Results 51 to 60 of about 125,988 (221)

Body condition status at mating affects gestation length, offspring yield and return rate in ewes [PDF]

Archives Animal Breeding, 2018
The present study was planned to determine the effect of ewe body condition score (BCS) and parities on fertility, return rate, gestation length, fecundity, litter size and lamb birth weight.
M. A. Cam, M. A. Cam, A. V. Garipoglu, A. V. Garipoglu, K. Kirikci, K. Kirikci   +5 more
doaj   +1 more source

Litter size, litter weight, and lamb survivability of Doyogena sheep managed under community-based breeding program in Ethiopia

Heliyon, 2022
Increasing litter size and weight during the marketing time by decreasing mortality among lambs per ewe is the objective of the community-based breeding program (CBBP).
Kebede Habtegiorgis, Aynalem Haile, Tesfaye Getachew, Adisu Jimma, Deribe Gemiyo   +4 more
doaj   +1 more source

Extreme weather and economic crisis in the 1430s in England, and the implications for tenurial change

The Economic History Review, EarlyView.
Abstract The 1430s were characterized by extreme weather conditions, food and fodder shortages, and high mortalities among animals and humans, although the severity of events and their consequences in England have received limited attention. The economic downturn and the depressed customary land market in this decade marked the beginning of the Great ...
Mark Bailey
wiley   +1 more source

A note on the association of haemoglobin types with ewe and ram fertility and lamb mortality in Indian sheep

, 1971
SUMMARYHaemoglobin types of two Indian breeds of sheep were related to ram and ewe fertility and lamb mortality. Rams with Hb B type had a significantly higher number of lambs born to ewes mated to them.
S. N. Kakar, C. L. Arora, R. M. Acharya
core   +1 more source

Ewe and Lamb

, 1943
An ewe with her black lamb in a ...
Agriculture and Agri-Food Canada
core   +1 more source

Exploring the Genetic Variation of Fleece and Crutch Shedding in Sheep, Recorded at Different Times Within and Across Age Classes

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT The global value of wool from coarse woolled sheep continues to decline, prompting producers to seek alternatives that reduce or eliminate the need for shearing. Several sheep breeds naturally shed their fleece in response to photoperiod, and these breeds are being crossed with populations that have high genetic merit for traits such as ...
Erin G. Smith, John R. Keiller, Matt P. Kelly, Daniel J. Brown, Samuel F. Walkom   +4 more
wiley   +1 more source

Effects of Breed of Ewe and Management System on the Production of Lamb and Wool [PDF]

, 1985
The ability of ewe lambs to produce a lamb crop at 12 months of age can improve the economic outcome for sheep production. In addition to environmental factors, breed differences in ewe lamb fertility exist.
Busch, W. J., Slyter, A. L.
core   +1 more source

Genetic Correlations Between Fleece Shedding and Production Traits Indicate Minimal Trade‐Offs When Breeding for Maternal Shedding Sheep

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT Fleece shedding is becoming an increasingly important trait in sheep production systems focused on meat and dairy, where wool has limited economic value and reducing shearing costs is desirable. For inclusion in breeding programmes, a trait must exhibit genetic variation, sufficient heritability, and have well‐defined relationships with other ...
Erin G. Smith, John R. Keiller, Matt P. Kelly, Daniel J. Brown, Samuel F. Walkom   +4 more
wiley   +1 more source

Effects of shearing at housing, grass silage feed value and extended grazing herbage allowance on ewe and subsequent lamb performance

Animal, 2009
The study involved 120 crossbred ewes (sixty 1.5 years old animals and sixty 2.5 years old animals; initial liveweight 67.6 kg, condition score 3.7), that were mated in October.
T.W.J. Keady, J.P. Hanrahan
doaj   +1 more source

Estimates of Genetic Parameters for Ewe Longevity and Lifetime Reproductive Performance Traits in South African Merino Sheep

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT Ewe's functional longevity impacts flock profitability by reducing annual ewe replacement costs and increasing ewe outputs over the production cycle. In this context, the main objective of this study was to estimate variance components and genetic parameters of five ewe longevity indicators in South African Merino sheep.
Luis Fernando Batista Pinto, Carina Visser, Artur O. Rocha, Jackeline Santos Alves, Luiz F. Brito   +4 more
wiley   +1 more source