The chicken…provided Middle Eastern populations with a more efficient protein resource [than pork]. Pigs became a redundant animal in the subsistence system, but they were not entirely replaced. “Indeed, contrary to expectations based on the religious prohibition of the pig, it never disappeared from the Middle East.”
The New Historian reports that new research appears to explain why pork consumption in the Middle East drastically declined – the introduction of chicken:
The humble pig has a long and often poorly understood history. As an excellent source of protein, the pig has been a useful animal for humans in many areas of the world for thousands of years. Its use in the Middle East, however, has a more complex history. New research has sought to explore this complicated past.
Richard W. Redding, from the Kelsey Museum of Archaeology, University of Michigan, is an expert at studying animal bones in archaeological contexts. He has studied the role of subsistence behavior in the evolution of human culture, in particular, how societies shift from a hunter-gatherer mode of subsistence to a more stable form of food production.
His new research, published recently in Journal of Archaeological Research, attempts to examine why the pig disappeared from the human subsistence system in the Middle East. Redding’s research is important for our understanding of the historical reasons behind cultural practices which prohibit the consumption of pork.
Wild pigs were indigenous to the Middle East and occurred throughout the area. “From archaeological faunal data, we now know that wild pigs were present in the Early Neolithic of Egypt in the Fayyum and the Nile Delta,” Redding writes in his report. These wild pigs spread and their domestication followed, with the first attempts to domesticate the animals in the Middle East occurring around 11,000 BCE.
Earlier research had found that domestic pigs were common in the Fertile Crescent between 5,000 and 2,000 BCE. As pigs are not useful work animals and do not provide secondary resources such as wool or eggs, it is clear that pigs were being eaten in the area until at least the first millennium BCE. Why this changed has been a puzzle for researchers.
One of the reasons why pigs did not continue being consumed in the Middle East could have been their water needs. Pigs are unable to cool themselves with sweat glands and require substantial amounts of drinking water, much more than cattle or goats.
This constant need for water makes pigs “difficult to move in arid and semiarid environments, since they must be moved from water source to water source and only in cooler weather,” Redding notes. This would not have presented much of a problem, however, as pigs were used in a subsistence manner, rather than traded for profit.
Redding proposes that pigs may have been replaced by another domestic animal: the chicken.
Chickens would have presented a significant challenge to the continued farming of pigs, as they had competing food and labour needs. In this situation, humans would have had to make a decision between pigs and chickens.
Chickens have several advantages over pigs. First, they are a more efficient source of protein than pigs; chickens require 3,500 litres of water to produce one kilo of meat, pigs require 6,000. Secondly, chickens produce eggs, an important secondary product which pigs do not offer. Third, chickens are much smaller and can thus be consumed within 24 hours; this eliminates the problem of preserving large quantities of meat in a hot climate. Finally, chickens could be used by nomads. While neither chickens nor pigs can be herded in the same way as cattle, chickens are small enough to be transported.
“Under these circumstances, the chicken becomes a major protein resource,” Redding states.
The chicken, therefore, provided Middle Eastern populations with a more efficient protein resource. Pigs became a redundant animal in the subsistence system, but they were not entirely replaced. “Indeed, contrary to expectations based on the religious prohibition of the pig, it never disappeared from the Middle East,” Redding concludes.
The Smithsonian Magazine's report.
The study's abstract:
The role of the pig in the subsistence system of the Middle East has a long and, in some cases, poorly understood history. It is a common domesticated animal in earlier archaeological sites throughout the Middle East. Sometime in the first millennium BC pig use declined, and subsequently it became prohibited in large areas of the Middle East. The pig is an excellent source of protein, but because of low mobility and high water needs it is difficult to move long distances. While common in sites, the pig is rarely mentioned in texts. In contrast, the use of cattle, sheep, and goats is extensively documented. In the human subsistence system of the arid and semiarid areas of the Middle East, the pig was a household-based protein resource that was not of interest to the central authority. Sometime in the late second or first millennium BC, the chicken was introduced into the Middle East. The chicken is an even more ideal household-based protein resource and, like the pig, is rarely mentioned in texts. In arid and semiarid areas of the Middle East the pig and the chicken compete for food and labor in the human subsistence system. I hypothesize that in arid and semiarid areas of the Middle East the chicken largely replaced the pig because the chicken is a more efficient source of protein, it produces a secondary product, the egg, and it is a smaller package; hence, a family can consume one in a day or two. This made the pig redundant and available for use in other human systems. The pig, however, never disappeared from the diet of humans in the Middle East. Keywords: Pig, Food prohibition, Chicken, Human subsistence, Middle East, Egypt Running title: The pig and the chicken in the Middle East.
The entire study:
The Pig and the Chicken in the Middle East: Modeling Human Subsistence Behavior in the Archaeological Record Using Historical and Animal Husbandry.
A different but complimentary view: