Andrew Knight videos

How Much Do Chickens Suffer When Gassed With CO2 03:39

How Much Do Chickens Suffer When Gassed With CO2

How Much Does Animal Farming Contribute to Climate Change 04:16

How Much Does Animal Farming Contribute to Climate Change

Consumer Acceptance of Sustainable Dog Food 03:36

Consumer Acceptance of Sustainable Dog Food

Consumer Acceptance of Sustainable Cat Food 03:41

Consumer Acceptance of Sustainable Cat Food

Meat Based Versus Vegan Pet Food: Environmental Sustainability 04:19

Meat Based Versus Vegan Pet Food: Environmental Sustainability

How Should Pigs be Stunned at Slaughter? 04:26

How Should Pigs be Stunned at Slaughter?

How Much do Vegan Diets Improve the Health of Dogs? 06:18

How Much do Vegan Diets Improve the Health of Dogs?

Fox Control Methods Animal Welfare and Ethical Implications 04:45

Fox Control Methods Animal Welfare and Ethical Implications

Should Tigers Be Used Within Travelling Circuses? 07:48

Should Tigers Be Used Within Travelling Circuses?

The Welfare of Backyard Chickens 04:35

The Welfare of Backyard Chickens

Influenza Risks From Pig and Poultry Farms 04:29

Influenza Risks From Pig and Poultry Farms

Cell Based Seafood: Japanese Consumer Views 04:08

Cell Based Seafood: Japanese Consumer Views

Could Vegan Pet Food Help Save the Planet 05:17

Could Vegan Pet Food Help Save the Planet

Are Vegan Diets Good for Cats 05:05

Are Vegan Diets Good for Cats

Meat Chickens and Colony Cages 04:12

Meat Chickens and Colony Cages

Are Vegan Diets Good for Dogs? 05:47

Are Vegan Diets Good for Dogs?

Should Cats and Dogs go Vegan? - Professor Andrew Knight, University of Winchester 01:05:12

Should Cats and Dogs go Vegan? - Professor Andrew Knight, University of Winchester

Educational Animal Use Within Europe 06:03

Educational Animal Use Within Europe

Pet Food Manufacturing 04:35

Pet Food Manufacturing

Vegan Pets Are Just as Happy with Their Meals 03:44

Vegan Pets Are Just as Happy with Their Meals

Greyhound Racing 03:42

Greyhound Racing

Creating a Clinical Skills Laboratory for teaching surgical and clinical skills 02:58

Creating a Clinical Skills Laboratory for teaching surgical and clinical skills

NZALA Report - inconsistencies between the Codes and the Act 04:26

NZALA Report - inconsistencies between the Codes and the Act

The Green Protein Report 03:38

The Green Protein Report

Wildlife Trade - Confiscated Animals 03:26

Wildlife Trade - Confiscated Animals

Efficacy of Alternatives to Educational Animal Use 05:11

Efficacy of Alternatives to Educational Animal Use

Animal Research and Depression 05:17

Animal Research and Depression

Sow farrowing crates NZ 01:39

Sow farrowing crates NZ

Supermarket Chicken and Pandemics 05:35

Supermarket Chicken and Pandemics

Primate Research 04:44

Primate Research

Animal welfare in New Zealand 04:43

Animal welfare in New Zealand

September 27, 2025

Over 70 billion chickens are slaughtered globally each year. Almost all are meat breeds, typically housed in very large barns with a litter floor. Recently however, modern cage systems have been developed which provide very limited space and stack several tiers high. There is debate about the impacts of such modern cage systems on chicken welfare. Accordingly, we systematically reviewed studies assessing the welfare of meat chickens kept in either modern cage systems or littered barns. Overall, 23 studies were reviewed, and none of the experimental studies reviewed incorporated a full behavioural analysis. Therefore, significant concerns exist about the deprivation of natural behaviours in meat chickens kept in modern cage systems. Given the numbers of meat chickens globally that could be impacted by these modern cage systems, this is a major animal welfare concern. Full study: http://www.rebrand.ly/2022/chickens. Summary: https://encyclopedia.pub/entry/33547.