搜索结果: 1-15 共查到“农学 Body weight”相关记录26条 . 查询时间(0.078 秒)
Different Coefficients and Exponents for Metabolic Body Weight in a Model to Estimate Individual Feed Intake for Growing-finishing Pigs
Feed Consumption Group-housing Growth Performance Maintenance Energy Swine
2016/12/28
Estimation of feed intake (FI) for individual animals within a pen is needed in situations where more than one animal share a feeder during feeding trials. A partitioning method (PM) was previously pu...
Interrelationships of body weight and bone weight with densitometric properties of tibiotarsal bone in geese during post-hatching development
densitometry parameters tibiotarsal bone mineralisation geese
2015/12/17
The aim of this study was to evaluate interrelationships of body weight and bone weight and densitometric properties of the tibiotarsus in White Koluda Geese (W31) in the post-hatching period. The stu...
Uterine size in replacement gilts associated with age, body weight, growth rate, and reproductive status
pig reproduction puberty uterus
2015/7/2
The objective of the present study was to determine the association between the uterine size and age, body weight, growth rate, and reproductive status in Landrace × Yorkshire crossbred gilts. Genital...
Relationships among milk yield, body weight, and reproduction in Holstein and Czech Fleckvieh cows
dairy cow negative energy balance
2015/6/23
A retrospective, observational study comprised analyses of individual cow records from
a computerised herd management system. Production, body weight, and reproduction data were collected
between ...
Defective eggs and their relationship to egg yield, egg and body weight in hens of five original laying lines
hens cracked eggs double-yolk eggs
2015/6/5
We investigated 3 985 individually housed hens of five original laying lines of two breeds RIR and BPR. The proportion of abnormal eggs out of the eggs laid before the age of 240 days ranged between 7...
Effects of differences in the initial body weight of groups on laying performance and egg quality parameters of Lohmann laying hens
body weight laying hen laying performance egg quality traits
2015/6/5
This study was carried out to investigate the effect of different body weight groups (light (L) = 1 400–1 500; medium (M) = 1 500–1 600 and heavy (H) = 1 600 < g) on performance and egg quality traits...
Trajectory of body weight of performance tested dual-purpose bulls
cattle random regression heritability genetic correlation growth curve linear spline
2015/6/4
6 508 bulls of dual-purpose cattle at performance-test stations were weighed at intervals of 30 days from birth to 420 days. After all editing a total of 74 558 weight records were available. Live wei...
Genetic parameters of live body weight, body measurements, greasy fleece weight, and reproduction traits in Makuie sheep breed
direct and maternal effects heritability
2014/10/28
Genetic parameters of production and reproduction traits were estimated using 39,926 records from 5,860 individual progenies of 163 sires and 1,558 dams. The data were collected at Makuie Sheep Breedi...
Prolificacy and Its Relationship with Age, Body Weight, Parity, Previous Litter Size and Body Linear Type Traits in Meat-type Goats
Goat, Black Bengal Prolificacy Linear Type Traits Litter Size Pregnancy
2016/5/16
Data on age and body weight at breeding, parity, previous litter size, days open and some descriptive body linear traits from 389 meat-type, prolific Black Bengal goats in Tripura State of India, were...
Effect of Short-term Water Restriction on Body Weight, Egg Production, and Immune Response of Local and Commercial Layers in the Late Phase of Production
Water Restriction Body Weight Egg Production Immune Response
2016/5/6
Forty-five Hisex commercial layers and forty-five local Saudi breed layers were used to determine the acceptable limit of short-term water restriction in the late phase of production, when the problem...
Longitudinal Analysis of Body Weight and Feed Intake in Selection Lines for Residual Feed Intake in Pigs
Longitudinal Analysis Pigs Residual Feed Intake Selection
2016/5/5
A selection experiment for reduced residual feed intake (RFI) in Yorkshire pigs consisted of a line selected for lower RFI (LRFI) and a random control line (CTRL). Longitudinal measurements of daily f...
Effects of Maternal Nutrition during Pregnancy on the Body Weight, Muscle Fiber Number, Carcass Traits, and Pork Quality Traits of Offspring
Maternal Nutrition High Energy High Protein Birth Weight Muscle Fiber Number Pork Quality
2016/5/5
The purpose of the current study was to examine the influence of different maternal nutrition treatments during pregnancy on body weight, muscle fiber number, carcass traits, and pork quality traits o...
Effects of Maternal Factors on Day-old Chick Body Weight and Its Relationship with Weight at Six Weeks of Age in a Commercial Broiler Line
Broiler Line Maternal Effects Animal Model Restricted Maximum Likelihood Procedure Heritability Genetic Variance
2016/5/4
The present study aimed to investigate the effects of maternal factors on body weight at hatching (day-old) and at six weeks of age in a commercial broiler line. A total of 6,765 records on body weigh...
Long Term Selection for Small Body Weight in Japanese Quail I:Direct Selection Response from 60 to 65th Generations
selection limit body weight small size heritability Japanese quail
2009/7/31
It is important to know the limit of artificial selection for efficient animal production. The aim of this research was to examine whether the selection for small body weight in Japanese quail has rea...
A Review of Some Results of Selection for Juvenile Body Weight in Chickens
broilers correlated responses feed intake growth selection
2009/7/31
The development of the commercial broiler industry during the last half of the 20th century has seen dramatic changes in growth, feed efficiency, and yield. In this paper we extracted results from thr...