Báo cáo sinh học: " Genetic parameters for social effects on survival in cannibalistic layers: Combining survival analysis and a linear animal model" pdf

... parameters for social effects on survival in cannibalistic layers: Combining survival analysis and a linear animal model Esther D Ellen 1* , Vincent Ducrocq 2 , Bart J Ducro 1 , Roel F Veerkamp 3 , ... to include associative effects in the current software for survival analysis. A solution could be to combine survival analysis and a linear...

Ngày tải lên: 14/08/2014, 13:21

... fat and protein yields, fat and protein contents. Day of kidding and age at kidding were also taken into account in the breed comparison analysis. Yields were partially ... especially for contents: 1.51 g/kg in Alpine against 1.17 in Saanen for protein content, 2.68 g/kg against 2.38 for fat content. Whereas heritability for fat and...

Ngày tải lên: 14/08/2014, 19:23

... Theobservedphenotypicvar- iance was 5.57 for infected animals and 2.23 for bacteria negative animals; whereas the observed genetic variance was 0.16 for infected animals and 0.22 for bacteria-nega- tive animals. ... E, Kababea D, Winkler M, Glickman A, Saran A: Udder infection and milk somatic cell count, NAGase activity and milk composition–fat, protein and lactose in...

Ngày tải lên: 14/08/2014, 13:21

... regard, both traits had a genetic correlation near unity and very close heritability and repeatability values and were equally correlated to LILCY, indicating that protein and casein contents are ... milk was assumed to be a major factor determining cheese yield and quality [31,37] but there was no available information on its inheritance and genetic relationships, with...

Ngày tải lên: 14/08/2014, 13:21

... the only trait causing difficulties for the genetic analysis, being only slightly variable and exhibiting a strong asymmetrical distribution, even after a mathematical transformation. A major ... et al. 1. INTRODUCTION In humans and animals, the Salmonella species are facultative intracellular bacteria that are responsible for several pathologies: pneumonia, abortion, enteri...

Ngày tải lên: 14/08/2014, 13:22

... genetic parameters for litter size was also made by a Bayesian approach. LSN and LSI were analysed in bi-variate threshold AM and SM, assuming an underlying variable and two thresholds for each ... models are able to explain a larger proportion of the variation and increase the accuracy of prediction as compared to linear models. Especially for traits with low herita...

Ngày tải lên: 14/08/2014, 13:22

... estimated for twinning in the Maine-Anjou breed. Twin calving performance was analyzed as a threshold binary trait assuming direct and fetal effects and polygenic inheritance. ... Original article Genetic parameters for twinning in the Maine-Anjou breed E Manfredi JL Foulley, M San Cristobal, P Gillard Institut National de la Recherche Agron...

Ngày tải lên: 14/08/2014, 20:20

... a generalized linear model using a multinomial logistic transformation as link function was applied. Location parameters were estimated by ’maximum a posteriori’, and variance ... 76 maternal grandsires and 768 dams in line A and 8 164 chickens born from 94 sires, 71 maternal grandsires and 553 dams in line B. Both male and female...

Ngày tải lên: 09/08/2014, 18:22

... correlation between corrected yield and lactation length remained highly positive. Genetic parameters for first lactation dairy traits in Friesian, Montbéliarde and Normande ... while maintaining fat and protein content, the selection criterion must include fat yield, protein yield and protein content. Key words : Dairy cattle, genetic parame...

Ngày tải lên: 09/08/2014, 22:22

... sires and 67 dams for the generation hatched in 1999 and 48 dams for the generation hatched in 1998. An initial global estimation of the genetic parameters of body weight, breast yield and the various ... Further investigations are now required to increase the accuracy of the genetic parameter estimates by using both larger data sets and including new meat traits such as...

Ngày tải lên: 14/08/2014, 13:22