Park Myung Sun, Shokrollahi Borhan, Kim Ui Hyung, Won Jeong Il, Cho Soo-Hyun, Jin Shil, Kang Sung Sik, Moon Sung Jin, Um Kyung-Hwan, Jang Ki Suk, Kim Hyoun Ju, Kim Nam Young, Kim Sung Woo, Jang Sun Sik, Lee Hyun-Jeong
Hanwoo Research Institute, National Institute of Animal Science, Pyeongchang, Republic of Korea.
Department of Animal Science, Sanandaj Branch, Islamic Azad University, Sanandaj, Kurdistan, Iran.
Front Vet Sci. 2023 Nov 16;10:1287119. doi: 10.3389/fvets.2023.1287119. eCollection 2023.
This study aimed to evaluate the implications of supplementary nutrition during the mid-to-late pregnancy on various parameters in Hanwoo cows and their subsequent neonatal calves.
Eight Hanwoo cows in their first parity were divided into two groups. The control group (C, 100%) received 3kg of concentrate and 5kg of rice straw throughout the pregnancy period, while the treatment group (T, 150%) increased their diet during mid-to-late pregnancy. Both performance assessments and blood metabolite analyses were performed for the pregnant cows. Neonatal calves were subjected to morphometric evaluations, blood sampling, and detailed morphometric analyses of carcasses and gastrointestinal components.
Performance indices of the cows showed that both Pregnancy Period (PregP) and Body Condition Score (BCS) were significantly improved with supplemental feeding ( <0.05). Improvements in Body Weight (BW) and Feed Conversion Ratio (FCR) were not statistically significant. Blood metabolite analysis for the cows revealed decreased levels of triglycerides (TGLate), non-esterified fatty acids (NEFALate), and progesterone (P4Late), with a notable increase in glucose (GluLate) levels ( <0.01). In the neonatal calves, anatomical metrics of the gastrointestinal tissues showed increased Omasum Width (OmasWdth) values in the supplemented group ( =0.053). There was significant increase of papillae and villus lengths in the rumen and small intestine ( <0.01 and <0.05, respectively). Morphometric evaluations displayed longer body lengths (BLnth) and larger chest width (ChestWdth) in the treated calves ( <0.05 and <0.01, respectively). Carcass characteristics showed no substantial variations between the groups, while blood analysis in the calves revealed decreased GPT levels in the nutritionally supplemented group (<0.05).
The findings indicate that supplementing the diets of Hanwoo cows during mid-to-late pregnancy leads to significant changes in select maternal blood metabolites and influences specific anatomical and morphometric features in neonatal calves, all without significant shifts in carcass attributes.
本研究旨在评估妊娠中后期补充营养对韩牛及其新生犊牛各项参数的影响。
将8头初产韩牛分为两组。对照组（C，100%）在整个妊娠期饲喂3千克精饲料和5千克稻草，而治疗组（T，150%）在妊娠中后期增加日粮。对妊娠母牛进行性能评估和血液代谢物分析。对新生犊牛进行形态测量评估、采血，并对胴体和胃肠道成分进行详细的形态测量分析。
母牛的性能指标显示，补充饲喂后妊娠期（PregP）和体况评分（BCS）均显著改善（<0.05）。体重（BW）和饲料转化率（FCR）的改善无统计学意义。母牛的血液代谢物分析显示甘油三酯（TGLate）、非酯化脂肪酸（NEFALate）和孕酮（P4Late）水平降低，葡萄糖（GluLate）水平显著升高（<0.01）。在新生犊牛中，补充组胃肠道组织的瘤胃宽度（OmasWdth）值增加（=0.053）。瘤胃和小肠中乳头和绒毛长度显著增加（分别为<0.01和<0.05）。形态测量评估显示，治疗组犊牛的体长（BLnth）更长，胸宽（ChestWdth）更大（分别为<0.05和<0.01）。胴体特征在两组之间无显著差异，而犊牛的血液分析显示营养补充组的GPT水平降低（<0.05）。
研究结果表明，妊娠中后期补充韩牛日粮会导致母体血液中某些代谢物发生显著变化，并影响新生犊牛的特定解剖和形态特征，而胴体属性无显著变化。
