Widiyono Irkham, Yanuartono Yanuartono, Purnamaningsih Hary, Sarmin Sarmin
Department of Internal Medicine, Faculty of Veterinary Medicine, Universitas Gadjah Mada, Yogyakarta, Indonesia.
Department of Physiology, Faculty of Veterinary Medicine, Universitas Gadjah Mada, Yogyakarta, Indonesia.
J Anim Physiol Anim Nutr (Berl). 2023 Mar;107(2):453-462. doi: 10.1111/jpn.13753. Epub 2022 Jul 19.
This research aimed to investigate the effect of refeeding on production, blood biochemical parameters, and reproduction in underfed Kacang goat does. Twelve 2-3-year-old Kacang goats scored (body condition score [BCS]: 1-1.5) with poor body condition but appeared healthy, gave normal births 3-4 months before but no longer nursing their youngs, and anestrus were used in this study. The experiment consisted of 110 days with 14 days of adaptation period and 96 days of feeding treatment and data collection. After the adaptation period, the animals were divided into two groups (A and B), with six animals each. During the first 40 days (underfeeding period), they were fed with kangkong (Ipomoea reptans) straw at a level of 2% of body weight (BW). For the following 56 days (refeeding period), each animal in group A was fed at the level of 4% BW per day while group B was fed at the level of 5% BW per day consisting of 50% kangkong straw and 50% concentrate. Feed intake, average daily gain, body condition, and estrus were assessed in the period of underfeeding and refeeding. Blood samples were collected at the end of the underfeeding and refeeding period for blood biochemical parameter analyses. During the underfeeding period, the animals were anestrous and had poor body condition (BCS: 1.17-1.33) and high serum levels of cortisol, progesterone, and estradiol. Refeeding resulted in a significant increase in BCS (2.75-3.0), restoring estrous cycle, and reduced serum cortisol and progesterone level (p < 0.05). The Kacang goats had good compensatory growth. It could be concluded that refeeding at the level of 4-5% BW would restore undernourished goats' clinical condition, productivity, and reproductive performance after 8 weeks of refeeding.
本研究旨在调查补饲对营养不足的加桑山羊母羊生产性能、血液生化参数及繁殖性能的影响。选取12只2 - 3岁、体况评分（身体状况评分[BCS]：1 - 1.5）较差但看起来健康、在3 - 4个月前正常产仔且不再哺乳幼崽、处于乏情期的加桑山羊用于本研究。实验为期110天，包括14天的适应期以及96天的饲养处理和数据收集阶段。适应期过后，将动物分为两组（A组和B组），每组6只。在最初的40天（限饲期），给它们饲喂甘薯（蕹菜）秸秆，饲喂量为体重（BW）的2%。在接下来的56天（补饲期），A组的每只动物每天按体重的4%进行补饲，而B组每天按体重的5%进行补饲，补饲日粮由50%的甘薯秸秆和50%的精料组成。在限饲期和补饲期评估采食量、平均日增重、体况和发情情况。在限饲期和补饲期结束时采集血样用于血液生化参数分析。在限饲期，动物处于乏情期，体况较差（BCS：1.17 - 1.33），血清皮质醇、孕酮和雌二醇水平较高。补饲导致体况评分显著增加（2.75 - 3.0），恢复发情周期，并降低血清皮质醇和孕酮水平（p < 0.05）。加桑山羊具有良好的补偿生长能力。可以得出结论，在补饲8周后，按体重4 - 5%的水平进行补饲可恢复营养不良山羊的临床状况、生产性能和繁殖性能。
