digital caliper in the lumbar (FTDCl) and sternal (FTDCs) regions. Linear and multiple regressions were fit to data collected. BW, BCS (from lumbar and sternal regions), all somatic measurements, and fat thickness measured by ultrasound in the lumbar and sternal regions were not adequate to estimate the weight of total fat in lactating Saanen goats (R2 ≤ 0.55). The best pre-slaughter and post-slaughter estimators of OM, MES, PR, ORG, NC, and TOT fat were FTUSpr and EBW, respectively. Among pre- and post-slaughter measurements, BCSl (R2 = 0.63) and HCW (R2 = 0.82) provided the most accurate predictions of CARC fat, respectively. Multiple regression using the pre-slaughter variables FTUSpr, BW, and BCSl yielded estimates of TOT fat with an R2 = 0.92 (RSD = 1.14 kg). On the other hand, TOT fat predicted using the post-slaughter variables HCW and FTDCs had an R2 = 0.83 (RSD = 1.41 kg). These results confirm that fat reserves can be predicted in lactating Saanen goats with high precision using multiple regression equations combining in vivo measurements.

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