搜索结果: 1-15 共查到“畜牧学 Litter”相关记录27条 . 查询时间(0.079 秒)
Effects of 20-day litter weight on weaned piglets’ fighting behavior after group mixing and on heart rate variability in an isolation test
Fighting Behavior Isolation Test Skin Lesion Score Heart Rate Variability Autonomic Nervous System
2017/3/9
The objective of this study was to investigate the effect of 20-day litter weight on behavior and heart rate variability (HRV) of piglets under stress.
Expression analysis of the porcine Homeobox A11 gene and its association with litter size in Large White pigs
endometrium HOXA11 qPCR single nucleotide polymorphism litter size
2016/6/3
The homeobox A11 (HOXA11) gene, a well-known transcriptional regulator, plays a critical role in normal development of the uterus. In this study, the porcine HOXA11 gene, including its promoter region...
Effect of service sire on litter size traits in Czech Large White and Landrace pigs
pig litter size traits genetic parameters
2015/6/23
The proportion of variance for service sire was in the range from
2 to 3% (standard error approx. 0.2%) in Czech Large White and 2% (standard error approx. 0.3%) in Czech
Landrace for all thr...
The influence of litter age, litter temperature and ventilation rate on ammonia emissions from a broiler rearing facility
ammonia litter broiler chickens grow-out period ventilation rate
2015/6/8
The research reported in this article attempts to address the ammonia problem by quantifying the effect of several variables on ammonia concentrations and emissions. These variables include litter tem...
The quality comparison of eggs laid by laying hens kept in battery cages and in a deep litter system
laying hen rearing technology egg weight egg albumen weight yolk weight yolk cholesterol yolk colour shell strength
2015/6/2
At present the laying hen rearing is transformed into alternative housing systems which include a deep litter system. As for the poultry nutrition, the replacement of animal protein with vegetable pro...
Herd specific effects of the ESR gene on litter size and production traits in Czech Large White sows
pig reproduction litter size
2015/6/1
The effect of PvuII polymorphism of the oestrogen receptor gene on litter size and production traits in a Czech Large White population (882 sows, 2 455 litters) was evaluated. Data were analysed by fo...
Breeding value evaluation in Polish fur animals: Estimates of direct heritability and portion of litter variation of fur coat and reproduction traits
arctic fox fur coat heritability
2015/6/1
The study presents estimates of heritability for fur coat and reproduction traits in arctic and silver foxes kept on Polish farms. The estimates of variance components were calculated using the DFREML...
Effects of Bedding Material Composition in Deep Litter Systems on Bedding Characteristics and Growth Performance of Limousin Calves
Serum Physico-chemical Parameters Ammonia-N Limousin Calves
2016/5/17
The objective of this study was to evaluate the effects of different litter mixture compositions on bedding system temperature, pH and volatile fatty acid and ammonia-N (NH3-N) content, and the serum ...
Genetic parameters for litter size in Black Slavonian pigs
multiple trait model random regression model
2014/10/23
The objective of this study was to estimate genetic parameters for litter size of Black Slavonian pigs using the repeatability, multiple trait, and random regression models, and to consider the possib...
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...
Short communication. Milk yield and composition, dry matter intake and blood parameters of Holstein cows fed ensiled apple pomace co-ensiled with broiler litter
apple pomace silage broiler litter Holstein dairy cows performance
2014/10/24
The present study was carried out to evaluate the effects of ensiled mixed apple pomace and broiler litter (EAPBL) on milk yield (MY) and composition, dry matter intake (DMI) and blood parameters at e...
Effect of Bacillus Subtilis-based Direct-fed Microbials on Immune Status in Broiler Chickens Raised on Fresh or Used Litter
Direct-fed Microbials Cytokines Broiler Chickens Used Litter Immunity
2016/5/12
Type of dietary direct-fed microbials (DFMs) or poultry litter could directly influence the composition of gut microbiota. Gut microbiota plays an important role in shaping the developing immune syste...
Influence of Rabbit Sire Genetic Origin, Season of Birth and Parity Order on Doe and Litter Performance in an Organic Production System
Rabbit Organic Production System Reproduction Genetic Origin
2016/5/11
The aim of this study was to compare both the performance of litters derived from two sire genetic origins (SGO), Vienna Blue (VB) and Burgundy Fawn (BF), along successive seasons of birth (SB; winter...
Effects of Creep Feed with Varied Energy Density Diets on Litter Performance
Creep Feed Energy Piglet
2016/5/9
This study was conducted to evaluate the effects of creep feed with different energy densities on litter performance. A total of 30 sows (LandraceYorkshire) and their litters were randomly ass...
Association of Polymorphisms in Fecundity Genes of GDF9, BMP15 and BMP15-1B with Litter Size in Iranian Baluchi Sheep
BMP15 BMP15-1B GDF9 Litter Size Baluchi Sheep
2016/5/6
The incidence of mutation in three loci of GDF9, BMP15 and BMP15-1B and their effects on litter sizes was evaluated in Baluchi sheep. Wild-type alleles were detected for BMP15 and BMP15-1B loci and al...