Season and Lactation Number Effects on Milk Production and Reproduction of Dairy Cattle in Arizona

Ray, D. E.; Halbach, T.J.; Armstrong, D.V.

doi:10.3168/jds.s0022-0302(92)78061-8

Cited by 137 publications

(105 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This illustrates that an increase in temperature, relative humidity, sunshine radiation and THI, could lead to lengthen DP and ICP by several days (Table 4). Similar findings were reported by Du Bois and Williams (1980), Weller and Folman (1990), Ray et al (1992), Bouraoui et al (2002), Jordan et al (2002), Mishra and Joshi (2009) and Gaafar et al (2011). Thus, calving schedules could be adjusted to minimize the adverse effect of heat stress.…”

Section: Effect Of Climatic Variables On Dry Period and Inter Calvingsupporting

confidence: 89%

Effect of macroclimatic factors on milk production and reproductive efficiency of Holstein Friesian Deoni crossbred cows

Zewdu¹,

Thombre²,

Bainwad³

2014

J. Cell Anim. Biol.

View full text Add to dashboard Cite

This study was undertaken to evaluate the effects of different macro climatic variables on milk production and reproduction efficiency of Holstein Friesian × Deoni crossbred cows. Data of 256 HF × Deoni crossbred cows with 1485 total records of lactation and the meteorological data over a 30-year period (1981 to 2010) were obtained from Marathwada Agricultural University Cattle Cross Breeding Project and the University Meteorological Observatory Weather Station, respectively. The parameters used as indicators of milk production and reproduction performance in this study were lactation milk yield, lactation length, dry period and inter calving period. They were plotted against the monthly climatic variable for regression analysis. It was observed that maximum temperature, maximum humidity, bright sunshine hours and maximum temperature humidity index exhibited negative and significant regression result with lactation milk yield and lactation length. All the considered climatic variables accounted for 28 and 21% direct variation on lactation milk yield and lactation length as verified by the value of coefficients of determination (R 2 ). In contrast, maximum temperature, maximum humidity, wind speed and maximum temperature humidity index showed positive and significant regression on dry period and inter calving period. All the considered climatic variables accounted for 25 and 23% direct variation on dry period and inter calving period, respectively. The summary of the meteorological data confirmed that there were high values of temperature humidity index for considerable months yearly, which suggested that most crossbred cows were exposed to the negative effects of heat stress. Hence, other productive and reproductive strategies like improving environmental, productive and reproductive management of cows are needed to reduce the adverse effect of heat stress.

show abstract

Section: Effect Of Climatic Variables On Dry Period and Inter Calvingsupporting

confidence: 89%

Effect of macroclimatic factors on milk production and reproductive efficiency of Holstein Friesian Deoni crossbred cows

Zewdu¹,

Thombre²,

Bainwad³

2014

J. Cell Anim. Biol.

View full text Add to dashboard Cite

show abstract

“…Such findings are specific to the climatic conditions of Western Europe. A different seasonal effect has been noted in Arizona (Ray et al, 1992), where the summers are very hot, and in Eastern Europe (Maciuc, 2009). Milk composition, however, differed little in absolute terms from one season to another.…”

Section: Analysis Of First Lactationmentioning

confidence: 87%

Association between age at first calving, year and season of first calving and milk production in Holstein cows

Froidmont

Mayeres

Picron

et al. 2013

Animal

View full text Add to dashboard Cite

The effects of first calving (FC) in Holstein heifers on their first lactation, second lactation and lifetime milk production were examined from an initial database of 459 743 animals that first calved between 1 January 1990 and 31 July 2010 in Wallonia, Belgium. The FC age class (18 to 22, 22 to 26, 26 to 30, 30 to 34, 34 to 38 and 38 to 42 months), the FC season and FC year class (1990 to 1994, 1995 to 1999, 2000 to 2004 and 2005 to 2010) were considered when analysing the first and second lactation data. Lifetime data were similarly analysed, but did not include animals that calved after 2005 because many of them were still lactating. Only 24% of animals had their FC before 26 months of age. Animals that first calved between 22 and 26 months of age had more lactations and productive days during their life. They also had higher first and second lactation milk production and lifetime milk production. Summer or autumn FC improved first lactation, second lactation and lifetime milk production, as well as production per day of lactation, compared with winter or spring FC. Compared with animals that calved for the first time in 1990 to 1994, animals with a FC in 2000 to 2004 had a longer calving interval (0.5 months), fewer lactations per animal (−0.6) and fewer days in their lifetime lactation (a reduction of 144 days). As a result, the animals’ lifetime production did not increase between 1990 to 1994 and 2000 to 2004, although milk production per day of lactation (22.85v.20.49 l/day) and per day of life (11.49v.10.78 l/day) improved. Milk fat content was lower in 2000 to 2004 than in 1990 to 1994, but protein content remained relatively constant, probably because of the cows’ higher production level and increased dietary concentrate supplementation.

show abstract

“…Moreover, the evolution of the milk yield along the productive life of our organic HolsteinFriesian cows was very similar to that observed in their conventional counterparts. Milk yield production along the productive life has been well studied (Ray et al, 1992;Mellado et al, 2011;Ríos-Utrera et al, 2013): the increase of milk yield with increased parity is due to differences in the control of tissue mobilization between primiparous and multiparous cows (Wathes et al, 2007); lower consumption of feed per day of primiparous cows than multiparous cows (Dado & Allen, 1994), and increasing body size of older cows over that of firstlactation animals (Mellado et al, 2011). In general it is assumed that milk yield per lactation increased significantly until 3 rd lactation and is maximum between 4 th and 5 th lactation (Ray et al, 1992;Gader et al, 2007;Ríos-Utrera et al, 2013).…”

Section: Discussionmentioning

confidence: 99%

Holstein-Friesian milk performance in organic farming in North Spain: Comparison with other systems and breeds

Rodríguez‐Bermúdez

Miranda

Galdo

et al. 2017

Span. j. agric. res.

View full text Add to dashboard Cite

Organic systems are highly dependent on the environment and require animals well adapted to local conditions. In Spain, organic dairy farmers are not satisfied with the productive performance of their herds and ask for technical advice to obtain suitable animals for organic systems. The milk productive performance (milk yield, nutritional composition, and somatic cell count) of Holstein-Friesian cows in organic farming in North Spain compared with conventional farms has been analysed. When breed diversity was present in the same organic farm, Holstein-Friesian milk performance was compared with other breeds and/or crosses. Holstein-Friesian cows in organic farming produce slightly less milk than grazing conventional cows, but milk was similar in composition and somatic cell count across systems. The limited data from organic farms where breed diversity exists indicate that Holstein-Friesian cows produce numerically more milk than other breeds and crosses but with statistically lower protein content. Considering that in Spain organic milk production is mostly used for liquid milk consumption and that the payment system is based only on milk volume, Holstein-Friesian cows would better fit the farmer interests than other breeds or crosses. However, in addition to productive performance, reproductive efficiency, animal health and consumer's preferences should be fully considered when selecting a breed for organic production. If Holstein-Friesian was the selected breed, efforts should be made to identify cows within the breed that are best adapted to organic conditions. New productive, reproductive, nutritional and economic studies would be needed to develop a genetic merit index for organic systems.Additional key words: dairy cattle; milk composition; crosses; suitability; production systems.Correspondence should be addressed to Marta López Alonso: marta.lopez.alonso@usc.esAbbreviations used: DCR (dairy control record); FS (farm system); LG (lactation group); SCC (somatic cell count).

show abstract

Season and Lactation Number Effects on Milk Production and Reproduction of Dairy Cattle in Arizona

Cited by 137 publications

References 12 publications

Effect of macroclimatic factors on milk production and reproductive efficiency of Holstein Friesian Deoni crossbred cows

Effect of macroclimatic factors on milk production and reproductive efficiency of Holstein Friesian Deoni crossbred cows

Association between age at first calving, year and season of first calving and milk production in Holstein cows

Holstein-Friesian milk performance in organic farming in North Spain: Comparison with other systems and breeds

Contact Info

Product

Resources

About