大熊猫幼崽生长曲线及生长速率遗传力的估计

Estimation of the growth curve and heritability of the growth rate for giant panda (Ailuropoda melanoleuca) cubs.

作者信息

Che T D, Wang C D, Jin L, Wei M, Wu K, Zhang Y H, Zhang H M, Li D S

机构信息

Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University, Ya'an, Sichuan, China.

China Conservation and Research Center for the Giant Panda, Wolong, Sichuan, China.

出版信息

Genet Mol Res. 2015 Mar 27;14(1):2322-30. doi: 10.4238/2015.March.27.17.

DOI:10.4238/2015.March.27.17

PMID:25867378

Abstract

Giant panda cubs have a low survival rate during the newborn and early growth stages. However, the growth and developmental parameters of giant panda cubs during the early lactation stage (from birth to 6 months) are not well known. We examined the growth and development of giant panda cubs by the Chapman growth curve model and estimated the heritability of the maximum growth rate at the early lactation stage. We found that 83 giant panda cubs reached their maximum growth rate at approximately 75-120 days after birth. The body weight of cubs at 75 days was 4285.99 g. Furthermore, we estimated that the heritability of the maximum growth rate was moderate (h(2) = 0.38). Our study describes the growth and development of giant panda cubs at the early lactation stage and provides valuable growth benchmarks. We anticipate that our results will be a starting point for more detailed research on increasing the survival rate of giant panda cubs. Feeding programs for giant panda cubs need further improvement.

摘要

大熊猫幼崽在新生期和早期生长阶段的存活率较低。然而，大熊猫幼崽在哺乳早期阶段（从出生到6个月）的生长和发育参数尚不清楚。我们通过查普曼生长曲线模型研究了大熊猫幼崽的生长发育情况，并估计了哺乳早期阶段最大生长速率的遗传力。我们发现，83只大熊猫幼崽在出生后约75 - 120天达到最大生长速率。75日龄幼崽的体重为4285.99克。此外，我们估计最大生长速率的遗传力为中等（h(2) = 0.38）。我们的研究描述了大熊猫幼崽在哺乳早期阶段的生长发育情况，并提供了有价值的生长基准。我们预计，我们的研究结果将成为进一步详细研究提高大熊猫幼崽存活率的起点。大熊猫幼崽的饲养方案需要进一步改进。