Measurement of green total factor productivity on Chinese laying hens: From the perspective of regional differences.
PLoS One
; 16(8): e0255739, 2021.
Article
in En
| MEDLINE
| ID: mdl-34352036
ABSTRACT
Eggs contain the essential cholesterol and protein for the human body, which plays an irreplaceable role in human survival, production and life. There are significant differences in the development of laying hens feeding in different regions. It is of great significance to improve egg production and reduce pollution emission for China's laying hens industry. Based on the SBM model, this paper constructs MML index, considering unexpected output under common frontier, to comprehensively evaluate the green total factor productivity on Chinese laying hens (GTCL). The results show that (1) GTCL shows a large spatial and temporal differentiation under both the common frontier and the regional frontier. Compared with the eastern region and central region, the western region has obvious advantages in GTCL. (2) GTCL overall shows a downward trend, however, it emerges an upward trend in recent years. (3) Compared with small-scale and large-scale, middle-scale GTCL has advantages. According to the above empirical results, combined with the China's actual national situation, this paper finally puts forward some policy recommendations to improve GTCL.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Chickens
/
Sustainable Development
/
Animal Husbandry
Type of study:
Guideline
/
Prognostic_studies
Aspects:
Determinantes_sociais_saude
Limits:
Animals
Country/Region as subject:
Asia
Language:
En
Journal:
PLoS One
Journal subject:
CIENCIA
/
MEDICINA
Year:
2021
Document type:
Article