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Genotype x environment interactions in sheep

Creator:: Corum, Kathleen Steele
Abstract:: The 865 ewe production records taken from three lamb crops, were analyzed to study breed effects, heterosis, environmental effects and interactions between them, and breed and heterosis x environment interaction effects on ewe production traits. In each of two environments, approximately 144 ewes were mated in a three breed reciprocal...
Resource Type:: Masters Thesis
Full Text:: INTERACTIONS IN SHEEP Abstract approved: Redacted for privacy (Signature) William D. Hohenboken The 865 ewe

Genetic and environmental differences in age at first estrus and in wool and lamb production of crossbred ewe lambs

Creator:: Cedillo, Rose Mary
Abstract:: Genetic and environmental factors affecting age of first estrus, wool production, reproduction and lamb production were examined in eight groups of crossbred ewe lambs from two birth years. The 399 ewe lambs whose first year production was analyzed were from eight crossbred groups resulting from mating North Country Cheviot, Dorset,...
Resource Type:: Masters Thesis
Full Text:: EWE LAMBS Abstract approved: Redacted for privacy W. D. Hohenboken Genetic and environmental

Biological and economic effects of flushing and creep feeding in sheep

Creator:: Taiwo, Bolaji
Abstract:: One hundred two mature blackface crossbred ewes were randomly divided into three equal groups to examine the effects of feeding management during mating on blood chemistry, weight change and subsequent reproductive performance. Group I was kept in drylot from 17 days before through 17 days after the start of mating....
Resource Type:: Masters Thesis
Full Text:: Privacy W. D. Hohenboken One hundred two mature blackface crossbred ewes were randomly divided into

The inheritance of appetite in ruminants

Creator:: Ngam, Joe Eric Tosah
Abstract:: The study involved three separate research efforts in which 10 Holstein calves and 85 purebred Hampshire and Suffolk ewe and ram lambs were employed. The objectives of the experiments were to characterize appetite, describe its inheritance and evaluate its associations with animal performance. In the calf experiment, appetite was determined...
Resource Type:: Masters Thesis
Full Text:: : Redacted for Privacy W. D. Hohenboken The study involved three separate research efforts in which 10

Crossbred lamb production from Columbia and Suffolk ewes

Creator:: Levine, Joel Martin
Resource Type:: Masters Thesis
Full Text:: : Redacted for privacy William D. Hohenboken I. EWE PRODUCTION AND LAMB TRAITS Four hundred and thirty

Computer simulation of beef cattle production systems in the Llanos of Columbia

Creator:: Levine, Joel Martin
Abstract:: A simulation model capable of execution on a programmable calculator was developed to study voluntary intake, liveweight change, and fertility of grade Zebu cows in the Llanos of Colombia. Organic nitrogen in the diet and meta bolic weight were used to predict intake; age, liveweight, and energy concentration were the...
Resource Type:: Dissertation
Full Text:: Production Systems in the Llanos of Colombia Abstract approved: Redacted for privacy William D. Hohenboken

Relationships between hemoglobin genotype and production in cross-bred ewes. I. Reproduction and lamb production : II. Wool and milk production and health related traits

Creator:: Dally, Martin R.
Abstract:: I. REPRODUCTION AND LAMB PRODUCTION Relationships among hemoglobin (Hb) genotypes and reproduction and production traits were examined in 294 four- and five-year-old North Country Cheviot, Dorset, Finnsheep or Romney x Suffolk or Columbia-type crossbred ewes. Hb BB ewe lambs were youngest at first estrus and Hb AA ewe lambs were...
Resource Type:: Masters Thesis
Full Text:: PRODUCTION AND HEALTH RELATED TRAITS Abstract approved: Redacted for privacy William D. Hohenboken I

Milk production and progeny growth in crossbred sheep

Creator:: Torres-Hernandez, Glafiro
Resource Type:: Dissertation
Full Text:: approved: Redacted for privacy William D. Hohenboken I. GENETIC AND ENVIRONMENTAL EFFECTS ON MILK

Genetic differences in concentration of immunoglobulins M and G in serum and colostrum of cows and in serum of neonatal calves

Creator:: Norman, Lindsay M.
Resource Type:: Masters Thesis
Full Text:: COLOSTRUM OF COWS AND IN SERUM OF NEONATAL CALVES Abstract approved: Redacted for Privacy William D

The inheritance of spermatozoan midpiece length and its relationship with traits of economic importance in cattle

Creator:: Lukefahr, Steven D.
Resource Type:: Masters Thesis
Full Text:: Abstract approved: Redacted for Privacy William D. Hohenboken In two cattle populations; dairy and beef

ScholarsArchive@OSU

Genotype x environment interactions in sheep

Genetic and environmental differences in age at first estrus and in wool and lamb production of crossbred ewe lambs

Biological and economic effects of flushing and creep feeding in sheep

The inheritance of appetite in ruminants

Crossbred lamb production from Columbia and Suffolk ewes

Computer simulation of beef cattle production systems in the Llanos of Columbia

Relationships between hemoglobin genotype and production in cross-bred ewes. I. Reproduction and lamb production : II. Wool and milk production and health related traits

Milk production and progeny growth in crossbred sheep

Genetic differences in concentration of immunoglobulins M and G in serum and colostrum of cows and in serum of neonatal calves

The inheritance of spermatozoan midpiece length and its relationship with traits of economic importance in cattle

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