Australia article about crossbred swine pdf
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australia article about crossbred swine pdf

(PDF) Variance components and heritabilities for sow. Find information on swine flu, including prevention and treatment, at Everyday Health. Search. Log in My Profile All Swine Flu Articles. Last Updated: 9/10/2009. Don't Miss This., Swine It is believed that the majority of the breeds we now know are descended from the Eurasian Wild Boar (Sus scrofa). Archaeological evidence from the Middle East indicates domestication of the pig occurs as early as 9,000 years ago, with some evidence for domestication even earlier in China..

A Summary of Swine Crossbreeding Research at University

Major Swine Breeds Pork Checkoff. Autogenous sow vaccination for Glasser’s disease in weaner pigs in two large swine farm systems RB, PB: Department of Primary Industry, Yeerongpilly 4105, Queensland, Australia. Corresponding author: Dr Steven McOrist, University Bowles R, Blackall P. Autogenous sow vaccination for Glasser’s disease in weaner pigs in two large swine, Apr 01, 2015 · An assumption that is routinely made in multibreed programs is that purebred and crossbred performance is regarded as the same trait. Wei and van der Werf (1994) found that response to selection for crossbred animals increased using the combined information as the genetic correlation (r pc) between purebred and crossbred animals decreased from 1.0..

Australia - Prospects for the Australian pig industry Swine closing inventories for CY 2011 are forecast at 2.5 million head, up on the 2.45 million head estimated for CY 2010. Closing inventory for CY 2009 has been revised upwards from 2.3 million head to 2.302 million … The farrow to wean segment of the swine industry is the one in which the producer maintains a herd of pregnant sows. They may either practice early weaning and wean their piglets at 10 to 15 pounds and send them to a nursery for specialized care (the most modern form of production), or wait to wean them until they reach 30 to 35 pounds, in which case the piglets are then referred to as feeder

of crossbreeding systems in terms of a few parameters (Dickerson, 1969, 1973). Sellier (1976) reviewed much of the recent European crossbreeding research and used Dickerson's approach to compare different crossing schemes. The objectives of this report … Jan 12, 2017 · Breeding for crossbred performance. Traditionally, estimation of breeding values has used data collected from purebred animals collected at nucleus farms. Although this strategy has enabled important genetic progress for decades, improvements made at the nucleus are not fully realized at the commercial level.

Differences in litter size and growth rate among purebred and crossbred swine James Abner Gaines Iowa State College Follow this and additional works at:https://lib.dr.iastate.edu/rtd Part of theGenetics Commons, and theVeterinary Pathology and Pathobiology Commons REPRODUCTIVE PERFORMANCE FOR FOUR BREEDS OF SWINE: CROSSBRED FEMALES AND PUREBRED AND CROSSBRED BOARS 1 D. S. Buchanan a and R. K. Johnson 3 Oklahoma State University, Stillwater 74078 Summary Matings and litters were studied involving all three-breed crosses (sired by purebred

Swine flu, also called Hog or Pig Flu, is an infection caused by any one of the several types of Swine influenza virus (SIV) which is common throughout pig population world wide. The purpose of this study was to analyze reproductive performance in purebred Landrace and Yorkshire sows with special reference to seasonal influence and parity number, under tropical conditions where day length is almost constant throughout the year Data from three purebred sow herds in Thailand during the period from 1993 to 1996 were analyzed The two breeds were present in all three herds

Swine It is believed that the majority of the breeds we now know are descended from the Eurasian Wild Boar (Sus scrofa). Archaeological evidence from the Middle East indicates domestication of the pig occurs as early as 9,000 years ago, with some evidence for domestication even earlier in China. performance of crossbred dairy cattle present at three military dairy farms is given in Table 1. The average 305-d milk yield for crossbreds was 1613В±49.03 kg. This economically important trait varied widely among three herds of military dairy farms. The highest 305-d milk yield was found for Neelum Military dairy farm, Okara

Litter Performance for Various Types of Crossbred Females in Swine D.S. Buchanan,' R.K. Johnson2 and R. Vencl' Story in Brief Crossbred females were mated to purebred boars to obtain 493 litters representing all possible three-breed and four-breed cross litters involviIf!S Duroc, Yorkshire, Spotted and Landrace breeds. Litters were evaluated for Apr 01, 2015В В· An assumption that is routinely made in multibreed programs is that purebred and crossbred performance is regarded as the same trait. Wei and van der Werf (1994) found that response to selection for crossbred animals increased using the combined information as the genetic correlation (r pc) between purebred and crossbred animals decreased from 1.0.

performance of crossbred dairy cattle present at three military dairy farms is given in Table 1. The average 305-d milk yield for crossbreds was 1613В±49.03 kg. This economically important trait varied widely among three herds of military dairy farms. The highest 305-d milk yield was found for Neelum Military dairy farm, Okara The second-most recorded breed of swine in the United States, the red pigs with the drooping ears are valued for their product quality, carcass yield, fast growth and lean-gain efficiency. They also add value through their prolificacy and longevity in the female line.

