Effects of Days Dry and Days Open on Holstein Milk Production

Journal of Dairy Science

Volumn 55, Issue 1, 1972, Pages 107-112

  Schaeffer, L R ^a   Henderson, C R ^a  

^a Department of Obstetrics Gynecology   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0010671109     PISSN: 00220302     EISSN: None     Source Type: Journal    
DOI: 10.3168/jds.S0022-0302(72)85439-0     Document Type: Article

References (21)

1. Genetic relationship between production and breeding efficiency
2. Estimation of variance and covariance components
3. Influence of length of dry period upon the quantity of milk produced in the subsequent lactation
4. Variables affecting the ratio of total milk produced in 305 days to monthly production
5. Variables affecting ratio factors for estimating 305-day production from part lactation
6. Comparison of ratio factors for extending part-time milk and fat factors
7. Some effects of certain environmental and inherited influences upon milk and fat production in dairy cattle
8. Production losses in dairy cattle due to days open
9. Relations between parts of lactations and producing ability of Holstein cows
10. Joint influence of month and age of calving on milk yield of Holstein cows in the northeastern United States
11. Effects of days open on lactation production
12. The variations in milk yields caused by season of the year, service, age, and dry period and their elimination. Parts I and IV
13. Part lactations II. Genetic and phenotypic studies of monthly milk fat yield
14. Relation of days open and clays dry to lactation milk and fat yields
15. Sire evaluation from five-month daughter records
16. Genetic parameters of five-month lactation records
17. Estimates of genetic parameters of some functions of part lactation milk records
18. Use of part lactation records in sire evaluation
19. Estimation of missing monthly test day records
20. Utilizing both part and complete daughter records in sire evaluation
21. The effects of days dry and days open on the milk and butterfat production of Holstein-Friesian cattle