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Open AccessArticle

Effects of Maternal Undernutrition during Mid-Gestation on the Yield, Quality and Composition of Kid Meat Under an Extensive Management System

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CAS Key Laboratory for Agro-Ecological Processes in Subtropical Region, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, South-Central Experimental Station of Animal Nutrition and Feed Science in Ministry of Agriculture, Institute of Subtropical Agriculture, The Chinese Academy of Sciences, Changsha 410125, China
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University of The Chinese Academy of Science, Beijing 100049, China
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College of Animal Science, Tarim University, Alaer 843300, China
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Hunan Co-Innovation Center for Utilization of Botanical Functional Ingredients, Changsha 410128, China
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Hunan Co-Innovation Center of Animal Production Safety, Changsha 410128, China
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Department of Animal Science Faculty of Agriculture, University of Benin, Benin P.M.B.1154, Nigeria
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Authors to whom correspondence should be addressed.
Animals 2019, 9(4), 173; https://doi.org/10.3390/ani9040173
Received: 8 January 2019 / Revised: 23 March 2019 / Accepted: 16 April 2019 / Published: 17 April 2019
(This article belongs to the Special Issue Reproductive Management of Sheep and Goats)
Nutrition status during pregnancy affects the meat production of offspring. In ruminants, the nutrient supply during the first and third periods of gestation is generally stressed, whereas the nutrition level during the second period of gestation is given less attention, in particular under the extensive husbandry system. This study focused on the effects of a 40% maternal undernutrition during mid-gestation, on the yield, quality, and composition of kid meat under an extensive system. The meat yield of the kids was decreased, while the meat quality and chemical composition, including the amino acid and fatty acid profiles, were unaffected. In meat production under an extensive husbandry system, the importance of the nutrient supply during mid-gestation in ruminants should be stressed.
Nutritional status during mid-gestation is often ignored under extensive husbandry. This study aimed to examine the effect of maternal undernutrition during mid-gestation on kid meat production under an extensive system. Twenty-seven goats (45 ± 3 d of gestation) were randomly assigned to an unrestricted group (100% of nutrient requirements), or a restricted group (60% of nutrient requirements from 45 to 100 d of gestation, and then re-alimented to 100%). Among the offspring, 16 eligible kids (eight per treatment) were selected, based on birth type and survival, and were harvested to evaluate the meat yield, quality, and composition at 90 d after birth. Maternal undernutrition reduced the body weight and size, average daily gain and hot carcass weight of the kids (p < 0.05). The lightness of the meat at 45 min postmortem was increased (p = 0.029) in the restricted kids. Apart from an increase in tyrosine concentration (p = 0.046), the proximate composition and the amino acid and fatty acid profiles were unaffected in the restricted kids (p > 0.05). Overall, maternal undernutrition during mid-gestation decreased the yield of kid meat, but did not significantly modify the quality and composition. These results highlight the importance of nutrient status during mid-gestation in the meat production of small ruminants under an extensive regime. View Full-Text
Keywords: maternal undernutrition; kid meat production; meat quality; fatty acid; amino acid maternal undernutrition; kid meat production; meat quality; fatty acid; amino acid
MDPI and ACS Style

Zhou, X.; Yan, Q.; Yang, H.; Ren, A.; Kong, Z.; Tang, S.; Han, X.; He, Z.; Bamikole, M.A.; Tan, Z. Effects of Maternal Undernutrition during Mid-Gestation on the Yield, Quality and Composition of Kid Meat Under an Extensive Management System. Animals 2019, 9, 173.

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