Crossbred definition of crossbred by The Free Dictionary. Aug 28, 2017В В· In a press article on the WUR website, the researchers explain that production animals in pigs are generally crossbred animals, while selection takes place in purebred animals. That is why the genetic correlation between purebred and crossbred performance, known as the purebred-crossbred correlation, is very important., Pig genetics and breeding information (external website) Pig breeds in Australia; Pig breeds brochure (PDF, 724.5 KB) Spotlight Understanding the pork industry A brief overview of pork production in NSW. NSW pork industry overview 2015.

Autogenous sow vaccination for Glasser’s disease in weaner

australia article about crossbred swine pdf

Crossbred Boar Show National Swine Registry. Pig genetics and breeding information (external website) Pig breeds in Australia; Pig breeds brochure (PDF, 724.5 KB) Spotlight Understanding the pork industry A brief overview of pork production in NSW. NSW pork industry overview 2015, Differences in litter size and growth rate among purebred and crossbred swine James Abner Gaines Iowa State College Follow this and additional works at:https://lib.dr.iastate.edu/rtd Part of theGenetics Commons, and theVeterinary Pathology and Pathobiology Commons.

All Swine Flu Articles Everyday Health

australia article about crossbred swine pdf

BOARD INVITED REVIEW The purebred-crossbred correlation. Differences in litter size and growth rate among purebred and crossbred swine James Abner Gaines Iowa State College Follow this and additional works at:https://lib.dr.iastate.edu/rtd Part of theGenetics Commons, and theVeterinary Pathology and Pathobiology Commons Sep 14, 2011В В· Crossbreeding systems for beef cattle. Female F1 crossbred progeny are mated to males of one of the parental breeds and all progeny are sold for slaughter. This breeding system takes full advantage of heterosis for maternal traits such as fertility of the cow, and milking/mothering ability (as the mother expresses 100% of possible heterosis.

australia article about crossbred swine pdf


Abstract. Records of 195 crossbred pigs (75 % Landrace + 25% Desi ), raised over a period of 2 years from 2014 to 2015, maintained at the Livestock Production Research (Pigs), Indian Veterinary Research Institute, Izatnagar, Uttar Pradesh were used in this study to determine the effect of various environmental factors on growth and litter traits. BMC Veterinary Research is an open access journal publishing original peer-reviewed research articles in all aspects of veterinary science and medicine,

Autogenous sow vaccination for Glasser’s disease in weaner pigs in two large swine farm systems RB, PB: Department of Primary Industry, Yeerongpilly 4105, Queensland, Australia. Corresponding author: Dr Steven McOrist, University Bowles R, Blackall P. Autogenous sow vaccination for Glasser’s disease in weaner pigs in two large swine Purebred-crossbred correlation in pigs 3469 ter in the nucleus environment, resulting in a larger effect of heat stress in crossbred animals on commercial farms (Fragomeni et al., 2016). Therefore, the genes affecting traits like disease tolerance and response to heat stress may have a larger effect on performance in the com-

2019 Fall Classic Crossbred Boar Sale. The NSR Show Ring is the official app for the National Swine Registry. Stay up to date with deadlines and information for all upcoming NSR and NJSA events. Receive timely push notifications about deadlines, schedules and … Niche Pork Production Reproduction and Genetics Crossbreeding and Hybrid Vigor Authors Peter J. Lammers David R. Stender Mark S. Honeyman IPIC NPP410 2007 How pigs perform is the result of two influences: genetics and environment. The genetics or heredity of a pig sets the upper

Jan 12, 2017В В· Breeding for crossbred performance. Traditionally, estimation of breeding values has used data collected from purebred animals collected at nucleus farms. Although this strategy has enabled important genetic progress for decades, improvements made at the nucleus are not fully realized at the commercial level. Purebred-crossbred correlation in pigs 3469 ter in the nucleus environment, resulting in a larger effect of heat stress in crossbred animals on commercial farms (Fragomeni et al., 2016). Therefore, the genes affecting traits like disease tolerance and response to heat stress may have a larger effect on performance in the com-

