搜索结果: 46-60 共查到“知识库 动物生长发育学”相关记录444条 . 查询时间(0.459 秒)
Effects of Xylanase Supplementation on Growth Performance, Nutrient Digestibility and Non-starch Polysaccharide Degradation in Different Sections of the Gastrointestinal Tract of Broilers Fed Wheat-based Diets
Xylanase Broiler Performance Digestibility Non-starch Polysaccharide Degradation
2016/5/16
This experiment was performed to investigate the effects of exogenous xylanase supplementation on performance, nutrient digestibility and the degradation of non-starch polysaccharides (NSP) in differe...
Effects of Black Pepper (Piper Nigrum), Turmeric Powder (Curcuma Longa) and Coriander Seeds (Coriandrum Sativum) and Their Combinations as Feed Additives on Growth Performance, Carcass Traits, Some Blood Parameters and Humoral Immune Response of Broiler Chickens
Antibody Titre Blood Biochemistry Carcass Chicken Herbs Performance
2016/5/16
Different herbs and spices have been used as feed additives for various purposes in poultry production. This study was conducted to assess the effect of feed supplemented with black pepper (Piper nigr...
Rapamycin Rescues the Poor Developmental Capacity of Aged Porcine Oocytes
Reactive Oxygen Species (ROS) Mammalian Target of Rapamycin (mTOR)
2016/5/16
Unfertilized oocytes age inevitably after ovulation, which limits their fertilizable life span and embryonic development. Rapamycin affects mammalian target of rapamycin (mTOR) expression and cytoskel...
Comparison of Single and Blend Acidifiers as Alternative to Antibiotics on Growth Performance, Fecal Microflora, and Humoral Immunity in Weaned Piglets
Citric Acid Acidifier Blend Growth Performance Microorganism Immunity Challenged Piglets
2016/5/16
The banning of the use of antibiotics as feed additive has accelerated investigations of alternative feed additives in animal production. This experiment investigated the effect of pure citric acid or...
Effects of Low Level Water-soluble Pentosans, Alkaline-extractable Pentosans, and Xylanase on the Growth and Development of Broiler Chicks
Pentosan Xylanase Broiler Organ Growth
2016/5/12
This study investigated the effects of low levels of water-soluble pentosans (WSP), alkaline-extractable pentosans (AEP), and xylanase on the growth and organ development of broiler chicks. Three hund...
大绒鼠幼仔的生长发育和产热特征
大绒鼠 胎后发育 产热 晚成型动物
2016/7/19
为阐明大绒鼠幼仔的生长发育和代谢产热特征,本实验测定了1-49 日龄大绒鼠幼仔的体重、体温、静止代谢率(RMR)和非颤抖性产热(NST)。依据逻辑斯蒂曲线的拐点(24 d),大绒鼠的体重生长可划分为加速生长相和减速生长相,幼仔的体温在19 日龄前逐渐升高,22 日龄时接近成体水平;RMR 和NST分别在28日龄、19日龄前随日龄逐渐增加,RMR 在28日龄时接近成体水平,BAT 产热活性在7 日龄...
橙腹田鼠(Microtus ochrogaster)和草原田鼠(M. pennsylvanicus)是两种亲缘关系很近,但有着完全不同交配体制的田鼠。本文试图通过他们头骨的形态学比较来验证幼体生长发育(paedomorphosis)可以印证单配制交配体制进化的假说。通过几种头骨的测量,我们发现草原田鼠头骨的长与宽比例大于橙腹田鼠,说明前者具有相对狭长的头骨。进一步的测量发现,这种不同是由于草原田鼠...
为了掌握不同年龄、季节的獭兔体重分布规律,了解季节对獭兔生长发育的影响,以四川省獭兔原种场獭兔生长发育数据为分析对象,根据分析需要,将全年数据分配进12×8阶矩阵(季节×年龄),采用matlab2010a软件中的曲面拟合功能分析,并进行不同年龄獭兔的季节间体重多重比较。结果表明,体重分布曲面显示,91~180日龄与7~10月份体重分布明显凹陷,极大值与极小值差异显著(P<0.05),差异达500 ...
金色中仓鼠幼鼠可以利用可听声和超声信号与母鼠进行交流,这些声音可以反映个体的寒冷、饥饿、疼痛等不同生理状态和需求。因疼痛诱发的叫声对于维持幼鼠的存活也有着重要意义。本实验通过录制人为疼痛刺激下,不同日龄金色中仓鼠的叫声,分析并比较了5 - 30 日龄金色中仓鼠不同发声信号特征(可听声出现频次、可听声持续时程、可听声主频率、超声出现频次、超声持续时程、超声主频率)的性别差异;同时记录了幼鼠的两种发声...
By-product of Tropical Vermicelli Waste as a Novel Alternative Feedstuff in Broiler Diets
Dietary Electrolyte Balance Growing Rabbit Growth Performance Nitrogen Metabolism
2016/5/16
Two experiments were conducted to determine physical and chemical properties of vermicelli waste (VW) and effect of VW inclusion levels on growth performance of broilers. In experiment 1, VW samples w...
Effects of Dietary Electrolyte Balance on Growth Performance, Nitrogen Metabolism and Some Blood Biochemical Parameters of Growing Rabbits
Dietary Electrolyte Balance Growing Rabbit Growth Performance Nitrogen Metabolism
2016/5/16
The effects of different dietary electrolyte balance (DEB) on growth performance, nitrogen (N) metabolism and some blood biochemical parameters were investigated in 2 to 3 months old growing rabbits. ...
Effects of Trichostatin A on In vitro Development of Porcine Embryos Derived from Somatic Cell Nuclear Transfer
Histone Acetylation Porcine Embryo Somatic Cell Nuclear Transfer Trichostatin A
2016/5/16
Many different approaches have been developed to improve the efficiency of animal cloning by somatic cell nuclear transfer (SCNT), one of which is to modify histone acetylation levels using histone de...
Effects of Graded Levels of Montmorillonite on Performance, Hematological Parameters and Bone Mineralization in Weaned Pigs
Growth Performance Hematological Parameters Bone Mineralization Weaned Pig
2016/5/12
The aim of this study was to investigate the effects of graded levels of montmorillonite, a constituent of clay, on performance, hematological parameters and bone mineralization in weaned pigs. One hu...
Standardized Total Tract Digestibility of Phosphorus in Copra Expellers, Palm Kernel Expellers, and Cassava Root Fed to Growing Pigs
Phosphorus Availability Standardized Total Tract Digestibility Swine
2016/5/12
An experiment was conducted to determine the apparent total tract digestibility (ATTD) and standardized total tract digestibility (STTD) of phosphorus (P) in copra expellers (CE), palm kernel expeller...
Effect of Indigenous Herbs on Growth, Blood Metabolites and Carcass Characteristics in the Late Fattening Period of Hanwoo Steers
Herb Carcass Characteristic Blood Metabolite Hanwoo Steer
2016/5/12
This study was conducted to evaluate the effects of indigenous herbal supplements on growth, blood metabolites and carcass characteristics in the late fattening period of Hanwoo steers. In a 6 month f...