This study reports slaughter and carcass characteristics and meat quality as a result of crossing Leghorn chickens and five different genotypes. The experiment was carried out in the Prof. Dr. Hümeyra Özgen Research and Application Farm in Selcuk University. The…
Individual and maternal breed additive effects and heterosis exist for most economically important traits in cattle. Crossbreeding may therefore be valuable for emerging and commercial beef farmers in improving the productivity of their herds. Calves were produced by mating Afrikaner,…
Crossbreeding is regarded as a faster way than using pure dairy breeds to improve the reproductive performance of dairy cows, which is pivotal to farm income. The reproductive performances of Jersey and Fleckvieh × Jersey (F × J) heifers and…
Three genotypes of ostrich (South African Black, Zimbabwean Blue Necks and crosses between Zimbabwean Blue Neck males x South African Black females) were used to investigate the influence of genotype on the fatty acid composition of the musculus gastrocnemius and…
The FAO publication, Livestock’s Long Shadow, indicated that livestock is responsible for 18% of the world’s greenhouse gas production thereby creating the perception that livestock is a major cause of global warming. Methane (CH4) makes up 16% of total world…
Post-weaning growth performance was studied for 342 steers out of Africander cows and by Africander, Brahman, Charolais, Hereford and Simmentaler sires. In a system of intensive fattening, the latter three Bos taurus sire-breed progeny-groups performed strikingly better than the former…
The efficiency of meat production with regard to kilogram of lamb weaned per kilogram metabolic mass of ewes at mating of six different Fl crossbred populations, viz. Finnish Landrace x Merino (FL x M), Border Leicester x Merino (BL x…
Data from purebred and crossbred cattle, consisting of the Hereford (H), Simmentaler (S) Afrikaner (A) breeds, were analysed to estimate breed additive effects, individual heterotic effects, breed maternal and average maternal heterotic effects. The traits studied were birth mass, weaning…
Carcasses of 122 ram lambs born from Finnsheep X Merino (FM) and Merino (ME) as dam lines, crossed with the Ile de France (IF), SA Mutton Merino (SAMM), Dohne Merino (DM), FM and Merino as sire lines were evaluated for…
Data on 17258 weaning weight records of calves from a crossbreeding project were utilized to investigate the problem of collinearity and its effect on the estimation of direct, maternal and the non-additive genetic effects. Several criteria were used to detect the near-dependency…
Data on 17348 weaning weight records from a beef cattle crossbreeding operation were used to determine the effect of outliers on regression coefficients. Different criteria were used for detecting potential influential points. Eliminating a small number (932 or 5.4 %)…
In this study the possibilities of using the Ile de France x Akkaraman (G1) genotype (IDFAG1) in improving the growth performance and carcass characteristics of fat-tailed Karakas sheep raised in rural farm conditions in the Van Region of Eastern Anatolia,…
Live, carcass, leg and muscle weight (kg) as well as dressing percentage were compared between South African Black (Struthio camelus var. domesticus) ostriches, purebred Zimbabwean Blue Neck (Struthio camelus australis) ostriches and the progeny of Zimbabwean Blue Neck males crossed…
Data obtained from a pair-mated ostrich flock located at Oudtshoorn in South Africa were used to derive line differences for live weight and reproduction performance in sexually mature ostriches of the Zimbabwean Blue (ZB) and South African Black (SAB) strains…
Milk samples of two different crossbreds of Egyptian goats were analyzed for their physicochemical, technological and nutritional characteristics, in order to evaluate the effect of crossbreeding on milk properties. Crossbred goats (50% Damascus : 50% Barky) had better milk properties…
Data from purebred and crossbred cattle, consisting of the Afrikaner (A), Simmentaler (S) and Hereford (H) breeds managed in a relatively intensive but high stocking rate environment, were analysed to estimate breed direct effects, individual heterotic effects, breed maternal and…
The influence of sire breed and breed genotype of dam on calving interval (CI) and cow productivity (CP) in Afrikaner, Hereford, Simmentaler and Bonsmara cattle, as well as in Fl, and two- and three breed rotational crosses between Afrikaner, Hereford…
The influence of sire breed and breed genotype of dam on birth and weaning mass in calves of Afrikaner, Hereford, Simmentaler and Bonsmara cattle, as well as F1 and two- and three-breed rotational crosses between Afrikaner, Hereford and Simmentaler were…
Genes were introduced from the prolific Finnish Landrace sheep breed by crossbreeding with indigenous breeds to produce several composites. In this study, two of these composites were compared to the Dorper in terms of reproductive characteristics and growth. Mean ovulation…
Breeding indigenous cows to terminal sires may facilitate production of calves in the emerging sector that better meet commercial feedlot requirements. Thus, the objective of this research was to develop breeding objectives for Angus and Charolais terminal sires to be…
