Results 81 to 90 of about 40,655 (257)

Analysis of Levels of Inbreeding and Inbreeding Depression in Jersey Cattle

Journal of Dairy Science, 1992
A pedigree file of 157,015 male and female Jersey cattle (born after 1955) from the Canadian herdbooks was investigated for the occurrence of inbreeding. A large proportion of Jersey bulls and cows were inbred (32.4 and 36.3% for bulls and cows, respectively). However, average inbreeding coefficients of these inbred cows and of all cows were low. First
F, Miglior, B, Szkotnicki, E B, Burnside
openaire   +2 more sources

Males are worse mothers: Comparing care patterns in a facultatively caring beetle

Insect Science, EarlyView.
Why should biparental care exist if offspring fare just as well when only one parent is present? In the facultatively dependent burying beetle, Nicrophorus vespilloides, manipulating environmental quality reveals that biparental care benefits offspring in form of lower personal immune requirement and parents in term of weight gain.
Leon Müller, Patrick Limburg, Maximilian Körner   +2 more
wiley   +1 more source

EFFECT OF INBREEDING ON SOME PERFORMANCE TRAITS IN SAHIWAL CATTLE

Pakistan Veterinary Journal, 2001
Pedigree, breeding and performance records of a purebred Sahiwal herd maintained at Livestock Experiment Station, Jahangirabad, Khanewal during the period 1939-97 were utilised for the present study. The effect of inbreeding on various performance traits
Khalid laved, Ghulam Mohiuddin1 and Muhammad Abdullah1
doaj  

Museomics Deciphers the Phylogeographic Differentiation and Conservation Status of a Montane Pheasant

Integrative Zoology, EarlyView.
Museum specimens provide a rich source of historical DNA, enabling insights into phylogenetic relationships and demographic history of the endangered Koklass Pheasant. Our findings uncovered a previously unrecognized population in Guizhou province and highlighted elevated extinction risk in populations from Anhui province and Southern China, informing ...
Zhiyong Jiang, Yalin Cheng, Shuai Zhang, Wenqing Zang, Peng He, Dezhi Zhang, Jinjuan Mei, Peng Cui, Yanhua Qu, Hailong Wu   +9 more
wiley   +1 more source

Inbreeding depression in Holstein cattle in Brazil

Revista Brasileira de Zootecnia
The objective of this study was to evaluate inbreeding depression in Holstein cows in Brazil, considering their 305-day milk production (MP), age of first calving (AFC), and calving interval (CI).
Mário Henrique Magalhães Araújo da Silva, Carlos Henrique Mendes Malhado, Elisandra Lurdes Kern, Darlene dos Santos Daltro, Jaime Araujo Cobuci, Paulo Luiz Souza Carneiro   +5 more
doaj   +1 more source

The Size, Demography, and Distribution of Cambodia's Largest Elephant Population Revealed Using Traditional Genetic Tools and a Novel SNP Panel

Integrative Zoology, EarlyView.
Asian elephant population parameters were assessed using microsatellite, SNP, and sex determination DNA markers. This represents one of the first studies in mainland Asia to demonstrate that integrating microsatellite and SNP data enhances genotyping success from degraded fecal samples, increases the number of useable samples and markers, and ...
Rachel Crouthers, Wayne Linklater, Peter Ritchie, Visattha In, Chanrith Phoeurk, Alexander Ball   +5 more
wiley   +1 more source

Genomic Investigations Unveil the Genetic Underpinnings of Environmental Adaptation in African Goat Populations

Integrative Zoology, EarlyView.
This study integrates genomics and landscape genetics to analyze African goat environmental adaptation. Analyzing 1591 samples, it finds population structure differentiates geographically into four groups, with gene flow between wild Yura goats and North Africans.
Weifeng Peng, Yihua Wang, Yiyuan Zhang, Lei Gao, Lili Wu, Shuping Wang, Yiyang Gao, Wanlu Shi, Kaixin Lu, Rong Deng, Junting Li, Jing Han, Xiaohui Lu, Yujie Liu, Xiaojiao Tang, Yunxia Zhang, Guoyin Li, Li Huang, Mingsheng Yang, Xiaoyan Li   +19 more
wiley   +1 more source

Decades of Enclosure Protection Exert Composite Effects on Grassland Grasshopper Communities

Integrative Zoology, EarlyView.
Decades of enclosure protection have altered grasshopper community structure, with species‐specific effects on population dynamics. For the low‐mobility grasshopper Chorthippus fallax, abundance did not differ strongly between exclosure‐protected and overgrazed areas, but its egg development duration was longer in exclosures. The two C.
Dan‐dan Feng, Hui‐feng Zhao, Ya‐hui Men, Jing Li, Mei‐ling Yang, Cai‐qing Yang, Bing Chen, Ai‐bing Zhang   +7 more
wiley   +1 more source

Spatially realistic dynamic N‐mixture models

Methods in Ecology and Evolution, EarlyView.
Abstract Dispersal is a complex ecological process that can be driven by the abiotic environment, density‐dependent processes and species mobility. Traditionally, dispersal has been studied with capture‐based data that are often limited in space and time. More recently, spatial dynamic N‐mixture models (i.e.
Qing Zhao, Paige E. Howell, Erin Muths, Brent H. Sigafus, Blake R. Hossack, Christopher E. Latimer   +5 more
wiley   +1 more source

Burrow Persistence and Spatial Distribution of Federally and State‐Protected Gopher Tortoise (Gopherus polyphemus) Populations in Southwest Alabama

Animal Conservation, EarlyView.
The gopher tortoise (Gopherus polyphemus), a keystone species and ecosystem engineer, has declined by ~80% over the past century due to primarily habitat loss. In a 28‐year resurvey of federally protected Mobile County and state‐protected Baldwin County, we found tortoise populations persisted at ~59% and ~31% of sites, respectively, with significant ...
Robin B. Lloyd Jr., Jeremiah A. Henning, Steven R. Schultze, David H. Nelson, Adam D. Chupp   +4 more
wiley   +1 more source