"Breeds of Livestock - Swine Breeds". ansi.okstate.edu. Oklahoma State University Dept. of Animal Science. Ekarius, Carol (2008). Storey's Illustrated Breed Guide to Sheep, Goats, Cattle and Pigs. Storey Publishing. ISBN 978-1-60342-036-5 2019 Fall Classic Crossbred Boar Sale. The NSR Show Ring is the official app for the National Swine Registry. Stay up to date with deadlines and information for all upcoming NSR and NJSA events. Receive timely push notifications about deadlines, schedules and …

Fortune Cookie sired the popular $22,000 Joostbern crossbred boar at the 2015 NSR Fall Classic in Duncan, OK! Fortune Cookie's sire, Fortune, continues to leave his mark on the crossbred showpig industry having recently sired the Reserve Grand Overall at the 2016 National Western Stock Show! SWINE GENETICS INTERNATIONAL 30805 595TH AVENUE Jan 12, 2017В В· Breeding for crossbred performance. Traditionally, estimation of breeding values has used data collected from purebred animals collected at nucleus farms. Although this strategy has enabled important genetic progress for decades, improvements made at the nucleus are not fully realized at the commercial level.

May 08, 2017В В· Beef cattle were introduced to Australia in 1788, with the first herds based on British breeds, particularly the Shorthorn. This breed was associated with the opening up of each new area of pastoral Australia in the early days, and was especially dominant in north-western Queensland, the Northern Territory and the Kimberley region of Western Australia. In pig breeding, selection is usually carried out in purebred populations, although the final goal is to improve crossbred performance. Genomic selection can be used to select purebred parental lines for crossbred performance. Dominance is the likely genetic basis of heterosis and explicitly

Breeds of Livestock Swine Breeds — Breeds of Livestock

australia article about crossbred swine pdf

Crossbred National Swine Registry. May 08, 2017В В· Beef cattle were introduced to Australia in 1788, with the first herds based on British breeds, particularly the Shorthorn. This breed was associated with the opening up of each new area of pastoral Australia in the early days, and was especially dominant in north-western Queensland, the Northern Territory and the Kimberley region of Western Australia., Find information on swine flu, including prevention and treatment, at Everyday Health. Search. Log in My Profile All Swine Flu Articles. Last Updated: 9/10/2009. Don't Miss This..

CROSSBREEDING IN SWINE EXPERIMENTAL RESULTS

Australia Prospects for the Australian pig industry. Swine flu, also called Hog or Pig Flu, is an infection caused by any one of the several types of Swine influenza virus (SIV) which is common throughout pig population world wide., Breeds of Swine Macy Vansickle Bryan County OCES Youth Development Educator Landrace Originated in Denmark Large Drooped ears Known for their maternal instincts White Long Berkshire One of the oldest breeds, originated in England Black with white legs, snout and switch Known for fast and efficient growth and reproductive efficiency Erect ears Chester White Originated in Chester County.

This gallery hosted by SmugMug; your photos look better here. REPRODUCTIVE PERFORMANCE FOR FOUR BREEDS OF SWINE: CROSSBRED FEMALES AND PUREBRED AND CROSSBRED BOARS 1 D. S. Buchanan a and R. K. Johnson 3 Oklahoma State University, Stillwater 74078 Summary Matings and litters were studied involving all three-breed crosses (sired by purebred

Swine flu, also called Hog or Pig Flu, is an infection caused by any one of the several types of Swine influenza virus (SIV) which is common throughout pig population world wide. Autogenous sow vaccination for Glasser’s disease in weaner pigs in two large swine farm systems RB, PB: Department of Primary Industry, Yeerongpilly 4105, Queensland, Australia. Corresponding author: Dr Steven McOrist, University Bowles R, Blackall P. Autogenous sow vaccination for Glasser’s disease in weaner pigs in two large swine

BMC Veterinary Research is an open access journal publishing original peer-reviewed research articles in all aspects of veterinary science and medicine, Australia - Prospects for the Australian pig industry Swine closing inventories for CY 2011 are forecast at 2.5 million head, up on the 2.45 million head estimated for CY 2010. Closing inventory for CY 2009 has been revised upwards from 2.3 million head to 2.302 million …

Abstract. Records of 195 crossbred pigs (75 % Landrace + 25% Desi ), raised over a period of 2 years from 2014 to 2015, maintained at the Livestock Production Research (Pigs), Indian Veterinary Research Institute, Izatnagar, Uttar Pradesh were used in this study to determine the effect of various environmental factors on growth and litter traits. Artificial Insemination Swine Genetics Company. Swine Genetics International is an artificial insemination swine genetics company, also offering swine production related consulting. Liquid semen is available from over 150 sires to help you meet your genetic needs.

