Carcass Composition, Meat Quality, Calpain Activity, Fatty Acid Composition and Ribonucleotide Content in Southern Thai Native Goats and Three-Way Crossbred Goats.

Chanporn Chaosap,Chatchai Sriprem,Ratchasak Chauychuwong,Awis Qurni Sazili,Nantana Chauychuwong,Panneepa Sivapirunthep

doi:10.3390/foods10061323

Abstract

Carcass composition, meat quality, calpain activity, fatty acid composition, and ribonucleotide content were examined and compared between male Southern Thai native goats (NG, n = 10) and three-way crossbred goats (CG, 50% Boer × 25% Saanen × 25% Southern Thai native, n = 10). All animals were fed 1.5% body weight of concentrate (16% protein and 70% total digestible nutrients) and fresh Napier grass for 4 months. At the end of raising period, the final weight between the two genotypes was not significantly different. The percentage of carcass, bone, and fat of CG were higher than those of NG. NG presented lower shear force values, insoluble and total collagen content but higher collagen solubility and calpain-1 activity at 24 h postmortem. Additionally, NG meat was high in monounsaturated fatty acids but low in saturated fatty acids. However, the amount of ribonucleotide was no significant difference between two genotypes.

Highlights

The objectives of this study were to determine and compare carcass composition, meat quality, collagen content, calpain activity, fatty acid composition, and ribonucleotide content between meat obtained from Southern Thai native goats (NG) and three-way crossbred goats (CG) raised under intensive production system
Twenty male goats were selected based on similar initial weight, and the selection was done for Southern Thai native goats (NG, n = 10) and three-way crossbred goats
CG had higher carcass dressing percentage (p < 0.05), and this could be explained by a tendency for them to present heavier carcass weight (p = 0.072)

Summary

Introduction

The demand for goat meat remarkably increased in Asia and Africa [2] and is potentially growing in other geographical regions. Most of the goats are owned by smallholder farmers and raised in the southern region of Thailand. Due to the increase in demand, the number of goats raised primarily for meat production grown by 13.67% in 2019 compared to that in 2018 [3]. The traditional goat production system in Thailand is an extensive grazing system [4]. As the traditional system is insufficient to respond effectively for the growing demand, there is a need for an effectively intensive production system. The improvement of growth performance and feed efficiency in the intensive goat production system is a result of a supplement of concentrates together with using improved meat breeds [5]

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Discussion

Conclusion