Performance and carcass characteristics of Australian purebred and crossbred lambs supplemented with Rice Bran. Article (PDF Available) Australia for commercial boning out into retail cuts and This gallery hosted by SmugMug; your photos look better here.

Breeds of Swine Macy Vansickle Bryan County OCES Youth Development Educator Landrace Originated in Denmark Large Drooped ears Known for their maternal instincts White Long Berkshire One of the oldest breeds, originated in England Black with white legs, snout and switch Known for fast and efficient growth and reproductive efficiency Erect ears Chester White Originated in Chester County Litter Performance for Various Types of Crossbred Females in Swine D.S. Buchanan,' R.K. Johnson2 and R. Vencl' Story in Brief Crossbred females were mated to purebred boars to obtain 493 litters representing all possible three-breed and four-breed cross litters involviIf!S Duroc, Yorkshire, Spotted and Landrace breeds. Litters were evaluated for

This gallery hosted by SmugMug; your photos look better here. The second-most recorded breed of swine in the United States, the red pigs with the drooping ears are valued for their product quality, carcass yield, fast growth and lean-gain efficiency. They also add value through their prolificacy and longevity in the female line.

Aug 28, 2017В В· In a press article on the WUR website, the researchers explain that production animals in pigs are generally crossbred animals, while selection takes place in purebred animals. That is why the genetic correlation between purebred and crossbred performance, known as the purebred-crossbred correlation, is very important. As a result, the swine industry has adjusted the swine production structure from expanding animal size to improving quality of the finished product. For example, the number of three-way crossbred, lean hogs has increased about five percent on the main production farms, but these efforts are not enough.

Swine flu, also called Hog or Pig Flu, is an infection caused by any one of the several types of Swine influenza virus (SIV) which is common throughout pig population world wide. The farrow to wean segment of the swine industry is the one in which the producer maintains a herd of pregnant sows. They may either practice early weaning and wean their piglets at 10 to 15 pounds and send them to a nursery for specialized care (the most modern form of production), or wait to wean them until they reach 30 to 35 pounds, in which case the piglets are then referred to as feeder

This gallery hosted by SmugMug; your photos look better here. Australia - Prospects for the Australian pig industry Swine closing inventories for CY 2011 are forecast at 2.5 million head, up on the 2.45 million head estimated for CY 2010. Closing inventory for CY 2009 has been revised upwards from 2.3 million head to 2.302 million …

Autogenous sow vaccination for Glasser’s disease in weaner pigs in two large swine farm systems RB, PB: Department of Primary Industry, Yeerongpilly 4105, Queensland, Australia. Corresponding author: Dr Steven McOrist, University Bowles R, Blackall P. Autogenous sow vaccination for Glasser’s disease in weaner pigs in two large swine The meat production potential of indigenous goats was evaluated by crossing does of the Sirohi breed with bucks of the Beetal breed to produce Beetal × Sirohi kids for comparison with contemporary kids of the Sirohi breed (Taneja, 1982).The average body weights from birth to 12 months of age were similar for kids of the Sirohi breed and Beetal-sired crosses ().

Quantitative trait loci analysis for leg weakness-related traits in a Duroc Г— Pietrain crossbred population Lundeheim N, Ekman S. Osteochondrosis in wild boar-Swedish Yorkshire crossbred pigs (F2 generation) Acta Vet Scand. 1995 Genetic control of front-leg weakness in Duroc swine. I. Direct response to five generations of divergent This gallery hosted by SmugMug; your photos look better here.

Litter Performance for Various Types of Crossbred Females

australia article about crossbred swine pdf

Growth and litter traits in crossbred pigs across the non. A combined crossbred and purebred selection (CCPS) method, i.e. using crossbred and purebred information, was proposed to achieve genetic response in crossbred animals. Selection index theory was applied to establish a CCPS index. The CCPS was compared with pure-line selection (PLS) and crossbred selection (CS) methods., Aug 01, 2017В В· The breeding goal of those systems is to improve crossbred performance, while selection commonly takes place in purebred animals based on purebred performance. Thus, selection is indirect, and the accuracy of selection depends on the genetic correlation between purebred (PB) and crossbred (CB) performance (r pc)..

australia article about crossbred swine pdf

Growth and litter traits in crossbred pigs across the non. A combined crossbred and purebred selection (CCPS) method, i.e. using crossbred and purebred information, was proposed to achieve genetic response in crossbred animals. Selection index theory was applied to establish a CCPS index. The CCPS was compared with pure-line selection (PLS) and crossbred selection (CS) methods., Breeding or mating systems are the approach taken to pairing a boar and a gilt or sow for breeding in order to incorporate or maintain desired traits. Because the genetics of a pig plays an important role in its performance and meat quality, all pig producers should be familiar with breeding systems for pigs. This factsheet provides an introduction to pig breeding systems and heterosis..

Litter Performance for Various Types of Crossbred Females

australia article about crossbred swine pdf

Structure of the Swine Industry Flashcards Quizlet. Aug 28, 2017В В· In a press article on the WUR website, the researchers explain that production animals in pigs are generally crossbred animals, while selection takes place in purebred animals. That is why the genetic correlation between purebred and crossbred performance, known as the purebred-crossbred correlation, is very important. Jan 12, 2017В В· Breeding for crossbred performance. Traditionally, estimation of breeding values has used data collected from purebred animals collected at nucleus farms. Although this strategy has enabled important genetic progress for decades, improvements made at the nucleus are not fully realized at the commercial level..

australia article about crossbred swine pdf


Fortune Cookie sired the popular $22,000 Joostbern crossbred boar at the 2015 NSR Fall Classic in Duncan, OK! Fortune Cookie's sire, Fortune, continues to leave his mark on the crossbred showpig industry having recently sired the Reserve Grand Overall at the 2016 National Western Stock Show! SWINE GENETICS INTERNATIONAL 30805 595TH AVENUE The purebred group had a 25% larger tion programs of Canada (Canadian Center for total variance than the crossbred group. The magni- Swine Improvement), Australia (National Pig tude of the total variance in the purebred group is Improvement Program) and the USA (Swine Testing similar in magnitude to that found by McCarter et al. and Genetic

REPRODUCTIVE PERFORMANCE FOR FOUR BREEDS OF SWINE: CROSSBRED FEMALES AND PUREBRED AND CROSSBRED BOARS 1 D. S. Buchanan a and R. K. Johnson 3 Oklahoma State University, Stillwater 74078 Summary Matings and litters were studied involving all three-breed crosses (sired by purebred Apr 01, 2015В В· An assumption that is routinely made in multibreed programs is that purebred and crossbred performance is regarded as the same trait. Wei and van der Werf (1994) found that response to selection for crossbred animals increased using the combined information as the genetic correlation (r pc) between purebred and crossbred animals decreased from 1.0.

In pig breeding, selection is usually carried out in purebred populations, although the final goal is to improve crossbred performance. Genomic selection can be used to select purebred parental lines for crossbred performance. Dominance is the likely genetic basis of heterosis and explicitly A combined crossbred and purebred selection (CCPS) method, i.e. using crossbred and purebred information, was proposed to achieve genetic response in crossbred animals. Selection index theory was applied to establish a CCPS index. The CCPS was compared with pure-line selection (PLS) and crossbred selection (CS) methods.

Swine It is believed that the majority of the breeds we now know are descended from the Eurasian Wild Boar (Sus scrofa). Archaeological evidence from the Middle East indicates domestication of the pig occurs as early as 9,000 years ago, with some evidence for domestication even earlier in China. This gallery hosted by SmugMug; your photos look better here.

Define crossbred. crossbred synonyms, crossbred pronunciation, crossbred translation, English dictionary definition of crossbred. adj. Produced by the mating of individuals of different breeds, varieties, or species. cross′bred′ n. adj produced as a result of crossbreeding n a... Abstract. Records of 195 crossbred pigs (75 % Landrace + 25% Desi ), raised over a period of 2 years from 2014 to 2015, maintained at the Livestock Production Research (Pigs), Indian Veterinary Research Institute, Izatnagar, Uttar Pradesh were used in this study to determine the effect of various environmental factors on growth and litter traits.

REPRODUCTIVE PERFORMANCE FOR FOUR BREEDS OF SWINE: CROSSBRED FEMALES AND PUREBRED AND CROSSBRED BOARS 1 D. S. Buchanan a and R. K. Johnson 3 Oklahoma State University, Stillwater 74078 Summary Matings and litters were studied involving all three-breed crosses (sired by purebred Performance and carcass characteristics of Australian purebred and crossbred lambs supplemented with Rice Bran. Article (PDF Available) Australia for commercial boning out into retail cuts and

Sep 14, 2011 · Crossbreeding systems for beef cattle. Female F1 crossbred progeny are mated to males of one of the parental breeds and all progeny are sold for slaughter. This breeding system takes full advantage of heterosis for maternal traits such as fertility of the cow, and milking/mothering ability (as the mother expresses 100% of possible heterosis 2019 Fall Classic Crossbred Boar Sale. The NSR Show Ring is the official app for the National Swine Registry. Stay up to date with deadlines and information for all upcoming NSR and NJSA events. Receive timely push notifications about deadlines, schedules and …

Swine It is believed that the majority of the breeds we now know are descended from the Eurasian Wild Boar (Sus scrofa). Archaeological evidence from the Middle East indicates domestication of the pig occurs as early as 9,000 years ago, with some evidence for domestication even earlier in China. The second-most recorded breed of swine in the United States, the red pigs with the drooping ears are valued for their product quality, carcass yield, fast growth and lean-gain efficiency. They also add value through their prolificacy and longevity in the female line.

A SIX YEARS' STUDY OF CROSSBREEDING SWINE 5 culture. An additional cross was made at each experiment station by mating crossbred gilts back to one of the parental breeds. The result­ ing individuals are designated as back-cross pigs. At the outset of the experiment, the gilts of … The second-most recorded breed of swine in the United States, the red pigs with the drooping ears are valued for their product quality, carcass yield, fast growth and lean-gain efficiency. They also add value through their prolificacy and longevity in the female line.

The purpose of this study was to analyze reproductive performance in purebred Landrace and Yorkshire sows with special reference to seasonal influence and parity number, under tropical conditions where day length is almost constant throughout the year Data from three purebred sow herds in Thailand during the period from 1993 to 1996 were analyzed The two breeds were present in all three herds Breeding or mating systems are the approach taken to pairing a boar and a gilt or sow for breeding in order to incorporate or maintain desired traits. Because the genetics of a pig plays an important role in its performance and meat quality, all pig producers should be familiar with breeding systems for pigs. This factsheet provides an introduction to pig breeding systems and heterosis.

The farrow to wean segment of the swine industry is the one in which the producer maintains a herd of pregnant sows. They may either practice early weaning and wean their piglets at 10 to 15 pounds and send them to a nursery for specialized care (the most modern form of production), or wait to wean them until they reach 30 to 35 pounds, in which case the piglets are then referred to as feeder Aug 28, 2017В В· In a press article on the WUR website, the researchers explain that production animals in pigs are generally crossbred animals, while selection takes place in purebred animals. That is why the genetic correlation between purebred and crossbred performance, known as the purebred-crossbred correlation, is very important.

A combined crossbred and purebred selection (CCPS) method, i.e. using crossbred and purebred information, was proposed to achieve genetic response in crossbred animals. Selection index theory was applied to establish a CCPS index. The CCPS was compared with pure-line selection (PLS) and crossbred selection (CS) methods. Apr 01, 2015В В· An assumption that is routinely made in multibreed programs is that purebred and crossbred performance is regarded as the same trait. Wei and van der Werf (1994) found that response to selection for crossbred animals increased using the combined information as the genetic correlation (r pc) between purebred and crossbred animals decreased from 1.0.

"Breeds of Livestock - Swine Breeds". ansi.okstate.edu. Oklahoma State University Dept. of Animal Science. Ekarius, Carol (2008). Storey's Illustrated Breed Guide to Sheep, Goats, Cattle and Pigs. Storey Publishing. ISBN 978-1-60342-036-5 Litter Performance for Various Types of Crossbred Females in Swine D.S. Buchanan,' R.K. Johnson2 and R. Vencl' Story in Brief Crossbred females were mated to purebred boars to obtain 493 litters representing all possible three-breed and four-breed cross litters involviIf!S Duroc, Yorkshire, Spotted and Landrace breeds. Litters were evaluated for

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